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IntelSiliconPkg IntelVTdDxe: Use ACPI table event to get DMAR table

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Use ACPI table event to get DMAR table instead of using ACPI SDT
notification as ACPI SDT is optional and the default value of
PcdInstallAcpiSdtProtocol is FALSE in MdeModulePkg.dec.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Star Zeng
2017-10-25 17:23:03 +08:00
parent 3909c4a193
commit f6f486e7bf
4 changed files with 46 additions and 30 deletions
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8
IntelSiliconPkg/Feature/VTd/IntelVTdDxe/DmarAcpiTable.c
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@@ -989,6 +989,10 @@ GetDmarAcpiTable (
VOID *AcpiTable;
EFI_STATUS Status;
if (mAcpiDmarTable != NULL) {
return EFI_SUCCESS;
}
AcpiTable = NULL;
Status = EfiGetSystemConfigurationTable (
&gEfiAcpi20TableGuid,
@@ -1006,10 +1010,10 @@ GetDmarAcpiTable (
(EFI_ACPI_2_0_ROOT_SYSTEM_DESCRIPTION_POINTER *)AcpiTable,
EFI_ACPI_4_0_DMA_REMAPPING_TABLE_SIGNATURE
);
DEBUG ((DEBUG_INFO,"DMAR Table - 0x%08x\n", mAcpiDmarTable));
if (mAcpiDmarTable == NULL) {
return EFI_UNSUPPORTED;
return EFI_NOT_FOUND;
}
DEBUG ((DEBUG_INFO,"DMAR Table - 0x%08x\n", mAcpiDmarTable));
VtdDumpDmarTable();
return EFI_SUCCESS;