[edk2-devel] [PATCH v4 2/2] IntelSiliconPkg/VTd: Add PCD flag for select pre-boot DMA protection Driver
Sheng Wei
w.sheng at intel.com
Wed Jan 6 06:31:18 UTC 2021
gIntelSiliconPkgTokenSpaceGuid.PcdVtdDmarPeiEnable is added for select
pre-boot DMA protection driver in PEI phase.
IntelVTdPmrPei driver is used to do the pre-boot DMA protection by PMR.
IntelVTdDmarPei driver is used to do the pre-boot DMA protection by DMAR.
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3095
Signed-off-by: Sheng Wei <w.sheng at intel.com>
Cc: Ray Ni <ray.ni at intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaganty at intel.com>
Cc: Jiewen Yao <jiewen.yao at intel.com>
Cc: Jenny Huang <jenny.huang at intel.com>
Cc: Feng Roger <roger.feng at intel.com>
Reviewed-by: Jenny Huang <jenny.huang at intel.com>
---
Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec | 7 +++++++
Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dsc | 4 ++++
2 files changed, 11 insertions(+)
diff --git a/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec b/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec
index 4a2cbca5..b386080a 100644
--- a/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec
+++ b/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec
@@ -84,6 +84,12 @@
# @Prompt Shadow all microcode update patches.
gIntelSiliconPkgTokenSpaceGuid.PcdShadowAllMicrocode|FALSE|BOOLEAN|0x00000006
+ ## Declares the VTd PEI driver to protect DMA.<BR><BR>
+ # TRUE: Use DMAR to protect DMA at PEI phase
+ # FALSE: Use PMR to protect DMA at PEI phase
+ # @Prompt The VTd PEI driver to protect DMA.
+ gIntelSiliconPkgTokenSpaceGuid.PcdVtdDmarPeiEnable|FALSE|BOOLEAN|0x00000007
+
[PcdsFixedAtBuild, PcdsPatchableInModule]
## Error code for VTd error.<BR><BR>
# EDKII_ERROR_CODE_VTD_ERROR = (EFI_IO_BUS_UNSPECIFIED | (EFI_OEM_SPECIFIC | 0x00000000)) = 0x02008000<BR>
@@ -121,3 +127,4 @@
# @Prompt The VTd PEI DMA buffer size for S3.
gIntelSiliconPkgTokenSpaceGuid.PcdVTdPeiDmaBufferSizeS3|0x00200000|UINT32|0x00000004
+
diff --git a/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dsc b/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dsc
index 029b9156..6feb5a99 100644
--- a/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dsc
+++ b/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dsc
@@ -80,7 +80,11 @@
IntelSiliconPkg/Feature/PcieSecurity/IntelPciDeviceSecurityDxe/IntelPciDeviceSecurityDxe.inf
IntelSiliconPkg/Feature/PcieSecurity/SamplePlatformDevicePolicyDxe/SamplePlatformDevicePolicyDxe.inf
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/IntelVTdDxe.inf
+!if gIntelSiliconPkgTokenSpaceGuid.PcdVtdDmarPeiEnable == TRUE
+ IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmarPei.inf
+!else
IntelSiliconPkg/Feature/VTd/IntelVTdPmrPei/IntelVTdPmrPei.inf
+!endif
IntelSiliconPkg/Feature/VTd/PlatformVTdSampleDxe/PlatformVTdSampleDxe.inf
IntelSiliconPkg/Feature/VTd/PlatformVTdInfoSamplePei/PlatformVTdInfoSamplePei.inf
IntelSiliconPkg/Feature/Capsule/MicrocodeUpdateDxe/MicrocodeUpdateDxe.inf
--
2.16.2.windows.1
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