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UefiCpuPkg: Disable MTRR programming for UefiPayloadPkg

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The MTRRs have already been programmed by FSB.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
This commit is contained in:
Patrick Rudolph
2020-09-08 09:40:41 +02:00
committed by Tim Crawford
parent 0bef9ccd43
commit 1d70aa7a9b
5 changed files with 17 additions and 3 deletions
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4
UefiCpuPkg/Library/MtrrLib/MtrrLib.c
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@@ -2680,6 +2680,10 @@ IsMtrrSupported (
CPUID_VERSION_INFO_EDX Edx;
MSR_IA32_MTRRCAP_REGISTER MtrrCap;
if (PcdGetBool(PcdCpuDisableMtrrProgramming)) {
return FALSE;
}
//
// Check CPUID(1).EDX[12] for MTRR capability
//

2
UefiCpuPkg/Library/MtrrLib/MtrrLib.inf
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@@ -37,4 +37,4 @@
[Pcd]
gUefiCpuPkgTokenSpaceGuid.PcdCpuNumberOfReservedVariableMtrrs ## SOMETIMES_CONSUMES
gUefiCpuPkgTokenSpaceGuid.PcdCpuDisableMtrrProgramming ## CONSUMES

4
UefiCpuPkg/UefiCpuPkg.dec
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@@ -217,6 +217,10 @@
# @Prompt SMM Code Access Check.
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmCodeAccessCheckEnable|TRUE|BOOLEAN|0x60000013
## Disables MTRR programming in case it's already programmed by FSB.
# @Prompt Disable MTRR programming.
gUefiCpuPkgTokenSpaceGuid.PcdCpuDisableMtrrProgramming|FALSE|BOOLEAN|0x00000017
## Specifies the number of variable MTRRs reserved for OS use. The default number of
# MTRRs reserved for OS use is 2.
# @Prompt Number of reserved variable MTRRs.

8
UefiCpuPkg/UefiCpuPkg.uni
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@@ -140,9 +140,13 @@
#string STR_gUefiCpuPkgTokenSpaceGuid_PcdCpuHotPlugDataAddress_HELP #language en-US "Contains the pointer to a CPU Hot Plug Data structure if CPU hot-plug is supported."
#string STR_gUefiCpuPkgTokenSpaceGuid_PcdCpuNumberOfReservedVariableMtrrs_PROMPT #language en-US "Number of reserved variable MTRRs"
#string STR_gUefiCpuPkgTokenSpaceGuid_PcdCpuDisableMtrrProgramming_PROMPT #language en-US "Number of reserved variable MTRRs"
#string STR_gUefiCpuPkgTokenSpaceGuid_PcdCpuNumberOfReservedVariableMtrrs_HELP #language en-US "Specifies the number of variable MTRRs reserved for OS use."
#string STR_gUefiCpuPkgTokenSpaceGuid_PcdCpuDisableMtrrProgramming_HELP #language en-US "Specifies the number of variable MTRRs reserved for OS use."
#string STR_gUefiCpuPkgTokenSpaceGuid_PcdCpuNumberOfReservedVariableMtrrs_PROMPT #language en-US "Disable MTRR programming."
#string STR_gUefiCpuPkgTokenSpaceGuid_PcdCpuNumberOfReservedVariableMtrrs_HELP #language en-US "Disables MTRR programming in case it's already programmed by FSB."
#string STR_gUefiCpuPkgTokenSpaceGuid_PcdCpuApLoopMode_PROMPT #language en-US "The AP wait loop state"