PcdVTdSupportAbortDmaMode is used to enable/disable VTd Abort DMA Mode.
Signed-off-by: Sheng Wei <w.sh...@intel.com>
Cc: Ray Ni <ray...@intel.com>
Cc: Rangasai V Chaganty <rangasai.v.chaga...@intel.com>
Cc: Jenny Huang <jenny.hu...@intel.com>
Cc: Robert Kowalewski <robert.kowalew...@intel.com>
---
.../Feature/VTd/IntelVTdDmarPei/IntelVTdDmar.c | 7 +++++--
.../Feature/VTd/IntelVTdDmarPei/IntelVTdDmarPei.inf | 3 ++-
Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec | 6 ++++++
3 files changed, 13 insertions(+), 3 deletions(-)
diff --git
a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmar.c
b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmar.c
index b4c44d87..18c22316 100644
--- a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmar.c
+++ b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmar.c
@@ -1,6 +1,6 @@
/** @file
- Copyright (c) 2020 - 2021, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2020 - 2022, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
@@ -570,10 +570,12 @@ EnableVTdTranslationProtectionBlockDma (
DEBUG ((DEBUG_INFO, "EnableVTdTranslationProtectionBlockDma - 0x%08x\n",
VtdUnitBaseAddress));
+ DEBUG ((DEBUG_INFO, "PcdVTdSupportAbortDmaMode : %d\n", FeaturePcdGet
(PcdVTdSupportAbortDmaMode)));
+
ECapReg.Uint64 = MmioRead64 (VtdUnitBaseAddress + R_ECAP_REG);
DEBUG ((DEBUG_INFO, "ECapReg : 0%016lx\n", ECapReg.Uint64));
- if (ECapReg.Bits.ADMS == 1) {
+ if ((ECapReg.Bits.ADMS == 1) && FeaturePcdGet (PcdVTdSupportAbortDmaMode)) {
//
// Use Abort DMA Mode
//
@@ -594,6 +596,7 @@ EnableVTdTranslationProtectionBlockDma (
ASSERT (FALSE);
return EFI_DEVICE_ERROR;
}
+ DEBUG ((DEBUG_INFO, "Block All DMA by TE.\n"));
Status = EnableDmarPreMem (VtdUnitBaseAddress, (UINT64) (*RootEntryTable));
}
diff --git
a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmarPei.inf
b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmarPei.inf
index b97ff900..473665e9 100644
---
a/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmarPei.inf
+++
b/Silicon/Intel/IntelSiliconPkg/Feature/VTd/IntelVTdDmarPei/IntelVTdDmarPei.inf
@@ -4,7 +4,7 @@
# This driver initializes VTd engine based upon EDKII_VTD_INFO_PPI
# and provide DMA protection in PEI.
#
-# Copyright (c) 2020, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
##
@@ -55,6 +55,7 @@
gIntelSiliconPkgTokenSpaceGuid.PcdVTdPolicyPropertyMask ## CONSUMES
gIntelSiliconPkgTokenSpaceGuid.PcdVTdPeiDmaBufferSize ## CONSUMES
gIntelSiliconPkgTokenSpaceGuid.PcdVTdPeiDmaBufferSizeS3 ## CONSUMES
+ gIntelSiliconPkgTokenSpaceGuid.PcdVTdSupportAbortDmaMode ## CONSUMES
[Depex]
gEfiPeiMasterBootModePpiGuid AND
diff --git a/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec
b/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec
index e5b785ae..92d7fa3b 100644
--- a/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec
+++ b/Silicon/Intel/IntelSiliconPkg/IntelSiliconPkg.dec
@@ -172,3 +172,9 @@
# @Prompt The VTd PEI DMA buffer size for S3.
gIntelSiliconPkgTokenSpaceGuid.PcdVTdPeiDmaBufferSizeS3|0x00200000|UINT32|0x00000004
+ ## Indicates if VTd Abort DMA Mode is supported.<BR><BR>
+ # TRUE - Support VTd abort DMA mode.
+ # FALSE - Not support VTd abort DMA mode.
+ # @Prompt VTd abort DMA mode support.
+
gIntelSiliconPkgTokenSpaceGuid.PcdVTdSupportAbortDmaMode|TRUE|BOOLEAN|0x0000000C
+
--
2.26.2.windows.1
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