mirror of https://github.com/acidanthera/audk.git
445 lines
13 KiB
C
445 lines
13 KiB
C
/** @file
|
||
HOB Library.
|
||
|
||
Copyright (c) 2006, Intel Corporation<BR>
|
||
All rights reserved. This program and the accompanying materials
|
||
are licensed and made available under the terms and conditions of the BSD License
|
||
which accompanies this distribution. The full text of the license may be found at
|
||
http://opensource.org/licenses/bsd-license.php
|
||
|
||
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
|
||
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
|
||
|
||
Module Name: HobLib.c
|
||
|
||
**/
|
||
|
||
|
||
|
||
extern VOID *gHobList;
|
||
|
||
|
||
/**
|
||
Returns the pointer to the HOB list.
|
||
|
||
This function returns the pointer to first HOB in the list.
|
||
|
||
@return The pointer to the HOB list.
|
||
|
||
**/
|
||
VOID *
|
||
EFIAPI
|
||
GetHobList (
|
||
VOID
|
||
)
|
||
{
|
||
return gHobList;
|
||
}
|
||
|
||
/**
|
||
Returns the next instance of a HOB type from the starting HOB.
|
||
|
||
This function searches the first instance of a HOB type from the starting HOB pointer.
|
||
If there does not exist such HOB type from the starting HOB pointer, it will return NULL.
|
||
In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
|
||
unconditionally: it returns HobStart back if HobStart itself meets the requirement;
|
||
caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.
|
||
If HobStart is NULL, then ASSERT().
|
||
|
||
@param Type The HOB type to return.
|
||
@param HobStart The starting HOB pointer to search from.
|
||
|
||
@return The next instance of a HOB type from the starting HOB.
|
||
|
||
**/
|
||
VOID *
|
||
EFIAPI
|
||
GetNextHob (
|
||
IN UINT16 Type,
|
||
IN CONST VOID *HobStart
|
||
)
|
||
{
|
||
EFI_PEI_HOB_POINTERS Hob;
|
||
|
||
ASSERT (HobStart != NULL);
|
||
|
||
Hob.Raw = (UINT8 *) HobStart;
|
||
//
|
||
// Parse the HOB list until end of list or matching type is found.
|
||
//
|
||
while (!END_OF_HOB_LIST (Hob)) {
|
||
if (Hob.Header->HobType == Type) {
|
||
return Hob.Raw;
|
||
}
|
||
Hob.Raw = GET_NEXT_HOB (Hob);
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
Returns the first instance of a HOB type among the whole HOB list.
|
||
|
||
This function searches the first instance of a HOB type among the whole HOB list.
|
||
If there does not exist such HOB type in the HOB list, it will return NULL.
|
||
|
||
@param Type The HOB type to return.
|
||
|
||
@return The next instance of a HOB type from the starting HOB.
|
||
|
||
**/
|
||
VOID *
|
||
EFIAPI
|
||
GetFirstHob (
|
||
IN UINT16 Type
|
||
)
|
||
{
|
||
VOID *HobList;
|
||
|
||
HobList = GetHobList ();
|
||
return GetNextHob (Type, HobList);
|
||
}
|
||
|
||
/**
|
||
This function searches the first instance of a HOB from the starting HOB pointer.
|
||
Such HOB should satisfy two conditions:
|
||
its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
|
||
If there does not exist such HOB from the starting HOB pointer, it will return NULL.
|
||
Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
|
||
to extract the data section and its size info respectively.
|
||
In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
|
||
unconditionally: it returns HobStart back if HobStart itself meets the requirement;
|
||
caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.
|
||
If Guid is NULL, then ASSERT().
|
||
If HobStart is NULL, then ASSERT().
|
||
|
||
@param Guid The GUID to match with in the HOB list.
|
||
@param HobStart A pointer to a Guid.
|
||
|
||
@return The next instance of the matched GUID HOB from the starting HOB.
|
||
|
||
**/
|
||
VOID *
|
||
EFIAPI
|
||
GetNextGuidHob (
|
||
IN CONST EFI_GUID *Guid,
|
||
IN CONST VOID *HobStart
|
||
)
|
||
{
|
||
EFI_PEI_HOB_POINTERS GuidHob;
|
||
|
||
GuidHob.Raw = (UINT8 *) HobStart;
|
||
while ((GuidHob.Raw = GetNextHob (EFI_HOB_TYPE_GUID_EXTENSION, GuidHob.Raw)) != NULL) {
|
||
if (CompareGuid (Guid, &GuidHob.Guid->Name)) {
|
||
break;
|
||
}
|
||
GuidHob.Raw = GET_NEXT_HOB (GuidHob);
|
||
}
|
||
return GuidHob.Raw;
|
||
}
|
||
|
||
/**
|
||
This function searches the first instance of a HOB among the whole HOB list.
|
||
Such HOB should satisfy two conditions:
|
||
its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
|
||
If there does not exist such HOB from the starting HOB pointer, it will return NULL.
|
||
Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
|
||
to extract the data section and its size info respectively.
|
||
If Guid is NULL, then ASSERT().
|
||
|
||
@param Guid The GUID to match with in the HOB list.
|
||
|
||
@return The first instance of the matched GUID HOB among the whole HOB list.
|
||
|
||
**/
|
||
VOID *
|
||
EFIAPI
|
||
GetFirstGuidHob (
|
||
IN CONST EFI_GUID *Guid
|
||
)
|
||
{
|
||
VOID *HobList;
|
||
|
||
HobList = GetHobList ();
|
||
return GetNextGuidHob (Guid, HobList);
|
||
}
|
||
|
||
/**
|
||
Builds a HOB for a loaded PE32 module.
|
||
|
||
This function builds a HOB for a loaded PE32 module.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If ModuleName is NULL, then ASSERT().
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
|
||
@param ModuleName The GUID File Name of the module.
|
||
@param MemoryAllocationModule The 64 bit physical address of the module.
|
||
@param ModuleLength The length of the module in bytes.
|
||
@param EntryPoint The 64 bit physical address of the module<6C>s entry point.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
BuildModuleHob (
|
||
IN CONST EFI_GUID *ModuleName,
|
||
IN EFI_PHYSICAL_ADDRESS MemoryAllocationModule,
|
||
IN UINT64 ModuleLength,
|
||
IN EFI_PHYSICAL_ADDRESS EntryPoint
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
}
|
||
|
||
/**
|
||
Builds a HOB that describes a chunk of system memory.
|
||
|
||
This function builds a HOB that describes a chunk of system memory.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
|
||
@param ResourceType The type of resource described by this HOB.
|
||
@param ResourceAttribute The resource attributes of the memory described by this HOB.
|
||
@param PhysicalStart The 64 bit physical address of memory described by this HOB.
|
||
@param NumberOfBytes The length of the memory described by this HOB in bytes.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
BuildResourceDescriptorHob (
|
||
IN EFI_RESOURCE_TYPE ResourceType,
|
||
IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,
|
||
IN EFI_PHYSICAL_ADDRESS PhysicalStart,
|
||
IN UINT64 NumberOfBytes
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
}
|
||
|
||
/**
|
||
Builds a GUID HOB with a certain data length.
|
||
|
||
This function builds a customized HOB tagged with a GUID for identification
|
||
and returns the start address of GUID HOB data so that caller can fill the customized data.
|
||
The HOB Header and Name field is already stripped.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If Guid is NULL, then ASSERT().
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
|
||
|
||
@param Guid The GUID to tag the customized HOB.
|
||
@param DataLength The size of the data payload for the GUID HOB.
|
||
|
||
@return The start address of GUID HOB data.
|
||
|
||
**/
|
||
VOID *
|
||
EFIAPI
|
||
BuildGuidHob (
|
||
IN CONST EFI_GUID *Guid,
|
||
IN UINTN DataLength
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
Copies a data buffer to a newly-built HOB.
|
||
|
||
This function builds a customized HOB tagged with a GUID for identification,
|
||
copies the input data to the HOB data field and returns the start address of the GUID HOB data.
|
||
The HOB Header and Name field is already stripped.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If Guid is NULL, then ASSERT().
|
||
If Data is NULL and DataLength > 0, then ASSERT().
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
|
||
|
||
@param Guid The GUID to tag the customized HOB.
|
||
@param Data The data to be copied into the data field of the GUID HOB.
|
||
@param DataLength The size of the data payload for the GUID HOB.
|
||
|
||
@return The start address of GUID HOB data.
|
||
|
||
**/
|
||
VOID *
|
||
EFIAPI
|
||
BuildGuidDataHob (
|
||
IN CONST EFI_GUID *Guid,
|
||
IN VOID *Data,
|
||
IN UINTN DataLength
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
return NULL;
|
||
}
|
||
|
||
/**
|
||
Builds a Firmware Volume HOB.
|
||
|
||
This function builds a Firmware Volume HOB.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
|
||
@param BaseAddress The base address of the Firmware Volume.
|
||
@param Length The size of the Firmware Volume in bytes.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
BuildFvHob (
|
||
IN EFI_PHYSICAL_ADDRESS BaseAddress,
|
||
IN UINT64 Length
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
}
|
||
|
||
/**
|
||
Builds a Capsule Volume HOB.
|
||
|
||
This function builds a Capsule Volume HOB.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
|
||
@param BaseAddress The base address of the Capsule Volume.
|
||
@param Length The size of the Capsule Volume in bytes.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
BuildCvHob (
|
||
IN EFI_PHYSICAL_ADDRESS BaseAddress,
|
||
IN UINT64 Length
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
}
|
||
|
||
/**
|
||
Builds a HOB for the CPU.
|
||
|
||
This function builds a HOB for the CPU.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
|
||
@param SizeOfMemorySpace The maximum physical memory addressability of the processor.
|
||
@param SizeOfIoSpace The maximum physical I/O addressability of the processor.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
BuildCpuHob (
|
||
IN UINT8 SizeOfMemorySpace,
|
||
IN UINT8 SizeOfIoSpace
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
}
|
||
|
||
/**
|
||
Builds a HOB for the Stack.
|
||
|
||
This function builds a HOB for the stack.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
|
||
@param BaseAddress The 64 bit physical address of the Stack.
|
||
@param Length The length of the stack in bytes.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
BuildStackHob (
|
||
IN EFI_PHYSICAL_ADDRESS BaseAddress,
|
||
IN UINT64 Length
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
}
|
||
|
||
/**
|
||
Builds a HOB for the BSP store.
|
||
|
||
This function builds a HOB for BSP store.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
|
||
@param BaseAddress The 64 bit physical address of the BSP.
|
||
@param Length The length of the BSP store in bytes.
|
||
@param MemoryType Type of memory allocated by this HOB.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
BuildBspStoreHob (
|
||
IN EFI_PHYSICAL_ADDRESS BaseAddress,
|
||
IN UINT64 Length,
|
||
IN EFI_MEMORY_TYPE MemoryType
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
}
|
||
|
||
/**
|
||
Builds a HOB for the memory allocation.
|
||
|
||
This function builds a HOB for the memory allocation.
|
||
It can only be invoked during PEI phase;
|
||
for DXE phase, it will ASSERT() since PEI HOB is read-only for DXE phase.
|
||
If there is no additional space for HOB creation, then ASSERT().
|
||
|
||
@param BaseAddress The 64 bit physical address of the memory.
|
||
@param Length The length of the memory allocation in bytes.
|
||
@param MemoryType Type of memory allocated by this HOB.
|
||
|
||
**/
|
||
VOID
|
||
EFIAPI
|
||
BuildMemoryAllocationHob (
|
||
IN EFI_PHYSICAL_ADDRESS BaseAddress,
|
||
IN UINT64 Length,
|
||
IN EFI_MEMORY_TYPE MemoryType
|
||
)
|
||
{
|
||
//
|
||
// PEI HOB is read only for DXE phase
|
||
//
|
||
ASSERT (FALSE);
|
||
}
|