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UefiCpuPkg/PiSmmCpuDxeSmm: Remove SmBases relocation logic

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This patch is to remove legacy SmBase relocation in
PiSmmCpuDxeSmm Driver. The responsibility for SmBase
relocation has been transferred to the SmmRelocationInit
interface, which now handles the following tasks:
1. Relocates the SmBase for each processor.
2. Generates the gSmmBaseHobGuid HOB.

As a result of this change, the PiSmmCpuDxeSmm driver's
role in SMM environment setup is simplified to:
1. Utilize the gSmmBaseHobGuid to determine the SmBase.
2. Perform the ExecuteFirstSmiInit() to do early SMM
initialization.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Zeng Star <star.zeng@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
This commit is contained in:
Jiaxin Wu
2024-01-12 15:33:20 +08:00
committed by mergify[bot]
parent 23ed7f209c
commit 2727231b0a
11 changed files with 40 additions and 856 deletions
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10
UefiCpuPkg/PiSmmCpuDxeSmm/MpService.c
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@@ -1513,9 +1513,7 @@ SmiRendezvous (
ASSERT (CpuIndex < mMaxNumberOfCpus);
if (mSmmRelocated) {
ASSERT (mSmmInitialized != NULL);
}
ASSERT (mSmmInitialized != NULL);
//
// Save Cr2 because Page Fault exception in SMM may override its value,
@@ -1524,11 +1522,11 @@ SmiRendezvous (
Cr2 = 0;
SaveCr2 (&Cr2);
if (mSmmRelocated && !mSmmInitialized[CpuIndex]) {
if (!mSmmInitialized[CpuIndex]) {
//
// Perform SmmInitHandler for CpuIndex
// Perform InitializeSmm for CpuIndex
//
SmmInitHandler ();
InitializeSmm ();
//
// Restore Cr2