Initial memory manager initialization code

sdk/xtdk/amd64/mmtypes.h

@@ -14,9 +14,26 @@
 
 /* Pages related definitions */
 #define MM_PAGE_MASK                               0xFFF
-#define MM_PAGE_SHIFT                              12
+#define MM_PAGE_SHIFT                              12L
 #define MM_PAGE_SIZE                               4096
 
+#define MM_PTE_BASE                                0xFFFFF68000000000UI64
+#define MM_PDE_BASE                                0xFFFFF6FB40000000UI64
+#define MM_PPE_BASE                                0xFFFFF6FB7DA00000UI64
+#define MM_PXE_BASE                                0xFFFFF6FB7DBED000UI64
+
+#define MM_PTI_SHIFT                               12
+#define MM_PDI_SHIFT                               21
+#define MM_PPI_SHIFT                               30
+#define MM_PXI_SHIFT                               39
+
+#define MM_PTE_SHIFT                               3
+
+#define MM_PXE_PER_PAGE                            512
+
+/* Minimum number of physical pages needed by the system */
+#define MM_MINIMUM_PHYSICAL_PAGES                  2048
+
 /* Page size enumeration list */
 typedef enum _PAGE_SIZE
 {

sdk/xtdk/i686/mmtypes.h

@@ -17,6 +17,9 @@
 #define MM_PAGE_SHIFT                              12
 #define MM_PAGE_SIZE                               4096
 
+/* Minimum number of physical pages needed by the system */
+#define MM_MINIMUM_PHYSICAL_PAGES                  1100
+
 /* Page size enumeration list */
 typedef enum _PAGE_SIZE
 {

xtoskrnl/CMakeLists.txt

@@ -36,7 +36,10 @@ list(APPEND XTOSKRNL_SOURCE
     ${XTOSKRNL_SOURCE_DIR}/ke/${ARCH}/krnlinit.c
     ${XTOSKRNL_SOURCE_DIR}/ke/${ARCH}/kthread.c
     ${XTOSKRNL_SOURCE_DIR}/ke/${ARCH}/proc.c
+    ${XTOSKRNL_SOURCE_DIR}/mm/globals.c
+    ${XTOSKRNL_SOURCE_DIR}/mm/init.c
     ${XTOSKRNL_SOURCE_DIR}/mm/kpools.c
+    ${XTOSKRNL_SOURCE_DIR}/mm/${ARCH}/init.c
     ${XTOSKRNL_SOURCE_DIR}/mm/${ARCH}/pages.c
     ${XTOSKRNL_SOURCE_DIR}/po/idle.c
     ${XTOSKRNL_SOURCE_DIR}/rtl/atomic.c

xtoskrnl/includes/amd64/mmi.h

@@ -18,4 +18,24 @@ VOID
 MmZeroPages(IN PVOID Address,
             IN ULONG Size);
 
+XTAPI
+PMMPTE
+MmpGetPdeAddress(PVOID Address);
+
+XTAPI
+PMMPTE
+MmpGetPpeAddress(PVOID Address);
+
+XTAPI
+PMMPTE
+MmpGetPteAddress(PVOID Address);
+
+XTAPI
+PMMPTE
+MmpGetPxeAddress(PVOID Address);
+
+XTAPI
+VOID
+MmpInitializeArchitecture();
+
 #endif /* __XTOSKRNL_AMD64_MMI_H */

xtoskrnl/includes/globals.h

@@ -42,4 +42,19 @@ EXTERN KSERVICE_DESCRIPTOR_TABLE KeServiceDescriptorTable[KSERVICE_TABLES_COUNT]
 /* Kernel process list */
 EXTERN LIST_ENTRY KepProcessListHead;
 
+/* Biggest free memory descriptor */
+EXTERN PLOADER_MEMORY_MAPPING MmFreeDescriptor;
+
+/* Highest physical page number */
+EXTERN ULONG_PTR MmHighestPhysicalPage;
+
+/* Lowest physical page number */
+EXTERN ULONG_PTR MmLowestPhysicalPage;
+
+/* Number of physical pages */
+EXTERN ULONG MmNumberOfPhysicalPages;
+
+/* Old biggest free memory descriptor */
+EXTERN LOADER_MEMORY_MAPPING MmOldFreeDescriptor;
+
 #endif /* __XTOSKRNL_GLOBALS_H */

xtoskrnl/includes/i686/mmi.h

@@ -18,4 +18,8 @@ VOID
 MmZeroPages(IN PVOID Address,
             IN ULONG Size);
 
+XTAPI
+VOID
+MmpInitializeArchitecture();
+
 #endif /* __XTOSKRNL_I686_MMI_H */

xtoskrnl/includes/mmi.h

@@ -24,4 +24,20 @@ VOID
 MmFreeKernelStack(IN PVOID Stack,
                   IN BOOLEAN LargeStack);
 
+XTAPI
+VOID
+MmInitializeMemoryManager();
+
+XTAPI
+VOID
+MmpScanMemoryDescriptors();
+
+XTAPI
+BOOLEAN
+MmpVerifyMemoryTypeFree(LOADER_MEMORY_TYPE MemoryType);
+
+XTAPI
+BOOLEAN
+MmpVerifyMemoryTypeInvisible(LOADER_MEMORY_TYPE MemoryType);
+
 #endif /* __XTOSKRNL_MMI_H */

xtoskrnl/mm/amd64/init.c

@@ -0,0 +1,104 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/mm/amd64/init.c
+ * DESCRIPTION:     Architecture specific Memory Manager initialization routines
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.h>
+
+
+/**
+ * Gets the address of the PDE (Page Directory Entry), that maps given address.
+ *
+ * @param Address
+ *        Specifies the address to find the PDE for.
+ *
+ * @return This routine returns the address of the PDE.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+PMMPTE
+MmpGetPdeAddress(PVOID Address)
+{
+    ULONGLONG Offset;
+
+    Offset = ((((ULONGLONG)Address & (((ULONGLONG)1 << 48) - 1)) >> MM_PDI_SHIFT) << MM_PTE_SHIFT);
+    return (PMMPTE)(MM_PDE_BASE + Offset);
+}
+
+/**
+ * Gets the address of the PPE (Page Directory Pointer Table Entry), that maps given address.
+ *
+ * @param Address
+ *        Specifies the address to find the PPE for.
+ *
+ * @return This routine returns the address of the PPE.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+PMMPTE
+MmpGetPpeAddress(PVOID Address)
+{
+    ULONGLONG Offset;
+
+    Offset = ((((ULONGLONG)Address & (((ULONGLONG)1 << 48) - 1)) >> MM_PPI_SHIFT) << MM_PTE_SHIFT);
+    return (PMMPTE)(MM_PPE_BASE + Offset);
+}
+
+/**
+ * Gets the address of the PTE (Page Table Entry), that maps given address.
+ *
+ * @param Address
+ *        Specifies the address to find the PTE for.
+ *
+ * @return This routine returns the address of the PTE.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+PMMPTE
+MmpGetPteAddress(PVOID Address)
+{
+    ULONGLONG Offset;
+
+    Offset = ((((ULONGLONG)Address & (((ULONGLONG)1 << 48) - 1)) >> MM_PTI_SHIFT) << MM_PTE_SHIFT);
+    return (PMMPTE)(MM_PTE_BASE + Offset);
+}
+
+/**
+ * Gets the address of the PXE (Extended Page Entry), that maps given address.
+ *
+ * @param Address
+ *        Specifies the address to find the PXE for.
+ *
+ * @return This routine returns the address of the PXE.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+PMMPTE
+MmpGetPxeAddress(PVOID Address)
+{
+    ULONGLONG Offset;
+
+    Offset = (((ULONGLONG)Address >> MM_PXI_SHIFT) & (MM_PXE_PER_PAGE - 1));
+    return (PMMPTE)(MM_PXE_BASE + Offset);
+}
+
+/**
+ * Performs architecture specific initialization of the XTOS Memory Manager.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+MmpInitializeArchitecture()
+{
+    UNIMPLEMENTED;
+}

xtoskrnl/mm/globals.c

@@ -0,0 +1,25 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/mm/globals.c
+ * DESCRIPTION:     Memory Manager initialization routines
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.h>
+
+
+/* Biggest free memory descriptor */
+PLOADER_MEMORY_MAPPING MmFreeDescriptor;
+
+/* Highest physical page number */
+ULONG_PTR MmHighestPhysicalPage;
+
+/* Lowest physical page number */
+ULONG_PTR MmLowestPhysicalPage = -1;
+
+/* Number of physical pages */
+ULONG MmNumberOfPhysicalPages;
+
+/* Old biggest free memory descriptor */
+LOADER_MEMORY_MAPPING MmOldFreeDescriptor;

xtoskrnl/mm/i686/init.c

@@ -0,0 +1,24 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/mm/i686/init.c
+ * DESCRIPTION:     Architecture specific Memory Manager initialization routines
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#include <xtos.h>
+
+
+/**
+ * Performs architecture specific initialization of the XTOS Memory Manager.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+VOID
+MmpInitializeArchitecture()
+{
+    UNIMPLEMENTED;
+}