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UefiCpuPkg/PiSmmCpu: Check GCD and UEFI mem attrib table.

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1) UefiCpuPkg/PiSmmCpu: Check for untested memory in GCD

It treats GCD untested memory as invalid SMM
communication buffer.

2) UefiCpuPkg/PiSmmCpu: Check EFI_RUNTIME_RO in UEFI mem attrib table.

It treats the UEFI runtime page with EFI_MEMORY_RO attribute as
invalid SMM communication buffer.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Jiewen Yao
2018-01-04 10:37:42 +08:00
parent dcfd55d97a
commit c4c7fb388e
4 changed files with 218 additions and 28 deletions
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3
UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.h
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@@ -27,6 +27,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Protocol/SmmCpuService.h>
#include <Guid/AcpiS3Context.h>
#include <Guid/MemoryAttributesTable.h>
#include <Guid/PiSmmMemoryAttributesTable.h>
#include <Library/BaseLib.h>
@@ -44,6 +45,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/DebugAgentLib.h>
#include <Library/UefiLib.h>
#include <Library/HobLib.h>
#include <Library/LocalApicLib.h>
#include <Library/UefiCpuLib.h>
@@ -419,6 +421,7 @@ extern SPIN_LOCK *mConfigSmmCodeAccessCheckLock;
extern SPIN_LOCK *mMemoryMappedLock;
extern EFI_SMRAM_DESCRIPTOR *mSmmCpuSmramRanges;
extern UINTN mSmmCpuSmramRangeCount;
extern UINT8 mPhysicalAddressBits;
//
// Copy of the PcdPteMemoryEncryptionAddressOrMask