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We now return memory map.

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We added a new member to the ARM board configuration block that specifies the number of memory map entries.
Board boot loaders are responsible for sending the base and size of all DRAM and FLASH banks. FLASH banks should be marked as Reserved so we don't try using them as RAM.

svn path=/trunk/; revision=32162
This commit is contained in:
ReactOS Portable Systems Group 2008-02-06 15:47:02 +00:00
parent 4980e5f7eb
commit 1e5a0b3061
3 changed files with 12 additions and 2 deletions
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9
reactos/boot/freeldr/freeldr/arch/arm/stubs.c
View file

@ -127,8 +127,13 @@ ULONG
ArmMemGetMemoryMap(OUT PBIOS_MEMORY_MAP BiosMemoryMap,
IN ULONG MaxMemoryMapSize)
{
while (TRUE);
return FALSE;
//
// Return whatever the board returned to us (CS0 Base + Size and FLASH0)
//
RtlCopyMemory(BiosMemoryMap,
ArmBoardBlock->MemoryMap,
ArmBoardBlock->MemoryMapEntryCount * sizeof(BIOS_MEMORY_MAP));
return ArmBoardBlock->MemoryMapEntryCount;
}
VOID

1
reactos/boot/freeldr/freeldr/include/arch/arm/hardware.h
View file

@ -38,6 +38,7 @@ typedef struct _ARM_BOARD_CONFIGURATION_BLOCK
ULONG ClockRate;
ULONG TimerRegisterBase;
ULONG UartRegisterBase;
ULONG MemoryMapEntryCount;
PBIOS_MEMORY_MAP MemoryMap;
CHAR CommandLine[256];
} ARM_BOARD_CONFIGURATION_BLOCK, *PARM_BOARD_CONFIGURATION_BLOCK;

4
reactos/boot/freeldr/freeldr/mm/meminit.c
View file

@ -106,6 +106,10 @@ BOOLEAN MmInitializeMemoryManager(VOID)
MmMarkPagesInLookupTable(PageLookupTableAddress, 0x90, 0x10, LoaderOsloaderHeap); // Disk read buffer for int 13h. DISKREADBUFFER
MmMarkPagesInLookupTable(PageLookupTableAddress, 0xA0, 0x60, LoaderFirmwarePermanent); // ROM / Video
MmMarkPagesInLookupTable(PageLookupTableAddress, 0xFFF, 1, LoaderSpecialMemory); // unusable memory
#elif __arm__
MmMarkPagesInLookupTable(PageLookupTableAddress, 0x00, 1, LoaderFirmwarePermanent); // arm exception handlers
MmMarkPagesInLookupTable(PageLookupTableAddress, 0x01, 7, LoaderFirmwareTemporary); // arm board block + freeldr stack + cmdline
MmMarkPagesInLookupTable(PageLookupTableAddress, 0x08, 0x70, LoaderLoadedProgram); // freeldr image (roughly max. 0x64 pages)
#endif
FreePagesInLookupTable = MmCountFreePagesInLookupTable(PageLookupTableAddress, TotalPagesInLookupTable);