mirror of https://github.com/acidanthera/audk.git
650 lines
19 KiB
C
650 lines
19 KiB
C
/** @file
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HOB Library implementation for Standalone MM Core.
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Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.<BR>
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Copyright (c) 2018, Linaro, Ltd. All rights reserved.<BR>
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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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**/
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#include <PiMm.h>
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#include <Library/HobLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MmServicesTableLib.h>
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//
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// Cache copy of HobList pointer.
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//
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STATIC VOID *gHobList = NULL;
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/**
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The constructor function caches the pointer to HOB list.
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The constructor function gets the start address of HOB list from system configuration table.
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It will ASSERT() if that operation fails and it will always return EFI_SUCCESS.
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@param ImageHandle The firmware allocated handle for the image.
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@param MmSystemTable A pointer to the MM System Table.
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@retval EFI_SUCCESS The constructor successfully gets HobList.
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@retval Other value The constructor can't get HobList.
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**/
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EFI_STATUS
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EFIAPI
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HobLibConstructor (
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IN EFI_HANDLE ImageHandle,
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IN EFI_MM_SYSTEM_TABLE *MmSystemTable
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)
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{
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UINTN Index;
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for (Index = 0; Index < gMmst->NumberOfTableEntries; Index++) {
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if (CompareGuid (&gEfiHobListGuid, &gMmst->MmConfigurationTable[Index].VendorGuid)) {
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gHobList = gMmst->MmConfigurationTable[Index].VendorTable;
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break;
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}
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}
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return EFI_SUCCESS;
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}
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/**
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Returns the pointer to the HOB list.
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This function returns the pointer to first HOB in the list.
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If the pointer to the HOB list is NULL, then ASSERT().
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@return 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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UINTN Index;
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if (gHobList == NULL) {
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for (Index = 0; Index < gMmst->NumberOfTableEntries; Index++) {
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if (CompareGuid (&gEfiHobListGuid, &gMmst->MmConfigurationTable[Index].VendorGuid)) {
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gHobList = gMmst->MmConfigurationTable[Index].VendorTable;
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break;
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}
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}
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}
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ASSERT (gHobList != NULL);
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return gHobList;
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}
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/**
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Returns the next instance of a HOB type from the starting HOB.
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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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In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
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unconditionally: it returns HobStart back if HobStart itself meets the requirement;
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caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.
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If HobStart is NULL, then ASSERT().
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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 until end of list or matching type is 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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Returns the first instance of a HOB type among the whole HOB list.
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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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If the pointer to the HOB list is NULL, then ASSERT().
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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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Returns the next instance of the matched GUID HOB from the starting HOB.
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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 such a HOB from the starting HOB pointer does not exist, it will return NULL.
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Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
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to extract the data section and its size information, respectively.
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In contrast with macro GET_NEXT_HOB(), this function does not skip the starting HOB pointer
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unconditionally: it returns HobStart back if HobStart itself meets the requirement;
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caller is required to use GET_NEXT_HOB() if it wishes to skip current HobStart.
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If Guid is NULL, then ASSERT().
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If HobStart is NULL, then ASSERT().
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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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Returns the first instance of the matched GUID HOB among the whole HOB list.
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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 such a HOB from the starting HOB pointer does not exist, it will return NULL.
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Caller is required to apply GET_GUID_HOB_DATA () and GET_GUID_HOB_DATA_SIZE ()
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to extract the data section and its size information, respectively.
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If the pointer to the HOB list is NULL, then ASSERT().
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If Guid is NULL, then ASSERT().
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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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Get the system boot mode from the HOB list.
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This function returns the system boot mode information from the
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PHIT HOB in HOB list.
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If the pointer to the HOB list is NULL, then ASSERT().
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@param VOID
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@return The Boot Mode.
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**/
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EFI_BOOT_MODE
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EFIAPI
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GetBootModeHob (
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VOID
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)
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{
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EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;
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HandOffHob = (EFI_HOB_HANDOFF_INFO_TABLE *) GetHobList ();
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return HandOffHob->BootMode;
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}
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VOID *
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CreateHob (
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IN UINT16 HobType,
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IN UINT16 HobLength
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)
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{
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EFI_HOB_HANDOFF_INFO_TABLE *HandOffHob;
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EFI_HOB_GENERIC_HEADER *HobEnd;
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EFI_PHYSICAL_ADDRESS FreeMemory;
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VOID *Hob;
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HandOffHob = GetHobList ();
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HobLength = (UINT16)((HobLength + 0x7) & (~0x7));
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FreeMemory = HandOffHob->EfiFreeMemoryTop - HandOffHob->EfiFreeMemoryBottom;
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if (FreeMemory < HobLength) {
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return NULL;
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}
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Hob = (VOID*) (UINTN) HandOffHob->EfiEndOfHobList;
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((EFI_HOB_GENERIC_HEADER*) Hob)->HobType = HobType;
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((EFI_HOB_GENERIC_HEADER*) Hob)->HobLength = HobLength;
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((EFI_HOB_GENERIC_HEADER*) Hob)->Reserved = 0;
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HobEnd = (EFI_HOB_GENERIC_HEADER*) ((UINTN)Hob + HobLength);
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HandOffHob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;
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HobEnd->HobType = EFI_HOB_TYPE_END_OF_HOB_LIST;
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HobEnd->HobLength = sizeof(EFI_HOB_GENERIC_HEADER);
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HobEnd->Reserved = 0;
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HobEnd++;
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HandOffHob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS) (UINTN) HobEnd;
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return Hob;
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}
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/**
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Builds a HOB for a loaded PE32 module.
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This function builds a HOB for a loaded PE32 module.
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If ModuleName is NULL, then ASSERT().
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If there is no additional space for HOB creation, then ASSERT().
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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 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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ASSERT (((MemoryAllocationModule & (EFI_PAGE_SIZE - 1)) == 0) &&
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((ModuleLength & (EFI_PAGE_SIZE - 1)) == 0));
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Hob = CreateHob (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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//
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// Zero the reserved space to match HOB spec
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//
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ZeroMem (Hob->MemoryAllocationHeader.Reserved, sizeof (Hob->MemoryAllocationHeader.Reserved));
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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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This function builds a HOB that describes a chunk of system memory.
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If there is no additional space for HOB creation, then ASSERT().
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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 = CreateHob (EFI_HOB_TYPE_RESOURCE_DESCRIPTOR, sizeof (EFI_HOB_RESOURCE_DESCRIPTOR));
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ASSERT(Hob != NULL);
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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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Builds a GUID HOB with a certain data length.
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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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The HOB Header and Name field is already stripped.
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If Guid is NULL, then ASSERT().
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If there is no additional space for HOB creation, then ASSERT().
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If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
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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 = CreateHob (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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Copies a data buffer to a newly-built HOB.
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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 the GUID HOB data.
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The HOB Header and Name field is already stripped.
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If Guid is NULL, then ASSERT().
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If Data is NULL and DataLength > 0, then ASSERT().
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If there is no additional space for HOB creation, then ASSERT().
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If DataLength >= (0x10000 - sizeof (EFI_HOB_GUID_TYPE)), then ASSERT().
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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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ASSERT (Data != NULL || DataLength == 0);
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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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This function builds a Firmware Volume HOB.
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If there is no additional space for HOB creation, then ASSERT().
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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 = CreateHob (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 EFI_HOB_TYPE_FV2 HOB.
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This function builds a EFI_HOB_TYPE_FV2 HOB.
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If there is no additional space for HOB creation, then ASSERT().
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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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@param FvName The name of the Firmware Volume.
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@param FileName The name of the file.
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**/
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VOID
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EFIAPI
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BuildFv2Hob (
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IN EFI_PHYSICAL_ADDRESS BaseAddress,
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IN UINT64 Length,
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IN CONST EFI_GUID *FvName,
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IN CONST EFI_GUID *FileName
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)
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{
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EFI_HOB_FIRMWARE_VOLUME2 *Hob;
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Hob = CreateHob (EFI_HOB_TYPE_FV2, sizeof (EFI_HOB_FIRMWARE_VOLUME2));
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Hob->BaseAddress = BaseAddress;
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Hob->Length = Length;
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CopyGuid (&Hob->FvName, FvName);
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CopyGuid (&Hob->FileName, FileName);
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}
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/**
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Builds a HOB for the CPU.
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This function builds a HOB for the CPU.
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If there is no additional space for HOB creation, then ASSERT().
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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 = CreateHob (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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// Zero the reserved space to match HOB spec
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//
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ZeroMem (Hob->Reserved, sizeof (Hob->Reserved));
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}
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/**
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Builds a HOB for the memory allocation.
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This function builds a HOB for the memory allocation.
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If there is no additional space for HOB creation, then ASSERT().
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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
|
|
BuildMemoryAllocationHob (
|
|
IN EFI_PHYSICAL_ADDRESS BaseAddress,
|
|
IN UINT64 Length,
|
|
IN EFI_MEMORY_TYPE MemoryType
|
|
)
|
|
{
|
|
EFI_HOB_MEMORY_ALLOCATION *Hob;
|
|
|
|
ASSERT (((BaseAddress & (EFI_PAGE_SIZE - 1)) == 0) &&
|
|
((Length & (EFI_PAGE_SIZE - 1)) == 0));
|
|
|
|
Hob = CreateHob (EFI_HOB_TYPE_MEMORY_ALLOCATION, sizeof (EFI_HOB_MEMORY_ALLOCATION));
|
|
|
|
ZeroMem (&(Hob->AllocDescriptor.Name), sizeof (EFI_GUID));
|
|
Hob->AllocDescriptor.MemoryBaseAddress = BaseAddress;
|
|
Hob->AllocDescriptor.MemoryLength = Length;
|
|
Hob->AllocDescriptor.MemoryType = MemoryType;
|
|
//
|
|
// Zero the reserved space to match HOB spec
|
|
//
|
|
ZeroMem (Hob->AllocDescriptor.Reserved, sizeof (Hob->AllocDescriptor.Reserved));
|
|
}
|
|
|
|
/**
|
|
Builds a HOB that describes a chunk of system memory with Owner GUID.
|
|
|
|
This function builds a HOB that describes a chunk of system memory.
|
|
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.
|
|
@param OwnerGUID GUID for the owner of this resource.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
BuildResourceDescriptorWithOwnerHob (
|
|
IN EFI_RESOURCE_TYPE ResourceType,
|
|
IN EFI_RESOURCE_ATTRIBUTE_TYPE ResourceAttribute,
|
|
IN EFI_PHYSICAL_ADDRESS PhysicalStart,
|
|
IN UINT64 NumberOfBytes,
|
|
IN EFI_GUID *OwnerGUID
|
|
)
|
|
{
|
|
ASSERT (FALSE);
|
|
}
|
|
|
|
/**
|
|
Builds a Capsule Volume HOB.
|
|
|
|
This function builds a Capsule Volume HOB.
|
|
If the platform does not support Capsule Volume HOBs, then ASSERT().
|
|
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
|
|
)
|
|
{
|
|
ASSERT (FALSE);
|
|
}
|
|
|
|
|
|
/**
|
|
Builds a HOB for the BSP store.
|
|
|
|
This function builds a HOB for BSP store.
|
|
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
|
|
)
|
|
{
|
|
ASSERT (FALSE);
|
|
}
|
|
|
|
/**
|
|
Builds a HOB for the Stack.
|
|
|
|
This function builds a HOB for the stack.
|
|
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
|
|
)
|
|
{
|
|
ASSERT (FALSE);
|
|
}
|