peihoblib.c

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/*++

Copyright (c) 2004, Intel Corporation                                                         
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.             

MemoryAllocationModule Name:

  Peihoblib.c

Abstract:

  PEI Library Functions
 
--*/

#include "Tiano.h"
#include "PeiHob.h"
#include "peihoblib.h"
#include "peilib.h"
#include EFI_GUID_DEFINITION(MemoryAllocationHob)


EFI_PEI_HOB_POINTERS
BuildHobEndOfHobList (
  IN  VOID  *HobStart
  )
/*++

Routine Description:

  Builds an end of HOB list HOB

Arguments:

  HobStart    - The HOB to build

Returns:

  A pointer to the next HOB

--*/
{
  EFI_PEI_HOB_POINTERS  Hob;

  Hob.Raw = HobStart;
  
  Hob.Header->HobType   = EFI_HOB_TYPE_END_OF_HOB_LIST;
  Hob.Header->HobLength = sizeof(EFI_HOB_GENERIC_HEADER);

  Hob.Header++;
  return Hob;
}

EFI_STATUS
BuildHobHandoffInfoTable (
  IN  VOID                    *HobStart,
  IN  UINT16                  Version,
  IN  EFI_BOOT_MODE           BootMode,
  IN  EFI_PHYSICAL_ADDRESS    EfiMemoryTop,
  IN  EFI_PHYSICAL_ADDRESS    EfiMemoryBottom,
  IN  EFI_PHYSICAL_ADDRESS    EfiFreeMemoryTop,
  IN  EFI_PHYSICAL_ADDRESS    EfiFreeMemoryBottom
 )
/*++

Routine Description:

  Builds a HandoffInformationTable Information Table HOB

Arguments:

  HobStart      - Start pointer of hob list
  Version       - The version number pertaining to the PHIT HOB definition.
  BootMode      - The system boot mode as determined during the HOB producer phase.
  EfiMemoryTop  - The highest address location of memory that is allocated for use by the HOB
                  producer phase.
  EfiMemoryBottom   - The lowest address location of memory that is allocated for use by the HOB
                      producer phase.
  EfiFreeMemoryTop  - The highest address location of free memory that is currently available for use
                      by the HOB producer phase.
  EfiFreeMemoryBottom   - The lowest address location of free memory that is available for 
                          use by the HOB producer phase.
  
Returns:

  EFI_SUCCESS

--*/
{
  EFI_PEI_HOB_POINTERS        HandOffHob;
  EFI_PEI_HOB_POINTERS        Hob;
  EFI_PEI_HOB_POINTERS        HobEnd;
  

  HandOffHob.Raw     = HobStart;
  Hob.Raw            = HobStart;
  Hob.Header->HobType   = EFI_HOB_TYPE_HANDOFF;
  Hob.Header->HobLength = sizeof(EFI_HOB_HANDOFF_INFO_TABLE);

  Hob.HandoffInformationTable->Version        = Version;
  Hob.HandoffInformationTable->BootMode       = BootMode;
  
  Hob.HandoffInformationTable->EfiMemoryTop     = EfiMemoryTop;
  Hob.HandoffInformationTable->EfiMemoryBottom  = EfiMemoryBottom;
  Hob.HandoffInformationTable->EfiFreeMemoryTop = EfiFreeMemoryTop;
  Hob.HandoffInformationTable->EfiFreeMemoryBottom = EfiFreeMemoryBottom;
 
  HobEnd.Raw = (VOID*)(Hob.HandoffInformationTable + 1);
  Hob.HandoffInformationTable->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd.Raw;
  Hob = BuildHobEndOfHobList (HobEnd.Raw);
  HandOffHob.HandoffInformationTable->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) Hob.Raw;
  return EFI_SUCCESS;
}



EFI_STATUS
BuildHobModule (
  IN VOID                   *HobStart,
  IN EFI_GUID               *ModuleName,
  IN EFI_PHYSICAL_ADDRESS   MemoryAllocationModule,
  IN UINT64                 ModuleLength,
  IN EFI_PHYSICAL_ADDRESS   EntryPoint
  )
/*++

Routine Description:

  Builds a HOB for a loaded PE32 module

Arguments:

  HobStart                  - Start pointer of hob list

  ModuleName                - The GUID File Name of the HON from the Firmware Volume

  MemoryAllocationModule                    - The 64 bit physical address of the module

  ModuleLength              - The length of the module in bytes

  EntryPoint                - The 64 bit physical address of the entry point to the module

Returns:

  EFI_SUCCESS
  EFI_NOT_AVAILABLE_YET

--*/
{
  EFI_PEI_HOB_POINTERS        Hob;
  EFI_PEI_HOB_POINTERS        HandOffHob;
 
  HandOffHob.Raw = HobStart;
  Hob.Raw = (VOID*)(UINTN)(HandOffHob.HandoffInformationTable->EfiEndOfHobList);

  Hob.Header->HobType   = EFI_HOB_TYPE_MEMORY_ALLOCATION;
  Hob.Header->HobLength = sizeof(EFI_HOB_MEMORY_ALLOCATION_MODULE);
  
  CopyMem(&(Hob.MemoryAllocationModule->ModuleName), ModuleName, sizeof(EFI_GUID));
  CopyMem(&(Hob.MemoryAllocationModule->MemoryAllocationHeader.Name), &gEfiHobMemeryAllocModuleGuid, sizeof(EFI_GUID));
  Hob.MemoryAllocationModule->MemoryAllocationHeader.MemoryBaseAddress = MemoryAllocationModule;
  Hob.MemoryAllocationModule->MemoryAllocationHeader.MemoryLength      = ModuleLength;
  Hob.MemoryAllocationModule->MemoryAllocationHeader.MemoryType  = EfiConventionalMemory;

  Hob.MemoryAllocationModule->EntryPoint        = EntryPoint;

  Hob.MemoryAllocationModule++;
  HandOffHob.HandoffInformationTable->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) Hob.Raw;
  Hob = BuildHobEndOfHobList(Hob.Raw);
  HandOffHob.HandoffInformationTable->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) Hob.Raw;
  return EFI_SUCCESS;
}

EFI_STATUS
BuildHobResourceDescriptor (
  IN VOID *                       HobStart,
  IN EFI_RESOURCE_TYPE             ResourceType,
  IN EFI_RESOURCE_ATTRIBUTE_TYPE   ResourceAttribute,
  IN EFI_PHYSICAL_ADDRESS        PhysicalStart,
  IN UINT64                      NumberOfBytes
  )
/*++

Routine Description:

  Builds a HOB that describes a chunck of system memory

Arguments:

  HobStart          - Start pointer of hob list

  ResourceType      - The type of memory described by this HOB

  ResourceAttribute - The memory attributes of the memory described by this HOB

  PhysicalStart   - The 64 bit physical address of memory described by this HOB

  NumberOfBytes   - The length of the memoty described by this HOB in bytes

Returns:

  EFI_SUCCESS
  EFI_NOT_AVAILABLE_YET

--*/
{
  EFI_PEI_HOB_POINTERS        Hob;
  EFI_PEI_HOB_POINTERS        HandOffHob;
  
  HandOffHob.Raw = HobStart;
  Hob.Raw = (VOID *)(UINTN)(HandOffHob.HandoffInformationTable->EfiEndOfHobList);
  
  Hob.Header->HobType   = EFI_HOB_TYPE_RESOURCE_DESCRIPTOR;
  Hob.Header->HobLength = sizeof(EFI_HOB_RESOURCE_DESCRIPTOR);

  Hob.ResourceDescriptor->ResourceType          = ResourceType;
  Hob.ResourceDescriptor->ResourceAttribute     = ResourceAttribute;
  Hob.ResourceDescriptor->PhysicalStart = PhysicalStart;
  Hob.ResourceDescriptor->ResourceLength = NumberOfBytes; 

  Hob.ResourceDescriptor++;
  HandOffHob.HandoffInformationTable->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) Hob.Raw;
  Hob = BuildHobEndOfHobList(Hob.Raw);
  HandOffHob.HandoffInformationTable->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) Hob.Raw;
  return EFI_SUCCESS;
}

EFI_STATUS
BuildHobGuidType (
  IN VOID                        *HobStart,
  IN EFI_GUID                    *Guid,
  IN VOID                        *Buffer,
  IN UINTN                       BufferSize
  )
/*++

Routine Description:

  Builds a custom HOB that is tagged with a GUID for identification

Arguments:

  HobStart    - Start pointer of hob list

  Guid        - The GUID of the custome HOB type

  Buffer      - A pointer to the data for the custom HOB type

  BufferSize  - The size in byte of BufferSize

Returns:

  EFI_SUCCESS
  EFI_NOT_AVAILABLE_YET

--*/
{
  EFI_PEI_HOB_POINTERS        Hob;
  EFI_PEI_HOB_POINTERS        HandOffHob;
  UINTN                   Length;
     
  
  HandOffHob.Raw = HobStart;
  Hob.Raw = (VOID *)(UINTN)HandOffHob.HandoffInformationTable->EfiEndOfHobList;