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authorLou, Yun <Yun.Lou@intel.com>2021-09-16 17:27:12 +0800
committermergify[bot] <37929162+mergify[bot]@users.noreply.github.com>2021-09-16 12:50:06 +0000
commit89f7ed8b29f6a88a8fb78d6fb2c92b4f7edf42d2 (patch)
treeb682fe67e1e2f08f1ff8999e99c2693d2f7be456 /UefiCpuPkg
parent010753b7e7cfb5ba2d1acd2200343cc4f55d7962 (diff)
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UefiCpuPkg: Prevent from re-initializing CPU features during S3 resume
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3621 REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3631 Current CPU feature initialization design: During normal boot, CpuFeaturesPei module (inside FSP) initializes the CPU features. During S3 boot, CpuFeaturesPei module does nothing, and CpuSmm driver (in SMRAM) initializes CPU features instead. This code change prevents CpuSmm driver from re-initializing CPU features during S3 resume if CpuFeaturesPei module has done the same initialization. In addition, EDK2 contains DxeIpl PEIM that calls S3RestoreConfig2 PPI during S3 boot and this PPI eventually calls CpuSmm driver (in SMRAM) to initialize the CPU features, so "EDK2 + FSP" does not have the CPU feature initialization issue during S3 boot. But "coreboot" does not contain DxeIpl PEIM and the issue appears, unless "PcdCpuFeaturesInitOnS3Resume" is set to TRUE. Signed-off-by: Jason Lou <yun.lou@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Cc: Eric Dong <eric.dong@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Rahul Kumar <rahul1.kumar@intel.com>
Diffstat (limited to 'UefiCpuPkg')
-rw-r--r--UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c34
-rw-r--r--UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf3
2 files changed, 23 insertions, 14 deletions
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c b/UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c
index 2873cba083..2496abb392 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/CpuS3.c
@@ -1152,23 +1152,31 @@ GetAcpiCpuData (
mAcpiCpuData.ApMachineCheckHandlerBase = (EFI_PHYSICAL_ADDRESS)(UINTN)MachineCheckHandlerForAp;
ZeroMem (&mAcpiCpuData.CpuFeatureInitData, sizeof (CPU_FEATURE_INIT_DATA));
- CopyCpuFeatureInitDatatoSmram (&mAcpiCpuData.CpuFeatureInitData, &AcpiCpuData->CpuFeatureInitData);
- CpuStatus = &mAcpiCpuData.CpuFeatureInitData.CpuStatus;
+ if (!PcdGetBool (PcdCpuFeaturesInitOnS3Resume)) {
+ //
+ // If the CPU features will not be initialized by CpuFeaturesPei module during
+ // next ACPI S3 resume, copy the CPU features initialization data into SMRAM,
+ // which will be consumed in SmmRestoreCpu during next S3 resume.
+ //
+ CopyCpuFeatureInitDatatoSmram (&mAcpiCpuData.CpuFeatureInitData, &AcpiCpuData->CpuFeatureInitData);
- mCpuFlags.CoreSemaphoreCount = AllocateZeroPool (
- sizeof (UINT32) * CpuStatus->PackageCount *
- CpuStatus->MaxCoreCount * CpuStatus->MaxThreadCount
- );
- ASSERT (mCpuFlags.CoreSemaphoreCount != NULL);
+ CpuStatus = &mAcpiCpuData.CpuFeatureInitData.CpuStatus;
- mCpuFlags.PackageSemaphoreCount = AllocateZeroPool (
- sizeof (UINT32) * CpuStatus->PackageCount *
- CpuStatus->MaxCoreCount * CpuStatus->MaxThreadCount
- );
- ASSERT (mCpuFlags.PackageSemaphoreCount != NULL);
+ mCpuFlags.CoreSemaphoreCount = AllocateZeroPool (
+ sizeof (UINT32) * CpuStatus->PackageCount *
+ CpuStatus->MaxCoreCount * CpuStatus->MaxThreadCount
+ );
+ ASSERT (mCpuFlags.CoreSemaphoreCount != NULL);
- InitializeSpinLock((SPIN_LOCK*) &mCpuFlags.MemoryMappedLock);
+ mCpuFlags.PackageSemaphoreCount = AllocateZeroPool (
+ sizeof (UINT32) * CpuStatus->PackageCount *
+ CpuStatus->MaxCoreCount * CpuStatus->MaxThreadCount
+ );
+ ASSERT (mCpuFlags.PackageSemaphoreCount != NULL);
+
+ InitializeSpinLock((SPIN_LOCK*) &mCpuFlags.MemoryMappedLock);
+ }
}
/**
diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf
index 76b1462996..0e88071c70 100644
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/PiSmmCpuDxeSmm.inf
@@ -4,7 +4,7 @@
# This SMM driver performs SMM initialization, deploy SMM Entry Vector,
# provides CPU specific services in SMM.
#
-# Copyright (c) 2009 - 2019, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2009 - 2021, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -134,6 +134,7 @@
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmCodeAccessCheckEnable ## CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmSyncMode ## CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmShadowStackSize ## SOMETIMES_CONSUMES
+ gUefiCpuPkgTokenSpaceGuid.PcdCpuFeaturesInitOnS3Resume ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiS3Enable ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdPteMemoryEncryptionAddressOrMask ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdNullPointerDetectionPropertyMask ## CONSUMES