--- /dev/null
+/*++\r
+\r
+Copyright (c) 2006, Intel Corporation \r
+All rights reserved. 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
+ \r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
+\r
+Module Name:\r
+\r
+ Hob.c\r
+\r
+Abstract:\r
+\r
+ EFI PEI Core HOB services\r
+\r
+--*/\r
+\r
+//\r
+// Include common header file for this module.\r
+//\r
+#include "CommonHeader.h"\r
+\r
+#include <PeiMain.h>\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+PeiGetHobList (\r
+ IN EFI_PEI_SERVICES **PeiServices,\r
+ IN OUT VOID **HobList\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Gets the pointer to the HOB List.\r
+\r
+Arguments:\r
+\r
+ PeiServices - The PEI core services table.\r
+ HobList - Pointer to the HOB List.\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS - Get the pointer of HOB List\r
+ EFI_NOT_AVAILABLE_YET - the HOB List is not yet published\r
+ EFI_INVALID_PARAMETER - HobList is NULL (in debug mode)\r
+ \r
+--*/\r
+{\r
+ PEI_CORE_INSTANCE *PrivateData;\r
+\r
+ \r
+ //\r
+ // Only check this parameter in debug mode\r
+ //\r
+ \r
+ DEBUG_CODE_BEGIN (); \r
+ if (HobList == NULL) {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
+ DEBUG_CODE_END ();\r
+ \r
+ PrivateData = PEI_CORE_INSTANCE_FROM_PS_THIS(PeiServices);\r
+\r
+ *HobList = PrivateData->HobList.Raw;\r
+\r
+\r
+ return EFI_SUCCESS; \r
+}\r
+\r
+\r
+EFI_STATUS\r
+EFIAPI\r
+PeiCreateHob (\r
+ IN EFI_PEI_SERVICES **PeiServices,\r
+ IN UINT16 Type,\r
+ IN UINT16 Length,\r
+ IN OUT VOID **Hob\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Add a new HOB to the HOB List.\r
+\r
+Arguments:\r
+\r
+ PeiServices - The PEI core services table.\r
+ Type - Type of the new HOB.\r
+ Length - Length of the new HOB to allocate.\r
+ Hob - Pointer to the new HOB.\r
+\r
+Returns:\r
+\r
+ Status - EFI_SUCCESS\r
+ - EFI_INVALID_PARAMETER if Hob is NULL\r
+ - EFI_NOT_AVAILABLE_YET if HobList is still not available.\r
+ - EFI_OUT_OF_RESOURCES if there is no more memory to grow the Hoblist.\r
+ \r
+--*/\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;\r
+ EFI_HOB_GENERIC_HEADER *HobEnd;\r
+ EFI_PHYSICAL_ADDRESS FreeMemory;\r
+\r
+\r
+ Status = PeiGetHobList (PeiServices, Hob);\r
+ if (EFI_ERROR(Status)) {\r
+ return Status;\r
+ }\r
+\r
+ HandOffHob = *Hob;\r
+\r
+ Length = (UINT16)((Length + 0x7) & (~0x7));\r
+\r
+ FreeMemory = HandOffHob->EfiFreeMemoryTop -\r
+ HandOffHob->EfiFreeMemoryBottom;\r
+\r
+ if (FreeMemory < Length) {\r
+ DEBUG ((EFI_D_ERROR, "PeiCreateHob fail: Length - 0x%08x\n", (UINTN)Length));\r
+ DEBUG ((EFI_D_ERROR, " FreeMemoryTop - 0x%08x\n", (UINTN)HandOffHob->EfiFreeMemoryTop));\r
+ DEBUG ((EFI_D_ERROR, " FreeMemoryBottom - 0x%08x\n", (UINTN)HandOffHob->EfiFreeMemoryBottom));\r
+ return EFI_OUT_OF_RESOURCES;\r
+ }\r
+ \r
+ *Hob = (VOID*) (UINTN) HandOffHob->EfiEndOfHobList;\r
+ ((EFI_HOB_GENERIC_HEADER*) *Hob)->HobType = Type;\r
+ ((EFI_HOB_GENERIC_HEADER*) *Hob)->HobLength = Length;\r
+ ((EFI_HOB_GENERIC_HEADER*) *Hob)->Reserved = 0;\r
+\r
+ HobEnd = (EFI_HOB_GENERIC_HEADER*) ((UINTN) *Hob + Length);\r
+ HandOffHob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;\r
+ \r
+ HobEnd->HobType = EFI_HOB_TYPE_END_OF_HOB_LIST;\r
+ HobEnd->HobLength = sizeof(EFI_HOB_GENERIC_HEADER);\r
+ HobEnd->Reserved = 0;\r
+ HobEnd++;\r
+ HandOffHob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;\r
+\r
+\r
+ return EFI_SUCCESS; \r
+}\r
+\r
+\r
+EFI_STATUS\r
+PeiCoreBuildHobHandoffInfoTable (\r
+ IN EFI_BOOT_MODE BootMode,\r
+ IN EFI_PHYSICAL_ADDRESS MemoryBegin,\r
+ IN UINT64 MemoryLength\r
+ )\r
+/*++\r
+\r
+Routine Description:\r
+\r
+ Builds a Handoff Information Table HOB\r
+\r
+Arguments:\r
+\r
+ BootMode - Current Bootmode\r
+ MemoryBegin - Start Memory Address.\r
+ MemoryLength - Length of Memory.\r
+\r
+Returns:\r
+\r
+ EFI_SUCCESS\r
+\r
+--*/\r
+{\r
+ EFI_HOB_HANDOFF_INFO_TABLE *Hob;\r
+ EFI_HOB_GENERIC_HEADER *HobEnd;\r
+\r
+ Hob = (VOID *)(UINTN)MemoryBegin;\r
+ HobEnd = (EFI_HOB_GENERIC_HEADER*) (Hob+1);\r
+ Hob->Header.HobType = EFI_HOB_TYPE_HANDOFF;\r
+ Hob->Header.HobLength = sizeof(EFI_HOB_HANDOFF_INFO_TABLE);\r
+ Hob->Header.Reserved = 0;\r
+ \r
+ HobEnd->HobType = EFI_HOB_TYPE_END_OF_HOB_LIST;\r
+ HobEnd->HobLength = sizeof(EFI_HOB_GENERIC_HEADER);\r
+ HobEnd->Reserved = 0;\r
+\r
+ Hob->Version = EFI_HOB_HANDOFF_TABLE_VERSION;\r
+ Hob->BootMode = BootMode;\r
+ \r
+ Hob->EfiMemoryTop = MemoryBegin + MemoryLength;\r
+ Hob->EfiMemoryBottom = MemoryBegin;\r
+ Hob->EfiFreeMemoryTop = MemoryBegin + MemoryLength;\r
+ Hob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) (HobEnd+1);\r
+ Hob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
projects / mirror_edk2.git / blobdiff