LEGACY_BIOS_INSTANCE *Private;\r
EFI_TO_COMPATIBILITY16_INIT_TABLE *EfiToLegacy16InitTable;\r
EFI_PHYSICAL_ADDRESS MemoryAddress;\r
+ EFI_PHYSICAL_ADDRESS EbdaReservedBaseAddress;\r
VOID *MemoryPtr;\r
EFI_PHYSICAL_ADDRESS MemoryAddressUnder1MB;\r
UINTN Index;\r
//\r
// Allocate all 32k chunks from 0x60000 ~ 0x88000 for Legacy OPROMs that\r
// don't use PMM but look for zeroed memory. Note that various non-BBS\r
- // SCSIs expect different areas to be free\r
+ // OpROMs expect different areas to be free\r
//\r
- for (MemStart = 0x60000; MemStart < 0x88000; MemStart += 0x1000) {\r
+ EbdaReservedBaseAddress = MemoryAddress;\r
+ MemoryAddress = PcdGet32 (PcdOpromReservedMemoryBase);\r
+ MemorySize = PcdGet32 (PcdOpromReservedMemorySize);\r
+ //\r
+ // Check if base address and size for reserved memory are 4KB aligned.\r
+ //\r
+ ASSERT ((MemoryAddress & 0xFFF) == 0);\r
+ ASSERT ((MemorySize & 0xFFF) == 0);\r
+ //\r
+ // Check if the reserved memory is below EBDA reserved range.\r
+ //\r
+ ASSERT ((MemoryAddress < EbdaReservedBaseAddress) && ((MemoryAddress + MemorySize - 1) < EbdaReservedBaseAddress));\r
+ for (MemStart = MemoryAddress; MemStart < MemoryAddress + MemorySize; MemStart += 0x1000) {\r
Status = AllocateLegacyMemory (\r
AllocateAddress,\r
MemStart,\r