Initial XTLDR configuration

xtldr2/CMakeLists.txt

@@ -8,6 +8,7 @@ include_directories(
 
 # Specify list of source code files
 list(APPEND XTLDR_SOURCE
+    ${XTLDR_SOURCE_DIR}/config.c
     ${XTLDR_SOURCE_DIR}/console.c
     ${XTLDR_SOURCE_DIR}/globals.c
     ${XTLDR_SOURCE_DIR}/hardware.c

xtldr2/config.c

@@ -0,0 +1,116 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtldr/config.c
+ * DESCRIPTION:     XT Boot Manager Configuration
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtbm.h>
+
+
+XTCDECL
+VOID
+BmpParseCommandLineOptions(VOID)
+{
+    EFI_GUID LIPGuid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
+    PEFI_LOADED_IMAGE_PROTOCOL LoadedImage;
+    EFI_STATUS Status;
+
+    /* Handle loaded image protocol */
+    Status = EfiSystemTable->BootServices->HandleProtocol(EfiImageHandle, &LIPGuid, (PVOID *)&LoadedImage);
+    if(Status == STATUS_EFI_SUCCESS)
+    {
+        /* Check if launched from UEFI shell */
+        if(LoadedImage && LoadedImage->LoadOptions)
+        {
+            /* Update global boot loader configuration */
+            BmpUpdateGlobalConfiguration(LoadedImage->LoadOptions);
+        }
+    }
+}
+
+XTCDECL
+VOID
+BmpUpdateGlobalConfiguration(IN PWCHAR Options)
+{
+    PWCHAR Argument, LastArg;
+    SIZE_T Length;
+
+    /* Tokenize provided options */
+    Argument = RtlWideStringTokenize(Options, L" ", &LastArg);
+
+    /* Iterate over all arguments passed to boot loader */
+    while(Argument != NULL)
+    {
+        /* Check all provided parameters */
+        if(RtlWideStringCompare(Argument, L"DEFAULT=", 8) == 0)
+        {
+            /* Skip to the argument value and calculate argument length */
+            Argument += 8;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Save default OS parameter in global configuration */
+            BmAllocateEfiPool(Length, (PVOID *)&BmpConfiguration.Default);
+            RtlCopyMemory(BmpConfiguration.Default, Argument, (Length * sizeof(WCHAR)) - 1);
+            BmpConfiguration.Default[Length] = '\0';
+        }
+        else if(RtlWideStringCompare(Argument, L"DEBUG=", 6) == 0)
+        {
+            /* Skip to the argument value */
+            Argument += 6;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Save debug port in global configuration */
+            BmAllocateEfiPool(Length, (PVOID *)&BmpConfiguration.Debug);
+            RtlCopyMemory(BmpConfiguration.Debug, Argument, (Length * sizeof(WCHAR)) - 1);
+            BmpConfiguration.Debug[Length] = '\0';
+        }
+        else if(RtlWideStringCompare(Argument, L"SHELL", 5) == 0)
+        {
+            /* Force shell mode */
+            BmpConfiguration.Shell = TRUE;
+        }
+        else if(RtlWideStringCompare(Argument, L"THEME=", 6) == 0)
+        {
+            /* Skip to the argument value */
+            Argument += 6;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Save theme in global configuration */
+            BmAllocateEfiPool(Length, (PVOID *)&BmpConfiguration.Theme);
+            RtlCopyMemory(BmpConfiguration.Theme, Argument, (Length * sizeof(WCHAR)) - 1);
+            BmpConfiguration.Theme[Length] = '\0';
+        }
+        else if(RtlWideStringCompare(Argument, L"TIMEOUT=", 8) == 0)
+        {
+            /* Skip to the argument value */
+            Argument += 8;
+
+            /* Zero the timeout */
+            BmpConfiguration.Timeout = 0;
+
+            /* Read the timeout value and store it in global configuration */
+            while(*Argument >= '0' && *Argument <= '9')
+            {
+                BmpConfiguration.Timeout *= 10;
+                BmpConfiguration.Timeout += *Argument - '0';
+                Argument++;
+            }
+        }
+        else if(RtlWideStringCompare(Argument, L"TUNE=", 5) == 0)
+        {
+            /* Skip to the argument value */
+            Argument += 5;
+            Length = RtlWideStringLength(Argument, 0);
+
+            /* Save theme in global configuration */
+            BmAllocateEfiPool(Length, (PVOID *)&BmpConfiguration.Tune);
+            RtlCopyMemory(BmpConfiguration.Tune, Argument, (Length * sizeof(WCHAR)) - 1);
+            BmpConfiguration.Tune[Length] = '\0';
+        }
+
+        /* Take next argument */
+        Argument = RtlWideStringTokenize(NULL, L" ", &LastArg);
+    }
+}

xtldr2/globals.c

@@ -9,6 +9,9 @@
 #include <xtbm.h>
 
 
+/* XT Boot Loader configuration data */
+XTBM_CONFIGURATION BmpConfiguration = {0};
+
 /* XT Boot Loader hex table */
 STATIC PUINT16 BmpHexTable = L"0123456789ABCDEF";
 

xtldr2/includes/bootman.h

@@ -72,12 +72,17 @@ EFI_STATUS
 BmStartXtLoader(IN EFI_HANDLE ImageHandle,
                 IN PEFI_SYSTEM_TABLE SystemTable);
 
+
 XTCDECL
 VOID
 BmpFormatString(IN BMPRINTCHAR PrintCharRoutine,
                 IN PUINT16 Format,
                 IN ...);
 
+XTCDECL
+VOID
+BmpParseCommandLineOptions(VOID);
+
 XTCDECL
 VOID
 BmpPrintSigned32String(IN BMPRINTCHAR PrintCharRoutine,
@@ -108,4 +113,8 @@ XTCDECL
 UINT64
 BmpReadStringPadding(IN PUINT16 *Format);
 
+XTCDECL
+VOID
+BmpUpdateGlobalConfiguration(IN PWCHAR Options);
+
 #endif /* __XTLDR_BOOTMAN_H */

xtldr2/includes/globals.h

@@ -12,6 +12,9 @@
 #include <xtbmapi.h>
 
 
+/* XT Boot Loader configuration data */
+EXTERN XTBM_CONFIGURATION BmpConfiguration;
+
 /* XT Boot Loader hex table */
 EXTERN PUINT16 BmpHexTable;