Move XTLDR under boot directory

2025-10-06 12:08:36 +02:00
parent ce8041754b
commit c5f522be4c
53 changed files with 2 additions and 2 deletions
--- a/boot/xtldr/modules/CMakeLists.txt
+++ b/boot/xtldr/modules/CMakeLists.txt
@@ -0,0 +1,7 @@
+add_subdirectory(acpi)
+add_subdirectory(beep)
+add_subdirectory(chainldr)
+add_subdirectory(dummy)
+add_subdirectory(framebuf)
+add_subdirectory(pecoff)
+add_subdirectory(xtos_o)
--- a/boot/xtldr/modules/acpi/CMakeLists.txt
+++ b/boot/xtldr/modules/acpi/CMakeLists.txt
@@ -0,0 +1,27 @@
+# XT Boot Loader ACPI Support Module
+PROJECT(XTLDR_ACPI)
+
+# Specify include directories
+include_directories(
+    ${EXECTOS_SOURCE_DIR}/sdk/xtdk
+    ${XTLDR_ACPI_SOURCE_DIR}/includes)
+
+# Specify list of source code files
+list(APPEND XTLDR_ACPI_SOURCE
+    ${XTLDR_ACPI_SOURCE_DIR}/acpi.cc
+    ${XTLDR_ACPI_SOURCE_DIR}/data.cc)
+
+# Link module executable
+add_executable(acpi ${XTLDR_ACPI_SOURCE})
+
+# Add linker libraries
+target_link_libraries(acpi libxtldr libxtos)
+
+# Set proper binary name and install target
+set_target_properties(acpi PROPERTIES SUFFIX .efi)
+set_install_target(acpi efi/boot/xtldr/modules)
+
+# Set module entrypoint and subsystem
+set_entrypoint(acpi "XtLdrModuleMain")
+set_linker_map(acpi TRUE)
+set_subsystem(acpi efi_boot_service_driver)
--- a/boot/xtldr/modules/acpi/acpi.cc
+++ b/boot/xtldr/modules/acpi/acpi.cc
@@ -0,0 +1,439 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/acpi/acpi.cc
+ * DESCRIPTION:     XTLDR ACPI Support Module
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <acpi.hh>
+
+
+/* ACPI module information */
+MODULE_AUTHOR(L"Rafal Kupiec <belliash@codingworkshop.eu.org>");
+MODULE_DESCRIPTION(L"ACPI support");
+MODULE_LICENSE(L"GPLv3");
+MODULE_VERSION(L"0.1");
+
+
+/**
+ * Attempts to get XSDP. If it is not found or checksum mismatch, it will try to get RSDP instead.
+ *
+ * @param AcpiTable
+ *        Suplies a pointer to memory area where XSDP or RSRP address will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Acpi::GetAcpiDescriptionPointer(OUT PVOID *AcpiTable)
+{
+    PVOID Rsdp;
+
+    /* Try to get XSDP (ACPI 2.0) from system configuration tables */
+    if(GetXsdpTable(&Rsdp) == STATUS_EFI_SUCCESS)
+    {
+        /* XSDP found, return success */
+        *AcpiTable = Rsdp;
+        return STATUS_EFI_SUCCESS;
+    }
+
+    /* Try to get RSDP (ACPI 1.0) from system configuration tables */
+    if(GetRsdpTable(&Rsdp) == STATUS_EFI_SUCCESS)
+    {
+        /* RSDP found, return success */
+        *AcpiTable = Rsdp;
+        return STATUS_EFI_SUCCESS;
+    }
+
+    /* Neither XSDP nor RSDP found */
+    return STATUS_EFI_NOT_FOUND;
+}
+
+/**
+ * Finds ACPI description table with given signature.
+ *
+ * @param Signature
+ *        Supplies the signature of the desired ACPI table.
+ *
+ * @param PreviousTable
+ *        Supplies a pointer to the table to start searching from.
+ *
+ * @param AcpiTable
+ *        Supplies a pointer to memory area where ACPI table address will be stored, or NULLPTR if not found.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Acpi::GetAcpiTable(IN CONST UINT Signature,
+                   IN PVOID PreviousTable,
+                   OUT PVOID *AcpiTable)
+{
+    PACPI_DESCRIPTION_HEADER TableHeader;
+    SIZE_T RsdtIndex, TableIndex;
+    EFI_STATUS Status;
+    SIZE_T TableCount;
+    PACPI_RSDP Rsdp;
+    PACPI_RSDT Rsdt;
+    BOOLEAN Xsdp;
+
+    /* Return NULLPTR by default if requested table not found */
+    *AcpiTable = NULLPTR;
+
+    /* Get Root System Description Table Pointer */
+    Status = GetAcpiDescriptionPointer((PVOID*)&Rsdp);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* ACPI tables not found, return error */
+        return Status;
+    }
+
+    /* Check if it is XSDP (ACPI 2.0) or RSDP (ACPI 1.0) */
+    if(Rsdp->Revision >= 2 && Rsdp->XsdtAddress)
+    {
+        /* XSDP (ACPI 2.0) */
+        Xsdp = TRUE;
+        Rsdt = (PACPI_RSDT)(UINT_PTR)Rsdp->XsdtAddress;
+        TableCount = (Rsdt->Header.Length - sizeof(ACPI_DESCRIPTION_HEADER)) / 8;
+    }
+    else
+    {
+        /* RSDP (ACPI 1.0) */
+        Xsdp = FALSE;
+        Rsdt = (PACPI_RSDT)(UINT_PTR)Rsdp->RsdtAddress;
+        TableCount = (Rsdt->Header.Length - sizeof(ACPI_DESCRIPTION_HEADER)) / 4;
+    }
+
+    /* Iterate over all ACPI tables */
+    for(TableIndex = 0; TableIndex < TableCount; TableIndex++)
+    {
+        /* Get table headers in reverse order */
+        RsdtIndex = TableCount - TableIndex - 1;
+
+        /* Check if XSDP or RSDT is used */
+        if(Xsdp)
+        {
+            /* Get table header from XSDT */
+            TableHeader = (PACPI_DESCRIPTION_HEADER)(ULONG_PTR)((PULONGLONG)Rsdt->Tables)[RsdtIndex];
+        }
+        else
+        {
+            /* Get table header from RSDT */
+            TableHeader = (PACPI_DESCRIPTION_HEADER)(ULONG_PTR)((PULONG)Rsdt->Tables)[RsdtIndex];
+        }
+
+        /* Check if previous table provided */
+        if(PreviousTable != NULLPTR)
+        {
+            /* Check if this is a table previously found */
+            if(TableHeader == (PVOID)PreviousTable)
+            {
+                /* Unset previous table */
+                PreviousTable = NULLPTR;
+            }
+
+            /* Skip to next ACPI table */
+            continue;
+        }
+
+        /* Verify table signature */
+        if((TableHeader->Signature == Signature))
+        {
+            /* Found requested ACPI table */
+            break;
+        }
+    }
+
+    /* Make sure table was found */
+    if(TableHeader->Signature != Signature)
+    {
+        /* ACPI table not found, return error */
+        return STATUS_EFI_NOT_FOUND;
+    }
+
+    /* Don't validate FADT on old, broken firmwares with ACPI 2.0 or older */
+    if(TableHeader->Signature != ACPI_FADT_SIGNATURE || TableHeader->Revision > 2)
+    {
+        /* Validate table checksum */
+        if(!ValidateAcpiTable(TableHeader, TableHeader->Length))
+        {
+            /* Checksum mismatch, return error */
+            return STATUS_EFI_CRC_ERROR;
+        }
+    }
+
+    /* Found valid ACPI table, return success */
+    *AcpiTable = TableHeader;
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Gets the Advanced Programmable Interrupt Controller (APIC) base address.
+ *
+ * @param ApicBase
+ *        Supplies a pointer to memory area where APIC base address will be stored.
+ *
+ * @return This routine returns an EFI status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Acpi::GetApicBase(OUT PVOID *ApicBase)
+{
+    CPUID_REGISTERS CpuRegisters;
+
+    /* Prepare CPUID registers to query for APIC support */
+    XtLdrProtocol->Memory.ZeroMemory(&CpuRegisters, sizeof(CPUID_REGISTERS));
+    CpuRegisters.Leaf = CPUID_GET_STANDARD1_FEATURES;
+
+    /* Query CPUID */
+    XtLdrProtocol->Cpu.CpuId(&CpuRegisters);
+
+    /* Check if APIC present */
+    if((CpuRegisters.Edx & CPUID_FEATURES_EDX_APIC) == 0)
+    {
+        /* APIC is not supported by the CPU */
+        return STATUS_EFI_UNSUPPORTED;
+    }
+
+    /* Get APIC base address */
+    *ApicBase = (PVOID)((UINT_PTR)XtLdrProtocol->Cpu.ReadModelSpecificRegister(0x1B) & 0xFFFFF000);
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Gets RSDP (ACPI 1.0) from EFI system configuration
+ *
+ * @param AcpiTable
+ *        Suplies a pointer to memory area where RSDP address will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Acpi::GetRsdpTable(OUT PVOID *AcpiTable)
+{
+    EFI_GUID AcpiGuid = EFI_CONFIG_TABLE_ACPI_TABLE_GUID;
+    EFI_STATUS Status;
+    PVOID RsdpTable;
+
+    /* Get RSDP (ACPI 1.0) table from system configuration tables */
+    Status = XtLdrProtocol->Utils.GetConfigurationTable(&AcpiGuid, &RsdpTable);
+    if(Status != STATUS_EFI_SUCCESS || !ValidateAcpiTable(RsdpTable, 20))
+    {
+        /* RSDP not found or checksum mismatch */
+        *AcpiTable = NULLPTR;
+        return STATUS_EFI_NOT_FOUND;
+    }
+
+    /* RSDP found, return success */
+    *AcpiTable = RsdpTable;
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Gets SMBIOS from EFI system configuration
+ *
+ * @param SmBiosTable
+ *        Suplies a pointer to memory area where SMBIOS address will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Acpi::GetSMBiosTable(OUT PVOID *SmBiosTable)
+{
+    EFI_GUID SmBiosGuid = EFI_CONFIG_TABLE_SMBIOS_TABLE_GUID;
+    PSMBIOS_TABLE_HEADER SmBios;
+    EFI_STATUS Status;
+
+    /* Get SMBIOS table from system configuration tables */
+    Status = XtLdrProtocol->Utils.GetConfigurationTable(&SmBiosGuid, (PVOID*)&SmBios);
+    if(Status != STATUS_EFI_SUCCESS || !ValidateAcpiTable(SmBios, SmBios->Length))
+    {
+        /* SMBIOS not found or checksum mismatch */
+        *SmBiosTable = NULLPTR;
+        return STATUS_EFI_NOT_FOUND;
+    }
+
+    /* SMBIOS found, return success */
+    *SmBiosTable = SmBios;
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Gets SMBIOS3 from EFI system configuration
+ *
+ * @param SmBiosTable
+ *        Suplies a pointer to memory area where SMBIOS3 address will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Acpi::GetSMBios3Table(OUT PVOID *SmBiosTable)
+{
+    EFI_GUID SmBios3Guid = EFI_CONFIG_TABLE_SMBIOS3_TABLE_GUID;
+    PSMBIOS3_TABLE_HEADER SmBios;
+    EFI_STATUS Status;
+
+    /* Get SMBIOS3 table from system configuration tables */
+    Status = XtLdrProtocol->Utils.GetConfigurationTable(&SmBios3Guid, (PVOID*)&SmBios);
+    if(Status != STATUS_EFI_SUCCESS || !ValidateAcpiTable(SmBios, SmBios->Length))
+    {
+        /* SMBIOS3 not found or checksum mismatch */
+        *SmBiosTable = NULLPTR;
+        return STATUS_EFI_NOT_FOUND;
+    }
+
+    /* SMBIOS3 found, return success */
+    *SmBiosTable = SmBios;
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Gets XSDP (ACPI 2.0) from EFI system configuration
+ *
+ * @param AcpiTable
+ *        Suplies a pointer to memory area where XSDP address will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Acpi::GetXsdpTable(OUT PVOID *AcpiTable)
+{
+    EFI_GUID AcpiGuid = EFI_CONFIG_TABLE_ACPI20_TABLE_GUID;
+    EFI_STATUS Status;
+    PVOID XsdpTable;
+
+    /* Get XSDP (ACPI 2.0) from system configuration tables */
+    Status = XtLdrProtocol->Utils.GetConfigurationTable(&AcpiGuid, &XsdpTable);
+    if(Status != STATUS_EFI_SUCCESS || !ValidateAcpiTable(XsdpTable, 36))
+    {
+        /* XSDP not found or checksum mismatch */
+        *AcpiTable = NULLPTR;
+        return STATUS_EFI_NOT_FOUND;
+    }
+
+    /* XSDP found, return success */
+    *AcpiTable = XsdpTable;
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Initializes ACPI module by opening XTLDR protocol and installing ACPI protocol.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Acpi::InitializeModule(IN EFI_HANDLE ImageHandle,
+                       IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    EFI_GUID Guid = XT_ACPI_PROTOCOL_GUID;
+    EFI_STATUS Status;
+
+    /* Open the XTLDR protocol */
+    Status = BlGetXtLdrProtocol(SystemTable, ImageHandle, &XtLdrProtocol);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open the protocol, return error */
+        return STATUS_EFI_PROTOCOL_ERROR;
+    }
+
+    /* Set routines available via ACPI protocol */
+    AcpiProtocol.GetAcpiDescriptionPointer = GetAcpiDescriptionPointer;
+    AcpiProtocol.GetAcpiTable = GetAcpiTable;
+    AcpiProtocol.GetApicBase = GetApicBase;
+    AcpiProtocol.GetRsdpTable = GetRsdpTable;
+    AcpiProtocol.GetSMBiosTable = GetSMBiosTable;
+    AcpiProtocol.GetSMBios3Table = GetSMBios3Table;
+    AcpiProtocol.GetXsdpTable = GetXsdpTable;
+
+    /* Install ACPI protocol */
+    return XtLdrProtocol->Protocol.Install(&AcpiProtocol, &Guid);
+}
+
+/**
+ * Validates given ACPI table by calculating its checksum.
+ *
+ * @param Buffer
+ *        Supplies a pointer to the table to checksum.
+ *
+ * @param Size
+ *        Supplies the size of the table, in bytes.
+ *
+ * @return This routine returns TRUE if the table is valid, or FALSE otherwise.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+BOOLEAN
+Acpi::ValidateAcpiTable(IN PVOID Buffer,
+                        IN UINT_PTR Size)
+{
+    PUCHAR Pointer;
+    UCHAR Sum;
+
+    /* Initialize variables */
+    Sum = 0;
+    Pointer = (PUCHAR)Buffer;
+
+    /* Calculate checksum of given table */
+    while(Size != 0)
+    {
+        Sum = (UCHAR)(Sum + *Pointer);
+        Pointer += 1;
+        Size -= 1;
+    }
+
+    /* Return calculated checksum */
+    return (Sum == 0) ? TRUE : FALSE;
+}
+
+/**
+ * This routine is the entry point of the XT EFI boot loader module.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+XtLdrModuleMain(IN EFI_HANDLE ImageHandle,
+                IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    /* Initialize ACPI module */
+    return Acpi::InitializeModule(ImageHandle, SystemTable);
+}
--- a/boot/xtldr/modules/acpi/data.cc
+++ b/boot/xtldr/modules/acpi/data.cc
@@ -0,0 +1,16 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/acpi/data.cc
+ * DESCRIPTION:     ACPI module global and static data
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <acpi.hh>
+
+
+/* ACPI Protocol */
+XTBL_ACPI_PROTOCOL Acpi::AcpiProtocol;
+
+/* XTLDR protocol handler */
+PXTBL_LOADER_PROTOCOL Acpi::XtLdrProtocol;
--- a/boot/xtldr/modules/acpi/includes/acpi.hh
+++ b/boot/xtldr/modules/acpi/includes/acpi.hh
@@ -0,0 +1,40 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/acpi/includes/acpi.hh
+ * DESCRIPTION:     XTLDR ACPI module header file
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTLDR_ACPI_ACPI_HH
+#define __XTLDR_ACPI_ACPI_HH
+
+#include <xtblapi.h>
+
+
+/* ACPI module for XTLDR */
+class Acpi
+{
+    private:
+        STATIC XTBL_ACPI_PROTOCOL AcpiProtocol;
+        STATIC PXTBL_LOADER_PROTOCOL XtLdrProtocol;
+
+    public:
+        STATIC XTCDECL EFI_STATUS GetAcpiDescriptionPointer(OUT PVOID *AcpiTable);
+        STATIC XTCDECL EFI_STATUS GetAcpiTable(IN CONST UINT Signature,
+                                               IN PVOID PreviousTable,
+                                               OUT PVOID *AcpiTable);
+        STATIC XTCDECL EFI_STATUS GetApicBase(OUT PVOID *ApicBase);
+        STATIC XTCDECL EFI_STATUS GetRsdpTable(OUT PVOID *AcpiTable);
+        STATIC XTCDECL EFI_STATUS GetSMBiosTable(OUT PVOID *SmBiosTable);
+        STATIC XTCDECL EFI_STATUS GetSMBios3Table(OUT PVOID *SmBiosTable);
+        STATIC XTCDECL EFI_STATUS GetXsdpTable(OUT PVOID *AcpiTable);
+        STATIC XTCDECL EFI_STATUS InitializeModule(IN EFI_HANDLE ImageHandle,
+                                                   IN PEFI_SYSTEM_TABLE SystemTable);
+
+    private:
+        STATIC XTCDECL BOOLEAN ValidateAcpiTable(IN PVOID Buffer,
+                                                 IN UINT_PTR Size);
+};
+
+#endif /* __XTLDR_ACPI_ACPI_HH */
--- a/boot/xtldr/modules/beep/CMakeLists.txt
+++ b/boot/xtldr/modules/beep/CMakeLists.txt
@@ -0,0 +1,27 @@
+# XT Boot Loader Beep Module
+PROJECT(XTLDR_BEEP)
+
+# Specify include directories
+include_directories(
+    ${EXECTOS_SOURCE_DIR}/sdk/xtdk
+    ${XTLDR_BEEP_SOURCE_DIR}/includes)
+
+# Specify list of source code files
+list(APPEND XTLDR_BEEP_SOURCE
+    ${XTLDR_BEEP_SOURCE_DIR}/beep.cc
+    ${XTLDR_BEEP_SOURCE_DIR}/data.cc)
+
+# Link module executable
+add_executable(beep ${XTLDR_BEEP_SOURCE})
+
+# Add linker libraries
+target_link_libraries(beep libxtldr libxtos)
+
+# Set proper binary name and install target
+set_target_properties(beep PROPERTIES SUFFIX .efi)
+set_install_target(beep efi/boot/xtldr/modules)
+
+# Set module entrypoint and subsystem
+set_entrypoint(beep "XtLdrModuleMain")
+set_linker_map(beep TRUE)
+set_subsystem(beep efi_boot_service_driver)
--- a/boot/xtldr/modules/beep/beep.cc
+++ b/boot/xtldr/modules/beep/beep.cc
@@ -0,0 +1,238 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/beep/beep.cc
+ * DESCRIPTION:     XTLDR Beep Module
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <beep.hh>
+
+
+/* Beep module information */
+MODULE_AUTHOR(L"Rafal Kupiec <belliash@codingworkshop.eu.org>");
+MODULE_DESCRIPTION(L"Plays a GRUB compatible tune via PC speaker");
+MODULE_LICENSE(L"GPLv3");
+MODULE_VERSION(L"0.1");
+
+
+/**
+ * Disables the PC speaker.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+Beep::DisableToneBeep()
+{
+    UCHAR Status;
+
+    /* Stop the PC speaker */
+    Status = XtLdrProtocol->IoPort.Read8(0x61);
+    XtLdrProtocol->IoPort.Write8(0x61, Status & 0xFC);
+}
+
+/**
+ * Enables the PC speaker and plays a sound.
+ *
+ * @param Pitch
+ *        Specifies a pitch (in Hz) of the sound.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+Beep::EnableToneBeep(IN UINT Pitch)
+{
+    UINT Counter;
+    UCHAR Status;
+
+    /* Pitch only in range of 20..20000 */
+    if(Pitch < 20)
+    {
+        Pitch = 20;
+    }
+    else if(Pitch > 20000)
+    {
+        Pitch = 20000;
+    }
+
+    /* Set the desired frequency of the PIT clock */
+    Counter = 0x1234DD / Pitch;
+    XtLdrProtocol->IoPort.Write8(0x43, 0xB6);
+    XtLdrProtocol->IoPort.Write8(0x43, 0xB6);
+    XtLdrProtocol->IoPort.Write8(0x42, (UCHAR) Counter & 0xFF);
+    XtLdrProtocol->IoPort.Write8(0x42, (UCHAR) (Counter >> 8) & 0xFF);
+
+    /* Start the PC speaker */
+    Status = XtLdrProtocol->IoPort.Read8(0x61);
+    XtLdrProtocol->IoPort.Write8(0x61, Status | 0x03);
+}
+
+/**
+ * Initializes BEEP module by opening XTLDR protocol and playing the tune.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Beep::InitializeModule(IN EFI_HANDLE ImageHandle,
+                       IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    EFI_STATUS Status;
+    PWCHAR Tune;
+
+    /* Open the XTLDR protocol */
+    Status = BlGetXtLdrProtocol(SystemTable, ImageHandle, &XtLdrProtocol);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open the protocol, return error */
+        return STATUS_EFI_PROTOCOL_ERROR;
+    }
+
+    /* Play the tune set in the configuration */
+    XtLdrProtocol->Config.GetValue(L"TUNE", &Tune);
+    PlayTune(Tune);
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * This routine plays a tune.
+ *
+ * @param Arguments
+ *        Optional list of parameters provided with the command.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+Beep::PlayTune(IN PWCHAR Arguments)
+{
+    LONG Pitch, Duration, Tempo;
+    PWCHAR Argument, LastArgument;
+
+    /* Reset pitch and duration */
+    Duration = -1;
+    Pitch = -1;
+    Tempo = -1;
+
+    /* Tokenize provided list of arguments */
+    Argument = XtLdrProtocol->WideString.Tokenize(Arguments, L" ", &LastArgument);
+
+    /* Iterate over all arguments */
+    while(Argument != NULLPTR)
+    {
+        /* Check if tempo, pitch and duration are set */
+        if(Tempo < 0)
+        {
+            /* Set the tempo */
+            Tempo = WideStringToNumber(Argument);
+        }
+        else if(Pitch < 0)
+        {
+            /* Set the pitch */
+            Pitch = WideStringToNumber(Argument);
+        }
+        else
+        {
+            /* Set the duration */
+            Duration = WideStringToNumber(Argument);
+
+            /* Check pitch value */
+            if(Pitch > 0)
+            {
+                /* Emit the beep tone */
+                EnableToneBeep(Pitch);
+            }
+            else
+            {
+                /* Stop emitting beep tone */
+                DisableToneBeep();
+            }
+
+            /* Wait for duration time */
+            XtLdrProtocol->Utils.SleepExecution(60000 * Duration / Tempo);
+
+            /* Reset pitch and duration */
+            Pitch = -1;
+            Duration = -1;
+        }
+
+        /* Get next argument */
+        Argument = XtLdrProtocol->WideString.Tokenize(NULLPTR, L" ", &LastArgument);
+    }
+
+    /* Stop emitting beep tone */
+    DisableToneBeep();
+}
+
+/**
+ * Converts a wide string into a number.
+ *
+ * @param String
+ *        Supplies an input wide string.
+ *
+ * @return This routine returns the number that was converted from the wide string.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+UINT
+Beep::WideStringToNumber(IN PWCHAR String)
+{
+    ULONG Number = 0;
+
+    /* Iterate over all characters until '\0' found */
+    do
+    {
+        /* Check if this is a digit */
+        if(*String - '0' < 10)
+        {
+            /* Add another digit to the number */
+            Number *= 10;
+            Number += *String - '0';
+        }
+    }
+    while(*++String != L'\0');
+
+    /* Return number */
+    return Number;
+}
+
+/**
+ * This routine is the entry point of the XT EFI boot loader module.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+XtLdrModuleMain(IN EFI_HANDLE ImageHandle,
+                IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    /* Initialize BEEP module */
+    return Beep::InitializeModule(ImageHandle, SystemTable);
+}
--- a/boot/xtldr/modules/beep/data.cc
+++ b/boot/xtldr/modules/beep/data.cc
@@ -0,0 +1,13 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/beep/data.cc
+ * DESCRIPTION:     BEEP module global and static data
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <beep.hh>
+
+
+/* XTLDR protocol handler */
+PXTBL_LOADER_PROTOCOL Beep::XtLdrProtocol;
--- a/boot/xtldr/modules/beep/includes/beep.hh
+++ b/boot/xtldr/modules/beep/includes/beep.hh
@@ -0,0 +1,32 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/beep/includes/beep.hh
+ * DESCRIPTION:     XTLDR Beep Module header file
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTLDR_BEEP_BEEP_HH
+#define __XTLDR_BEEP_BEEP_HH
+
+#include <xtblapi.h>
+
+
+/* BEEP module for XTLDR */
+class Beep
+{
+    private:
+        STATIC PXTBL_LOADER_PROTOCOL XtLdrProtocol;
+
+    public:
+        STATIC XTCDECL EFI_STATUS InitializeModule(IN EFI_HANDLE ImageHandle,
+                                                   IN PEFI_SYSTEM_TABLE SystemTable);
+        STATIC XTCDECL VOID PlayTune(IN PWCHAR Arguments);
+
+    private:
+        STATIC XTCDECL VOID DisableToneBeep();
+        STATIC XTCDECL VOID EnableToneBeep(IN UINT Pitch);
+        STATIC XTCDECL UINT WideStringToNumber(IN PWCHAR String);
+};
+
+#endif /* __XTLDR_BEEP_BEEP_HH */
--- a/boot/xtldr/modules/chainldr/CMakeLists.txt
+++ b/boot/xtldr/modules/chainldr/CMakeLists.txt
@@ -0,0 +1,27 @@
+# XTLDR Chain Loader Module
+PROJECT(XTLDR_CHAINLDR)
+
+# Specify include directories
+include_directories(
+    ${EXECTOS_SOURCE_DIR}/sdk/xtdk
+    ${XTLDR_CHAINLDR_SOURCE_DIR}/includes)
+
+# Specify list of source code files
+list(APPEND XTLDR_CHAINLDR_SOURCE
+    ${XTLDR_CHAINLDR_SOURCE_DIR}/chainldr.cc
+    ${XTLDR_CHAINLDR_SOURCE_DIR}/data.cc)
+
+# Link module executable
+add_executable(chainldr ${XTLDR_CHAINLDR_SOURCE})
+
+# Add linker libraries
+target_link_libraries(chainldr libxtldr libxtos)
+
+# Set proper binary name and install target
+set_target_properties(chainldr PROPERTIES SUFFIX .efi)
+set_install_target(chainldr efi/boot/xtldr/modules)
+
+# Set module entrypoint and subsystem
+set_entrypoint(chainldr "XtLdrModuleMain")
+set_linker_map(chainldr TRUE)
+set_subsystem(chainldr efi_boot_service_driver)
--- a/boot/xtldr/modules/chainldr/chainldr.cc
+++ b/boot/xtldr/modules/chainldr/chainldr.cc
@@ -0,0 +1,186 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/chainldr/chainldr.cc
+ * DESCRIPTION:     XTLDR Chain Loader
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <chainldr.hh>
+
+
+/* ChainLoader module information */
+MODULE_AUTHOR(L"Rafal Kupiec <belliash@codingworkshop.eu.org>");
+MODULE_DESCRIPTION(L"XTLDR Chain Loader");
+MODULE_LICENSE(L"GPLv3");
+MODULE_VERSION(L"0.1");
+
+
+/**
+ * Chainloads another boot loader.
+ *
+ * @param Parameters
+ *        Input parameters with detailed system configuration.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+ChainLoader::BootSystem(IN PXTBL_BOOT_PARAMETERS Parameters)
+{
+    EFI_GUID LIPGuid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
+    EFI_MEMMAP_DEVICE_PATH MemoryDevicePath[2];
+    PEFI_LOADED_IMAGE_PROTOCOL LoadedImage;
+    EFI_HANDLE DiskHandle, LoaderHandle;
+    PEFI_FILE_HANDLE FsHandle, BootDir;
+    EFI_STATUS Status;
+    SIZE_T LoaderSize;
+    PVOID LoaderData;
+
+    /* Check if image file is provided */
+    if(Parameters->KernelFile == NULLPTR)
+    {
+        /* No image filename provided, return error code */
+        XtLdrProtocol->Debug.Print(L"ERROR: No EFI image filename provided\n");
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Open EFI volume */
+    Status = XtLdrProtocol->Disk.OpenVolume(Parameters->DevicePath, &DiskHandle, &FsHandle);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open a volume, return error code */
+        XtLdrProtocol->Debug.Print(L"ERROR: Unable to open boot volume (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* Open boot directory and close FS handle */
+    Status = FsHandle->Open(FsHandle, &BootDir, Parameters->EfiPath, EFI_FILE_MODE_READ, 0);
+    FsHandle->Close(FsHandle);
+
+    /* Check if system path directory opened successfully */
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open directory */
+        XtLdrProtocol->Debug.Print(L"ERROR: Unable to open system boot directory (Status Code: 0x%zX)\n", Status);
+
+        /* Close volume and return error code */
+        XtLdrProtocol->Disk.CloseVolume(&DiskHandle);
+        return Status;
+    }
+
+    /* Read EFI image file from disk and close both directory and EFI volume */
+    Status = XtLdrProtocol->Disk.ReadFile(BootDir, Parameters->KernelFile, &LoaderData, &LoaderSize);
+    BootDir->Close(BootDir);
+    XtLdrProtocol->Disk.CloseVolume(&DiskHandle);
+
+    /* Setup device path for EFI image */
+    MemoryDevicePath[0].Header.Length[0] = sizeof(EFI_MEMMAP_DEVICE_PATH);
+    MemoryDevicePath[0].Header.Length[1] = sizeof(EFI_MEMMAP_DEVICE_PATH) >> 8;
+    MemoryDevicePath[0].Header.Type = EFI_HARDWARE_DEVICE_PATH;
+    MemoryDevicePath[0].Header.SubType = EFI_HARDWARE_MEMMAP_DP;
+    MemoryDevicePath[0].MemoryType = EfiLoaderData;
+    MemoryDevicePath[0].StartingAddress = (UINT_PTR)LoaderData;
+    MemoryDevicePath[0].EndingAddress = (UINT_PTR)LoaderData + LoaderSize;
+    MemoryDevicePath[1].Header.Length[0] = sizeof(EFI_DEVICE_PATH_PROTOCOL);
+    MemoryDevicePath[1].Header.Length[1] = sizeof(EFI_DEVICE_PATH_PROTOCOL) >> 8;
+    MemoryDevicePath[1].Header.Type = EFI_END_DEVICE_PATH;
+    MemoryDevicePath[1].Header.SubType = EFI_END_ENTIRE_DP;
+
+    /* Load EFI image */
+    Status = XtLdrProtocol->Utils.LoadEfiImage((PEFI_DEVICE_PATH_PROTOCOL)MemoryDevicePath,
+                                               LoaderData, LoaderSize, &LoaderHandle);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to chainload EFI binary, return error code */
+        XtLdrProtocol->Debug.Print(L"ERROR: Unable to chainload '%S' (Status Code: 0x%zX)\n",
+                                   Parameters->KernelFile, Status);
+        return Status;
+    }
+
+    /* Access loaded image protocol */
+    Status = XtLdrProtocol->Protocol.OpenHandle(LoaderHandle, (PVOID *)&LoadedImage, &LIPGuid);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open EFI_LOADED_IMAGE_PROTOCOL, return error code */
+        XtLdrProtocol->Debug.Print(L"ERROR: Unable to access binary interface (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* Check if parameters provided */
+    if(Parameters->Parameters)
+    {
+        /* Pass arguments to chainloaded image */
+        LoadedImage->LoadOptionsSize = XtLdrProtocol->WideString.Length(Parameters->Parameters, 0) * sizeof(WCHAR);
+        LoadedImage->LoadOptions = Parameters->Parameters;
+    }
+
+    /* Set device handle as LoadImage() is not going to do it */
+    LoadedImage->DeviceHandle = DiskHandle;
+
+    /* Chainload EFI image */
+    return XtLdrProtocol->Utils.StartEfiImage(LoaderHandle);
+}
+
+/**
+ * Initializes CHAINLDR module by opening XTLDR protocol and installing CHAINLOADER protocol.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+ChainLoader::InitializeModule(IN EFI_HANDLE ImageHandle,
+                              IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    EFI_GUID Guid = XT_CHAIN_BOOT_PROTOCOL_GUID;
+    EFI_STATUS Status;
+
+    /* Open the XTLDR protocol */
+    Status = BlGetXtLdrProtocol(SystemTable, ImageHandle, &XtLdrProtocol);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open the protocol, return error */
+        return STATUS_EFI_PROTOCOL_ERROR;
+    }
+
+    /* Set routines available via ChainLoader boot protocol */
+    BootProtocol.BootSystem = BootSystem;
+
+    /* Register XTOS boot protocol */
+    XtLdrProtocol->Boot.RegisterProtocol(L"CHAINLOADER", &Guid);
+
+    /* Install XTOS protocol */
+    return XtLdrProtocol->Protocol.Install(&BootProtocol, &Guid);
+}
+
+/**
+ * This routine is the entry point of the XT EFI boot loader module.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+XtLdrModuleMain(IN EFI_HANDLE ImageHandle,
+                IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    /* Initialize CHAINLDR module */
+    return ChainLoader::InitializeModule(ImageHandle, SystemTable);
+}
--- a/boot/xtldr/modules/chainldr/data.cc
+++ b/boot/xtldr/modules/chainldr/data.cc
@@ -0,0 +1,16 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/chainldr/data.cc
+ * DESCRIPTION:     CHAINLDR module global and static data
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <chainldr.hh>
+
+
+/* ChainLoader Boot Protocol */
+XTBL_BOOT_PROTOCOL ChainLoader::BootProtocol;
+
+/* XTLDR protocol handler */
+PXTBL_LOADER_PROTOCOL ChainLoader::XtLdrProtocol;
--- a/boot/xtldr/modules/chainldr/includes/chainldr.hh
+++ b/boot/xtldr/modules/chainldr/includes/chainldr.hh
@@ -0,0 +1,28 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/chainldr/includes/chainldr.hh
+ * DESCRIPTION:     XTLDR Chain Loader header file
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTLDR_CHAINLDR_CHAINLDR_HH
+#define __XTLDR_CHAINLDR_CHAINLDR_HH
+
+#include <xtblapi.h>
+
+
+/* CHAINLDR module for XTLDR */
+class ChainLoader
+{
+    private:
+        STATIC XTBL_BOOT_PROTOCOL BootProtocol;
+        STATIC PXTBL_LOADER_PROTOCOL XtLdrProtocol;
+
+    public:
+        STATIC XTCDECL EFI_STATUS BootSystem(IN PXTBL_BOOT_PARAMETERS Parameters);
+        STATIC XTCDECL EFI_STATUS InitializeModule(IN EFI_HANDLE ImageHandle,
+                                                   IN PEFI_SYSTEM_TABLE SystemTable);
+};
+
+#endif /* __XTLDR_CHAINLDR_CHAINLDR_HH */
--- a/boot/xtldr/modules/dummy/CMakeLists.txt
+++ b/boot/xtldr/modules/dummy/CMakeLists.txt
@@ -0,0 +1,27 @@
+# XT Boot Loader Dummy Module
+PROJECT(XTLDR_DUMMY)
+
+# Specify include directories
+include_directories(
+    ${EXECTOS_SOURCE_DIR}/sdk/xtdk
+    ${XTLDR_DUMMY_SOURCE_DIR}/includes)
+
+# Specify list of source code files
+list(APPEND XTLDR_DUMMY_SOURCE
+    ${XTLDR_DUMMY_SOURCE_DIR}/dummy.cc
+    ${XTLDR_DUMMY_SOURCE_DIR}/data.cc)
+
+# Link module executable
+add_executable(dummy ${XTLDR_DUMMY_SOURCE})
+
+# Add linker libraries
+target_link_libraries(dummy libxtldr)
+
+# Set proper binary name and install target
+set_target_properties(dummy PROPERTIES SUFFIX .efi)
+set_install_target(dummy efi/boot/xtldr/modules)
+
+# Set module entrypoint and subsystem
+set_entrypoint(dummy "XtLdrModuleMain")
+set_linker_map(dummy TRUE)
+set_subsystem(dummy efi_boot_service_driver)
--- a/boot/xtldr/modules/dummy/data.cc
+++ b/boot/xtldr/modules/dummy/data.cc
@@ -0,0 +1,16 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/dummy/data.cc
+ * DESCRIPTION:     Dummy XTLDR module global and static data
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <dummy.hh>
+
+
+/* Dummy Boot Protocol handler */
+XTBL_BOOT_PROTOCOL Dummy::DummyProtocol;
+
+/* XTLDR protocol handler */
+PXTBL_LOADER_PROTOCOL Dummy::XtLdrProtocol;
--- a/boot/xtldr/modules/dummy/dummy.cc
+++ b/boot/xtldr/modules/dummy/dummy.cc
@@ -0,0 +1,95 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/dummy/dummy.cc
+ * DESCRIPTION:     XTLDR Dummy Module
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <dummy.hh>
+
+
+/* Dummy module information */
+MODULE_AUTHOR(L"Rafal Kupiec <belliash@codingworkshop.eu.org>");
+MODULE_DESCRIPTION(L"XTLDR Dummy Module");
+MODULE_LICENSE(L"GPLv3");
+MODULE_VERSION(L"0.1");
+
+
+/**
+ * Stub boot routine.
+ *
+ * @param Parameters
+ *        Supplies all parameters associated with the chosen boot menu entry.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Dummy::BootSystem(IN PXTBL_BOOT_PARAMETERS Parameters)
+{
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Initializes DUMMY module by opening XTLDR protocol and installing DUMMY protocol.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Dummy::InitializeModule(IN EFI_HANDLE ImageHandle,
+                        IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    EFI_GUID DummyGuid = XT_DUMMY_BOOT_PROTOCOL_GUID;
+    EFI_STATUS Status;
+
+    /* Open the XTLDR protocol */
+    Status = BlGetXtLdrProtocol(SystemTable, ImageHandle, &XtLdrProtocol);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open the protocol, return error */
+        return STATUS_EFI_PROTOCOL_ERROR;
+    }
+
+    /* Set boot protocol routines */
+    DummyProtocol.BootSystem = BootSystem;
+
+    /* Register XTOS boot protocol */
+    XtLdrProtocol->Boot.RegisterProtocol(L"DUMMYOS", &DummyGuid);
+
+    /* Register DUMMY protocol as XTOS boot protocol */
+    return XtLdrProtocol->Protocol.Install(&DummyProtocol, &DummyGuid);
+}
+
+/**
+ * This routine is the entry point of the XT EFI boot loader module.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+XtLdrModuleMain(IN EFI_HANDLE ImageHandle,
+                IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    /* Initialize DUMMY module */
+    return Dummy::InitializeModule(ImageHandle, SystemTable);
+}
--- a/boot/xtldr/modules/dummy/includes/dummy.hh
+++ b/boot/xtldr/modules/dummy/includes/dummy.hh
@@ -0,0 +1,28 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/dummy/includes/dummy.hh
+ * DESCRIPTION:     XTLDR Dummy Module header file
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTLDR_DUMMY_DUMMY_HH
+#define __XTLDR_DUMMY_DUMMY_HH
+
+#include <xtblapi.h>
+
+
+/* DUMMY module for XTLDR */
+class Dummy
+{
+    private:
+        STATIC XTBL_BOOT_PROTOCOL DummyProtocol;
+        STATIC PXTBL_LOADER_PROTOCOL XtLdrProtocol;
+
+    public:
+        STATIC EFI_STATUS BootSystem(IN PXTBL_BOOT_PARAMETERS Parameters);
+        STATIC EFI_STATUS InitializeModule(IN EFI_HANDLE ImageHandle,
+                                           IN PEFI_SYSTEM_TABLE SystemTable);
+};
+
+#endif/* __XTLDR_DUMMY_DUMMY_HH */
--- a/boot/xtldr/modules/framebuf/CMakeLists.txt
+++ b/boot/xtldr/modules/framebuf/CMakeLists.txt
@@ -0,0 +1,27 @@
+# XTLDR FrameBuffer support module
+PROJECT(XTLDR_FRAMEBUF)
+
+# Specify include directories
+include_directories(
+    ${EXECTOS_SOURCE_DIR}/sdk/xtdk
+    ${XTLDR_FRAMEBUF_SOURCE_DIR}/includes)
+
+# Specify list of source code files
+list(APPEND XTLDR_FRAMEBUF_SOURCE
+    ${XTLDR_FRAMEBUF_SOURCE_DIR}/framebuf.cc
+    ${XTLDR_FRAMEBUF_SOURCE_DIR}/data.cc)
+
+# Link bootloader executable
+add_executable(framebuf ${XTLDR_FRAMEBUF_SOURCE})
+
+# Add linker libraries
+target_link_libraries(framebuf libxtldr)
+
+# Set proper binary name and install target
+set_target_properties(framebuf PROPERTIES SUFFIX .efi)
+set_install_target(framebuf efi/boot/xtldr/modules)
+
+# Set module entrypoint and subsystem
+set_entrypoint(framebuf "XtLdrModuleMain")
+set_linker_map(framebuf TRUE)
+set_subsystem(framebuf efi_boot_service_driver)
--- a/boot/xtldr/modules/framebuf/data.cc
+++ b/boot/xtldr/modules/framebuf/data.cc
@@ -0,0 +1,19 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/framebuf/data.cc
+ * DESCRIPTION:     EFI framebuffer module global and static data
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <framebuf.hh>
+
+
+/* Framebuffer display information */
+XTBL_FRAMEBUFFER_INFORMATION FrameBuffer::DisplayInfo;
+
+/* Framebuffer protocol handler */
+XTBL_FRAMEBUFFER_PROTOCOL FrameBuffer::FbProtocol;
+
+/* XTLDR protocol handler */
+PXTBL_LOADER_PROTOCOL FrameBuffer::XtLdrProtocol;
--- a/boot/xtldr/modules/framebuf/framebuf.cc
+++ b/boot/xtldr/modules/framebuf/framebuf.cc
@@ -0,0 +1,810 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/framebuf/framebuf.cc
+ * DESCRIPTION:     EFI framebuffer support module for XTLDR
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <framebuf.hh>
+
+
+/* PE/COFF_O module information */
+MODULE_AUTHOR(L"Rafal Kupiec <belliash@codingworkshop.eu.org>");
+MODULE_DESCRIPTION(L"EFI FB (FrameBuffer) support");
+MODULE_LICENSE(L"GPLv3");
+MODULE_VERSION(L"0.2");
+
+
+/**
+ * Finds a PCI Display Adapter and returns its framebuffer address.
+ *
+ * @param Address
+ *        Supplies a pointer to the memory area where framebuffer address will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+FrameBuffer::FindFramebufferAddress(OUT PEFI_PHYSICAL_ADDRESS Address)
+{
+    EFI_GUID PciIoGuid = EFI_PCI_IO_PROTOCOL_GUID;
+    PEFI_ACPI_ADDRESS_SPACE_DESCRIPTOR BarInfo;
+    PEFI_PCI_IO_PROTOCOL IoProtocol;
+    ULONGLONG FramebufAddressLength;
+    PCI_TYPE0_DEVICE PciDevice;
+    PVOID FramebufAddress;
+    UINT_PTR HandlesCount;
+    EFI_HANDLE *Handles;
+    EFI_STATUS Status;
+    UINT Index;
+
+    /* Initialize variables */
+    FramebufAddressLength = 0;
+    Handles = NULLPTR;
+
+    /* Locate EFI_PCI_IO_PROTOCOL handles */
+    Status = XtLdrProtocol->Protocol.LocateHandles(&Handles, &HandlesCount, &PciIoGuid);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to get handles, return error code */
+        XtLdrProtocol->Debug.Print(L"ERROR: Failed to get handles (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* Iterate through handles */
+    for(Index = 0; Index < HandlesCount; Index++)
+    {
+        /* Open EFI_PCI_IO_PROTOCOL handle */
+        Status = XtLdrProtocol->Protocol.OpenHandle(Handles[Index], (PVOID *)&IoProtocol, &PciIoGuid);
+        if(Status != STATUS_EFI_SUCCESS)
+        {
+            /* Failed to open protocol, continue with next handle */
+            XtLdrProtocol->Debug.Print(L"ERROR: Failed to open protocol (Status Code: 0x%zX)\n", Status);
+            continue;
+        }
+
+        /* Read PCI controller registers from PCI configuration space */
+        Status = IoProtocol->Pci.Read(IoProtocol, EfiPciIoWidthUint32, 0, sizeof(PciDevice) / sizeof(UINT), &PciDevice);
+        if(Status != STATUS_EFI_SUCCESS)
+        {
+            /* Failed to read PCI device class */
+            XtLdrProtocol->Debug.Print(L"ERROR: Failed to read class (Status Code: 0x%zX)\n", Status);
+
+            /* Close protocol and continue with next handle */
+            XtLdrProtocol->Protocol.Close(&Handles[Index], &PciIoGuid);
+            continue;
+        }
+
+        /* Check if device is a graphics adapter */
+        if(PciDevice.Hdr.ClassCode[2] != 0x03)
+        {
+            /* Not a graphics adapter, close protocol and continue with next handle */
+            XtLdrProtocol->Protocol.Close(&Handles[Index], &PciIoGuid);
+            continue;
+        }
+
+        /* Iterate through all PCI device's Base Address Registers (BARs) */
+        for(UINT Bars = 0; Bars < 6; Bars++)
+        {
+            /* Get BAR attributes */
+            Status = IoProtocol->GetBarAttributes(IoProtocol, Bars, NULLPTR, (VOID **)&BarInfo);
+            if(Status != STATUS_EFI_SUCCESS)
+            {
+                /* Failed to get BAR attributes, continue with next BAR */
+                continue;
+            }
+
+            /* Check if this BAR is 'Memory Range' of 'ACPI QWORD Address Space' */
+            if(BarInfo->SpaceDescriptor == EFI_ACPI_ADDRESS64_SPACE_DESCRIPTOR &&
+               BarInfo->ResourceType == EFI_ACPI_ADDRESS_SPACE_TYPE_MEMORY)
+            {
+                /* Check if this BAR is the biggest we've seen so far */
+                if(BarInfo->AddressLength > FramebufAddressLength)
+                {
+                    /* The biggest BAR should be the framebuffer; save its address and length */
+                    FramebufAddress = (PVOID)(ULONG_PTR)(BarInfo->AddressRangeMin << 16);
+                    FramebufAddressLength = BarInfo->AddressLength;
+                }
+            }
+        }
+
+        /* Close handle and continue with next one */
+        XtLdrProtocol->Protocol.Close(&Handles[Index], &PciIoGuid);
+    }
+
+    /* Set framebuffer address and return success */
+    *Address = (EFI_PHYSICAL_ADDRESS)FramebufAddress;
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Calculates color mask and shift based upon pixel bit mask.
+ *
+ * @param PixelBitMask
+ *        Provides a pixel bit mask.
+ *
+ * @param ColorSize
+ *        Supplies a pointer to the memory area where the color size will be stored.
+ *
+ * @param ColorShift
+ *        Supplies a pointer to the memory area where the color shift (position) will be stored.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+FrameBuffer::GetColorMask(IN UINT PixelBitMask,
+                          OUT PUSHORT ColorSize,
+                          OUT PUSHORT ColorShift)
+{
+    UINT Shift, Size;
+
+    /* Initialize variables */
+    Shift = 0;
+    Size = 0;
+
+    /* Make sure EfiMask is not zero */
+    if(PixelBitMask)
+    {
+        /* Get color shift */
+        while((PixelBitMask & 1) == 0)
+        {
+            Shift++;
+            PixelBitMask >>= 1;
+        }
+
+        /* Get color size */
+        while((PixelBitMask & 1) == 1)
+        {
+            Size++;
+            PixelBitMask >>= 1;
+        }
+
+    }
+
+    /* Set color mask and shift */
+    *ColorShift = Shift;
+    *ColorSize = Size;
+}
+
+/**
+ * Provides an EFI Frame Buffer protocol driver name used for initialization.
+ *
+ * @param Protocol
+ *        Supplies a pointer to the memory area where framebuffer driver information will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+FrameBuffer::GetDisplayDriver(OUT PEFI_GRAPHICS_PROTOCOL Protocol)
+{
+        /* Check if framebuffer is initialized */
+    if(!DisplayInfo.Initialized)
+    {
+        /* Return error if framebuffer is not initialized */
+        return STATUS_EFI_NOT_READY;
+    }
+
+    /* Copy framebuffer driver information */
+    *Protocol = DisplayInfo.Protocol;
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Returns information about EFI Frame Buffer.
+ *
+ * @param FbInfo
+ *        Supplies a pointer to the memory area where framebuffer information will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+FrameBuffer::GetDisplayInformation(OUT PEFI_PHYSICAL_ADDRESS FrameBufferBase,
+                                   OUT PULONG_PTR FrameBufferSize,
+                                   OUT PXTBL_FRAMEBUFFER_MODE_INFORMATION ModeInfo)
+{
+    /* Check if framebuffer is initialized */
+    if(!DisplayInfo.Initialized)
+    {
+        /* Return error if framebuffer is not initialized */
+        return STATUS_EFI_NOT_READY;
+    }
+
+    /* Set basic framebuffer information */
+    *FrameBufferBase = DisplayInfo.FrameBufferBase;
+    *FrameBufferSize = DisplayInfo.FrameBufferSize;
+
+    /* Set framebuffer mode information */
+    ModeInfo->Width = DisplayInfo.ModeInfo.Width;
+    ModeInfo->Height = DisplayInfo.ModeInfo.Height;
+    ModeInfo->Depth = DisplayInfo.ModeInfo.Depth;
+    ModeInfo->RefreshRate = DisplayInfo.ModeInfo.RefreshRate;
+    ModeInfo->BitsPerPixel = DisplayInfo.ModeInfo.BitsPerPixel;
+    ModeInfo->BytesPerPixel = DisplayInfo.ModeInfo.BytesPerPixel;
+    ModeInfo->PixelsPerScanLine = DisplayInfo.ModeInfo.PixelsPerScanLine;
+    ModeInfo->Pitch = DisplayInfo.ModeInfo.Pitch;
+    ModeInfo->PixelFormat = DisplayInfo.ModeInfo.PixelFormat;
+    ModeInfo->PixelInformation = DisplayInfo.ModeInfo.PixelInformation;
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+
+/**
+ * Gets information about the current display mode and stores it in internal structure.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+FrameBuffer::GetModeInformation()
+{
+    PEFI_GRAPHICS_OUTPUT_MODE_INFORMATION ModeInfo;
+    EFI_PIXEL_BITMASK PixelBitMask;
+    XTSTATUS Status;
+    UINT_PTR Size;
+
+    switch(DisplayInfo.Protocol)
+    {
+        case GOP:
+            /* Query GOP mode information */
+            Status = DisplayInfo.Driver.Gop->QueryMode(DisplayInfo.Driver.Gop,
+                                                          DisplayInfo.Driver.Gop->Mode->Mode,
+                                                          &Size, &ModeInfo);
+            if(Status != STATUS_EFI_SUCCESS)
+            {
+                /* Failed to get GOP mode information, return error */
+                return Status;
+            }
+
+            /* Get pixel bit mask information */
+            GetPixelInformation(&DisplayInfo.Driver.Gop->Mode->Info->PixelInformation);
+
+            /* Store GOP framebuffer information */
+            DisplayInfo.ModeInfo.Width = DisplayInfo.Driver.Gop->Mode->Info->HorizontalResolution;
+            DisplayInfo.ModeInfo.Height = DisplayInfo.Driver.Gop->Mode->Info->VerticalResolution;
+            DisplayInfo.ModeInfo.Depth = DisplayInfo.ModeInfo.BitsPerPixel;
+            DisplayInfo.ModeInfo.PixelsPerScanLine = DisplayInfo.Driver.Gop->Mode->Info->PixelsPerScanLine;
+            DisplayInfo.ModeInfo.Pitch = DisplayInfo.ModeInfo.PixelsPerScanLine *
+                                            (DisplayInfo.ModeInfo.BitsPerPixel / 8);
+            DisplayInfo.ModeInfo.RefreshRate = 0;
+
+            /* Store pixel format information and frame buffer size */
+            DisplayInfo.ModeInfo.PixelFormat = DisplayInfo.Driver.Gop->Mode->Info->PixelFormat;
+            DisplayInfo.FrameBufferSize = DisplayInfo.Driver.Gop->Mode->FrameBufferSize;
+            break;
+        case UGA:
+            /* Query UGA mode information */
+            Status = DisplayInfo.Driver.Uga->GetMode(DisplayInfo.Driver.Uga, &DisplayInfo.ModeInfo.Width,
+                                                        &DisplayInfo.ModeInfo.Height, &DisplayInfo.ModeInfo.Depth,
+                                                        &DisplayInfo.ModeInfo.RefreshRate);
+            if(Status != STATUS_EFI_SUCCESS)
+            {
+                /* Failed to get UGA mode information, return error */
+                return Status;
+            }
+
+            /* Get pixel bit mask information */
+            PixelBitMask = (EFI_PIXEL_BITMASK){0, 0, 0, 0};
+            GetPixelInformation(&PixelBitMask);
+
+            /* Store UGA framebuffer information */
+            DisplayInfo.ModeInfo.PixelsPerScanLine = DisplayInfo.ModeInfo.Width;
+            DisplayInfo.ModeInfo.Pitch = DisplayInfo.ModeInfo.PixelsPerScanLine *
+                                            (DisplayInfo.ModeInfo.BitsPerPixel / 8);
+
+            /* Store pixel format information and recalculate frame buffer size */
+            DisplayInfo.ModeInfo.PixelFormat = PixelBlueGreenRedReserved8BitPerColor;
+            DisplayInfo.FrameBufferSize = DisplayInfo.ModeInfo.Width *
+                                             DisplayInfo.ModeInfo.Height *
+                                             DisplayInfo.ModeInfo.BytesPerPixel + 1024;
+            break;
+        default:
+            /* This should never be reached as no other display driver is supported */
+            break;
+    }
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/** 
+ * Gets pixel information based on the reported pixel format.
+ *
+ * @param FrameBufferInfo
+ *        Supplies a pointer to the framebuffer information structure.
+ *
+ * @param PixelsBitMask
+ *        Supplies a pointer to the pixel bit mask information provided by EFI graphics protocol.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+FrameBuffer::GetPixelInformation(IN PEFI_PIXEL_BITMASK PixelsBitMask)
+{
+    UINT CompoundMask;
+
+    /* Check reported pixel format */
+    switch(DisplayInfo.ModeInfo.PixelFormat)
+    {
+        case PixelBlueGreenRedReserved8BitPerColor:
+            /* BGRR, 32 bits per pixel */
+            DisplayInfo.ModeInfo.BitsPerPixel = 32;
+            DisplayInfo.ModeInfo.PixelInformation.BlueShift = 0;
+            DisplayInfo.ModeInfo.PixelInformation.BlueSize = 8;
+            DisplayInfo.ModeInfo.PixelInformation.GreenShift = 8;
+            DisplayInfo.ModeInfo.PixelInformation.GreenSize = 8;
+            DisplayInfo.ModeInfo.PixelInformation.RedShift = 16;
+            DisplayInfo.ModeInfo.PixelInformation.RedSize = 8;
+            DisplayInfo.ModeInfo.PixelInformation.ReservedShift = 24;
+            DisplayInfo.ModeInfo.PixelInformation.ReservedSize = 8;
+            break;
+        case PixelRedGreenBlueReserved8BitPerColor:
+            /* RGBR, 32 bits per pixel */
+            DisplayInfo.ModeInfo.BitsPerPixel = 32;
+            DisplayInfo.ModeInfo.PixelInformation.BlueShift = 16;
+            DisplayInfo.ModeInfo.PixelInformation.BlueSize = 8;
+            DisplayInfo.ModeInfo.PixelInformation.GreenShift = 8;
+            DisplayInfo.ModeInfo.PixelInformation.GreenSize = 8;
+            DisplayInfo.ModeInfo.PixelInformation.RedShift = 0;
+            DisplayInfo.ModeInfo.PixelInformation.RedSize = 8;
+            DisplayInfo.ModeInfo.PixelInformation.ReservedShift = 24;
+            DisplayInfo.ModeInfo.PixelInformation.ReservedSize = 8;
+            break;
+        case PixelBitMask:
+            /* Assume 32 bits per pixel */
+            DisplayInfo.ModeInfo.BitsPerPixel = 32;
+
+            /* Calculate compound mask */
+            CompoundMask = PixelsBitMask->RedMask |
+                           PixelsBitMask->GreenMask |
+                           PixelsBitMask->BlueMask |
+                           PixelsBitMask->ReservedMask;
+
+            /* Recalculate bits per pixel */
+            while((CompoundMask & (1 << 31)) == 0)
+            {
+                DisplayInfo.ModeInfo.BitsPerPixel--;
+                CompoundMask <<= 1;
+            }
+
+            /* Set pixel information */
+            GetColorMask(PixelsBitMask->RedMask, &DisplayInfo.ModeInfo.PixelInformation.RedSize,
+                         &DisplayInfo.ModeInfo.PixelInformation.RedShift);
+            GetColorMask(PixelsBitMask->GreenMask, &DisplayInfo.ModeInfo.PixelInformation.GreenSize,
+                         &DisplayInfo.ModeInfo.PixelInformation.GreenShift);
+            GetColorMask(PixelsBitMask->BlueMask, &DisplayInfo.ModeInfo.PixelInformation.BlueSize,
+                         &DisplayInfo.ModeInfo.PixelInformation.BlueShift);
+            GetColorMask(PixelsBitMask->ReservedMask, &DisplayInfo.ModeInfo.PixelInformation.ReservedSize,
+                         &DisplayInfo.ModeInfo.PixelInformation.ReservedShift);
+            break;
+        default:
+            /* Unknown pixel format */
+            DisplayInfo.ModeInfo.BitsPerPixel = 0;
+            DisplayInfo.ModeInfo.PixelInformation.BlueShift = 0;
+            DisplayInfo.ModeInfo.PixelInformation.BlueSize = 0;
+            DisplayInfo.ModeInfo.PixelInformation.GreenShift = 0;
+            DisplayInfo.ModeInfo.PixelInformation.GreenSize = 0;
+            DisplayInfo.ModeInfo.PixelInformation.RedShift = 0;
+            DisplayInfo.ModeInfo.PixelInformation.RedSize = 0;
+            DisplayInfo.ModeInfo.PixelInformation.ReservedShift = 0;
+            DisplayInfo.ModeInfo.PixelInformation.ReservedSize = 0;
+            break;
+    }
+
+    /* Calculate bytes per pixel based on bits per pixel */
+    DisplayInfo.ModeInfo.BytesPerPixel = DisplayInfo.ModeInfo.BitsPerPixel >> 3;
+}
+
+/**
+ * Determines the preferred (native) screen resolution from EDID. This works only with GOP.
+ *
+ * @param PreferredWidth
+ *        Supplies a pointer to the memory area where preferred screen width will be stored.
+ *
+ * @param PreferredHeight
+ *        Supplies a pointer to the memory area where preferred screen height will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+FrameBuffer::GetPreferredScreenResolution(OUT PUINT PreferredWidth,
+                                          OUT PUINT PreferredHeight)
+{
+    EFI_GUID GopGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
+    EFI_GUID EdidGuid = EFI_EDID_ACTIVE_PROTOCOL_GUID;
+    PEFI_EDID_ACTIVE_PROTOCOL ActiveEdid;
+    EFI_STATUS Status;
+
+    /* Check if framebuffer is initialized */
+    if(!DisplayInfo.Initialized)
+    {
+        /* Framebuffer not ready to use EDID protocol */
+        return STATUS_EFI_NOT_READY;
+    }
+
+    /* Check if GOP device driver is used */
+    if(DisplayInfo.Protocol != GOP)
+    {
+        /* Unsupported device driver */
+        return STATUS_EFI_UNSUPPORTED;
+    }
+
+    /* Open EDID protocol */
+    Status = XtLdrProtocol->Protocol.OpenHandle(DisplayInfo.Handle, (PVOID *)&ActiveEdid, &EdidGuid);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open EDID protocol, close GOP protocol and return */
+        XtLdrProtocol->Protocol.Close(&DisplayInfo.Handle, &GopGuid);
+        return Status;
+    }
+
+    /* Return preferred screen resolution */
+    *PreferredWidth = ActiveEdid->Edid[0x38] | ((ActiveEdid->Edid[0x3A] & 0xF0) << 4);
+    *PreferredHeight = ActiveEdid->Edid[0x3B] | ((ActiveEdid->Edid[0x3D] & 0xF0) << 4);
+
+    /* Close EDID & GOP protocols */
+    XtLdrProtocol->Protocol.Close(&DisplayInfo.Handle, &EdidGuid);
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Initializes FrameBuffer device on GOP and UGA compatible adapters.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+FrameBuffer::InitializeDisplay()
+{
+    EFI_GUID GopGuid = EFI_GRAPHICS_OUTPUT_PROTOCOL_GUID;
+    EFI_GUID UgaGuid = EFI_UNIVERSAL_GRAPHICS_ADAPTER_PROTOCOL_GUID;
+    PEFI_GRAPHICS_OUTPUT_MODE_INFORMATION GopModeInfo;
+    UINT Depth, QueryMode, Refresh;
+    UINT_PTR InfoSize;
+    EFI_STATUS Status;
+
+    /* Check if framebuffer already initialized */
+    if(!DisplayInfo.Initialized)
+    {
+        /* Print debug message */
+        XtLdrProtocol->Debug.Print(L"Initializing framebuffer device\n");
+
+        /* Attempt to open EFI GOP protocol */
+        Status = XtLdrProtocol->Protocol.Open(&DisplayInfo.Handle, (PVOID*)&DisplayInfo.Driver.Gop, &GopGuid);
+
+        /* Check if Graphics Output Protocol (GOP) is available */
+        if(Status == STATUS_EFI_SUCCESS)
+        {
+            /* Check if there are any video modes available */
+            if(DisplayInfo.Driver.Gop->Mode->MaxMode == 0)
+            {
+                /* No video modes available */
+                XtLdrProtocol->Debug.Print(L"ERROR: No GOP video mode available\n");
+
+                /* Close GOP protocol and return error */
+                XtLdrProtocol->Protocol.Close(&DisplayInfo.Handle, &GopGuid);
+                return STATUS_EFI_UNSUPPORTED;
+            }
+
+            /* Query current graphics mode */
+            QueryMode = DisplayInfo.Driver.Gop->Mode == NULLPTR ? 0 : DisplayInfo.Driver.Gop->Mode->Mode;
+            Status = DisplayInfo.Driver.Gop->QueryMode(DisplayInfo.Driver.Gop, QueryMode, &InfoSize, &GopModeInfo);
+            if(Status == STATUS_EFI_NOT_STARTED)
+            {
+                /* Set the mode to circumvent buggy UEFI firmware */
+                Status = DisplayInfo.Driver.Gop->SetMode(DisplayInfo.Driver.Gop, 0);
+            }
+            if(Status != STATUS_EFI_SUCCESS)
+            {
+                /* Unable to query GOP modes */
+                XtLdrProtocol->Debug.Print(L"ERROR: Failed to get GOP native mode (Status Code: 0x%zX)\n");
+
+                /* Close GOP protocol and return error */
+                XtLdrProtocol->Protocol.Close(&DisplayInfo.Handle, &GopGuid);
+                return STATUS_EFI_UNSUPPORTED;
+            }
+
+            /* Store frame buffer base address and protocol used */
+            DisplayInfo.FrameBufferBase = DisplayInfo.Driver.Gop->Mode->FrameBufferBase;
+            DisplayInfo.DefaultMode = DisplayInfo.Driver.Gop->Mode->Mode;
+            DisplayInfo.Protocol = GOP;
+
+            /* Get current mode information */
+            Status = GetModeInformation();
+            if(Status != STATUS_EFI_SUCCESS)
+            {
+                /* Unable to get mode information */
+                XtLdrProtocol->Debug.Print(L"ERROR: Failed to get GOP mode information (Status Code: 0x%zX)\n");
+
+                /* Close GOP protocol and return error */
+                XtLdrProtocol->Protocol.Close(&DisplayInfo.Handle, &GopGuid);
+                return STATUS_EFI_UNSUPPORTED;
+            }
+
+            /* Found GOP */
+            XtLdrProtocol->Debug.Print(L"Found EFI-GOP compatible display adapter @ %P (%zu bytes)\n",
+                                       DisplayInfo.FrameBufferBase, DisplayInfo.FrameBufferSize);
+
+            /* Close GOP protocol */
+            Status = XtLdrProtocol->Protocol.Close(&DisplayInfo.Handle, &GopGuid);
+        }
+        else
+        {
+            /* GOP is unavailable, attempt to open UGA protocol */
+            Status = XtLdrProtocol->Protocol.Open(&DisplayInfo.Handle, (PVOID*)&DisplayInfo.Driver.Uga, &UgaGuid);
+
+            /* Check if Universal Graphics Adapter (UGA) is available */
+            if(Status == STATUS_EFI_SUCCESS)
+            {
+                /* Get current video mode */
+                Status = DisplayInfo.Driver.Uga->GetMode(DisplayInfo.Driver.Uga, &DisplayInfo.ModeInfo.Width,
+                                                            &DisplayInfo.ModeInfo.Height, &Depth, &Refresh);
+                if(Status != STATUS_EFI_SUCCESS)
+                {
+                    /* Unable to get current UGA mode */
+                    XtLdrProtocol->Debug.Print(L"ERROR: Failed to get current UGA mode (Status Code: 0x%zX)\n", Status);
+
+                    /* Close UGA protocol and return error */
+                    XtLdrProtocol->Protocol.Close(&DisplayInfo.Handle, &UgaGuid);
+                    return STATUS_EFI_DEVICE_ERROR;
+                }
+
+                /* Find framebuffer address */
+                Status = FindFramebufferAddress(&DisplayInfo.FrameBufferBase);
+                if(Status != STATUS_EFI_SUCCESS)
+                {
+                    /* Unable to find framebuffer address */
+                    XtLdrProtocol->Debug.Print(L"ERROR: Failed to get EFI FB address (Status Code: 0x%zX)\n", Status);
+
+                    /* Close UGA protocol and return error */
+                    XtLdrProtocol->Protocol.Close(&DisplayInfo.Handle, &UgaGuid);
+                    return STATUS_EFI_DEVICE_ERROR;
+                }
+
+                /* Store framebuffer protocol information */
+                DisplayInfo.DefaultMode = 0;
+                DisplayInfo.Protocol = UGA;
+
+                /* Get mode information */
+                Status = GetModeInformation();
+                if(Status != STATUS_EFI_SUCCESS)
+                {
+                    /* Unable to get mode information */
+                    XtLdrProtocol->Debug.Print(L"ERROR: Failed to get UGA mode information (Status Code: 0x%zX)\n");
+                    return STATUS_EFI_UNSUPPORTED;
+                }
+
+                /* Found UGA */
+                XtLdrProtocol->Debug.Print(L"Found EFI-UGA compatible display adapter @ %P (%zu bytes)\n",
+                                           DisplayInfo.FrameBufferBase, DisplayInfo.FrameBufferSize);
+
+                /* Close UGA protocol */
+                XtLdrProtocol->Protocol.Close(&DisplayInfo.Handle, &UgaGuid);
+            }
+        }
+
+        /* Make sure framebuffer initialized properly */
+        if(DisplayInfo.Protocol == NONE)
+        {
+            /* GOP and UGA unavailable */
+            XtLdrProtocol->Debug.Print(L"WARNING: No display adapter found!\n");
+            return STATUS_EFI_NOT_FOUND;
+        }
+
+        XtLdrProtocol->Debug.Print(L"Current screen resolution is %ux%ux%u\n", DisplayInfo.ModeInfo.Width,
+                                   DisplayInfo.ModeInfo.Height, DisplayInfo.ModeInfo.BitsPerPixel);
+
+        /* Set framebuffer initialization flag */
+        DisplayInfo.Initialized = TRUE;
+    }
+
+    /* Return success */
+    return STATUS_SUCCESS;
+}
+
+/**
+ * Initializes FRAMEBUF module by opening XTLDR protocol and installing FRAMEBUF protocol.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+FrameBuffer::InitializeModule(IN EFI_HANDLE ImageHandle,
+                              IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    EFI_GUID Guid = XT_FRAMEBUFFER_PROTOCOL_GUID;
+    EFI_STATUS Status;
+
+    /* Open the XTLDR protocol */
+    Status = BlGetXtLdrProtocol(SystemTable, ImageHandle, &XtLdrProtocol);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open loader protocol */
+        return STATUS_EFI_PROTOCOL_ERROR;
+    }
+
+    /* Set initial framebuffer state */
+    DisplayInfo.Protocol = NONE;
+    DisplayInfo.Initialized = FALSE;
+
+    /* Set routines available via XTLDR framebuffer protocol */
+    FbProtocol.GetDisplayDriver = GetDisplayDriver;
+    FbProtocol.GetDisplayInformation = GetDisplayInformation;
+    FbProtocol.GetPreferredScreenResolution = GetPreferredScreenResolution;
+    FbProtocol.Initialize = InitializeDisplay;
+    FbProtocol.SetScreenResolution = SetScreenResolution;
+
+    /* Register XTOS boot protocol */
+    return XtLdrProtocol->Protocol.Install(&FbProtocol, &Guid);
+}
+
+/**
+ * Sets custom screen resolution, based on the provided width and height.
+ *
+ * @param Width
+ *        Supplies the width of the screen.
+ *
+ * @param Height
+ *        Supplies the height of the screen.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+FrameBuffer::SetScreenResolution(IN UINT Width,
+                                 IN UINT Height)
+{
+    PEFI_GRAPHICS_OUTPUT_MODE_INFORMATION ModeInfo;
+    BOOLEAN ModeChanged;
+    EFI_STATUS Status;
+    UINT_PTR Size;
+    UINT Mode;
+
+    /* Check if framebuffer is initialized */
+    if(!DisplayInfo.Initialized)
+    {
+        /* Framebuffer not ready to change screen mode */
+        return STATUS_EFI_NOT_READY;
+    }
+
+    ModeChanged = FALSE;
+
+    /* Change screen mode depending on display adapter protocol */
+    switch(DisplayInfo.Protocol)
+    {
+        case GOP:
+            /* GOP available, check if user specified screen resolution */
+            if(Width == 0 || Height == 0)
+            {
+                /* No resolution specified, temporarily set lowest supported screen resolution */
+                Status = DisplayInfo.Driver.Gop->SetMode(DisplayInfo.Driver.Gop, 1);
+                if(Status == STATUS_EFI_SUCCESS)
+                {
+                    /* Restore default graphics mode */
+                    Status = DisplayInfo.Driver.Gop->SetMode(DisplayInfo.Driver.Gop, DisplayInfo.DefaultMode);
+                    ModeChanged = (Status == STATUS_EFI_SUCCESS) ? TRUE : FALSE;
+                }
+            }
+            else
+            {
+                /* User specified screen resolution, find a corresponding mode */
+                Mode = 1;
+                while(Mode <= DisplayInfo.Driver.Gop->Mode->MaxMode)
+                {
+                    /* Get mode information */
+                    Status = DisplayInfo.Driver.Gop->QueryMode(DisplayInfo.Driver.Gop, Mode, &Size, &ModeInfo);
+                    if(Status == STATUS_EFI_SUCCESS && Size >= sizeof(*ModeInfo) && ModeInfo != NULLPTR)
+                    {
+                        /* Check if match found */
+                        if(ModeInfo->HorizontalResolution == Width && ModeInfo->VerticalResolution == Height)
+                        {
+                            /* Found corresponding mode, attempt to set it */
+                            Status = DisplayInfo.Driver.Gop->SetMode(DisplayInfo.Driver.Gop, Mode);
+                            if(Status == STATUS_EFI_SUCCESS)
+                            {
+                                /* New mode set correctly, use it */
+                                ModeChanged = TRUE;
+                                break;
+                            }
+                        }
+                    }
+
+                    /* Try with next mode */
+                    Mode++;
+                }
+            }
+            break;
+        case UGA:
+            /* Set UGA screen mode, trying to keep current color depth and refresh rate */
+            Status = DisplayInfo.Driver.Uga->SetMode(DisplayInfo.Driver.Uga, Width, Height,
+                                                        DisplayInfo.ModeInfo.Depth,
+                                                        DisplayInfo.ModeInfo.RefreshRate);
+            if(Status == STATUS_EFI_SUCCESS)
+            {
+                /* New mode set correctly, use it */
+                ModeChanged = TRUE;
+            }
+            break;
+        default:
+            /* This should never be reached */
+            break;
+    }
+
+    if(!ModeChanged)
+    {
+        /* Failed to change screen mode */
+        XtLdrProtocol->Debug.Print(L"ERROR: Failed to change screen mode to %ux%u (Status Code: 0x%zX)\n",
+                                   Width, Height, Status);
+        return STATUS_EFI_UNSUPPORTED;
+    }
+
+    /* Get new screen mode information */
+    Status = GetModeInformation();
+    if(Status == STATUS_EFI_SUCCESS)
+    {
+        XtLdrProtocol->Debug.Print(L"Changed screen resolution to %ux%ux%u\n", DisplayInfo.ModeInfo.Width,
+                                   DisplayInfo.ModeInfo.Height, DisplayInfo.ModeInfo.BitsPerPixel);
+    }
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * This routine is the entry point of the XT EFI boot loader module.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+XtLdrModuleMain(IN EFI_HANDLE ImageHandle,
+                IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    /* Initialize FRAMEBUF module */
+    return FrameBuffer::InitializeModule(ImageHandle, SystemTable);
+}
--- a/boot/xtldr/modules/framebuf/includes/framebuf.hh
+++ b/boot/xtldr/modules/framebuf/includes/framebuf.hh
@@ -0,0 +1,44 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/framebuf/includes/framebuf.hh
+ * DESCRIPTION:     EFI Framebuffer support module header file
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTLDR_MODULES_FRAMEBUF_HH
+#define __XTLDR_MODULES_FRAMEBUF_HH
+
+#include <xtblapi.h>
+
+
+class FrameBuffer
+{
+    private:
+        STATIC XTBL_FRAMEBUFFER_INFORMATION DisplayInfo;
+        STATIC XTBL_FRAMEBUFFER_PROTOCOL FbProtocol;
+        STATIC PXTBL_LOADER_PROTOCOL XtLdrProtocol;
+
+    public:
+        STATIC XTCDECL EFI_STATUS GetDisplayDriver(OUT PEFI_GRAPHICS_PROTOCOL Protocol);
+        STATIC XTCDECL EFI_STATUS GetDisplayInformation(OUT PEFI_PHYSICAL_ADDRESS FrameBufferBase,
+                                                        OUT PULONG_PTR FrameBufferSize,
+                                                        OUT PXTBL_FRAMEBUFFER_MODE_INFORMATION ModeInfo);
+        STATIC XTCDECL EFI_STATUS GetPreferredScreenResolution(OUT PUINT PreferredWidth,
+                                                               OUT PUINT PreferredHeight);
+        STATIC XTCDECL EFI_STATUS InitializeDisplay();
+        STATIC XTCDECL EFI_STATUS InitializeModule(IN EFI_HANDLE ImageHandle,
+                                                   IN PEFI_SYSTEM_TABLE SystemTable);
+        STATIC XTCDECL EFI_STATUS SetScreenResolution(IN UINT Width,
+                                                      IN UINT Height);
+
+    private:
+        STATIC EFI_STATUS FindFramebufferAddress(OUT PEFI_PHYSICAL_ADDRESS Address);
+        STATIC XTCDECL VOID GetColorMask(IN UINT EfiMask,
+                                         OUT PUSHORT ColorSize,
+                                         OUT PUSHORT ColorShift);
+        STATIC XTCDECL EFI_STATUS GetModeInformation();
+        STATIC XTCDECL VOID GetPixelInformation(IN PEFI_PIXEL_BITMASK PixelsBitMask);
+};
+
+#endif /* __XTLDR_MODULES_FRAMEBUF_HH */
--- a/boot/xtldr/modules/pecoff/CMakeLists.txt
+++ b/boot/xtldr/modules/pecoff/CMakeLists.txt
@@ -0,0 +1,27 @@
+# XTLDR PE/COFF image support module
+PROJECT(XTLDR_PECOFF)
+
+# Specify include directories
+include_directories(
+    ${EXECTOS_SOURCE_DIR}/sdk/xtdk
+    ${XTLDR_PECOFF_SOURCE_DIR}/includes)
+
+# Specify list of source code files
+list(APPEND XTLDR_PECOFF_SOURCE
+    ${XTLDR_PECOFF_SOURCE_DIR}/data.cc
+    ${XTLDR_PECOFF_SOURCE_DIR}/pecoff.cc)
+
+# Link module executable
+add_executable(pecoff ${XTLDR_PECOFF_SOURCE})
+
+# Add linker libraries
+target_link_libraries(pecoff libxtldr libxtos)
+
+# Set proper binary name and install target
+set_target_properties(pecoff PROPERTIES SUFFIX .efi)
+set_install_target(pecoff efi/boot/xtldr/modules)
+
+# Set module entrypoint and subsystem
+set_entrypoint(pecoff "XtLdrModuleMain")
+set_linker_map(pecoff TRUE)
+set_subsystem(pecoff efi_boot_service_driver)
--- a/boot/xtldr/modules/pecoff/data.cc
+++ b/boot/xtldr/modules/pecoff/data.cc
@@ -0,0 +1,16 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/pecoff/globals.cc
+ * DESCRIPTION:     Basic PE/COFF executable file format global and static data
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <pecoff.hh>
+
+
+/* XTOS PE/COFF Image Protocol */
+XTBL_EXECUTABLE_IMAGE_PROTOCOL PeCoff::PeProtocol;
+
+/* EFI XT Loader Protocol */
+PXTBL_LOADER_PROTOCOL PeCoff::XtLdrProtocol;
--- a/boot/xtldr/modules/pecoff/includes/pecoff.hh
+++ b/boot/xtldr/modules/pecoff/includes/pecoff.hh
@@ -0,0 +1,53 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/pecoff/includes/pecoff.hh
+ * DESCRIPTION:     Basic PE/COFF executable file format support header
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTLDR_PECOFF_HH
+#define __XTLDR_PECOFF_HH
+
+#include <xtblapi.h>
+
+
+/* PE/COFF module for XTLDR */
+class PeCoff
+{
+    private:
+        STATIC XTBL_EXECUTABLE_IMAGE_PROTOCOL PeProtocol;
+        STATIC PXTBL_LOADER_PROTOCOL XtLdrProtocol;
+
+    public:
+        STATIC XTCDECL EFI_STATUS GetEntryPoint(IN PVOID ImagePointer,
+                                                OUT PVOID *EntryPoint);
+        STATIC XTCDECL EFI_STATUS GetFileSize(IN PVOID ImagePointer,
+                                              OUT PULONGLONG FileSize);
+        STATIC XTCDECL EFI_STATUS GetImageSize(IN PVOID ImagePointer,
+                                               OUT PUINT ImageSize);
+        STATIC XTCDECL EFI_STATUS GetMachineType(IN PVOID ImagePointer,
+                                                 OUT PUSHORT MachineType);
+        STATIC XTCDECL EFI_STATUS GetSection(IN PVOID ImagePointer,
+                                             IN PCHAR SectionName,
+                                             OUT PULONG *RawData);
+        STATIC XTCDECL EFI_STATUS GetSubSystem(IN PVOID ImagePointer,
+                                               OUT PUSHORT SubSystem);
+        STATIC XTCDECL EFI_STATUS GetVersion(IN PVOID ImagePointer,
+                                             OUT PUSHORT Version);
+        STATIC XTCDECL EFI_STATUS InitializeModule(IN EFI_HANDLE ImageHandle,
+                                                   IN PEFI_SYSTEM_TABLE SystemTable);
+        STATIC XTCDECL EFI_STATUS LoadImage(IN PEFI_FILE_HANDLE FileHandle,
+                                            IN LOADER_MEMORY_TYPE MemoryType,
+                                            IN PVOID VirtualAddress,
+                                            OUT PVOID *ImagePointer);
+        STATIC XTCDECL EFI_STATUS RelocateImage(IN PVOID ImagePointer,
+                                                IN EFI_VIRTUAL_ADDRESS Address);
+        STATIC XTCDECL EFI_STATUS UnloadImage(IN PVOID ImagePointer);
+        STATIC XTCDECL EFI_STATUS VerifyImage(IN PVOID ImagePointer);
+
+    private:
+        STATIC XTCDECL EFI_STATUS RelocateLoadedImage(IN PPECOFF_IMAGE_CONTEXT Image);
+};
+
+#endif /* __XTLDR_PECOFF_HH */
--- a/boot/xtldr/modules/pecoff/pecoff.cc
+++ b/boot/xtldr/modules/pecoff/pecoff.cc
@@ -0,0 +1,923 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/pecoff/pecoff.cc
+ * DESCRIPTION:     Basic PE/COFF executable file format support module
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <pecoff.hh>
+
+
+/* PE/COFF_O module information */
+MODULE_AUTHOR(L"Rafal Kupiec <belliash@codingworkshop.eu.org>");
+MODULE_DESCRIPTION(L"Basic PE/COFF executable file format support");
+MODULE_LICENSE(L"GPLv3");
+MODULE_VERSION(L"0.1");
+
+
+/**
+ * Returns the address of the entry point.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @param EntryPoint
+ *        Supplies a pointer to the memory area where address of the image entry point will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::GetEntryPoint(IN PVOID ImagePointer,
+                      OUT PVOID *EntryPoint)
+{
+    PPECOFF_IMAGE_CONTEXT Image;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Validate input data */
+    if(!Image || !Image->PeHeader)
+    {
+        /* Invalid parameter passed */
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Check PE/COFF image type */
+    if(Image->PeHeader->OptionalHeader32.Magic == PECOFF_IMAGE_PE_OPTIONAL_HDR64_MAGIC)
+    {
+        /* Get entry point from 64-bit optional header */
+        *EntryPoint = (PUCHAR)Image->VirtualAddress + Image->PeHeader->OptionalHeader64.AddressOfEntryPoint;
+    }
+    else
+    {
+        /* Get entry point from 32-bit optional header */
+        *EntryPoint = (PUCHAR)Image->VirtualAddress + Image->PeHeader->OptionalHeader32.AddressOfEntryPoint;
+    }
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Returns the size of the loaded PE/COFF file.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @param ImageSize
+ *        Supplies a pointer to the memory area where file size will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::GetFileSize(IN PVOID ImagePointer,
+                    OUT PULONGLONG FileSize)
+{
+    PPECOFF_IMAGE_CONTEXT Image;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Validate input data */
+    if(!Image || !Image->ImageSize)
+    {
+        /* Invalid parameter passed */
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Get image size and return success */
+    *FileSize = Image->FileSize;
+    return STATUS_EFI_NOT_FOUND;
+}
+
+/**
+ * Returns the size of the loaded PE/COFF image.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @param ImageSize
+ *        Supplies a pointer to the memory area where image size will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::GetImageSize(IN PVOID ImagePointer,
+                     OUT PUINT ImageSize)
+{
+    PPECOFF_IMAGE_CONTEXT Image;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Validate input data */
+    if(!Image || !Image->ImageSize)
+    {
+        /* Invalid parameter passed */
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Get image size and return success */
+    *ImageSize = Image->ImageSize;
+    return STATUS_EFI_NOT_FOUND;
+}
+
+/**
+ * Returns the machine type of the PE/COFF image.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @param MachineType
+ *        Supplies a pointer to the memory area where a value defined for the 'machine' field will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::GetMachineType(IN PVOID ImagePointer,
+                       OUT PUSHORT MachineType)
+{
+    PPECOFF_IMAGE_CONTEXT Image;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Validate input data */
+    if(!Image || !Image->PeHeader)
+    {
+        /* Invalid parameter passed */
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Get image machine type and return success */
+    *MachineType = Image->PeHeader->FileHeader.Machine;
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Returns an address to the specified section in the PE/COFF image.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @param SectionName
+ *        Supplies a name of the requested section.
+ *
+ * @param RawData
+ *        Supplies a pointer to the memory area where the address of the requested section will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::GetSection(IN PVOID ImagePointer,
+                   IN PCHAR SectionName,
+                   OUT PULONG *RawData)
+{
+    PPECOFF_IMAGE_SECTION_HEADER SectionHeader;
+    PPECOFF_IMAGE_CONTEXT Image;
+    SIZE_T SectionNameLength;
+    USHORT SectionIndex;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Validate input data */
+    if(!Image || !Image->PeHeader)
+    {
+        /* Invalid parameter passed */
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Check PE/COFF image type */
+    if(Image->PeHeader->OptionalHeader32.Magic == PECOFF_IMAGE_PE_OPTIONAL_HDR64_MAGIC)
+    {
+        /* Find section header in 64-bit optional header */
+        SectionHeader = (PPECOFF_IMAGE_SECTION_HEADER)((PUCHAR)&Image->PeHeader->OptionalHeader64 +
+                                                       Image->PeHeader->FileHeader.SizeOfOptionalHeader);
+    }
+    else
+    {
+        /* Find section header in 32-bit optional header */
+        SectionHeader = (PPECOFF_IMAGE_SECTION_HEADER)((PUCHAR)&Image->PeHeader->OptionalHeader32 +
+                                                       Image->PeHeader->FileHeader.SizeOfOptionalHeader);
+    }
+
+    /* Get section name length */
+    SectionNameLength = XtLdrProtocol->String.Length(SectionName, 0);
+
+    /* Iterate through all image sections */
+    for(SectionIndex = 0; SectionIndex < Image->PeHeader->FileHeader.NumberOfSections; SectionIndex++)
+    {
+        /* Check section name */
+        if(XtLdrProtocol->String.Compare((PCHAR)SectionHeader[SectionIndex].Name, SectionName, SectionNameLength) == 0)
+        {
+            /* Store section address and return */
+            *RawData = (PULONG)((PUCHAR)Image->Data + SectionHeader[SectionIndex].PointerToRawData);
+            return STATUS_EFI_SUCCESS;
+        }
+    }
+
+    /* Section not found if reached here */
+    return STATUS_EFI_NOT_FOUND;
+}
+
+/**
+ * Returns an information about subsystem that is required to run PE/COFF image.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @param SubSystem
+ *        Supplies a pointer to the memory area storing a value defined for the 'subsystem' field of the image.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::GetSubSystem(IN PVOID ImagePointer,
+                     OUT PUSHORT SubSystem)
+{
+    PPECOFF_IMAGE_CONTEXT Image;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Validate input data */
+    if(!Image || !Image->PeHeader)
+    {
+        /* Invalid parameter passed */
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Check PE/COFF image type */
+    if(Image->PeHeader->OptionalHeader32.Magic == PECOFF_IMAGE_PE_OPTIONAL_HDR64_MAGIC)
+    {
+        /* Get image subsystem from 64-bit optional header */
+        *SubSystem = Image->PeHeader->OptionalHeader64.Subsystem;
+    }
+    else
+    {
+        /* Get image subsystem from 32-bit optional header */
+        *SubSystem = Image->PeHeader->OptionalHeader32.Subsystem;
+    }
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Returns an information about major image version.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @param Version
+ *        Supplies a pointer to the memory area storing a major image version.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::GetVersion(IN PVOID ImagePointer,
+                   OUT PUSHORT Version)
+{
+    PPECOFF_IMAGE_CONTEXT Image;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Validate input data */
+    if(!Image || !Image->PeHeader)
+    {
+        /* Invalid parameter passed */
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Check PE/COFF image type */
+    if(Image->PeHeader->OptionalHeader32.Magic == PECOFF_IMAGE_PE_OPTIONAL_HDR64_MAGIC)
+    {
+        /* Get image major version from 64-bit optional header */
+        *Version = Image->PeHeader->OptionalHeader64.MajorImageVersion;
+    }
+    else
+    {
+        /* Get image major version from 32-bit optional header */
+        *Version = Image->PeHeader->OptionalHeader32.MajorImageVersion;
+    }
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Initializes PECOFF module by opening XTLDR protocol and installing PECOFF protocol.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::InitializeModule(IN EFI_HANDLE ImageHandle,
+                         IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    EFI_GUID Guid = XT_PECOFF_IMAGE_PROTOCOL_GUID;
+    EFI_STATUS Status;
+
+    /* Open the XTLDR protocol */
+    Status = BlGetXtLdrProtocol(SystemTable, ImageHandle, &XtLdrProtocol);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open loader protocol */
+        return STATUS_EFI_PROTOCOL_ERROR;
+    }
+
+    /* Set routines available via PE/COFF image protocol */
+    PeProtocol.GetEntryPoint = GetEntryPoint;
+    PeProtocol.GetFileSize = GetFileSize;
+    PeProtocol.GetImageSize = GetImageSize;
+    PeProtocol.GetMachineType = GetMachineType;
+    PeProtocol.GetSection = GetSection;
+    PeProtocol.GetSubSystem = GetSubSystem;
+    PeProtocol.GetVersion = GetVersion;
+    PeProtocol.LoadImage = LoadImage;
+    PeProtocol.RelocateImage = RelocateImage;
+    PeProtocol.UnloadImage = UnloadImage;
+    PeProtocol.VerifyImage = VerifyImage;
+
+    /* Register PE/COFF protocol */
+    return XtLdrProtocol->Protocol.Install(&PeProtocol, &Guid);
+}
+
+/**
+ * Loads a PE/COFF image file.
+ *
+ * @param FileHandle
+ *        The handle of the opened portable executable (PE) file.
+ *
+ * @param MemoryType
+ *        Supplies the type of memory to be assigned to the memory descriptor.
+ *
+ * @param VirtualAddress
+ *        Optional virtual address pointing to the memory area where PE/COFF file will be loaded.
+ *
+ * @param Image
+ *        Supplies pointer to the memory area where loaded PE/COFF image context will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::LoadImage(IN PEFI_FILE_HANDLE FileHandle,
+                  IN LOADER_MEMORY_TYPE MemoryType,
+                  IN PVOID VirtualAddress,
+                  OUT PVOID *ImagePointer)
+{
+    EFI_GUID FileInfoGuid = EFI_FILE_INFO_PROTOCOL_GUID;
+    PPECOFF_IMAGE_SECTION_HEADER SectionHeader;
+    PPECOFF_IMAGE_CONTEXT ImageData;
+    EFI_PHYSICAL_ADDRESS Address;
+    PEFI_FILE_INFO FileInfo;
+    UINT_PTR ReadSize;
+    EFI_STATUS Status;
+    UINT SectionSize;
+    SIZE_T Pages;
+    PUCHAR Data;
+    UINT Index;
+
+    /* Set required size for getting file information */
+    ReadSize = sizeof(EFI_FILE_INFO) + 32;
+
+    /* Allocate necessary amount of memory */
+    Status = XtLdrProtocol->Memory.AllocatePool(ReadSize, (PVOID *)&FileInfo);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Memory allocation failure */
+        XtLdrProtocol->Debug.Print(L"ERROR: Memory allocation failure (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* First attempt to get file information */
+    Status = FileHandle->GetInfo(FileHandle, &FileInfoGuid, &ReadSize, FileInfo);
+    if(Status == STATUS_EFI_BUFFER_TOO_SMALL)
+    {
+        /* Buffer it too small, but EFI tells the required size, let's reallocate */
+        XtLdrProtocol->Memory.FreePool(&FileInfo);
+        Status = XtLdrProtocol->Memory.AllocatePool(ReadSize, (PVOID *)&FileInfo);
+        if(Status != STATUS_EFI_SUCCESS)
+        {
+            /* Memory allocation failure */
+            XtLdrProtocol->Debug.Print(L"ERROR: Memory allocation failure (Status Code: 0x%zX)\n", Status);
+            return Status;
+        }
+
+        /* Second attempt to get file information */
+        Status = FileHandle->GetInfo(FileHandle, &FileInfoGuid, &ReadSize, FileInfo);
+    }
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Unable to get file information */
+        XtLdrProtocol->Debug.Print(L"ERROR: Failed to get PE/COFF file information (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* Allocate memory for storing image data */
+    Status = XtLdrProtocol->Memory.AllocatePool(sizeof(PECOFF_IMAGE_CONTEXT), (PVOID *)&ImageData);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Memory allocation failure */
+        XtLdrProtocol->Debug.Print(L"ERROR: Memory allocation failure (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* Store file size and memory type, nullify data and free up memory */
+    ImageData->Data = NULLPTR;
+    ImageData->FileSize = FileInfo->FileSize;
+    ImageData->MemoryType = MemoryType;
+    XtLdrProtocol->Memory.FreePool(FileInfo);
+
+    /* Calculate number of pages */
+    Pages = EFI_SIZE_TO_PAGES(ImageData->FileSize);
+
+    /* Allocate pages */
+    Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, Pages, &Address);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Pages allocation failure */
+        XtLdrProtocol->Debug.Print(L"ERROR: Pages allocation failure (Status Code: 0x%zX)\n", Status);
+        XtLdrProtocol->Memory.FreePool(ImageData);
+        return Status;
+    }
+
+    /* Read PE/COFF image */
+    ReadSize = Pages * EFI_PAGE_SIZE;
+    Data = (PUCHAR)(UINT_PTR)Address;
+    Status = FileHandle->Read(FileHandle, &ReadSize, Data);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to read data */
+        XtLdrProtocol->Debug.Print(L"ERROR: Failed to read PE/COFF image file (Status Code: 0x%zX)\n", Status);
+        XtLdrProtocol->Memory.FreePages(Pages, (EFI_PHYSICAL_ADDRESS)(UINT_PTR)Data);
+        XtLdrProtocol->Memory.FreePool(ImageData);
+        return Status;
+    }
+
+    /* Extract DOS and PE headers */
+    ImageData->DosHeader = (PPECOFF_IMAGE_DOS_HEADER)Data;
+    ImageData->PeHeader = (PPECOFF_IMAGE_PE_HEADER)((PUCHAR)Data + ImageData->DosHeader->PeHeaderOffset);
+
+    /* Validate headers */
+    Status = PeCoff::VerifyImage(ImageData);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Header validation failed, probably broken or invalid PE/COFF image */
+        XtLdrProtocol->Debug.Print(L"ERROR: Invalid PE/COFF image headers (Status Code: 0x%zX)\n", Status);
+        XtLdrProtocol->Memory.FreePages(Pages, (EFI_PHYSICAL_ADDRESS)(UINT_PTR)Data);
+        XtLdrProtocol->Memory.FreePool(ImageData);
+        return Status;
+    }
+
+    /* Make sure image is executable */
+    if (!(ImageData->PeHeader->FileHeader.Characteristics & PECOFF_IMAGE_FILE_EXECUTABLE_IMAGE))
+    {
+        /* Loaded image is not executable */
+        XtLdrProtocol->Debug.Print(L"ERROR: Non-executable PE/COFF image loaded\n");
+        XtLdrProtocol->Memory.FreePages(Pages, (EFI_PHYSICAL_ADDRESS)(UINT_PTR)Data);
+        XtLdrProtocol->Memory.FreePool(ImageData);
+        return STATUS_EFI_LOAD_ERROR;
+    }
+
+    /* Store image size depending on the PE/COFF image type */
+    if(ImageData->PeHeader->OptionalHeader32.Magic == PECOFF_IMAGE_PE_OPTIONAL_HDR64_MAGIC)
+    {
+        /* Store 64-bit image size */
+        ImageData->ImageSize = ImageData->PeHeader->OptionalHeader64.SizeOfImage;
+    }
+    else
+    {
+        /* Store 32-bit image size */
+        ImageData->ImageSize = ImageData->PeHeader->OptionalHeader32.SizeOfImage;
+    }
+
+    /* Calculate number of image pages */
+    ImageData->ImagePages = EFI_SIZE_TO_PAGES(ImageData->ImageSize);
+
+    /* Allocate image pages */
+    Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, ImageData->ImagePages, &Address);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Pages reallocation failure */
+        XtLdrProtocol->Debug.Print(L"ERROR: Pages reallocation failure (Status Code: 0x%zX)\n", Status);
+        XtLdrProtocol->Memory.FreePool(ImageData);
+        return Status;
+    }
+
+    /* Store image data and virtual address */
+    ImageData->Data = (PUCHAR)(UINT_PTR)Address;
+    ImageData->PhysicalAddress = (PVOID)(UINT_PTR)Address;
+    if(VirtualAddress)
+    {
+        /* Virtual address passed to this routine */
+        ImageData->VirtualAddress = VirtualAddress;
+    }
+    else
+    {
+        /* Virtual address not specified, use physical address */
+        ImageData->VirtualAddress = (PVOID)(UINT_PTR)Address;
+    }
+
+    /* Check the PE/COFF image type */
+    if(ImageData->PeHeader->OptionalHeader32.Magic == PECOFF_IMAGE_PE_OPTIONAL_HDR64_MAGIC)
+    {
+        /* Copy all PE32+ sections */
+        XtLdrProtocol->Memory.CopyMemory(ImageData->Data, Data, ImageData->PeHeader->OptionalHeader64.SizeOfHeaders);
+
+        /* Find PE32+ section header */
+        SectionHeader = (PPECOFF_IMAGE_SECTION_HEADER)((PUCHAR)&ImageData->PeHeader->OptionalHeader64 +
+                                                       ImageData->PeHeader->FileHeader.SizeOfOptionalHeader);
+    }
+    else
+    {
+        /* Copy all PE32 sections */
+        XtLdrProtocol->Memory.CopyMemory(ImageData->Data, Data, ImageData->PeHeader->OptionalHeader64.SizeOfHeaders);
+
+        /* Find PE32 section header */
+        SectionHeader = (PPECOFF_IMAGE_SECTION_HEADER)((PUCHAR)&ImageData->PeHeader->OptionalHeader64 +
+                                                       ImageData->PeHeader->FileHeader.SizeOfOptionalHeader);
+    }
+
+    /* Load each section into memory */
+    for(Index = 0; Index < ImageData->PeHeader->FileHeader.NumberOfSections; Index++)
+    {
+        /* Check section raw data size and section virtual size */
+        if(SectionHeader[Index].SizeOfRawData < SectionHeader[Index].Misc.VirtualSize)
+        {
+            /* Use raw data size if it is smaller than virtual size */
+            SectionSize = SectionHeader[Index].SizeOfRawData;
+        }
+        else
+        {
+            /* User virtual size otherwise */
+            SectionSize = SectionHeader[Index].Misc.VirtualSize;
+        }
+
+        /* Make sure section is available */
+        if(SectionSize > 0 && SectionHeader[Index].PointerToRawData != 0)
+        {
+            /* Copy section */
+            XtLdrProtocol->Memory.CopyMemory((PUCHAR)ImageData->Data + SectionHeader[Index].VirtualAddress,
+                                             Data + SectionHeader[Index].PointerToRawData, SectionSize);
+        }
+
+        /* Check if raw size is shorter than virtual size */
+        if(SectionSize < SectionHeader[Index].Misc.VirtualSize)
+        {
+            /* Fill remaining space with zeroes */
+            XtLdrProtocol->Memory.ZeroMemory((PUCHAR)ImageData->Data + SectionHeader[Index].VirtualAddress + SectionSize,
+                                             SectionHeader[Index].Misc.VirtualSize - SectionSize);
+        }
+    }
+
+    /* Free pages */
+    XtLdrProtocol->Memory.FreePages((EFI_PHYSICAL_ADDRESS)(UINT_PTR)Data, Pages);
+
+    /* Perform relocation fixups */
+    Status = PeCoff::RelocateLoadedImage(ImageData);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to relocate image */
+        XtLdrProtocol->Debug.Print(L"ERROR: PE/COFF image relocation failed (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* Store image data */
+    *ImagePointer = ImageData;
+
+    /* Return SUCCESS */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Relocates PE/COFF image to the specified address.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @param Address
+ *        Specifies destination address of memory region, where image should be relocated.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::RelocateImage(IN PVOID ImagePointer,
+                      IN EFI_VIRTUAL_ADDRESS Address)
+{
+    PPECOFF_IMAGE_CONTEXT Image;
+    ULONGLONG ImageBase, OldVirtualAddress;
+    EFI_STATUS Status;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Store original virtual address */
+    OldVirtualAddress = (UINT_PTR)Image->VirtualAddress;
+
+    /* Check PE/COFF image type */
+    if(Image->PeHeader->OptionalHeader32.Magic == PECOFF_IMAGE_PE_OPTIONAL_HDR64_MAGIC)
+    {
+        /* This is 64-bit PE32+, store its image base address */
+        ImageBase = Image->PeHeader->OptionalHeader64.ImageBase;
+    }
+    else
+    {
+        /* This is 32-bit PE32, store its image base address */
+        ImageBase = Image->PeHeader->OptionalHeader32.ImageBase;
+    }
+
+    /* Overwrite virtual address and relocate image once again */
+    Image->VirtualAddress = (PVOID)(Address - OldVirtualAddress + ImageBase);
+    Status = PeCoff::RelocateLoadedImage(Image);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Relocation failed */
+        return Status;
+    }
+
+    /* Store new image virtual address */
+    Image->VirtualAddress = (PVOID)Address;
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Relocates a loaded PE/COFF image.
+ *
+ * @param Image
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::RelocateLoadedImage(IN PPECOFF_IMAGE_CONTEXT Image)
+{
+    PPECOFF_IMAGE_BASE_RELOCATION RelocationDir, RelocationEnd;
+    PPECOFF_IMAGE_DATA_DIRECTORY DataDirectory;
+    USHORT Offset, Type, Count;
+    PUSHORT TypeOffset;
+    ULONGLONG ImageBase;
+    PUINT Address;
+    PULONGLONG LongPtr;
+    PUINT ShortPtr;
+
+    /* Make sure image is not stripped */
+    if(Image->PeHeader->FileHeader.Characteristics & PECOFF_IMAGE_FILE_RELOCS_STRIPPED)
+    {
+        /* No relocation information found */
+        XtLdrProtocol->Debug.Print(L"WARNING: PE/COFF image is stripped and contains no information about relocations\n");
+        return STATUS_EFI_SUCCESS;
+    }
+
+    /* Check PE/COFF image type */
+    if(Image->PeHeader->OptionalHeader32.Magic == PECOFF_IMAGE_PE_OPTIONAL_HDR64_MAGIC)
+    {
+        /* Set relocation data directory and image base address */
+        DataDirectory = &Image->PeHeader->OptionalHeader64.DataDirectory[PECOFF_IMAGE_DIRECTORY_ENTRY_BASERELOC];
+        ImageBase = Image->PeHeader->OptionalHeader64.ImageBase;
+
+        /* Check if loaded 64-bit PE32+ image should be relocated */
+        if(Image->PeHeader->OptionalHeader64.NumberOfRvaAndSizes <= PECOFF_IMAGE_DIRECTORY_ENTRY_BASERELOC ||
+        DataDirectory->VirtualAddress == 0 || DataDirectory->Size < sizeof(PECOFF_IMAGE_BASE_RELOCATION))
+        {
+            /* No need to relocate the image */
+            return STATUS_EFI_SUCCESS;
+        }
+    }
+    else
+    {
+        /* Check if loaded 32-bit PE32 image should be relocated */
+        /* Set relocation data directory and image base address */
+        DataDirectory = &Image->PeHeader->OptionalHeader32.DataDirectory[PECOFF_IMAGE_DIRECTORY_ENTRY_BASERELOC];
+        ImageBase = Image->PeHeader->OptionalHeader32.ImageBase;
+
+        if(Image->PeHeader->OptionalHeader32.NumberOfRvaAndSizes <= PECOFF_IMAGE_DIRECTORY_ENTRY_BASERELOC ||
+        DataDirectory->VirtualAddress == 0 || DataDirectory->Size < sizeof(PECOFF_IMAGE_BASE_RELOCATION))
+        {
+            /* No need to relocate the image */
+            return STATUS_EFI_SUCCESS;
+        }
+    }
+
+    /* Set relocation pointers */
+    RelocationDir = (PPECOFF_IMAGE_BASE_RELOCATION)((ULONG_PTR)Image->Data + DataDirectory->VirtualAddress);
+    RelocationEnd = (PPECOFF_IMAGE_BASE_RELOCATION)((ULONG_PTR)RelocationDir + DataDirectory->Size);
+
+    /* Do relocations */
+    while(RelocationDir < RelocationEnd && RelocationDir->SizeOfBlock > 0)
+    {
+        /* Calculate number of relocations needed, address and type offset */
+        Count = (RelocationDir->SizeOfBlock - sizeof(PECOFF_IMAGE_BASE_RELOCATION)) / sizeof(USHORT);
+        Address = (PUINT)((PUCHAR)Image->Data + RelocationDir->VirtualAddress);
+        TypeOffset = (PUSHORT)((PUCHAR)RelocationDir + sizeof(PECOFF_IMAGE_BASE_RELOCATION));
+
+        /* Do relocations */
+        while(Count--)
+        {
+            /* Calculate offset and relocation type */
+            Offset = *TypeOffset & 0xFFF;
+            Type = *TypeOffset >> 12;
+
+            /* Check if end of the loaded address reached */
+            if((PVOID)(PUSHORT)(Address + Offset) >= (PUCHAR)Image->Data + Image->ImageSize)
+            {
+                /* Do not relocate after the end of loaded image */
+                break;
+            }
+
+            /* Make sure we are not going to relocate into .reloc section */
+            if((ULONG_PTR)(Address + Offset) < (ULONG_PTR)RelocationDir ||
+               (ULONG_PTR)(Address + Offset) >= (ULONG_PTR)RelocationEnd)
+            {
+                /* Apply relocation fixup */
+                switch (Type)
+                {
+                    case PECOFF_IMAGE_REL_BASED_ABSOLUTE:
+                        /* No relocation required */
+                        break;
+                    case PECOFF_IMAGE_REL_BASED_DIR64:
+                        /* 64-bit relocation */
+                        LongPtr = (PULONGLONG)((PUCHAR)Address + Offset);
+                        *LongPtr = *LongPtr - ImageBase + (UINT_PTR)Image->VirtualAddress;
+                        break;
+                    case PECOFF_IMAGE_REL_BASED_HIGHLOW:
+                        /* 32-bit relocation of hight and low half of address */
+                        ShortPtr = (PUINT)((PUCHAR)Address + Offset);
+                        *ShortPtr = *ShortPtr - ImageBase + (UINT_PTR)Image->VirtualAddress;
+                        break;
+                    default:
+                        /* Unknown or unsupported relocation type */
+                        return STATUS_EFI_UNSUPPORTED;
+                }
+            }
+            /* Increment the type offset */
+            TypeOffset++;
+        }
+
+        /* Next relocation */
+        RelocationDir = (PPECOFF_IMAGE_BASE_RELOCATION)((PUCHAR)RelocationDir + RelocationDir->SizeOfBlock);
+    }
+
+    /* Return SUCCESS */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Unloads a PE/COFF image file and frees allocated memory.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::UnloadImage(IN PVOID ImagePointer)
+{
+    PPECOFF_IMAGE_CONTEXT Image;
+    EFI_STATUS Status;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Validate input data */
+    if(!Image || !Image->Data)
+    {
+        /* Invalid parameter passed */
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Free memory allocated for the image */
+    Status = XtLdrProtocol->Memory.FreePages(Image->ImagePages, (EFI_PHYSICAL_ADDRESS)(UINT_PTR)Image->Data);
+    Status |= XtLdrProtocol->Memory.FreePool(Image);
+
+    /* Return status */
+    return Status;
+}
+
+/**
+ * Validates a PE/COFF image headers.
+ *
+ * @param ImagePointer
+ *        Supplies a pointer to the PE/COFF context structure representing the loaded image.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+PeCoff::VerifyImage(IN PVOID ImagePointer)
+{
+    PPECOFF_IMAGE_CONTEXT Image;
+
+    /* Get PE/COFF image pointer*/
+    Image = (PPECOFF_IMAGE_CONTEXT)ImagePointer;
+
+    /* Validate input data */
+    if(!Image || !Image->PeHeader)
+    {
+        /* Invalid parameter passed */
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Validate file size */
+    if(Image->FileSize < sizeof(PECOFF_IMAGE_DOS_HEADER))
+    {
+        /* PE/COFF image shorter than DOS header, return error*/
+        return STATUS_EFI_END_OF_FILE;
+    }
+
+    /* Validate DOS header */
+    if(Image->DosHeader->Magic != PECOFF_IMAGE_DOS_SIGNATURE)
+    {
+        /* Invalid DOS signature, return error */
+        return STATUS_EFI_INCOMPATIBLE_VERSION;
+    }
+
+    /* Validate PE header */
+    if(Image->PeHeader->Signature != PECOFF_IMAGE_NT_SIGNATURE &&
+       Image->PeHeader->Signature != PECOFF_IMAGE_XT_SIGNATURE)
+    {
+        /* Invalid PE signature, return error */
+        return STATUS_EFI_INCOMPATIBLE_VERSION;
+    }
+
+    /* Validate optional header */
+    if(Image->PeHeader->OptionalHeader32.Magic != PECOFF_IMAGE_PE_OPTIONAL_HDR32_MAGIC &&
+       Image->PeHeader->OptionalHeader64.Magic != PECOFF_IMAGE_PE_OPTIONAL_HDR64_MAGIC)
+    {
+        /* Invalid optional header signature, return error */
+        return STATUS_EFI_INCOMPATIBLE_VERSION;
+    }
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * This routine is the entry point of the XT EFI boot loader module.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+XtLdrModuleMain(IN EFI_HANDLE ImageHandle,
+                IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    /* Initialize PECOFF module */
+    return PeCoff::InitializeModule(ImageHandle, SystemTable);
+}
--- a/boot/xtldr/modules/xtos_o/CMakeLists.txt
+++ b/boot/xtldr/modules/xtos_o/CMakeLists.txt
@@ -0,0 +1,28 @@
+# XT Boot Loader
+PROJECT(XTLDR_XTOS_O)
+
+# Specify include directories
+include_directories(
+    ${EXECTOS_SOURCE_DIR}/sdk/xtdk
+    ${XTLDR_XTOS_O_SOURCE_DIR}/includes)
+
+# Specify list of source code files
+list(APPEND XTLDR_XTOS_O_SOURCE
+    ${XTLDR_XTOS_O_SOURCE_DIR}/${ARCH}/memory.cc
+    ${XTLDR_XTOS_O_SOURCE_DIR}/data.cc
+    ${XTLDR_XTOS_O_SOURCE_DIR}/xtos.cc)
+
+# Link bootloader executable
+add_executable(xtos_o ${XTLDR_XTOS_O_SOURCE})
+
+# Add linker libraries
+target_link_libraries(xtos_o libxtos libxtldr)
+
+# Set proper binary name and install target
+set_target_properties(xtos_o PROPERTIES SUFFIX .efi)
+set_install_target(xtos_o efi/boot/xtldr/modules)
+
+# Set module entrypoint and subsystem
+set_entrypoint(xtos_o "XtLdrModuleMain")
+set_linker_map(xtos_o TRUE)
+set_subsystem(xtos_o efi_boot_service_driver)
--- a/boot/xtldr/modules/xtos_o/amd64/memory.cc
+++ b/boot/xtldr/modules/xtos_o/amd64/memory.cc
@@ -0,0 +1,298 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/amd64/memory.cc
+ * DESCRIPTION:     EFI memory management for AMD64 target
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ *                  Aiken Harris <harraiken91@gmail.com>
+ */
+
+#include <xtos.hh>
+
+
+/**
+ * Determines the appropriate paging level (PML) for the AMD64 architecture.
+ *
+ * @param Parameters
+ *        A pointer to the wide character string containing the kernel boot parameters.
+ *
+ * @return This routine returns the appropriate page map level (5 if LA57 is enabled, 4 otherwise).
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+ULONG
+Xtos::DeterminePagingLevel(IN CONST PWCHAR Parameters)
+{
+    CPUID_REGISTERS CpuRegisters;
+
+    /* Prepare CPUID registers to query for STD7 features */
+    XtLdrProtocol->Memory.ZeroMemory(&CpuRegisters, sizeof(CPUID_REGISTERS));
+    CpuRegisters.Leaf = CPUID_GET_VENDOR_STRING;
+
+    /* Query CPUID */
+    XtLdrProtocol->Cpu.CpuId(&CpuRegisters);
+
+    /* Verify if the CPU supports the STD7 feature leaf (0x00000007) */
+    if(CpuRegisters.Eax >= CPUID_GET_STANDARD7_FEATURES)
+    {
+        /* Prepare CPUID registers to query for LA57 support */
+        XtLdrProtocol->Memory.ZeroMemory(&CpuRegisters, sizeof(CPUID_REGISTERS));
+        CpuRegisters.Leaf = CPUID_GET_STANDARD7_FEATURES;
+
+        /* Query CPUID */
+        XtLdrProtocol->Cpu.CpuId(&CpuRegisters);
+
+        /* Check if eXtended Physical Addressing (XPA) is enabled and if LA57 is supported by the CPU */
+        if((CpuRegisters.Ecx & CPUID_FEATURES_ECX_LA57) &&
+           !(XtLdrProtocol->BootUtils.GetBooleanParameter(Parameters, L"NOXPA")))
+        {
+            /* Enable LA57 (PML5) */
+            return 5;
+        }
+    }
+
+    /* Disable LA57 and use PML4 by default */
+    return 4;
+}
+
+/**
+ * Builds the actual memory mapping page table and enables paging. This routine exits EFI boot services as well.
+ *
+ * @param PageMap
+ *        Supplies a pointer to the page mapping structure.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Xtos::EnablePaging(IN PXTBL_PAGE_MAPPING PageMap)
+{
+    EFI_STATUS Status;
+    EFI_PHYSICAL_ADDRESS TrampolineAddress;
+    PXT_TRAMPOLINE_ENTRY TrampolineEntry;
+    ULONG_PTR TrampolineSize;
+    PVOID TrampolineCode;
+
+    /* Build page map */
+    Status = XtLdrProtocol->Memory.BuildPageMap(PageMap, (PageMap->PageMapLevel > 4) ? MM_P5E_LA57_BASE : MM_PXE_BASE);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to build page map */
+        XtLdrProtocol->Debug.Print(L"Failed to build page map (Status code: %zX)\n", Status);
+        return Status;
+    }
+
+    /* Map memory for hardware layer */
+    Status = MapHardwareMemoryPool(PageMap);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to map memory for hardware layer */
+        XtLdrProtocol->Debug.Print(L"Failed to map memory for hardware leyer (Status code: %zX)\n", Status);
+        return Status;
+    }
+
+    /* Check the configured page map level to set the LA57 state accordingly */
+    if(PageMap->PageMapLevel == 5)
+    {
+        /* Get the trampoline code information */
+        XtLdrProtocol->BootUtils.GetTrampolineInformation(TrampolineEnableXpa, &TrampolineCode, &TrampolineSize);
+        if(TrampolineCode == NULLPTR || TrampolineSize == 0)
+        {
+            /* Failed to get trampoline information */
+            XtLdrProtocol->Debug.Print(L"Failed to get trampoline information\n");
+            return STATUS_EFI_INVALID_PARAMETER;
+        }
+
+        /* Set the address of the trampoline code below 1MB */
+        TrampolineAddress = MM_TRAMPOLINE_ADDRESS;
+
+        /* Allocate pages for the trampoline */
+        Status = XtLdrProtocol->Memory.AllocatePages(AllocateAddress, EFI_SIZE_TO_PAGES(TrampolineSize), &TrampolineAddress);
+        if(Status != STATUS_EFI_SUCCESS)
+        {
+            /* Failed to allocate memory for trampoline code */
+            XtLdrProtocol->Debug.Print(L"Failed to allocate memory for trampoline code (Status code: %zX)\n", Status);
+            return Status;
+        }
+
+        /* Set the trampoline entry point and copy its code into the allocated buffer */
+        TrampolineEntry = (PXT_TRAMPOLINE_ENTRY)(UINT_PTR)TrampolineAddress;
+        XtLdrProtocol->Memory.CopyMemory((PVOID)TrampolineEntry, TrampolineCode, TrampolineSize);
+    }
+
+    /* Exit EFI Boot Services */
+    XtLdrProtocol->Debug.Print(L"Exiting EFI boot services\n");
+    Status = XtLdrProtocol->Utils.ExitBootServices();
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to exit boot services */
+        XtLdrProtocol->Debug.Print(L"Failed to exit boot services (Status code: %zX)\n", Status);
+        return STATUS_EFI_ABORTED;
+    }
+
+    /* Check the configured page map level to set the LA57 state accordingly */
+    if(PageMap->PageMapLevel == 5)
+    {
+        /* Enable Linear Address 57-bit (LA57) extension */
+        XtLdrProtocol->Debug.Print(L"Enabling Linear Address 57-bit (LA57)\n");
+
+        /* Execute the trampoline to enable LA57 and write PML5 to CR3 */
+        TrampolineEntry((UINT64)PageMap->PtePointer);
+    }
+    else
+    {
+        /* Disable Linear Address 57-bit (LA57) extension */
+        XtLdrProtocol->Debug.Print(L"Disabling Linear Address 57-bit (LA57)\n");
+
+        /* Write PML4 to CR3 and enable paging */
+        XtLdrProtocol->Cpu.WriteControlRegister(3, (UINT_PTR)PageMap->PtePointer);
+        XtLdrProtocol->Cpu.WriteControlRegister(0, XtLdrProtocol->Cpu.ReadControlRegister(0) | CR0_PG);
+    }
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Maps the page table for hardware layer addess space.
+ *
+ * @param PageMap
+ *        Supplies a pointer to the page mapping structure.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Xtos::MapHardwareMemoryPool(IN PXTBL_PAGE_MAPPING PageMap)
+{
+    PHARDWARE_PTE P5eBase, PdeBase, PpeBase, PxeBase;
+    EFI_PHYSICAL_ADDRESS Address;
+    EFI_STATUS Status;
+
+    if(PageMap->PageMapLevel == 5)
+    {
+        /* Get P5E (PML5) base address */
+        P5eBase = (PHARDWARE_PTE)PageMap->PtePointer;
+
+        /* Check if P5E entry already exists */
+        if(!P5eBase[(MM_HARDWARE_VA_START >> MM_P5I_SHIFT) & 0x1FF].Valid)
+        {
+            /* No valid P5E, allocate memory */
+            Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, 1, &Address);
+            if(Status != STATUS_EFI_SUCCESS)
+            {
+                /* Memory allocation failure, return error */
+                return Status;
+            }
+
+            /* Zero fill memory used by P5E */
+            XtLdrProtocol->Memory.ZeroMemory((PVOID)Address, EFI_PAGE_SIZE);
+
+            /* Make P5E valid */
+            P5eBase[(MM_HARDWARE_VA_START >> MM_P5I_SHIFT) & 0x1FF].Valid = 1;
+            P5eBase[(MM_HARDWARE_VA_START >> MM_P5I_SHIFT) & 0x1FF].PageFrameNumber = Address / EFI_PAGE_SIZE;
+            P5eBase[(MM_HARDWARE_VA_START >> MM_P5I_SHIFT) & 0x1FF].Writable = 1;
+
+            /* Set PXE base address */
+            PxeBase = (PHARDWARE_PTE)(UINT_PTR)Address;
+        }
+        else
+        {
+            /* Set PXE base address based on existing P5E */
+            PxeBase = (PHARDWARE_PTE)((P5eBase[(MM_HARDWARE_VA_START >> MM_P5I_SHIFT) & 0x1FF].PageFrameNumber) << EFI_PAGE_SHIFT);
+        }
+    }
+    else
+    {
+        /* Get PXE (PML4) base address */
+        PxeBase = (PHARDWARE_PTE)PageMap->PtePointer;
+    }
+
+    /* Check if PXE entry already exists */
+    if(!PxeBase[(MM_HARDWARE_VA_START >> MM_PXI_SHIFT) & 0x1FF].Valid)
+    {
+        /* No valid PXE, allocate memory */
+        Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, 1, &Address);
+        if(Status != STATUS_EFI_SUCCESS)
+        {
+            /* Memory allocation failure, return error */
+            return Status;
+        }
+
+        /* Zero fill memory used by PXE */
+        XtLdrProtocol->Memory.ZeroMemory((PVOID)Address, EFI_PAGE_SIZE);
+
+        /* Make PXE valid */
+        PxeBase[(MM_HARDWARE_VA_START >> MM_PXI_SHIFT) & 0x1FF].Valid = 1;
+        PxeBase[(MM_HARDWARE_VA_START >> MM_PXI_SHIFT) & 0x1FF].PageFrameNumber = Address / EFI_PAGE_SIZE;
+        PxeBase[(MM_HARDWARE_VA_START >> MM_PXI_SHIFT) & 0x1FF].Writable = 1;
+
+        /* Set PPE base address */
+        PpeBase = (PHARDWARE_PTE)(UINT_PTR)Address;
+    }
+    else
+    {
+        /* Set PPE base address based on existing PXE */
+        PpeBase = (PHARDWARE_PTE)((PxeBase[(MM_HARDWARE_VA_START >> MM_PXI_SHIFT) & 0x1FF].PageFrameNumber) << EFI_PAGE_SHIFT);
+    }
+
+    /* Check if PPE entry already exists */
+    if(!PpeBase[(MM_HARDWARE_VA_START >> MM_PPI_SHIFT) & 0x1FF].Valid)
+    {
+        /* No valid PPE, allocate memory */
+        Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, 1, &Address);
+        if(Status != STATUS_EFI_SUCCESS)
+        {
+            /* Memory allocation failure, return error */
+            return Status;
+        }
+
+        /* Zero fill memory used by PPE */
+        XtLdrProtocol->Memory.ZeroMemory((PVOID)Address, EFI_PAGE_SIZE);
+
+        /* Make PPE valid */
+        PpeBase[(MM_HARDWARE_VA_START >> MM_PPI_SHIFT) & 0x1FF].Valid = 1;
+        PpeBase[(MM_HARDWARE_VA_START >> MM_PPI_SHIFT) & 0x1FF].PageFrameNumber = Address / EFI_PAGE_SIZE;
+        PpeBase[(MM_HARDWARE_VA_START >> MM_PPI_SHIFT) & 0x1FF].Writable = 1;
+
+        /* Set PDE base address */
+        PdeBase = (PHARDWARE_PTE)Address;
+    }
+    else
+    {
+        /* Set PDE base address, based on existing PPE */
+        PdeBase = (PHARDWARE_PTE)((PpeBase[(MM_HARDWARE_VA_START >> MM_PPI_SHIFT) & 0x1FF].PageFrameNumber) << EFI_PAGE_SHIFT);
+    }
+
+    /* Loop through 2 PDE entries */
+    for(UINT Index = 0 ; Index < 2 ; Index++)
+    {
+        /* Check if PDE entry already exists */
+        if(!PdeBase[((MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF) + Index].Valid)
+        {
+            /* No valid PDE, allocate memory */
+            Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, 1, &Address);
+            if(Status != STATUS_EFI_SUCCESS)
+            {
+                /* Memory allocation failure, return error */
+                return Status;
+            }
+
+            /* Zero fill memory used by PDE */
+            XtLdrProtocol->Memory.ZeroMemory((PVOID)Address, EFI_PAGE_SIZE);
+
+            /* Make PDE valid */
+            PdeBase[((MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF) + Index].Valid = 1;
+            PdeBase[((MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF) + Index].PageFrameNumber = Address / EFI_PAGE_SIZE;
+            PdeBase[((MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF) + Index].Writable = 1;
+        }
+    }
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
--- a/boot/xtldr/modules/xtos_o/data.cc
+++ b/boot/xtldr/modules/xtos_o/data.cc
@@ -0,0 +1,19 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/xtos/data.cc
+ * DESCRIPTION:     XTOS module global and static data
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.hh>
+
+
+/* XTOS Boot Protocol */
+XTBL_BOOT_PROTOCOL Xtos::BootProtocol;
+
+/* XTOS PE/COFF Image Protocol */
+PXTBL_EXECUTABLE_IMAGE_PROTOCOL Xtos::PeCoffProtocol;
+
+/* EFI XT Loader Protocol */
+PXTBL_LOADER_PROTOCOL Xtos::XtLdrProtocol;
--- a/boot/xtldr/modules/xtos_o/i686/memory.cc
+++ b/boot/xtldr/modules/xtos_o/i686/memory.cc
@@ -0,0 +1,181 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/i686/memory.cc
+ * DESCRIPTION:     EFI memory management for i686 target
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.hh>
+
+
+/**
+ * Determines the appropriate paging level (PML) for the i686 architecture.
+ *
+ * @param Parameters
+ *        A pointer to the wide character string containing the kernel boot parameters.
+ *
+ * @return This routine returns the appropriate page map level (3 if PAE is enabled, 2 otherwise).
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+ULONG
+Xtos::DeterminePagingLevel(IN CONST PWCHAR Parameters)
+{
+    CPUID_REGISTERS CpuRegisters;
+
+    /* Prepare CPUID registers to query for PAE support */
+    XtLdrProtocol->Memory.ZeroMemory(&CpuRegisters, sizeof(CPUID_REGISTERS));
+    CpuRegisters.Leaf = CPUID_GET_STANDARD1_FEATURES;
+
+    /* Query CPUID */
+    XtLdrProtocol->Cpu.CpuId(&CpuRegisters);
+
+    /* Check if eXtended Physical Addressing (XPA) is enabled and if PAE is supported by the CPU */
+    if((CpuRegisters.Edx & CPUID_FEATURES_EDX_PAE) &&
+       !(XtLdrProtocol->BootUtils.GetBooleanParameter(Parameters, L"NOXPA")))
+    {
+        /* Enable PAE (PML3) */
+        return 3;
+    }
+
+    /* Disable PAE and use PML2 by default */
+    return 2;
+}
+
+/**
+ * Builds the actual memory mapping page table and enables paging. This routine exits EFI boot services as well.
+ *
+ * @param PageMap
+ *        Supplies a pointer to the page mapping structure.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Xtos::EnablePaging(IN PXTBL_PAGE_MAPPING PageMap)
+{
+    EFI_STATUS Status;
+
+    /* Build page map */
+    Status = XtLdrProtocol->Memory.BuildPageMap(PageMap, MM_PTE_BASE);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to build page map */
+        XtLdrProtocol->Debug.Print(L"Failed to build page map (Status code: %zX)\n", Status);
+        return Status;
+    }
+
+    /* Map memory for hardware layer */
+    Status = MapHardwareMemoryPool(PageMap);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to map memory for hardware layer */
+        XtLdrProtocol->Debug.Print(L"Failed to map memory for hardware layer (Status code: %zX)\n", Status);
+        return Status;
+    }
+
+    /* Exit EFI Boot Services */
+    XtLdrProtocol->Debug.Print(L"Exiting EFI boot services\n");
+    Status = XtLdrProtocol->Utils.ExitBootServices();
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to exit boot services */
+        XtLdrProtocol->Debug.Print(L"Failed to exit boot services (Status code: %zX)\n", Status);
+        return STATUS_EFI_ABORTED;
+    }
+
+    /* Disable paging */
+    XtLdrProtocol->Cpu.WriteControlRegister(0, XtLdrProtocol->Cpu.ReadControlRegister(0) & ~CR0_PG);
+
+    /* Check the configured page map level to set the PAE state accordingly */
+    if(PageMap->PageMapLevel == 3)
+    {
+        /* Enable Physical Address Extension (PAE) */
+        XtLdrProtocol->Debug.Print(L"Enabling Physical Address Extension (PAE)\n");
+        XtLdrProtocol->Cpu.WriteControlRegister(4, XtLdrProtocol->Cpu.ReadControlRegister(4) | CR4_PAE);
+    }
+    else
+    {
+        /* Disable Physical Address Extension (PAE) */
+        XtLdrProtocol->Debug.Print(L"Disabling Physical Address Extension (PAE)\n");
+        XtLdrProtocol->Cpu.WriteControlRegister(4, XtLdrProtocol->Cpu.ReadControlRegister(4) & ~CR4_PAE);
+    }
+
+    /* Write page mappings to CR3 */
+    XtLdrProtocol->Cpu.WriteControlRegister(3, (UINT_PTR)PageMap->PtePointer);
+
+    /* Enable paging */
+    XtLdrProtocol->Cpu.WriteControlRegister(0, XtLdrProtocol->Cpu.ReadControlRegister(0) | CR0_PG);
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Maps the page table for hardware layer addess space.
+ *
+ * @param PageMap
+ *        Supplies a pointer to the page mapping structure.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Xtos::MapHardwareMemoryPool(IN PXTBL_PAGE_MAPPING PageMap)
+{
+    EFI_PHYSICAL_ADDRESS Address;
+    PHARDWARE_LEGACY_PTE LegacyPdeBase;
+    PHARDWARE_MODERN_PTE PdeBase;
+    EFI_STATUS Status;
+
+    /* Allocate memory */
+    Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, 1, &Address);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Memory allocation failure, return error */
+        return Status;
+    }
+
+    /* Zero fill allocated memory */
+    XtLdrProtocol->Memory.ZeroMemory((PVOID)Address, EFI_PAGE_SIZE);
+
+    /* Check if PAE is enabled (3-level paging) */
+    if(PageMap->PageMapLevel == 3)
+    {
+        /* Get PDE base address (PAE enabled) */
+        PdeBase = (PHARDWARE_MODERN_PTE)(((PHARDWARE_MODERN_PTE)PageMap->PtePointer)[MM_HARDWARE_VA_START >> MM_PPI_SHIFT].PageFrameNumber << MM_PAGE_SHIFT);
+
+        /* Make PDE valid */
+        XtLdrProtocol->Memory.ZeroMemory(&PdeBase[(MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF], sizeof(HARDWARE_MODERN_PTE));
+        PdeBase[(MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF].PageFrameNumber = Address >> MM_PAGE_SHIFT;
+        PdeBase[(MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF].Valid = 1;
+        PdeBase[(MM_HARDWARE_VA_START >> MM_PDI_SHIFT) & 0x1FF].Writable = 1;
+    }
+    else
+    {
+        /* Get PDE base address (PAE disabled) */
+        LegacyPdeBase = (PHARDWARE_LEGACY_PTE)PageMap->PtePointer;
+
+        /* Check for a conflicting PDE */
+        if(LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT].Valid)
+        {
+            /* PDE already exists and is valid, nothing to do */
+            return STATUS_EFI_SUCCESS;
+        }
+
+        /* Make PDE valid  */
+        XtLdrProtocol->Memory.ZeroMemory(&LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT], sizeof(HARDWARE_LEGACY_PTE));
+        LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT].Valid = 1;
+        LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT].PageFrameNumber = Address >> MM_PAGE_SHIFT;
+        LegacyPdeBase[MM_HARDWARE_VA_START >> MM_PDI_LEGACY_SHIFT].Writable = 1;
+    }
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
--- a/boot/xtldr/modules/xtos_o/includes/xtos.hh
+++ b/boot/xtldr/modules/xtos_o/includes/xtos.hh
@@ -0,0 +1,78 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/xtos/includes/xtos.hh
+ * DESCRIPTION:     XTOS boot protocol support header
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTLDR_MODULES_XTOS_HH
+#define __XTLDR_MODULES_XTOS_HH
+
+#include <xtblapi.h>
+
+
+/* XTOS kernel entry point */
+typedef VOID (XTAPI *PXT_ENTRY_POINT)(IN PKERNEL_INITIALIZATION_BLOCK BootParameters);
+
+/* XTOS trampoline entry point */
+typedef VOID (*PXT_TRAMPOLINE_ENTRY)(UINT64 PageMap);
+
+
+/* XTOS module for XTLDR */
+class Xtos
+{
+    private:
+        STATIC XTBL_BOOT_PROTOCOL BootProtocol;
+        STATIC PXTBL_EXECUTABLE_IMAGE_PROTOCOL PeCoffProtocol;
+        STATIC PXTBL_LOADER_PROTOCOL XtLdrProtocol;
+
+    public:
+        STATIC XTCDECL EFI_STATUS BootSystem(IN PXTBL_BOOT_PARAMETERS Parameters);
+        STATIC XTCDECL EFI_STATUS InitializeModule(IN EFI_HANDLE ImageHandle,
+                                                   IN PEFI_SYSTEM_TABLE SystemTable);
+
+    private:
+        STATIC XTCDECL EFI_STATUS AddVirtualMemoryMapping(IN PLIST_ENTRY MemoryMappings,
+                                                          IN PVOID VirtualAddress,
+                                                          IN PVOID PhysicalAddress,
+                                                          IN UINT NumberOfPages,
+                                                          IN LOADER_MEMORY_TYPE MemoryType);
+        STATIC XTCDECL LOADER_MEMORY_TYPE ConvertEfiMemoryType(IN EFI_MEMORY_TYPE EfiMemoryType);
+        STATIC XTCDECL ULONG DeterminePagingLevel(IN CONST PWCHAR Parameters);
+        STATIC XTCDECL EFI_STATUS EnablePaging(IN PXTBL_PAGE_MAPPING PageMap);
+        STATIC XTCDECL VOID GetDisplayInformation(OUT PSYSTEM_RESOURCE_FRAMEBUFFER FrameBufferResource,
+                                                  IN PEFI_PHYSICAL_ADDRESS FrameBufferBase,
+                                                  IN PULONG_PTR FrameBufferSize,
+                                                  IN PXTBL_FRAMEBUFFER_MODE_INFORMATION FrameBufferModeInfo);
+        STATIC XTCDECL EFI_STATUS GetMemoryDescriptorList(IN PXTBL_PAGE_MAPPING PageMap,
+                                                          IN PVOID *VirtualAddress,
+                                                          OUT PLIST_ENTRY MemoryDescriptorList);
+        STATIC XTCDECL EFI_STATUS GetSystemResourcesList(IN PXTBL_PAGE_MAPPING PageMap,
+                                                         IN PVOID *VirtualAddress,
+                                                         OUT PLIST_ENTRY SystemResourcesList);
+        STATIC XTCDECL EFI_STATUS GetVirtualAddress(IN PLIST_ENTRY MemoryMappings,
+                                                    IN PVOID PhysicalAddress,
+                                                    OUT PVOID *VirtualAddress);
+        STATIC XTCDECL EFI_STATUS InitializeApicBase(IN PXTBL_PAGE_MAPPING PageMap);
+        STATIC XTCDECL EFI_STATUS InitializeLoaderBlock(IN PXTBL_PAGE_MAPPING PageMap,
+                                                        IN PVOID *VirtualAddress,
+                                                        IN PXTBL_BOOT_PARAMETERS Parameters);
+        STATIC XTCDECL EFI_STATUS InitializeVirtualMemory(IN OUT PLIST_ENTRY MemoryMappings,
+                                                          IN OUT PVOID *MemoryMapAddress);
+        STATIC XTCDECL EFI_STATUS LoadModule(IN PEFI_FILE_HANDLE BootDir,
+                                             IN PWCHAR FileName,
+                                             IN PVOID VirtualAddress,
+                                             IN LOADER_MEMORY_TYPE MemoryType,
+                                             OUT PPECOFF_IMAGE_CONTEXT *ImageContext);
+        STATIC XTCDECL EFI_STATUS MapHardwareMemoryPool(IN PXTBL_PAGE_MAPPING PageMap);
+        STATIC XTCDECL EFI_STATUS MapVirtualMemory(IN PLIST_ENTRY MemoryMappings,
+                                                   IN UINT_PTR VirtualAddress,
+                                                   IN UINT_PTR PhysicalAddress,
+                                                   IN UINT NumberOfPages,
+                                                   IN OUT PVOID *PtePointer);
+        STATIC XTCDECL EFI_STATUS RunBootSequence(IN PEFI_FILE_HANDLE BootDir,
+                                                  IN PXTBL_BOOT_PARAMETERS Parameters);
+};
+
+#endif /* __XTLDR_MODULES_XTOS_HH */
--- a/boot/xtldr/modules/xtos_o/xtos.cc
+++ b/boot/xtldr/modules/xtos_o/xtos.cc
@@ -0,0 +1,729 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/modules/xtos/xtos.cc
+ * DESCRIPTION:     XTOS boot protocol support
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.hh>
+
+
+/* XTOS module information */
+MODULE_AUTHOR(L"Rafal Kupiec <belliash@codingworkshop.eu.org>");
+MODULE_DESCRIPTION(L"XTOS boot protocol support");
+MODULE_DEPENDENCY(L"acpi framebuf pecoff");
+MODULE_LICENSE(L"GPLv3");
+MODULE_VERSION(L"0.1");
+
+
+/**
+ * Starts the operating system according to the provided parameters using XTOS boot protocol.
+ *
+ * @param Parameters
+ *        Input parameters with detailed system configuration like boot device or kernel path.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Xtos::BootSystem(IN PXTBL_BOOT_PARAMETERS Parameters)
+{
+    EFI_GUID PeCoffProtocolGuid = XT_PECOFF_IMAGE_PROTOCOL_GUID;
+    EFI_HANDLE DiskHandle, ProtocolHandle;
+    PEFI_FILE_HANDLE FsHandle, BootDir;
+    PWCHAR SystemPath;
+    EFI_STATUS Status;
+
+    /* Print debug message */
+    XtLdrProtocol->Debug.Print(L"XTOS boot protocol activated\n");
+
+    /* Open the XT PE/COFF protocol */
+    Status = XtLdrProtocol->Protocol.Open(&ProtocolHandle, (PVOID *)&PeCoffProtocol, &PeCoffProtocolGuid);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open loader protocol */
+        XtLdrProtocol->Debug.Print(L"ERROR: Unable to load PE/COFF image protocol\n");
+        return STATUS_EFI_PROTOCOL_ERROR;
+    }
+
+    /* Check device path */
+    if(Parameters->DevicePath == NULLPTR)
+    {
+        /* No device path set */
+        XtLdrProtocol->Debug.Print(L"ERROR: No device path provided, unable to boot system\n");
+        return STATUS_EFI_INVALID_PARAMETER;
+    }
+
+    /* Check if system path is set */
+    if(Parameters->SystemPath != NULLPTR)
+    {
+        /* Make sure system path begins with backslash, the only separator supported by EFI */
+        if(Parameters->SystemPath[0] == '/')
+        {
+            /* Replace directory separator if needed */
+            Parameters->SystemPath[0] = '\\';
+        }
+
+        /* Validate system path */
+        SystemPath = &Parameters->SystemPath[1];
+        while(*SystemPath)
+        {
+            /* Make sure it does not point to any subdirectory and not contains special characters */
+            if(((*SystemPath | 32) - 'a' >= 26) && ((*SystemPath - '0') >= 10))
+            {
+                /* Invalid path specified */
+                XtLdrProtocol->Debug.Print(L"ERROR: System path does not point to the valid XTOS installation\n");
+                return STATUS_EFI_INVALID_PARAMETER;
+            }
+            /* Check next character in the path */
+            SystemPath++;
+        }
+    }
+    else
+    {
+        /* Fallback to '/ExectOS' by default */
+        XtLdrProtocol->Debug.Print(L"WARNING: No system path set, falling back to defaults\n");
+        Parameters->SystemPath = (PWCHAR)L"\\ExectOS";
+    }
+
+    /* Check if kernel file is set */
+    if(Parameters->KernelFile == NULLPTR)
+    {
+        /* No kernel filename set, fallback to default */
+        XtLdrProtocol->Debug.Print(L"WARNING: No kernel file specified, falling back to defaults\n");
+        Parameters->KernelFile = (PWCHAR)L"xtoskrnl.exe";
+    }
+
+    /* Check if provided any kernel boot arguments */
+    if(Parameters->Parameters == NULLPTR)
+    {
+        /* No argument supplied */
+        Parameters->Parameters = (PWCHAR)L"";
+    }
+
+    /* Print a debug message */
+    XtLdrProtocol->Debug.Print(L"[XTOS] ARC Path: %S\n"
+                               L"[XTOS] System Path: %S\n"
+                               L"[XTOS] Kernel File: %S\n"
+                               L"[XTOS] Boot Arguments: %S\n",
+                               Parameters->ArcName, Parameters->SystemPath,
+                               Parameters->KernelFile, Parameters->Parameters);
+
+    /* Open EFI volume */
+    Status = XtLdrProtocol->Disk.OpenVolume(Parameters->DevicePath, &DiskHandle, &FsHandle);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open a volume */
+        XtLdrProtocol->Debug.Print(L"ERROR: Unable to open boot volume\n");
+        return Status;
+    }
+
+    /* System path has to point to the boot directory */
+    XtLdrProtocol->WideString.Concatenate(Parameters->SystemPath, (PWCHAR)L"\\Boot", 0);
+
+    /* Open XTOS system boot directory */
+    Status = FsHandle->Open(FsHandle, &BootDir, Parameters->SystemPath, EFI_FILE_MODE_READ, 0);
+    FsHandle->Close(FsHandle);
+
+    /* Check if system path directory opened successfully */
+    if(Status == STATUS_EFI_NOT_FOUND)
+    {
+        /* Directory not found, nothing to load */
+        XtLdrProtocol->Debug.Print(L"ERROR: System boot directory not found\n");
+
+        /* Close volume */
+        XtLdrProtocol->Disk.CloseVolume(&DiskHandle);
+        return Status;
+    }
+    else if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open directory */
+        XtLdrProtocol->Debug.Print(L"ERROR: Unable to open system boot directory\n");
+        XtLdrProtocol->Disk.CloseVolume(&DiskHandle);
+        return Status;
+    }
+
+    /* Start boot sequence */
+    return RunBootSequence(BootDir, Parameters);
+}
+
+/**
+ * Returns information about frame buffer in XTOS compatible format.
+ *
+ * @param InformationBlock
+ *        A pointer to memory area containing XT structure where all the information will be stored.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+VOID
+Xtos::GetDisplayInformation(OUT PSYSTEM_RESOURCE_FRAMEBUFFER FrameBufferResource,
+                            IN PEFI_PHYSICAL_ADDRESS FrameBufferBase,
+                            IN PULONG_PTR FrameBufferSize,
+                            IN PXTBL_FRAMEBUFFER_MODE_INFORMATION FrameBufferModeInfo)
+{
+    /* Fill in frame buffer resource */
+    FrameBufferResource->Header.PhysicalAddress = (PVOID)*FrameBufferBase;
+    FrameBufferResource->Header.ResourceType = SystemResourceFrameBuffer;
+    FrameBufferResource->Header.ResourceSize = sizeof(SYSTEM_RESOURCE_FRAMEBUFFER);
+    FrameBufferResource->BufferSize = *FrameBufferSize;
+    FrameBufferResource->Width = FrameBufferModeInfo->Width;
+    FrameBufferResource->Height = FrameBufferModeInfo->Height;
+    FrameBufferResource->Depth = FrameBufferModeInfo->Depth;
+    FrameBufferResource->BitsPerPixel = FrameBufferModeInfo->BitsPerPixel;
+    FrameBufferResource->PixelsPerScanLine = FrameBufferModeInfo->PixelsPerScanLine;
+    FrameBufferResource->Pitch = FrameBufferModeInfo->Pitch;
+    FrameBufferResource->Pixels.BlueShift = FrameBufferModeInfo->PixelInformation.BlueShift;
+    FrameBufferResource->Pixels.BlueSize = FrameBufferModeInfo->PixelInformation.BlueSize;
+    FrameBufferResource->Pixels.GreenShift = FrameBufferModeInfo->PixelInformation.GreenShift;
+    FrameBufferResource->Pixels.GreenSize = FrameBufferModeInfo->PixelInformation.GreenSize;
+    FrameBufferResource->Pixels.RedShift = FrameBufferModeInfo->PixelInformation.RedShift;
+    FrameBufferResource->Pixels.RedSize = FrameBufferModeInfo->PixelInformation.RedSize;
+    FrameBufferResource->Pixels.ReservedShift = FrameBufferModeInfo->PixelInformation.ReservedShift;
+    FrameBufferResource->Pixels.ReservedSize = FrameBufferModeInfo->PixelInformation.ReservedSize;
+}
+
+XTCDECL
+EFI_STATUS
+Xtos::GetMemoryDescriptorList(IN PXTBL_PAGE_MAPPING PageMap,
+                              IN PVOID *VirtualAddress,
+                              OUT PLIST_ENTRY MemoryDescriptorList)
+{
+    EFI_PHYSICAL_ADDRESS Address;
+    EFI_STATUS Status;
+    ULONGLONG Pages;
+
+    Pages = (ULONGLONG)EFI_SIZE_TO_PAGES((PageMap->MapSize + 1) * sizeof(LOADER_MEMORY_DESCRIPTOR));
+
+    Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, Pages, &Address);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        return Status;
+    }
+
+    Status = XtLdrProtocol->Memory.MapVirtualMemory(PageMap, *VirtualAddress, (PVOID)Address, Pages, LoaderMemoryData);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        XtLdrProtocol->Memory.FreePages(Address, Pages);
+        return Status;
+    }
+
+    PVOID PhysicalBase = (PVOID)Address;
+
+    PLIST_ENTRY ListEntry;
+    ListEntry = PageMap->MemoryMap.Flink;
+    while(ListEntry != &PageMap->MemoryMap)
+    {
+        PXTBL_MEMORY_MAPPING MemoryMapping = CONTAIN_RECORD(ListEntry, XTBL_MEMORY_MAPPING, ListEntry);
+        PLOADER_MEMORY_DESCRIPTOR MemoryDescriptor = (PLOADER_MEMORY_DESCRIPTOR)Address;
+
+        MemoryDescriptor->MemoryType = MemoryMapping->MemoryType;
+        MemoryDescriptor->BasePage = (UINT_PTR)MemoryMapping->PhysicalAddress / EFI_PAGE_SIZE;
+        MemoryDescriptor->PageCount = MemoryMapping->NumberOfPages;
+
+        XtLdrProtocol->LinkedList.InsertTail(MemoryDescriptorList, &MemoryDescriptor->ListEntry);
+
+        Address = Address + sizeof(LOADER_MEMORY_DESCRIPTOR);
+        ListEntry = ListEntry->Flink;
+    }
+
+    XtLdrProtocol->Memory.PhysicalListToVirtual(PageMap, MemoryDescriptorList, PhysicalBase, *VirtualAddress);
+
+    return STATUS_EFI_SUCCESS;
+}
+
+XTCDECL
+EFI_STATUS
+Xtos::GetSystemResourcesList(IN PXTBL_PAGE_MAPPING PageMap,
+                             IN PVOID *VirtualAddress,
+                             OUT PLIST_ENTRY SystemResourcesList)
+{
+    XTSTATUS Status;
+    EFI_HANDLE ProtocolHandle;
+    EFI_GUID AcpiGuid = XT_ACPI_PROTOCOL_GUID;
+    EFI_GUID FrameBufGuid = XT_FRAMEBUFFER_PROTOCOL_GUID;
+    PXTBL_ACPI_PROTOCOL AcpiProtocol;
+    PXTBL_FRAMEBUFFER_PROTOCOL FrameBufProtocol;
+    XTBL_FRAMEBUFFER_MODE_INFORMATION FbModeInfo;
+    EFI_PHYSICAL_ADDRESS FbAddress;
+    ULONG_PTR FbSize;
+    UINT FrameBufferPages;
+    PSYSTEM_RESOURCE_FRAMEBUFFER FrameBufferResource;
+    PSYSTEM_RESOURCE_ACPI AcpiResource;
+    ULONGLONG Pages;
+    EFI_PHYSICAL_ADDRESS Address;
+    PVOID PhysicalBase, VirtualBase;
+
+    Pages = (ULONGLONG)EFI_SIZE_TO_PAGES(sizeof(SYSTEM_RESOURCE_ACPI) + sizeof(SYSTEM_RESOURCE_FRAMEBUFFER));
+
+    Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, Pages, &Address);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        return Status;
+    }
+    Status = XtLdrProtocol->Memory.MapVirtualMemory(PageMap, *VirtualAddress, (PVOID)Address, Pages, LoaderFirmwarePermanent);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        XtLdrProtocol->Memory.FreePages(Address, Pages);
+        return Status;
+    }
+
+    PhysicalBase = (PVOID)Address;
+    VirtualBase = *VirtualAddress;
+
+    /* Calculate next valid virtual address */
+    *VirtualAddress = (PUINT8)*VirtualAddress + (Pages * EFI_PAGE_SIZE);
+
+    AcpiResource = (PSYSTEM_RESOURCE_ACPI)Address;
+
+    XtLdrProtocol->Memory.ZeroMemory(AcpiResource, sizeof(SYSTEM_RESOURCE_ACPI));
+
+    /* Load FrameBuffer protocol */
+    Status = XtLdrProtocol->Protocol.Open(&ProtocolHandle, (PVOID*)&AcpiProtocol, &AcpiGuid);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        return Status;
+    }
+
+    AcpiResource->Header.ResourceType = SystemResourceAcpi;
+    AcpiResource->Header.ResourceSize = sizeof(SYSTEM_RESOURCE_ACPI);
+
+    /* Get APIC and XSDP/RSDP addresses */
+    AcpiProtocol->GetApicBase(&AcpiResource->ApicBase);
+    AcpiProtocol->GetAcpiDescriptionPointer(&AcpiResource->Header.PhysicalAddress);
+
+    /* No need to map ACPI */
+    AcpiResource->Header.VirtualAddress = 0;
+
+    XtLdrProtocol->LinkedList.InsertTail(SystemResourcesList, &AcpiResource->Header.ListEntry);
+
+    /* Close FrameBuffer protocol */
+    XtLdrProtocol->Protocol.Close(&ProtocolHandle, &FrameBufGuid);
+
+    Address = Address + sizeof(SYSTEM_RESOURCE_ACPI);
+
+    FrameBufferResource = (PSYSTEM_RESOURCE_FRAMEBUFFER)Address;
+
+    XtLdrProtocol->Memory.ZeroMemory(FrameBufferResource, sizeof(SYSTEM_RESOURCE_FRAMEBUFFER));
+
+    /* Load FrameBuffer protocol */
+    Status = XtLdrProtocol->Protocol.Open(&ProtocolHandle, (PVOID*)&FrameBufProtocol, &FrameBufGuid);
+    if(Status == STATUS_EFI_SUCCESS)
+    {
+        /* Get FrameBuffer information */
+        Status = FrameBufProtocol->GetDisplayInformation(&FbAddress, &FbSize, &FbModeInfo);
+        if(Status == STATUS_EFI_SUCCESS)
+        {
+
+            /* Store information about FrameBuffer device */
+            GetDisplayInformation(FrameBufferResource, &FbAddress, &FbSize, &FbModeInfo);
+        }
+    }
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        return Status;
+    }
+
+    /* Calculate pages needed to map framebuffer */
+    FrameBufferPages = EFI_SIZE_TO_PAGES(FbSize);
+
+    /* Rewrite framebuffer address by using virtual address */
+    FrameBufferResource->Header.VirtualAddress = *VirtualAddress;
+
+    /* Map frame buffer memory */
+    XtLdrProtocol->Memory.MapVirtualMemory(PageMap, FrameBufferResource->Header.VirtualAddress,
+                                           FrameBufferResource->Header.PhysicalAddress,
+                                           FrameBufferPages, LoaderFirmwarePermanent);
+
+    /* Close FrameBuffer protocol */
+    XtLdrProtocol->Protocol.Close(&ProtocolHandle, &FrameBufGuid);
+
+    *VirtualAddress = (PUINT8)*VirtualAddress + (FrameBufferPages * EFI_PAGE_SIZE);
+
+    XtLdrProtocol->LinkedList.InsertTail(SystemResourcesList, &FrameBufferResource->Header.ListEntry);
+
+    XtLdrProtocol->Memory.PhysicalListToVirtual(PageMap, SystemResourcesList, PhysicalBase, VirtualBase);
+
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Checks if APIC is present in the system and finds its base address.
+ *
+ * @param MemoryMappings
+ *        Supplies a pointer to linked list containing all memory mappings.
+ *
+ * @return This routine returns an EFI status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Xtos::InitializeApicBase(IN PXTBL_PAGE_MAPPING PageMap)
+{
+    EFI_GUID AcpiGuid = XT_ACPI_PROTOCOL_GUID;
+    PXTBL_ACPI_PROTOCOL AcpiProtocol;
+    EFI_HANDLE ProtocolHandle;
+    PVOID ApicBaseAddress;
+    EFI_STATUS Status;
+
+    /* Open ACPI protocol */
+    Status = XtLdrProtocol->Protocol.Open(&ProtocolHandle, (PVOID*)&AcpiProtocol, &AcpiGuid);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* ACPI protocol not found */
+        return Status;
+    }
+
+    /* Get APIC base address */
+    Status = AcpiProtocol->GetApicBase(&ApicBaseAddress);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to get APIC base address */
+        return Status;
+    }
+
+    /* Map APIC base address */
+    XtLdrProtocol->Memory.MapVirtualMemory(PageMap, (PVOID)APIC_BASE, ApicBaseAddress, 1, LoaderFirmwarePermanent);
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * Initializes and maps the kernel initialization block.
+ *
+ * @param MemoryMappings
+ *        Supplies a pointer to linked list containing all memory mappings.
+ *
+ * @param VirtualAddress
+ *        Supplies a pointer to the next valid, free and available virtual address.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Xtos::InitializeLoaderBlock(IN PXTBL_PAGE_MAPPING PageMap,
+                            IN PVOID *VirtualAddress,
+                            IN PXTBL_BOOT_PARAMETERS Parameters)
+{
+    PKERNEL_INITIALIZATION_BLOCK LoaderBlock;
+    EFI_PHYSICAL_ADDRESS Address;
+    EFI_STATUS Status;
+    UINT BlockPages;
+    UINT ParametersSize;
+
+    /* Calculate size of parameters */
+    ParametersSize = (XtLdrProtocol->WideString.Length(Parameters->Parameters, 0) + 1) * sizeof(WCHAR);
+
+    /* Calculate number of pages needed for initialization block */
+    BlockPages = EFI_SIZE_TO_PAGES(sizeof(KERNEL_INITIALIZATION_BLOCK) + ParametersSize);
+
+    /* Allocate memory for kernel initialization block */
+    Status = XtLdrProtocol->Memory.AllocatePages(AllocateAnyPages, BlockPages, &Address);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Memory allocation failure */
+        return Status;
+    }
+
+    /* Initialize and zero-fill kernel initialization block */
+    LoaderBlock = (PKERNEL_INITIALIZATION_BLOCK)(UINT_PTR)Address;
+    XtLdrProtocol->Memory.ZeroMemory(LoaderBlock, sizeof(KERNEL_INITIALIZATION_BLOCK) + ParametersSize);
+
+    /* Set basic loader block properties */
+    LoaderBlock->BlockSize = sizeof(KERNEL_INITIALIZATION_BLOCK);
+    LoaderBlock->BlockVersion = INITIALIZATION_BLOCK_VERSION;
+    LoaderBlock->ProtocolVersion = BOOT_PROTOCOL_VERSION;
+
+    /* Set LoaderInformation block properties */
+    LoaderBlock->LoaderInformation.DbgPrint = (PVOID)XtLdrProtocol->Debug.Print;
+
+    /* Set FirmwareInformation block properties */
+    LoaderBlock->FirmwareInformation.FirmwareType = SystemFirmwareEfi;
+    // LoaderBlock->FirmwareInformation.EfiFirmware.EfiVersion = EfiSystemTable->Hdr.Revision;
+    LoaderBlock->FirmwareInformation.EfiFirmware.EfiRuntimeServices = NULLPTR;
+
+    /* Copy parameters to kernel initialization block */
+    LoaderBlock->KernelParameters = (PWCHAR)((UINT_PTR)*VirtualAddress + sizeof(KERNEL_INITIALIZATION_BLOCK));
+    XtLdrProtocol->Memory.CopyMemory((PVOID)((UINT_PTR)LoaderBlock + sizeof(KERNEL_INITIALIZATION_BLOCK)),
+                  Parameters->Parameters,
+                  ParametersSize);
+
+    /* Map kernel initialization block */
+    XtLdrProtocol->Memory.MapVirtualMemory(PageMap, *VirtualAddress, (PVOID)LoaderBlock,
+                                           BlockPages, LoaderSystemBlock);
+
+    /* Calculate next valid virtual address */
+    *VirtualAddress = (PUINT8)*VirtualAddress + (BlockPages * EFI_PAGE_SIZE);
+
+    XtLdrProtocol->LinkedList.InitializeHead(&LoaderBlock->SystemResourcesListHead);
+    GetSystemResourcesList(PageMap, VirtualAddress, &LoaderBlock->SystemResourcesListHead);
+
+    /* Initialize memory descriptor list */
+    XtLdrProtocol->LinkedList.InitializeHead(&LoaderBlock->MemoryDescriptorListHead);
+    GetMemoryDescriptorList(PageMap, VirtualAddress, &LoaderBlock->MemoryDescriptorListHead);
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+XTCDECL
+EFI_STATUS
+Xtos::InitializeModule(IN EFI_HANDLE ImageHandle,
+                       IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    EFI_GUID Guid = XT_XTOS_BOOT_PROTOCOL_GUID;
+    EFI_STATUS Status;
+
+    /* Open the XTLDR protocol */
+    Status = BlGetXtLdrProtocol(SystemTable, ImageHandle, &XtLdrProtocol);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to open loader protocol */
+        return STATUS_EFI_PROTOCOL_ERROR;
+    }
+
+    /* Set routines available via XTOS boot protocol */
+    BootProtocol.BootSystem = Xtos::BootSystem;
+
+    /* Register XTOS boot protocol */
+    XtLdrProtocol->Boot.RegisterProtocol(L"XTOS", &Guid);
+
+    /* Install XTOS protocol */
+    return XtLdrProtocol->Protocol.Install(&BootProtocol, &Guid);
+}
+
+/**
+ * Loads XTOS PE/COFF module.
+ *
+ * @param SystemDir
+ *        An EFI handle to the opened system directory containing a module that will be loaded.
+ *
+ * @param FileName
+ *        An on disk filename of the module that will be loaded.
+ *
+ * @param VirtualAddress
+ *        Optional virtual address pointing to the memory area where PE/COFF file will be loaded.
+ *
+ * @param MemoryType
+ *        Supplies the type of memory to be assigned to the memory descriptor.
+ *
+ * @param ImageContext
+ *        Supplies pointer to the memory area where loaded PE/COFF image context will be stored.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Xtos::LoadModule(IN PEFI_FILE_HANDLE SystemDir,
+                 IN PWCHAR FileName,
+                 IN PVOID VirtualAddress,
+                 IN LOADER_MEMORY_TYPE MemoryType,
+                 OUT PPECOFF_IMAGE_CONTEXT *ImageContext)
+{
+    PEFI_FILE_HANDLE ModuleHandle;
+    USHORT MachineType, SubSystem;
+    EFI_STATUS Status;
+
+    /* Print debug message */
+    XtLdrProtocol->Debug.Print(L"Loading %S ... \n", FileName);
+
+    /* Open module file */
+    Status = SystemDir->Open(SystemDir, &ModuleHandle, FileName, EFI_FILE_MODE_READ, 0);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Unable to open the file */
+        XtLdrProtocol->Debug.Print(L"ERROR: Failed to open '%S'\n", FileName);
+        return Status;
+    }
+
+    /* Load the PE/COFF image file */
+    Status = PeCoffProtocol->LoadImage(ModuleHandle, MemoryType, VirtualAddress, (PVOID*)ImageContext);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Unable to load the file */
+        XtLdrProtocol->Debug.Print(L"ERROR: Failed to load '%S'\n", FileName);
+        return Status;
+    }
+
+    /* Close image file */
+    ModuleHandle->Close(ModuleHandle);
+
+    /* Check PE/COFF image machine type compatibility */
+    PeCoffProtocol->GetMachineType(*ImageContext, &MachineType);
+    if(MachineType != _ARCH_IMAGE_MACHINE_TYPE)
+    {
+        /* Machine type mismatch */
+        XtLdrProtocol->Debug.Print(L"ERROR: Loaded incompatible PE/COFF image (machine type mismatch)\n");
+        return STATUS_EFI_INCOMPATIBLE_VERSION;
+    }
+
+    /* Check PE/COFF image subsystem */
+    PeCoffProtocol->GetSubSystem(*ImageContext, &SubSystem);
+    if(SubSystem != PECOFF_IMAGE_SUBSYSTEM_XT_NATIVE_KERNEL &&
+       SubSystem != PECOFF_IMAGE_SUBSYSTEM_XT_NATIVE_APPLICATION &&
+       SubSystem != PECOFF_IMAGE_SUBSYSTEM_XT_NATIVE_DRIVER)
+    {
+        XtLdrProtocol->Debug.Print(L"WARNING: Loaded PE/COFF image with non-XT subsystem set\n");
+    }
+
+    /* Print debug message */
+    XtLdrProtocol->Debug.Print(L"Loaded %S at PA: %P, VA: %P\n", FileName,
+                               (*ImageContext)->PhysicalAddress, (*ImageContext)->VirtualAddress);
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * This routine initiates an XTOS boot sequence.
+ *
+ * @param BootDir
+ *        An EFI handle to the XTOS boot directory.
+ *
+ * @param Parameters
+ *        Input parameters with detailed system configuration like boot device or kernel path.
+ *
+ * @return This routine returns a status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+Xtos::RunBootSequence(IN PEFI_FILE_HANDLE BootDir,
+                      IN PXTBL_BOOT_PARAMETERS Parameters)
+{
+    EFI_GUID LoadedImageGuid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
+    EFI_GUID FrameBufGuid = XT_FRAMEBUFFER_PROTOCOL_GUID;
+    PKERNEL_INITIALIZATION_BLOCK KernelParameters;
+    PXTBL_FRAMEBUFFER_PROTOCOL FrameBufProtocol;
+    PPECOFF_IMAGE_CONTEXT ImageContext = NULLPTR;
+    PEFI_LOADED_IMAGE_PROTOCOL ImageProtocol;
+    PVOID VirtualAddress, VirtualMemoryArea;
+    PXT_ENTRY_POINT KernelEntryPoint;
+    EFI_HANDLE ProtocolHandle;
+    EFI_STATUS Status;
+    XTBL_PAGE_MAPPING PageMap;
+
+    /* Initialize XTOS startup sequence */
+    XtLdrProtocol->Debug.Print(L"Initializing XTOS startup sequence\n");
+
+    /* Load FrameBuffer protocol */
+    Status = XtLdrProtocol->Protocol.Open(&ProtocolHandle, (PVOID*)&FrameBufProtocol, &FrameBufGuid);
+    if(Status == STATUS_EFI_SUCCESS)
+    {
+        /* Make sure FrameBuffer is initialized */
+        FrameBufProtocol->Initialize();
+        FrameBufProtocol->SetScreenResolution(0, 0);
+    }
+
+    /* Close FrameBuffer protocol */
+    XtLdrProtocol->Protocol.Close(&ProtocolHandle, &FrameBufGuid);
+
+    /* Set base virtual memory area for the kernel mappings */
+    VirtualMemoryArea = (PVOID)KSEG0_BASE;
+    VirtualAddress = (PVOID)(KSEG0_BASE + KSEG0_KERNEL_BASE);
+
+    /* Initialize virtual memory mappings */
+    XtLdrProtocol->Memory.InitializePageMap(&PageMap, DeterminePagingLevel(Parameters->Parameters), Size4K);
+
+    Status = XtLdrProtocol->Memory.MapEfiMemory(&PageMap, &VirtualMemoryArea, NULLPTR);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        return Status;
+    }
+
+    /* Load the kernel */
+    Status = LoadModule(BootDir, Parameters->KernelFile, VirtualAddress, LoaderSystemCode, &ImageContext);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to load the kernel */
+        return Status;
+    }
+
+    /* Add kernel image memory mapping */
+    Status = XtLdrProtocol->Memory.MapVirtualMemory(&PageMap, ImageContext->VirtualAddress,
+                                                    ImageContext->PhysicalAddress, ImageContext->ImagePages,
+                                                    LoaderSystemCode);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        return Status;
+    }
+
+    /* Set next valid virtual address right after the kernel */
+    VirtualAddress = (PUINT8)VirtualAddress + (ImageContext->ImagePages * EFI_PAGE_SIZE);
+
+    /* Find and map APIC base address */
+    Status = InitializeApicBase(&PageMap);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to setup kernel initialization block */
+        XtLdrProtocol->Debug.Print(L"Failed to initialize APIC (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* Store virtual address of kernel initialization block for future kernel call */
+    KernelParameters = (PKERNEL_INITIALIZATION_BLOCK)VirtualAddress;
+
+    /* Setup and map kernel initialization block */
+    Status = InitializeLoaderBlock(&PageMap, &VirtualAddress, Parameters);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to setup kernel initialization block */
+        XtLdrProtocol->Debug.Print(L"Failed to setup kernel initialization block (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* Get kernel entry point */
+    PeCoffProtocol->GetEntryPoint(ImageContext, (PVOID*)&KernelEntryPoint);
+
+    /* Close boot directory handle */
+    BootDir->Close(BootDir);
+
+    /* Enable paging */
+    XtLdrProtocol->Protocol.Open(&ProtocolHandle, (PVOID*)&ImageProtocol, &LoadedImageGuid);
+    Status = EnablePaging(&PageMap);
+    if(Status != STATUS_EFI_SUCCESS)
+    {
+        /* Failed to enable paging */
+        XtLdrProtocol->Debug.Print(L"Failed to enable paging (Status Code: 0x%zX)\n", Status);
+        return Status;
+    }
+
+    /* Call XTOS kernel */
+    XtLdrProtocol->Debug.Print(L"Booting the XTOS kernel\n");
+    KernelEntryPoint(KernelParameters);
+
+    /* Return success */
+    return STATUS_EFI_SUCCESS;
+}
+
+/**
+ * This routine is the entry point of the XT EFI boot loader module.
+ *
+ * @param ImageHandle
+ *        Firmware-allocated handle that identifies the image.
+ *
+ * @param SystemTable
+ *        Provides the EFI system table.
+ *
+ * @return This routine returns status code.
+ *
+ * @since XT 1.0
+ */
+XTCDECL
+EFI_STATUS
+XtLdrModuleMain(IN EFI_HANDLE ImageHandle,
+                IN PEFI_SYSTEM_TABLE SystemTable)
+{
+    /* Initialize XTOS module */
+    return Xtos::InitializeModule(ImageHandle, SystemTable);
+}