--- /dev/null
+/** @file\r
+ HOB Library.\r
+\r
+ Copyright (c) 2006 - 2007, Intel Corporation<BR>\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: HobLib.c\r
+\r
+**/\r
+\r
+\r
+\r
+STATIC VOID *mHobList = NULL;\r
+\r
+/**\r
+ The constructor function caches the pointer to HOB list.\r
+ \r
+ The constructor function gets the start address of HOB list from system configuration table.\r
+ It will ASSERT() if that operation fails and it will always return EFI_SUCCESS. \r
+\r
+ @param ImageHandle The firmware allocated handle for the EFI image.\r
+ @param SystemTable A pointer to the EFI System Table.\r
+ \r
+ @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+HobLibConstructor (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+\r
+ Status = EfiGetSystemConfigurationTable (&gEfiHobListGuid, &mHobList);\r
+ ASSERT_EFI_ERROR (Status);\r
+ ASSERT (mHobList != NULL);\r
+ return Status;\r
+}\r
+\r
+/**\r
+ Returns the pointer to the HOB list.\r
+\r
+ This function returns the pointer to first HOB in the list.\r
+\r
+ @return The pointer to the HOB list.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+GetHobList (\r
+ VOID\r
+ )\r
+{\r
+ return mHobList;\r
+}\r
+\r
+/**\r
+ Returns the next instance of a HOB type from the starting HOB.\r
+\r
+ This function searches the first instance of a HOB type from the starting HOB pointer. \r
+ If there does not exist such HOB type from the starting HOB pointer, it will return NULL.\r
+ In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer\r
+ unconditionally: it returns HobStart back if HobStart itself meets the requirement;\r
+ caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.\r
+ If HobStart is NULL, then ASSERT().\r
+\r
+ @param Type The HOB type to return.\r
+ @param HobStart The starting HOB pointer to search from.\r
+\r
+ @return The next instance of a HOB type from the starting HOB.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+GetNextHob (\r
+ IN UINT16 Type,\r
+ IN CONST VOID *HobStart\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS Hob;\r
+\r
+ ASSERT (HobStart != NULL);\r
+ \r
+ Hob.Raw = (UINT8 *) HobStart;\r
+ //\r
+ // Parse the HOB list until end of list or matching type is found.\r
+ //\r
+ while (!END_OF_HOB_LIST (Hob)) {\r
+ if (Hob.Header->HobType == Type) {\r
+ return Hob.Raw;\r
+ }\r
+ Hob.Raw = GET_NEXT_HOB (Hob);\r
+ }\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Returns the first instance of a HOB type among the whole HOB list.\r
+\r
+ This function searches the first instance of a HOB type among the whole HOB list. \r
+ If there does not exist such HOB type in the HOB list, it will return NULL. \r
+\r
+ @param Type The HOB type to return.\r
+\r
+ @return The next instance of a HOB type from the starting HOB.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+GetFirstHob (\r
+ IN UINT16 Type\r
+ )\r
+{\r
+ VOID *HobList;\r
+\r
+ HobList = GetHobList ();\r
+ return GetNextHob (Type, HobList);\r
+}\r
+\r
+/**\r
+ This function searches the first instance of a HOB from the starting HOB pointer. \r
+ Such HOB should satisfy two conditions: \r
+ its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid. \r
+ If there does not exist such HOB from the starting HOB pointer, it will return NULL. \r
+ Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()\r
+ to extract the data section and its size info respectively.\r
+ In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer\r
+ unconditionally: it returns HobStart back if HobStart itself meets the requirement;\r
+ caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.\r
+ If Guid is NULL, then ASSERT().\r
+ If HobStart is NULL, then ASSERT().\r
+\r
+ @param Guid The GUID to match with in the HOB list.\r
+ @param HobStart A pointer to a Guid.\r
+\r
+ @return The next instance of the matched GUID HOB from the starting HOB.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+GetNextGuidHob (\r
+ IN CONST EFI_GUID *Guid,\r
+ IN CONST VOID *HobStart\r
+ )\r
+{\r
+ EFI_PEI_HOB_POINTERS GuidHob;\r
+\r
+ GuidHob.Raw = (UINT8 *) HobStart;\r
+ while ((GuidHob.Raw = GetNextHob (EFI_HOB_TYPE_GUID_EXTENSION, GuidHob.Raw)) != NULL) {\r
+ if (CompareGuid (Guid, &GuidHob.Guid->Name)) {\r
+ break;\r
+ }\r
+ GuidHob.Raw = GET_NEXT_HOB (GuidHob);\r
+ }\r
+ return GuidHob.Raw;\r
+}\r
+\r
+/**\r
+ This function searches the first instance of a HOB among the whole HOB list. \r
+ Such HOB should satisfy two conditions:\r
+ its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.\r
+ If there does not exist such HOB from the starting HOB pointer, it will return NULL.\r
+ Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()\r
+ to extract the data section and its size info respectively.\r
+ If Guid is NULL, then ASSERT().\r
+\r
+ @param Guid The GUID to match with in the HOB list.\r
+\r
+ @return The first instance of the matched GUID HOB among the whole HOB list.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+GetFirstGuidHob (\r
+ IN CONST EFI_GUID *Guid\r
+ )\r
+{\r
+ VOID *HobList;\r
+\r
+ HobList = GetHobList ();\r
+ return GetNextGuidHob (Guid, HobList);\r
+}\r
+\r
+/**\r
+ Get the Boot Mode from the HOB list.\r
+\r
+ This function returns the system boot mode information from the \r
+ PHIT HOB in HOB list.\r
+\r
+ @param VOID\r
+\r
+ @return The Boot Mode.\r
+\r
+**/\r
+EFI_BOOT_MODE\r
+EFIAPI\r
+GetBootModeHob (\r
+ VOID\r
+ )\r
+{\r
+ EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;\r
+\r
+ HandOffHob = (EFI_HOB_HANDOFF_INFO_TABLE *) GetHobList ();\r
+\r
+ return HandOffHob->BootMode;\r
+}\r
+\r
+/**\r
+ Builds a HOB for a loaded PE32 module.\r
+\r
+ This function builds a HOB for a loaded PE32 module.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If ModuleName is NULL, then ASSERT().\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+\r
+ @param ModuleName The GUID File Name of the module.\r
+ @param MemoryAllocationModule The 64 bit physical address of the module.\r
+ @param ModuleLength The length of the module in bytes.\r
+ @param EntryPoint The 64 bit physical address of the module's entry point.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+BuildModuleHob (\r
+ IN CONST EFI_GUID *ModuleName,\r
+ IN EFI_PHYSICAL_ADDRESS MemoryAllocationModule,\r
+ IN UINT64 ModuleLength,\r
+ IN EFI_PHYSICAL_ADDRESS EntryPoint\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+}\r
+\r
+/**\r
+ Builds a HOB that describes a chunk of system memory.\r
+\r
+ This function builds a HOB that describes a chunk of system memory.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+\r
+ @param ResourceType The type of resource described by this HOB.\r
+ @param ResourceAttribute The resource attributes of the memory described by this HOB.\r
+ @param PhysicalStart The 64 bit physical address of memory described by this HOB.\r
+ @param NumberOfBytes The length of the memory described by this HOB in bytes.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+BuildResourceDescriptorHob (\r
+ IN EFI_RESOURCE_TYPE ResourceType,\r
+ IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,\r
+ IN EFI_PHYSICAL_ADDRESS PhysicalStart,\r
+ IN UINT64 NumberOfBytes\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+}\r
+\r
+/**\r
+ Builds a GUID HOB with a certain data length.\r
+\r
+ This function builds a customized HOB tagged with a GUID for identification \r
+ and returns the start address of GUID HOB data so that caller can fill the customized data. \r
+ The HOB Header and Name field is already stripped.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If Guid is NULL, then ASSERT().\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+ If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().\r
+\r
+ @param Guid The GUID to tag the customized HOB.\r
+ @param DataLength The size of the data payload for the GUID HOB.\r
+\r
+ @return The start address of GUID HOB data.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+BuildGuidHob (\r
+ IN CONST EFI_GUID *Guid,\r
+ IN UINTN DataLength\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Copies a data buffer to a newly-built HOB.\r
+\r
+ This function builds a customized HOB tagged with a GUID for identification,\r
+ copies the input data to the HOB data field and returns the start address of the GUID HOB data.\r
+ The HOB Header and Name field is already stripped.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If Guid is NULL, then ASSERT().\r
+ If Data is NULL and DataLength > 0, then ASSERT().\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+ If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().\r
+\r
+ @param Guid The GUID to tag the customized HOB.\r
+ @param Data The data to be copied into the data field of the GUID HOB.\r
+ @param DataLength The size of the data payload for the GUID HOB.\r
+\r
+ @return The start address of GUID HOB data.\r
+\r
+**/\r
+VOID *\r
+EFIAPI\r
+BuildGuidDataHob (\r
+ IN CONST EFI_GUID *Guid,\r
+ IN VOID *Data,\r
+ IN UINTN DataLength\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+ return NULL;\r
+}\r
+\r
+/**\r
+ Builds a Firmware Volume HOB.\r
+\r
+ This function builds a Firmware Volume HOB.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+\r
+ @param BaseAddress The base address of the Firmware Volume.\r
+ @param Length The size of the Firmware Volume in bytes.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+BuildFvHob (\r
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
+ IN UINT64 Length\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+}\r
+\r
+/**\r
+ Builds a Capsule Volume HOB.\r
+\r
+ This function builds a Capsule Volume HOB.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+\r
+ @param BaseAddress The base address of the Capsule Volume.\r
+ @param Length The size of the Capsule Volume in bytes.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+BuildCvHob (\r
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
+ IN UINT64 Length\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+}\r
+\r
+/**\r
+ Builds a HOB for the CPU.\r
+\r
+ This function builds a HOB for the CPU.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+\r
+ @param SizeOfMemorySpace The maximum physical memory addressability of the processor.\r
+ @param SizeOfIoSpace The maximum physical I/O addressability of the processor.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+BuildCpuHob (\r
+ IN UINT8 SizeOfMemorySpace,\r
+ IN UINT8 SizeOfIoSpace\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+}\r
+\r
+/**\r
+ Builds a HOB for the Stack.\r
+\r
+ This function builds a HOB for the stack.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+\r
+ @param BaseAddress The 64 bit physical address of the Stack.\r
+ @param Length The length of the stack in bytes.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+BuildStackHob (\r
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
+ IN UINT64 Length\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+}\r
+\r
+/**\r
+ Builds a HOB for the BSP store.\r
+\r
+ This function builds a HOB for BSP store.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+\r
+ @param BaseAddress The 64 bit physical address of the BSP.\r
+ @param Length The length of the BSP store in bytes.\r
+ @param MemoryType Type of memory allocated by this HOB.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+BuildBspStoreHob (\r
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
+ IN UINT64 Length,\r
+ IN EFI_MEMORY_TYPE MemoryType\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+}\r
+\r
+/**\r
+ Builds a HOB for the memory allocation.\r
+\r
+ This function builds a HOB for the memory allocation.\r
+ It can only be invoked during PEI phase;\r
+ for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.\r
+ If there is no additional space for HOB creation, then ASSERT().\r
+\r
+ @param BaseAddress The 64 bit physical address of the memory.\r
+ @param Length The length of the memory allocation in bytes.\r
+ @param MemoryType Type of memory allocated by this HOB.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+BuildMemoryAllocationHob (\r
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
+ IN UINT64 Length,\r
+ IN EFI_MEMORY_TYPE MemoryType\r
+ )\r
+{\r
+ //\r
+ // PEI HOB is read only for DXE phase\r
+ //\r
+ ASSERT (FALSE);\r
+}\r
projects / mirror_edk2.git / blobdiff