diff options
| author | rsun3 <rsun3@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-08-30 09:12:43 +0000 |
|---|---|---|
| committer | rsun3 <rsun3@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-08-30 09:12:43 +0000 |
| commit | 2e7c8ac41d4de162974f10e9170d60182c3bebec (patch) | |
| tree | 416805a179d6e7ed979a5236ea3a122ce71a84bd /EdkCompatibilityPkg | |
| parent | f767f99009995ede5f7ae808d75bcf862b692485 (diff) | |
| download | edk2-platforms-2e7c8ac41d4de162974f10e9170d60182c3bebec.tar.xz | |
Enhance the SmmBaseHelper driver to support changing SMBASE/IORestart/AutoHALTRestart CPU Save State registers for Framework SMM driver.
Signed-off-by: rsun3
Reviewed-by: jfan12
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12230 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'EdkCompatibilityPkg')
| -rw-r--r-- | EdkCompatibilityPkg/Compatibility/SmmBaseHelper/SmmBaseHelper.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/SmmBaseHelper.c b/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/SmmBaseHelper.c index 83647b9973..99dccab8e9 100644 --- a/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/SmmBaseHelper.c +++ b/EdkCompatibilityPkg/Compatibility/SmmBaseHelper/SmmBaseHelper.c @@ -4,7 +4,7 @@ This driver is the counterpart of the SMM Base On SMM Base2 Thunk driver. It
provides helping services in SMM to the SMM Base On SMM Base2 Thunk driver.
- Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -144,17 +144,13 @@ ReadCpuSaveState ( SaveState = &mFrameworkSmst->CpuSaveState[CpuIndex].Ia32SaveState;
}
- if (State->x86.SMMRevId < EFI_SMM_MIN_REV_ID_x64) {
- SaveState->SMBASE = State->x86.SMBASE;
- SaveState->SMMRevId = State->x86.SMMRevId;
- SaveState->IORestart = State->x86.IORestart;
- SaveState->AutoHALTRestart = State->x86.AutoHALTRestart;
- } else {
- SaveState->SMBASE = State->x64.SMBASE;
- SaveState->SMMRevId = State->x64.SMMRevId;
- SaveState->IORestart = State->x64.IORestart;
- SaveState->AutoHALTRestart = State->x64.AutoHALTRestart;
- }
+ //
+ // Note that SMBASE/SMMRevId/IORestart/AutoHALTRestart are in same location in IA32 and X64 CPU Save State Map.
+ //
+ SaveState->SMBASE = State->x86.SMBASE;
+ SaveState->SMMRevId = State->x86.SMMRevId;
+ SaveState->IORestart = State->x86.IORestart;
+ SaveState->AutoHALTRestart = State->x86.AutoHALTRestart;
for (Index = 0; Index < sizeof (mCpuSaveStateConvTable) / sizeof (CPU_SAVE_STATE_CONVERSION); Index++) {
///
@@ -188,15 +184,26 @@ WriteCpuSaveState ( IN EFI_SMM_CPU_SAVE_STATE *ToWrite
)
{
- EFI_STATUS Status;
- UINTN Index;
+ EFI_STATUS Status;
+ UINTN Index;
+ EFI_SMM_CPU_STATE *State;
EFI_SMI_CPU_SAVE_STATE *SaveState;
+ State = (EFI_SMM_CPU_STATE *)gSmst->CpuSaveState[CpuIndex];
+
if (ToWrite != NULL) {
SaveState = &ToWrite->Ia32SaveState;
} else {
SaveState = &mFrameworkSmst->CpuSaveState[CpuIndex].Ia32SaveState;
}
+
+ //
+ // SMMRevId is read-only.
+ // Note that SMBASE/IORestart/AutoHALTRestart are in same location in IA32 and X64 CPU Save State Map.
+ //
+ State->x86.SMBASE = SaveState->SMBASE;
+ State->x86.IORestart = SaveState->IORestart;
+ State->x86.AutoHALTRestart = SaveState->AutoHALTRestart;
for (Index = 0; Index < sizeof (mCpuSaveStateConvTable) / sizeof (CPU_SAVE_STATE_CONVERSION); Index++) {
Status = mSmmCpu->WriteSaveState (
|