/**@file\r
Xen Platform PEI support\r
\r
- Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>\r
+ Copyright (c) 2006 - 2014, 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 <Guid/XenInfo.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
+ Returns E820 map provided by Xen\r
+\r
+ @param Entries Pointer to E820 map\r
+ @param Count Number of entries\r
+\r
+ @return EFI_STATUS\r
+**/\r
+EFI_STATUS\r
+XenGetE820Map (\r
+ EFI_E820_ENTRY64 **Entries,\r
+ UINT32 *Count\r
+ )\r
+{\r
+ EFI_XEN_OVMF_INFO *Info =\r
+ (EFI_XEN_OVMF_INFO *)(UINTN) OVMF_INFO_PHYSICAL_ADDRESS;\r
+\r
+ if (AsciiStrCmp ((CHAR8 *) Info->Signature, "XenHVMOVMF")) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
+ ASSERT (Info->E820 < MAX_ADDRESS);\r
+ *Entries = (EFI_E820_ENTRY64 *)(UINTN) Info->E820;\r
+ *Count = Info->E820EntriesCount;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
\r
/**\r
Connects to the Hypervisor.\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
- return XenLeaf;\r
+ mXen = TRUE;\r
+ return TRUE;\r
}\r
}\r
\r
- return 0;\r
+ mXenLeaf = 0;\r
+ return FALSE;\r
}\r
\r
/**\r
**/\r
EFI_STATUS\r
InitializeXen (\r
- UINT32 XenLeaf\r
+ VOID\r
)\r
{\r
- XenConnect (XenLeaf);\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