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MdeModulePkg PiSmmCore: Retrieve Smram base address from system table 

PiSmmIpl records LoadModuleAtFixAddressSmramBase in LMFAConfigurationTable.
Update PiSmmCore to directly get the address from this system table.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This commit is contained in:
Liming Gao 2016-12-12 10:09:51 +08:00
parent a7d10bb09d
commit 94a1bc1212
3 changed files with 12 additions and 40 deletions
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1
MdeModulePkg/Core/PiSmmCore/PiSmmCore.h
View File

@ -37,6 +37,7 @@
#include <Guid/EventGroup.h>
#include <Guid/EventLegacyBios.h>
#include <Guid/MemoryProfile.h>
#include <Guid/LoadModuleAtFixedAddress.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>

2
MdeModulePkg/Core/PiSmmCore/PiSmmCore.inf
View File

@ -98,6 +98,8 @@
## SOMETIMES_PRODUCES ## GUID # Install protocol
gEdkiiSmmMemoryProfileGuid
gEdkiiPiSmmMemoryAttributesTableGuid ## SOMETIMES_PRODUCES ## SystemTable
## SOMETIMES_CONSUMES ## SystemTable
gLoadFixedAddressConfigurationTableGuid
[UserExtensions.TianoCore."ExtraFiles"]
PiSmmCoreExtra.uni

49
MdeModulePkg/Core/PiSmmCore/Pool.c
View File

@ -59,10 +59,9 @@ SmmInitializeMemoryServices (
)
{
UINTN Index;
UINT64 SmmCodeSize;
UINTN CurrentSmramRangesIndex;
UINT64 MaxSize;
EFI_STATUS Status;
UINTN SmmPoolTypeIndex;
EFI_LOAD_FIXED_ADDRESS_CONFIGURATION_TABLE *LMFAConfigurationTable;
//
// Initialize Pool list
@ -72,45 +71,15 @@ SmmInitializeMemoryServices (
InitializeListHead (&mSmmPoolLists[SmmPoolTypeIndex][Index]);
}
}
CurrentSmramRangesIndex = 0;
//
// If Loading Module At fixed Address feature is enabled, cache the SMRAM base here
//
if (PcdGet64(PcdLoadModuleAtFixAddressEnable) != 0) {
//
// Build tool will calculate the smm code size and then patch the PcdLoadFixAddressSmmCodePageNumber
//
SmmCodeSize = LShiftU64 (PcdGet32(PcdLoadFixAddressSmmCodePageNumber), EFI_PAGE_SHIFT);
//
// Find the largest SMRAM range between 1MB and 4GB that is at least 256KB - 4K in size
//
for (Index = 0, MaxSize = SIZE_256KB - EFI_PAGE_SIZE; Index < SmramRangeCount; Index++) {
//
// Skip any SMRAM region that is already allocated, needs testing, or needs ECC initialization
//
if ((SmramRanges[Index].RegionState & (EFI_ALLOCATED | EFI_NEEDS_TESTING | EFI_NEEDS_ECC_INITIALIZATION)) != 0) {
continue;
}
if (SmramRanges[Index].CpuStart >= BASE_1MB) {
if ((SmramRanges[Index].CpuStart + SmramRanges[Index].PhysicalSize - 1) <= MAX_ADDRESS) {
if (SmramRanges[Index].PhysicalSize >= MaxSize) {
MaxSize = SmramRanges[Index].PhysicalSize;
CurrentSmramRangesIndex = Index;
}
}
}
}
gLoadModuleAtFixAddressSmramBase = SmramRanges[CurrentSmramRangesIndex].CpuStart;
//
// cut out a memory range from this SMRAM range with the size SmmCodeSize to hold SMM driver code
// A notable thing is that SMM core is already loaded into this range.
//
SmramRanges[CurrentSmramRangesIndex].CpuStart = SmramRanges[CurrentSmramRangesIndex].CpuStart + SmmCodeSize;
SmramRanges[CurrentSmramRangesIndex].PhysicalSize = SmramRanges[CurrentSmramRangesIndex].PhysicalSize - SmmCodeSize;
Status = EfiGetSystemConfigurationTable (
&gLoadFixedAddressConfigurationTableGuid,
(VOID **) &LMFAConfigurationTable
);
if (!EFI_ERROR (Status) && LMFAConfigurationTable != NULL) {
gLoadModuleAtFixAddressSmramBase = LMFAConfigurationTable->SmramBase;
}
//
// Add Free SMRAM regions
// Need add Free memory at first, to let gSmmMemoryMap record data