UefiCpuPkg: Disable MTRR programming for UefiPayloadPkg

The MTRRs have already been programmed by FSB. Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
2020-09-08 09:40:41 +02:00
parent 0bef9ccd43
commit 1d70aa7a9b
5 changed files with 17 additions and 3 deletions
--- a/UefiCpuPkg/Library/MtrrLib/MtrrLib.c
+++ b/UefiCpuPkg/Library/MtrrLib/MtrrLib.c
@@ -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
  //