OvmfPkg: PlatformPei: reserve SEC/PEI temp RAM for S3 resume

[mirror_edk2.git] / OvmfPkg / PlatformPei / MemDetect.c

diff --git a/OvmfPkg/PlatformPei/MemDetect.c b/OvmfPkg/PlatformPei/MemDetect.c
index daa83a00141795b65a38dec68b00b86735563d8b..d35ee53c77bfcdc2f627309c042384c4846bcda1 100644 (file)
--- a/OvmfPkg/PlatformPei/MemDetect.c
+++ b/OvmfPkg/PlatformPei/MemDetect.c
@@ -1,8 +1,8 @@
 /**@file\r
   Memory Detection for Virtual Machines.\r
 \r
-  Copyright (c) 2006 - 2009, Intel Corporation\r
-  All rights reserved. This program and the accompanying materials\r
+  Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r
+  This program and the accompanying materials\r
   are licensed and made available under the terms and conditions of the BSD License\r
   which accompanies this distribution.  The full text of the license may be found at\r
   http://opensource.org/licenses/bsd-license.php\r
@@ -27,15 +27,17 @@ Module Name:
 #include <Library/DebugLib.h>\r
 #include <Library/HobLib.h>\r
 #include <Library/IoLib.h>\r
+#include <Library/PcdLib.h>\r
 #include <Library/PeimEntryPoint.h>\r
 #include <Library/ResourcePublicationLib.h>\r
+#include <Library/MtrrLib.h>\r
 \r
 #include "Platform.h"\r
 #include "Cmos.h"\r
 \r
-STATIC\r
-UINTN\r
-GetSystemMemorySize (\r
+UINT32\r
+GetSystemMemorySizeBelow4gb (\r
+  VOID\r
   )\r
 {\r
   UINT8 Cmos0x34;\r
@@ -53,34 +55,66 @@ GetSystemMemorySize (
   Cmos0x34 = (UINT8) CmosRead8 (0x34);\r
   Cmos0x35 = (UINT8) CmosRead8 (0x35);\r
 \r
-  return ((((Cmos0x35 << 8) + Cmos0x34) << 16) + SIZE_16MB);\r
+  return (((UINTN)((Cmos0x35 << 8) + Cmos0x34) << 16) + SIZE_16MB);\r
 }\r
 \r
 \r
+STATIC\r
+UINT64\r
+GetSystemMemorySizeAbove4gb (\r
+  )\r
+{\r
+  UINT32 Size;\r
+  UINTN  CmosIndex;\r
+\r
+  //\r
+  // CMOS 0x5b-0x5d specifies the system memory above 4GB MB.\r
+  // * CMOS(0x5d) is the most significant size byte\r
+  // * CMOS(0x5c) is the middle size byte\r
+  // * CMOS(0x5b) is the least significant size byte\r
+  // * The size is specified in 64kb chunks\r
+  //\r
+\r
+  Size = 0;\r
+  for (CmosIndex = 0x5d; CmosIndex >= 0x5b; CmosIndex--) {\r
+    Size = (UINT32) (Size << 8) + (UINT32) CmosRead8 (CmosIndex);\r
+  }\r
+\r
+  return LShiftU64 (Size, 16);\r
+}\r
+\r
 /**\r
-  Peform Memory Detection\r
+  Publish PEI core memory\r
 \r
   @return EFI_SUCCESS     The PEIM initialized successfully.\r
 \r
 **/\r
 EFI_STATUS\r
-MemDetect (\r
+PublishPeiMemory (\r
+  VOID\r
   )\r
 {\r
   EFI_STATUS                  Status;\r
   EFI_PHYSICAL_ADDRESS        MemoryBase;\r
   UINT64                      MemorySize;\r
-  UINT64                      TotalMemorySize;\r
-\r
-  DEBUG ((EFI_D_ERROR, "MemDetect called\n"));\r
-\r
-  //\r
-  // Determine total memory size available\r
-  //\r
-  TotalMemorySize = (UINT64)GetSystemMemorySize ();\r
-\r
-  MemoryBase = 0x800000;\r
-  MemorySize = TotalMemorySize - MemoryBase - 0x100000;\r
+  UINT64                      LowerMemorySize;\r
+\r
+  if (mBootMode == BOOT_ON_S3_RESUME) {\r
+    MemoryBase = PcdGet32 (PcdS3AcpiReservedMemoryBase);\r
+    MemorySize = PcdGet32 (PcdS3AcpiReservedMemorySize);\r
+  } else {\r
+    LowerMemorySize = GetSystemMemorySizeBelow4gb ();\r
+\r
+    //\r
+    // Determine the range of memory to use during PEI\r
+    //\r
+    MemoryBase = PcdGet32 (PcdOvmfDxeMemFvBase) + PcdGet32 (PcdOvmfDxeMemFvSize);\r
+    MemorySize = LowerMemorySize - MemoryBase;\r
+    if (MemorySize > SIZE_64MB) {\r
+      MemoryBase = LowerMemorySize - SIZE_64MB;\r
+      MemorySize = SIZE_64MB;\r
+    }\r
+  }\r
 \r
   //\r
   // Publish this memory to the PEI Core\r
@@ -88,13 +122,86 @@ MemDetect (
   Status = PublishSystemMemory(MemoryBase, MemorySize);\r
   ASSERT_EFI_ERROR (Status);\r
 \r
+  return Status;\r
+}\r
+\r
+\r
+/**\r
+  Peform Memory Detection for QEMU / KVM\r
+\r
+**/\r
+STATIC\r
+VOID\r
+QemuInitializeRam (\r
+  VOID\r
+  )\r
+{\r
+  UINT64                      LowerMemorySize;\r
+  UINT64                      UpperMemorySize;\r
+\r
+  DEBUG ((EFI_D_INFO, "%a called\n", __FUNCTION__));\r
+\r
   //\r
-  // Create memory HOBs\r
+  // Determine total memory size available\r
   //\r
-  AddMemoryBaseSizeHob (MemoryBase, MemorySize);\r
-  AddMemoryRangeHob (0x100000, 0x800000);\r
-  AddMemoryRangeHob (0x000000, 0x0A0000);\r
+  LowerMemorySize = GetSystemMemorySizeBelow4gb ();\r
+  UpperMemorySize = GetSystemMemorySizeAbove4gb ();\r
 \r
-  return EFI_SUCCESS;\r
+  if (mBootMode != BOOT_ON_S3_RESUME) {\r
+    //\r
+    // Create memory HOBs\r
+    //\r
+    AddMemoryRangeHob (BASE_1MB, LowerMemorySize);\r
+    AddMemoryRangeHob (0, BASE_512KB + BASE_128KB);\r
+  }\r
+\r
+  MtrrSetMemoryAttribute (BASE_1MB, LowerMemorySize - BASE_1MB, CacheWriteBack);\r
+\r
+  MtrrSetMemoryAttribute (0, BASE_512KB + BASE_128KB, CacheWriteBack);\r
+\r
+  if (UpperMemorySize != 0) {\r
+    if (mBootMode != BOOT_ON_S3_RESUME) {\r
+      AddUntestedMemoryBaseSizeHob (BASE_4GB, UpperMemorySize);\r
+    }\r
+\r
+    MtrrSetMemoryAttribute (BASE_4GB, UpperMemorySize, CacheWriteBack);\r
+  }\r
 }\r
 \r
+/**\r
+  Publish system RAM and reserve memory regions\r
+\r
+**/\r
+VOID\r
+InitializeRamRegions (\r
+  VOID\r
+  )\r
+{\r
+  if (!mXen) {\r
+    QemuInitializeRam ();\r
+  } else {\r
+    XenPublishRamRegions ();\r
+  }\r
+\r
+  if (mS3Supported && mBootMode != BOOT_ON_S3_RESUME) {\r
+    //\r
+    // This is the memory range that will be used for PEI on S3 resume\r
+    //\r
+    BuildMemoryAllocationHob (\r
+      (EFI_PHYSICAL_ADDRESS)(UINTN) PcdGet32 (PcdS3AcpiReservedMemoryBase),\r
+      (UINT64)(UINTN) PcdGet32 (PcdS3AcpiReservedMemorySize),\r
+      EfiACPIMemoryNVS\r
+      );\r
+\r
+    //\r
+    // Cover the initial RAM area used as stack and temporary PEI heap.\r
+    //\r
+    // This is reserved as ACPI NVS so it can be used on S3 resume.\r
+    //\r
+    BuildMemoryAllocationHob (\r
+      PcdGet32 (PcdOvmfSecPeiTempRamBase),\r
+      PcdGet32 (PcdOvmfSecPeiTempRamSize),\r
+      EfiACPIMemoryNVS\r
+      );\r
+  }\r
+}\r