/**@file\r
Xen Platform PEI support\r
\r
- Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r
Copyright (c) 2011, Andrei Warkentin <andreiw@motorola.com>\r
\r
This program and the accompanying materials\r
#include <Library/MemoryAllocationLib.h>\r
#include <Library/PcdLib.h>\r
#include <Guid/XenInfo.h>\r
+#include <IndustryStandard/E820.h>\r
+#include <Library/ResourcePublicationLib.h>\r
+#include <Library/MtrrLib.h>\r
\r
#include "Platform.h"\r
#include "Xen.h"\r
\r
BOOLEAN mXen = FALSE;\r
\r
+STATIC UINT32 mXenLeaf = 0;\r
+\r
EFI_XEN_INFO mXenInfo;\r
\r
/**\r
/**\r
Figures out if we are running inside Xen HVM.\r
\r
- @return UINT32 CPUID index used to connect to HV.\r
+ @retval TRUE Xen was detected\r
+ @retval FALSE Xen was not detected\r
\r
**/\r
-UINT32\r
+BOOLEAN\r
XenDetect (\r
VOID\r
)\r
{\r
-\r
- UINT32 XenLeaf;\r
UINT8 Signature[13];\r
\r
- for (XenLeaf = 0x40000000; XenLeaf < 0x40010000; XenLeaf += 0x100) {\r
- AsmCpuid (XenLeaf, NULL, (UINT32 *) &Signature[0],\r
+ if (mXenLeaf != 0) {\r
+ return TRUE;\r
+ }\r
+\r
+ Signature[12] = '\0';\r
+ for (mXenLeaf = 0x40000000; mXenLeaf < 0x40010000; mXenLeaf += 0x100) {\r
+ AsmCpuid (mXenLeaf,\r
+ NULL,\r
+ (UINT32 *) &Signature[0],\r
(UINT32 *) &Signature[4],\r
(UINT32 *) &Signature[8]);\r
- Signature[12] = '\0';\r
\r
if (!AsciiStrCmp ((CHAR8 *) Signature, "XenVMMXenVMM")) {\r
mXen = TRUE;\r
- return XenLeaf;\r
+ return TRUE;\r
}\r
}\r
\r
- return 0;\r
+ mXenLeaf = 0;\r
+ return FALSE;\r
+}\r
+\r
+\r
+VOID\r
+XenPublishRamRegions (\r
+ VOID\r
+ )\r
+{\r
+ EFI_E820_ENTRY64 *E820Map;\r
+ UINT32 E820EntriesCount;\r
+ EFI_STATUS Status;\r
+\r
+ if (!mXen) {\r
+ return;\r
+ }\r
+\r
+ DEBUG ((EFI_D_INFO, "Using memory map provided by Xen\n"));\r
+\r
+ //\r
+ // Parse RAM in E820 map\r
+ //\r
+ E820EntriesCount = 0;\r
+ Status = XenGetE820Map (&E820Map, &E820EntriesCount);\r
+\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
+ if (E820EntriesCount > 0) {\r
+ EFI_E820_ENTRY64 *Entry;\r
+ UINT32 Loop;\r
+\r
+ for (Loop = 0; Loop < E820EntriesCount; Loop++) {\r
+ Entry = E820Map + Loop;\r
+\r
+ //\r
+ // Only care about RAM\r
+ //\r
+ if (Entry->Type != EfiAcpiAddressRangeMemory) {\r
+ continue;\r
+ }\r
+\r
+ AddMemoryBaseSizeHob (Entry->BaseAddr, Entry->Length);\r
+\r
+ MtrrSetMemoryAttribute (Entry->BaseAddr, Entry->Length, CacheWriteBack);\r
+ }\r
+ }\r
}\r
\r
+\r
/**\r
Perform Xen PEI initialization.\r
\r
**/\r
EFI_STATUS\r
InitializeXen (\r
- UINT32 XenLeaf\r
+ VOID\r
)\r
{\r
- XenConnect (XenLeaf);\r
+ RETURN_STATUS PcdStatus;\r
+\r
+ if (mXenLeaf == 0) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
+ XenConnect (mXenLeaf);\r
\r
//\r
// Reserve away HVMLOADER reserved memory [0xFC000000,0xFD000000).\r
// This needs to match HVMLOADER RESERVED_MEMBASE/RESERVED_MEMSIZE.\r
//\r
- AddReservedMemoryBaseSizeHob (0xFC000000, 0x1000000);\r
+ AddReservedMemoryBaseSizeHob (0xFC000000, 0x1000000, FALSE);\r
+\r
+ PcdStatus = PcdSetBoolS (PcdPciDisableBusEnumeration, TRUE);\r
+ ASSERT_RETURN_ERROR (PcdStatus);\r
\r
return EFI_SUCCESS;\r
}\r