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| author | Jiaxin Wu <jiaxin.wu@intel.com> | 2024-01-12 17:07:13 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2024-05-08 01:53:58 +0000 |
| commit | 4a6400b084d98bea6182a17769049e4f6b6c5627 (patch) | |
| tree | 8e29515e9564effa670f23fdc4c8e6ffdb35d2f3 /OvmfPkg | |
| parent | 04c36d5a1b6cf17de62e2526c968661883567d1f (diff) | |
| download | edk2-4a6400b084d98bea6182a17769049e4f6b6c5627.tar.gz edk2-4a6400b084d98bea6182a17769049e4f6b6c5627.tar.bz2 edk2-4a6400b084d98bea6182a17769049e4f6b6c5627.zip | |
OvmfPkg/SmmCpuFeaturesLib: Check Smbase Relocation is done or not
Based on gSmmBaseHobGuid:
If gSmmBaseHobGuid found, means SmBase info has been relocated
and recorded in the SmBase array.
So, this patch check smbase relocation is done or not in
SmmCpuFeaturesInitializeProcessor().
With SmmRelocationLib, gSmmBaseHobGuid will be always created.
Here this patch just makes the function/logic correct. The SMM
Relocation logic can be totally cleaned from the
SmmCpuFeaturesLib. But it will happen in the future patch set,
this patch does not target to the cleanup work.
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Tested-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Jiewen Yao <Jiewen.yao@intel.com>
Diffstat (limited to 'OvmfPkg')
| -rw-r--r-- | OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c b/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c index 63822b126e..0a6f33c2b1 100644 --- a/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c +++ b/OvmfPkg/Library/SmmCpuFeaturesLib/SmmCpuFeaturesLib.c @@ -28,6 +28,12 @@ //
#define LMA BIT10
+//
+// Indicate SmBase for each Processors has been relocated or not. If TRUE,
+// means no need to do the relocation in SmmCpuFeaturesInitializeProcessor().
+//
+BOOLEAN mSmmCpuFeaturesSmmRelocated;
+
/**
The constructor function
@@ -46,9 +52,9 @@ SmmCpuFeaturesLibConstructor ( {
//
// If gSmmBaseHobGuid found, means SmBase info has been relocated and recorded
- // in the SmBase array. ASSERT it's not supported in OVMF.
+ // in the SmBase array.
//
- ASSERT (GetFirstGuidHob (&gSmmBaseHobGuid) == NULL);
+ mSmmCpuFeaturesSmmRelocated = (BOOLEAN)(GetFirstGuidHob (&gSmmBaseHobGuid) != NULL);
//
// No need to program SMRRs on our virtual platform.
@@ -92,16 +98,21 @@ SmmCpuFeaturesInitializeProcessor ( AMD_SMRAM_SAVE_STATE_MAP *CpuState;
//
- // Configure SMBASE.
+ // No need to configure SMBASE if SmBase relocation has been done.
//
- CpuState = (AMD_SMRAM_SAVE_STATE_MAP *)(UINTN)(
- SMM_DEFAULT_SMBASE +
- SMRAM_SAVE_STATE_MAP_OFFSET
- );
- if ((CpuState->x86.SMMRevId & 0xFFFF) == 0) {
- CpuState->x86.SMBASE = (UINT32)CpuHotPlugData->SmBase[CpuIndex];
- } else {
- CpuState->x64.SMBASE = (UINT32)CpuHotPlugData->SmBase[CpuIndex];
+ if (!mSmmCpuFeaturesSmmRelocated) {
+ //
+ // Configure SMBASE.
+ //
+ CpuState = (AMD_SMRAM_SAVE_STATE_MAP *)(UINTN)(
+ SMM_DEFAULT_SMBASE +
+ SMRAM_SAVE_STATE_MAP_OFFSET
+ );
+ if ((CpuState->x86.SMMRevId & 0xFFFF) == 0) {
+ CpuState->x86.SMBASE = (UINT32)CpuHotPlugData->SmBase[CpuIndex];
+ } else {
+ CpuState->x64.SMBASE = (UINT32)CpuHotPlugData->SmBase[CpuIndex];
+ }
}
//
|