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| author | Wu, Jiaxin <jiaxin.wu@intel.com> | 2022-07-29 14:25:55 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-08-31 04:23:55 +0000 |
| commit | 76ec17526b7ebd0893f8e2e27ee4e4baf017eeef (patch) | |
| tree | 68a28e839974e6bc02a21ce34a5efde8045794bb /UefiCpuPkg/UefiCpuPkg.dec | |
| parent | 367604b2f49f1b7517756a4ecab426f5308ba7fb (diff) | |
| download | edk2-76ec17526b7ebd0893f8e2e27ee4e4baf017eeef.tar.gz | |
UefiCpuPkg: Add PCD to control SMRR enable & SmmFeatureControl support
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3962
Two SMM variables (mSmrrSupported & mSmmFeatureControlSupported) are global
variables, they control whether the SMRR and SMM Feature Control MSR will
be restored respectively.
To avoid the TOCTOU, add PCD to control SMRR & SmmFeatureControl enable.
Cc: Eric Dong <eric.dong@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Diffstat (limited to 'UefiCpuPkg/UefiCpuPkg.dec')
| -rw-r--r-- | UefiCpuPkg/UefiCpuPkg.dec | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/UefiCpuPkg/UefiCpuPkg.dec b/UefiCpuPkg/UefiCpuPkg.dec index 4fe79cecbf..718323d904 100644 --- a/UefiCpuPkg/UefiCpuPkg.dec +++ b/UefiCpuPkg/UefiCpuPkg.dec @@ -158,6 +158,18 @@ # @Prompt Lock SMM Feature Control MSR.
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmFeatureControlMsrLock|TRUE|BOOLEAN|0x3213210B
+ ## Indicates if SMRR will be enabled.<BR><BR>
+ # TRUE - SMRR will be enabled.<BR>
+ # FALSE - SMRR will not be enabled.<BR>
+ # @Prompt Enable SMRR.
+ gUefiCpuPkgTokenSpaceGuid.PcdSmrrEnable|TRUE|BOOLEAN|0x3213210D
+
+ ## Indicates if SmmFeatureControl will be enabled.<BR><BR>
+ # TRUE - SmmFeatureControl will be enabled.<BR>
+ # FALSE - SmmFeatureControl will not be enabled.<BR>
+ # @Prompt Support SmmFeatureControl.
+ gUefiCpuPkgTokenSpaceGuid.PcdSmmFeatureControlEnable|TRUE|BOOLEAN|0x32132110
+
[PcdsFixedAtBuild]
## List of exception vectors which need switching stack.
# This PCD will only take into effect if PcdCpuStackGuard is enabled.
|