OvmfPkg/PlatformPei: Skip various items for S3 resume

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

diff --git a/OvmfPkg/PlatformPei/Platform.c b/OvmfPkg/PlatformPei/Platform.c
index 743044d29eb4ca5a260b46c5c34228338b394558..11b4cb7a14800aa75e3f69ba6977092546dfb331 100644 (file)
--- a/OvmfPkg/PlatformPei/Platform.c
+++ b/OvmfPkg/PlatformPei/Platform.c
@@ -30,6 +30,7 @@
 #include <Library/PciLib.h>\r
 #include <Library/PeimEntryPoint.h>\r
 #include <Library/PeiServicesLib.h>\r
+#include <Library/QemuFwCfgLib.h>\r
 #include <Library/ResourcePublicationLib.h>\r
 #include <Guid/MemoryTypeInformation.h>\r
 #include <Ppi/MasterBootMode.h>\r
@@ -59,6 +60,11 @@ EFI_PEI_PPI_DESCRIPTOR   mPpiBootMode[] = {
 };\r
 \r
 \r
+EFI_BOOT_MODE mBootMode = BOOT_WITH_FULL_CONFIGURATION;\r
+\r
+BOOLEAN mS3Supported = FALSE;\r
+\r
+\r
 VOID\r
 AddIoMemoryBaseSizeHob (\r
   EFI_PHYSICAL_ADDRESS        MemoryBase,\r
@@ -164,7 +170,7 @@ AddUntestedMemoryRangeHob (
 }\r
 \r
 VOID\r
-XenMemMapInitialization (\r
+MemMapInitialization (\r
   VOID\r
   )\r
 {\r
@@ -193,55 +199,27 @@ XenMemMapInitialization (
   //\r
   AddIoMemoryRangeHob (0x0A0000, BASE_1MB);\r
 \r
-  XenPublishRamRegions ();\r
-}\r
-\r
-\r
-VOID\r
-MemMapInitialization (\r
-  EFI_PHYSICAL_ADDRESS  TopOfMemory\r
-  )\r
-{\r
-  //\r
-  // Create Memory Type Information HOB\r
-  //\r
-  BuildGuidDataHob (\r
-    &gEfiMemoryTypeInformationGuid,\r
-    mDefaultMemoryTypeInformation,\r
-    sizeof(mDefaultMemoryTypeInformation)\r
-    );\r
-\r
-  //\r
-  // Add PCI IO Port space available for PCI resource allocations.\r
-  //\r
-  BuildResourceDescriptorHob (\r
-    EFI_RESOURCE_IO,\r
-    EFI_RESOURCE_ATTRIBUTE_PRESENT     |\r
-    EFI_RESOURCE_ATTRIBUTE_INITIALIZED,\r
-    0xC000,\r
-    0x4000\r
-    );\r
-\r
-  //\r
-  // Video memory + Legacy BIOS region\r
-  //\r
-  AddIoMemoryRangeHob (0x0A0000, BASE_1MB);\r
+  if (!mXen) {\r
+    UINT32  TopOfLowRam;\r
+    TopOfLowRam = GetSystemMemorySizeBelow4gb ();\r
 \r
-  //\r
-  // address       purpose   size\r
-  // ------------  --------  -------------------------\r
-  // max(top, 2g)  PCI MMIO  0xFC000000 - max(top, 2g)\r
-  // 0xFC000000    gap                           44 MB\r
-  // 0xFEC00000    IO-APIC                        4 KB\r
-  // 0xFEC01000    gap                         1020 KB\r
-  // 0xFED00000    HPET                           1 KB\r
-  // 0xFED00400    gap                         1023 KB\r
-  // 0xFEE00000    LAPIC                          1 MB\r
-  //\r
-  AddIoMemoryRangeHob (TopOfMemory < BASE_2GB ? BASE_2GB : TopOfMemory, 0xFC000000);\r
-  AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB);\r
-  AddIoMemoryBaseSizeHob (0xFED00000, SIZE_1KB);\r
-  AddIoMemoryBaseSizeHob (PcdGet32(PcdCpuLocalApicBaseAddress), SIZE_1MB);\r
+    //\r
+    // address       purpose   size\r
+    // ------------  --------  -------------------------\r
+    // max(top, 2g)  PCI MMIO  0xFC000000 - max(top, 2g)\r
+    // 0xFC000000    gap                           44 MB\r
+    // 0xFEC00000    IO-APIC                        4 KB\r
+    // 0xFEC01000    gap                         1020 KB\r
+    // 0xFED00000    HPET                           1 KB\r
+    // 0xFED00400    gap                         1023 KB\r
+    // 0xFEE00000    LAPIC                          1 MB\r
+    //\r
+    AddIoMemoryRangeHob (TopOfLowRam < BASE_2GB ?\r
+                         BASE_2GB : TopOfLowRam, 0xFC000000);\r
+    AddIoMemoryBaseSizeHob (0xFEC00000, SIZE_4KB);\r
+    AddIoMemoryBaseSizeHob (0xFED00000, SIZE_1KB);\r
+    AddIoMemoryBaseSizeHob (PcdGet32(PcdCpuLocalApicBaseAddress), SIZE_1MB);\r
+  }\r
 }\r
 \r
 \r
@@ -294,11 +272,16 @@ MiscInitialization (
 \r
 VOID\r
 BootModeInitialization (\r
+  VOID\r
   )\r
 {\r
-  EFI_STATUS Status;\r
+  EFI_STATUS    Status;\r
 \r
-  Status = PeiServicesSetBootMode (BOOT_WITH_FULL_CONFIGURATION);\r
+  if (CmosRead8 (0xF) == 0xFE) {\r
+    mBootMode = BOOT_ON_S3_RESUME;\r
+  }\r
+\r
+  Status = PeiServicesSetBootMode (mBootMode);\r
   ASSERT_EFI_ERROR (Status);\r
 \r
   Status = PeiServicesInstallPpi (mPpiBootMode);\r
@@ -370,39 +353,34 @@ InitializePlatform (
   IN CONST EFI_PEI_SERVICES     **PeiServices\r
   )\r
 {\r
-  EFI_PHYSICAL_ADDRESS  TopOfMemory;\r
-\r
-  TopOfMemory = 0;\r
-\r
   DEBUG ((EFI_D_ERROR, "Platform PEIM Loaded\n"));\r
 \r
   DebugDumpCmos ();\r
 \r
   XenDetect ();\r
 \r
+  if (QemuFwCfgS3Enabled ()) {\r
+    DEBUG ((EFI_D_INFO, "S3 support was detected on QEMU\n"));\r
+    mS3Supported = TRUE;\r
+  }\r
+\r
   BootModeInitialization ();\r
 \r
   PublishPeiMemory ();\r
 \r
-  if (mXen) {\r
-    PcdSetBool (PcdPciDisableBusEnumeration, TRUE);\r
-  } else {\r
-    TopOfMemory = MemDetect ();\r
-  }\r
+  InitializeRamRegions ();\r
 \r
   if (mXen) {\r
     DEBUG ((EFI_D_INFO, "Xen was detected\n"));\r
     InitializeXen ();\r
   }\r
 \r
-  ReserveEmuVariableNvStore ();\r
+  if (mBootMode != BOOT_ON_S3_RESUME) {\r
+    ReserveEmuVariableNvStore ();\r
 \r
-  PeiFvInitialization ();\r
+    PeiFvInitialization ();\r
 \r
-  if (mXen) {\r
-    XenMemMapInitialization ();\r
-  } else {\r
-    MemMapInitialization (TopOfMemory);\r
+    MemMapInitialization ();\r
   }\r
 \r
   MiscInitialization ();\r