X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OvmfPkg%2FPlatformPei%2FMemDetect.c;h=11c79687c435da5fcccaa962660b5119540aba39;hp=29df5370b05e68ca00c0ebd98239c22778991876;hb=8e54500fd48b56d8cf660c18656e10fe89ee3af7;hpb=7cdba6346b97562dad9809297cd7a32979a5a1d8

diff --git a/OvmfPkg/PlatformPei/MemDetect.c b/OvmfPkg/PlatformPei/MemDetect.c
index 29df5370b0..11c79687c4 100644
--- a/OvmfPkg/PlatformPei/MemDetect.c
+++ b/OvmfPkg/PlatformPei/MemDetect.c
@@ -99,16 +99,21 @@ PublishPeiMemory (
   UINT64                      MemorySize;
   UINT64                      LowerMemorySize;
 
-  LowerMemorySize = GetSystemMemorySizeBelow4gb ();
-
-  //
-  // Determine the range of memory to use during PEI
-  //
-  MemoryBase = PcdGet32 (PcdOvmfDxeMemFvBase) + PcdGet32 (PcdOvmfDxeMemFvSize);
-  MemorySize = LowerMemorySize - MemoryBase;
-  if (MemorySize > SIZE_64MB) {
-    MemoryBase = LowerMemorySize - SIZE_64MB;
-    MemorySize = SIZE_64MB;
+  if (mBootMode == BOOT_ON_S3_RESUME) {
+    MemoryBase = PcdGet32 (PcdS3AcpiReservedMemoryBase);
+    MemorySize = PcdGet32 (PcdS3AcpiReservedMemorySize);
+  } else {
+    LowerMemorySize = GetSystemMemorySizeBelow4gb ();
+
+    //
+    // Determine the range of memory to use during PEI
+    //
+    MemoryBase = PcdGet32 (PcdOvmfDxeMemFvBase) + PcdGet32 (PcdOvmfDxeMemFvSize);
+    MemorySize = LowerMemorySize - MemoryBase;
+    if (MemorySize > SIZE_64MB) {
+      MemoryBase = LowerMemorySize - SIZE_64MB;
+      MemorySize = SIZE_64MB;
+    }
   }
 
   //
@@ -173,4 +178,15 @@ InitializeRamRegions (
   } else {
     XenPublishRamRegions ();
   }
+
+  if (mS3Supported && mBootMode != BOOT_ON_S3_RESUME) {
+    //
+    // This is the memory range that will be used for PEI on S3 resume
+    //
+    BuildMemoryAllocationHob (
+      (EFI_PHYSICAL_ADDRESS)(UINTN) PcdGet32 (PcdS3AcpiReservedMemoryBase),
+      (UINT64)(UINTN) PcdGet32 (PcdS3AcpiReservedMemorySize),
+      EfiACPIMemoryNVS
+      );
+  }
 }