mirror of https://github.com/acidanthera/audk.git
433 lines
11 KiB
C
433 lines
11 KiB
C
/** @file
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HOB Library.
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Copyright (c) 2006, Intel Corporation<BR>
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name: HobLib.c
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**/
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/**
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Returns the pointer to the HOB list.
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None.
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The pointer to the HOB list.
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**/
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VOID *
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EFIAPI
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GetHobList (
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VOID
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)
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{
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EFI_STATUS Status;
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VOID *HobList;
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Status = PeiCoreGetHobList (&HobList);
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ASSERT_EFI_ERROR (Status);
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ASSERT (HobList != NULL);
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return HobList;
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}
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/**
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This function searches the first instance of a HOB type from the starting HOB pointer.
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If there does not exist such HOB type from the starting HOB pointer, it will return NULL.
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@param Type The HOB type to return.
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@param HobStart The starting HOB pointer to search from.
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@return The next instance of a HOB type from the starting HOB.
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**/
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VOID *
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EFIAPI
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GetNextHob (
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IN UINT16 Type,
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IN CONST VOID *HobStart
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)
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{
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EFI_PEI_HOB_POINTERS Hob;
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ASSERT (HobStart != NULL);
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Hob.Raw = (UINT8 *) HobStart;
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//
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// Parse the HOB list, stop if end of list or matching type found.
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//
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while (!END_OF_HOB_LIST (Hob)) {
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if (Hob.Header->HobType == Type) {
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return Hob.Raw;
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}
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Hob.Raw = GET_NEXT_HOB (Hob);
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}
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return NULL;
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}
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/**
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This function searches the first instance of a HOB type among the whole HOB list.
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If there does not exist such HOB type in the HOB list, it will return NULL.
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@param Type The HOB type to return.
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@return The next instance of a HOB type from the starting HOB.
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**/
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VOID *
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EFIAPI
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GetFirstHob (
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IN UINT16 Type
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)
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{
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VOID *HobList;
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HobList = GetHobList ();
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return GetNextHob (Type, HobList);
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}
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/**
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This function searches the first instance of a HOB from the starting HOB pointer.
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Such HOB should satisfy two conditions:
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its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
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If there does not exist such HOB from the starting HOB pointer, it will return NULL.
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@param Guid The GUID to match with in the HOB list.
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@param HobStart A pointer to a Guid.
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@return The next instance of the matched GUID HOB from the starting HOB.
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**/
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VOID *
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EFIAPI
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GetNextGuidHob (
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IN CONST EFI_GUID *Guid,
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IN CONST VOID *HobStart
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)
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{
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EFI_PEI_HOB_POINTERS GuidHob;
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GuidHob.Raw = (UINT8 *) HobStart;
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while ((GuidHob.Raw = GetNextHob (EFI_HOB_TYPE_GUID_EXTENSION, GuidHob.Raw)) != NULL) {
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if (CompareGuid (Guid, &GuidHob.Guid->Name)) {
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break;
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}
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GuidHob.Raw = GET_NEXT_HOB (GuidHob);
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}
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return GuidHob.Raw;
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}
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/**
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This function searches the first instance of a HOB among the whole HOB list.
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Such HOB should satisfy two conditions:
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its HOB type is EFI_HOB_TYPE_GUID_EXTENSION and its GUID Name equals to the input Guid.
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If there does not exist such HOB from the starting HOB pointer, it will return NULL.
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@param Guid The GUID to match with in the HOB list.
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@return The first instance of the matched GUID HOB among the whole HOB list.
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**/
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VOID *
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EFIAPI
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GetFirstGuidHob (
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IN CONST EFI_GUID *Guid
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)
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{
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VOID *HobList;
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HobList = GetHobList ();
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return GetNextGuidHob (Guid, HobList);
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}
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/**
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Add a new HOB to the HOB List.
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@param Type Type of the new HOB.
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@param Length Length of the new HOB to allocate.
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@return The address of new HOB.
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**/
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VOID *
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InternalPeiCreateHob (
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IN UINT16 Type,
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IN UINT16 Length
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)
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{
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EFI_STATUS Status;
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VOID *Hob;
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Status = PeiCoreCreateHob (Type, Length, &Hob);
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//
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// Assume the process of HOB building is always successful.
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//
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ASSERT_EFI_ERROR (Status);
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return Hob;
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}
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/**
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This function builds a HOB for a loaded PE32 module.
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@param ModuleName The GUID File Name of the module.
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@param MemoryAllocationModule The 64 bit physical address of the module.
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@param ModuleLength The length of the module in bytes.
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@param EntryPoint The 64 bit physical address of the module<6C>s entry point.
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**/
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VOID
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EFIAPI
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BuildModuleHob (
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IN CONST EFI_GUID *ModuleName,
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IN EFI_PHYSICAL_ADDRESS MemoryAllocationModule,
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IN UINT64 ModuleLength,
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IN EFI_PHYSICAL_ADDRESS EntryPoint
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)
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{
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EFI_HOB_MEMORY_ALLOCATION_MODULE *Hob;
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Hob = InternalPeiCreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_MODULE));
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CopyGuid (&(Hob->MemoryAllocationHeader.Name), &gEfiHobMemoryAllocModuleGuid);
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Hob->MemoryAllocationHeader.MemoryBaseAddress = MemoryAllocationModule;
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Hob->MemoryAllocationHeader.MemoryLength = ModuleLength;
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Hob->MemoryAllocationHeader.MemoryType = EfiBootServicesCode;
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CopyGuid (&Hob->ModuleName, ModuleName);
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Hob->EntryPoint = EntryPoint;
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}
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/**
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Builds a HOB that describes a chunk of system memory.
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@param ResourceType The type of resource described by this HOB.
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@param ResourceAttribute The resource attributes of the memory described by this HOB.
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@param PhysicalStart The 64 bit physical address of memory described by this HOB.
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@param NumberOfBytes The length of the memory described by this HOB in bytes.
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**/
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VOID
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EFIAPI
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BuildResourceDescriptorHob (
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IN EFI_RESOURCE_TYPE ResourceType,
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IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,
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IN EFI_PHYSICAL_ADDRESS PhysicalStart,
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IN UINT64 NumberOfBytes
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)
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{
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EFI_HOB_RESOURCE_DESCRIPTOR *Hob;
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Hob = InternalPeiCreateHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, sizeof (EFI_HOB_RESOURCE_DESCRIPTOR));
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Hob->ResourceType = ResourceType;
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Hob->ResourceAttribute = ResourceAttribute;
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Hob->PhysicalStart = PhysicalStart;
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Hob->ResourceLength = NumberOfBytes;
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}
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/**
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This function builds a customized HOB tagged with a GUID for identification
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and returns the start address of GUID HOB data so that caller can fill the customized data.
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@param Guid The GUID to tag the customized HOB.
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@param DataLength The size of the data payload for the GUID HOB.
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@return The start address of GUID HOB data.
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**/
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VOID *
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EFIAPI
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BuildGuidHob (
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IN CONST EFI_GUID *Guid,
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IN UINTN DataLength
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)
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{
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EFI_HOB_GUID_TYPE *Hob;
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//
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// Make sure that data length is not too long.
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//
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ASSERT (DataLength <= (0xffff - sizeof (EFI_HOB_GUID_TYPE)));
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Hob = InternalPeiCreateHob (EFI_HOB_TYPE_GUID_EXTENSION, (UINT16) (sizeof (EFI_HOB_GUID_TYPE) + DataLength));
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CopyGuid (&Hob->Name, Guid);
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return Hob + 1;
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}
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/**
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This function builds a customized HOB tagged with a GUID for identification,
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copies the input data to the HOB data field, and returns the start address of GUID HOB data.
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@param Guid The GUID to tag the customized HOB.
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@param Data The data to be copied into the data field of the GUID HOB.
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@param DataLength The size of the data payload for the GUID HOB.
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@return The start address of GUID HOB data.
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**/
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VOID *
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EFIAPI
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BuildGuidDataHob (
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IN CONST EFI_GUID *Guid,
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IN VOID *Data,
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IN UINTN DataLength
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)
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{
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VOID *HobData;
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HobData = BuildGuidHob (Guid, DataLength);
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return CopyMem (HobData, Data, DataLength);
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}
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/**
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Builds a Firmware Volume HOB.
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@param BaseAddress The base address of the Firmware Volume.
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@param Length The size of the Firmware Volume in bytes.
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**/
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VOID
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EFIAPI
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BuildFvHob (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length
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)
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{
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EFI_HOB_FIRMWARE_VOLUME *Hob;
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Hob = InternalPeiCreateHob (EFI_HOB_TYPE_FV, sizeof (EFI_HOB_FIRMWARE_VOLUME));
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Hob->BaseAddress = BaseAddress;
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Hob->Length = Length;
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}
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/**
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Builds a Capsule Volume HOB.
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@param BaseAddress The base address of the Capsule Volume.
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@param Length The size of the Capsule Volume in bytes.
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**/
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VOID
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EFIAPI
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BuildCvHob (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length
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)
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{
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EFI_HOB_CAPSULE_VOLUME *Hob;
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Hob = InternalPeiCreateHob (EFI_HOB_TYPE_CV, sizeof (EFI_HOB_CAPSULE_VOLUME));
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Hob->BaseAddress = BaseAddress;
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Hob->Length = Length;
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}
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/**
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Builds a HOB for the CPU.
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@param SizeOfMemorySpace The maximum physical memory addressability of the processor.
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@param SizeOfIoSpace The maximum physical I/O addressability of the processor.
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**/
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VOID
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EFIAPI
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BuildCpuHob (
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IN UINT8 SizeOfMemorySpace,
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IN UINT8 SizeOfIoSpace
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)
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{
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EFI_HOB_CPU *Hob;
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Hob = InternalPeiCreateHob (EFI_HOB_TYPE_CPU, sizeof (EFI_HOB_CPU));
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Hob->SizeOfMemorySpace = SizeOfMemorySpace;
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Hob->SizeOfIoSpace = SizeOfIoSpace;
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}
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/**
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Builds a HOB for the Stack.
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@param BaseAddress The 64 bit physical address of the Stack.
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@param Length The length of the stack in bytes.
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**/
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VOID
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EFIAPI
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BuildStackHob (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length
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)
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{
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EFI_HOB_MEMORY_ALLOCATION_STACK *Hob;
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Hob = InternalPeiCreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_STACK));
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CopyGuid (&(Hob->AllocDescriptor.Name), &gEfiHobMemoryAllocStackGuid);
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Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
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Hob->AllocDescriptor.MemoryLength = Length;
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Hob->AllocDescriptor.MemoryType = EfiConventionalMemory;
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}
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/**
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Builds a HOB for the BSP store.
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@param BaseAddress The 64 bit physical address of the BSP.
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@param Length The length of the BSP store in bytes.
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@param MemoryType Type of memory allocated by this HOB.
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**/
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VOID
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EFIAPI
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BuildBspStoreHob (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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IN EFI_MEMORY_TYPE MemoryType
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)
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{
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EFI_HOB_MEMORY_ALLOCATION_BSP_STORE *Hob;
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Hob = InternalPeiCreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION_BSP_STORE));
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CopyGuid (&(Hob->AllocDescriptor.Name), &gEfiHobMemoryAllocBspStoreGuid);
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Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
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Hob->AllocDescriptor.MemoryLength = Length;
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Hob->AllocDescriptor.MemoryType = MemoryType;
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}
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/**
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Builds a HOB for the memory allocation.
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@param BaseAddress The 64 bit physical address of the memory.
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@param Length The length of the memory allocation in bytes.
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@param MemoryType Type of memory allocated by this HOB.
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**/
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VOID
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EFIAPI
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BuildMemoryAllocationHob (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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IN EFI_MEMORY_TYPE MemoryType
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)
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{
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EFI_HOB_MEMORY_ALLOCATION *Hob;
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Hob = InternalPeiCreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION));
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ZeroMem (&(Hob->AllocDescriptor.Name), sizeof (EFI_GUID));
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Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
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Hob->AllocDescriptor.MemoryLength = Length;
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Hob->AllocDescriptor.MemoryType = MemoryType;
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}
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