diff options
| -rw-r--r-- | Platform/Intel/KabylakeOpenBoardPkg/FspWrapper/Library/PeiSiliconPolicyUpdateLibFsp/PeiFspMiscUpdUpdateLib.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Platform/Intel/KabylakeOpenBoardPkg/FspWrapper/Library/PeiSiliconPolicyUpdateLibFsp/PeiFspMiscUpdUpdateLib.c b/Platform/Intel/KabylakeOpenBoardPkg/FspWrapper/Library/PeiSiliconPolicyUpdateLibFsp/PeiFspMiscUpdUpdateLib.c index 0f7c6acb59..57a1846ad2 100644 --- a/Platform/Intel/KabylakeOpenBoardPkg/FspWrapper/Library/PeiSiliconPolicyUpdateLibFsp/PeiFspMiscUpdUpdateLib.c +++ b/Platform/Intel/KabylakeOpenBoardPkg/FspWrapper/Library/PeiSiliconPolicyUpdateLibFsp/PeiFspMiscUpdUpdateLib.c @@ -25,7 +25,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #include <Library/MemoryAllocationLib.h>
#include <Library/DebugLib.h>
#include <Library/DebugPrintErrorLevelLib.h>
+#include <Library/PciLib.h>
#include <Guid/MemoryOverwriteControl.h>
+#include <PchAccess.h>
/**
Performs FSP Misc UPD initialization.
@@ -61,6 +63,14 @@ PeiFspMiscUpdUpdatePreMem ( DEBUG ((DEBUG_INFO, "MemoryConfig Size - 0x%x\n", VariableSize));
FspmUpd->FspmArchUpd.NvsBufferPtr = MemorySavedData;
+ if (FspmUpd->FspmArchUpd.NvsBufferPtr != NULL) {
+ //
+ // Set the DISB bit in PCH (DRAM Initialization Scratchpad Bit - GEN_PMCON_A[23]),
+ // after memory Data is saved to NVRAM.
+ //
+ PciOr32 ((UINTN)PCI_LIB_ADDRESS (0, PCI_DEVICE_NUMBER_PCH_PMC, PCI_FUNCTION_NUMBER_PCH_PMC, R_PCH_PMC_GEN_PMCON_A), B_PCH_PMC_GEN_PMCON_A_DISB);
+ }
+
//
// MOR
//
|