/** @file\r
- HOB Library.\r
+ HOB Library implemenation for Dxe Phase.\r
\r
- Copyright (c) 2006, 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
+Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>\r
+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
+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
**/\r
\r
+#include <PiDxe.h>\r
+\r
+#include <Guid/HobList.h>\r
\r
+#include <Library/HobLib.h>\r
+#include <Library/UefiLib.h>\r
+#include <Library/DebugLib.h>\r
+#include <Library/BaseMemoryLib.h>\r
\r
-STATIC VOID *mHobList = NULL;\r
+VOID *mHobList = NULL;\r
\r
/**\r
The constructor function caches the pointer to HOB list.\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
+ @retval EFI_SUCCESS The constructor successfully gets HobList.\r
+ @retval Other value The constructor can't get HobList.\r
\r
**/\r
EFI_STATUS\r
Status = EfiGetSystemConfigurationTable (&gEfiHobListGuid, &mHobList);\r
ASSERT_EFI_ERROR (Status);\r
ASSERT (mHobList != NULL);\r
+\r
return Status;\r
}\r
\r
/**\r
Returns the pointer to the HOB list.\r
\r
- None.\r
-\r
- The pointer to the HOB list.\r
+ This function returns the pointer to first HOB in the list.\r
+ For PEI phase, the PEI service GetHobList() can be used to retrieve the pointer \r
+ to the HOB list. For the DXE phase, the HOB list pointer can be retrieved through\r
+ the EFI System Table by looking up theHOB list GUID in the System Configuration Table.\r
+ Since the System Configuration Table does not exist that the time the DXE Core is \r
+ launched, the DXE Core uses a global variable from the DXE Core Entry Point Library \r
+ to manage the pointer to the HOB list.\r
+ \r
+ If the pointer to the HOB list is NULL, then ASSERT().\r
+ \r
+ @return The pointer to the HOB list.\r
\r
**/\r
VOID *\r
VOID\r
)\r
{\r
+ ASSERT (mHobList != NULL);\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
+ 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
+ \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
+ @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
Hob.Raw = (UINT8 *) HobStart;\r
//\r
- // Parse the HOB list, stop if end of list or matching type found.\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
}\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
+ If the pointer to the HOB list is NULL, then ASSERT().\r
\r
- @param Type The HOB type to return.\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
\r
/**\r
+ Returns the next instance of the matched GUID HOB from the starting HOB.\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
+ \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
+ @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
\r
/**\r
+ Returns the first instance of the matched GUID HOB among the whole HOB list.\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
+ \r
+ If the pointer to the HOB list is NULL, then ASSERT().\r
+ If Guid is NULL, then ASSERT().\r
\r
- @param Guid The GUID to match with in the HOB list.\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
\r
/**\r
+ Get the system 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
+ If the pointer to the HOB list is NULL, then ASSERT().\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
+ \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\92s entry point.\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 entry point.\r
\r
**/\r
VOID\r
/**\r
Builds a HOB that describes a chunk of system memory.\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
+ 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
+ \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
}\r
\r
/**\r
+ Builds a customized HOB tagged with a GUID for identification and returns \r
+ the start address of GUID HOB data.\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
+ \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
+ @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
\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 GUID HOB data.\r
+ Builds a customized HOB tagged with a GUID for identification, copies the input data to the HOB \r
+ data field, and returns the start address of the GUID HOB data.\r
+\r
+ This function builds a customized HOB tagged with a GUID for identification and copies the input\r
+ data to the HOB data field and returns the start address of the GUID HOB data. It can only be \r
+ invoked during PEI phase; for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase. \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
+ \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
+ @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
Builds a Firmware Volume HOB.\r
\r
- @param BaseAddress The base address of the Firmware Volume.\r
- @param Length The size of the Firmware Volume in bytes.\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
+ \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
ASSERT (FALSE);\r
}\r
\r
+/**\r
+ Builds a EFI_HOB_TYPE_FV2 HOB.\r
+\r
+ This function builds a EFI_HOB_TYPE_FV2 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
+ \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
+ @param FvName The name of the Firmware Volume.\r
+ @param FileName The name of the file.\r
+ \r
+**/\r
+VOID\r
+EFIAPI\r
+BuildFv2Hob (\r
+ IN EFI_PHYSICAL_ADDRESS BaseAddress,\r
+ IN UINT64 Length,\r
+ IN CONST EFI_GUID *FvName,\r
+ IN CONST EFI_GUID *FileName\r
+ )\r
+{\r
+ ASSERT (FALSE);\r
+}\r
+\r
+\r
/**\r
Builds a Capsule Volume HOB.\r
\r
- @param BaseAddress The base address of the Capsule Volume.\r
- @param Length The size of the Capsule Volume in bytes.\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
+ \r
+ If the platform does not support Capsule Volume HOBs, then ASSERT().\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
/**\r
Builds a HOB for the CPU.\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
+ 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
+ \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
/**\r
Builds a HOB for the Stack.\r
\r
- @param BaseAddress The 64 bit physical address of the Stack.\r
- @param Length The length of the stack in bytes.\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
+ \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
/**\r
Builds a HOB for the BSP store.\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
+ 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
+ \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
/**\r
Builds a HOB for the memory allocation.\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
+ 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
+ \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
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