mirror of https://github.com/acidanthera/audk.git
59 lines
1.6 KiB
C
59 lines
1.6 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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SPDX-License-Identifier: BSD-2-Clause-Patent
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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 <Guid/MemoryAllocationHob.h>
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//
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// Cache copy of HobList pointer.
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//
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extern VOID *gHobList;
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EFI_HOB_HANDOFF_INFO_TABLE*
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HobConstructor (
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IN VOID *EfiMemoryBegin,
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IN UINTN EfiMemoryLength,
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IN VOID *EfiFreeMemoryBottom,
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IN VOID *EfiFreeMemoryTop
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)
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{
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EFI_HOB_HANDOFF_INFO_TABLE *Hob;
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EFI_HOB_GENERIC_HEADER *HobEnd;
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Hob = EfiFreeMemoryBottom;
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HobEnd = (EFI_HOB_GENERIC_HEADER *)(Hob+1);
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Hob->Header.HobType = EFI_HOB_TYPE_HANDOFF;
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Hob->Header.HobLength = sizeof (EFI_HOB_HANDOFF_INFO_TABLE);
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Hob->Header.Reserved = 0;
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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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Hob->Version = EFI_HOB_HANDOFF_TABLE_VERSION;
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Hob->BootMode = BOOT_WITH_FULL_CONFIGURATION;
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Hob->EfiMemoryTop = (UINTN)EfiMemoryBegin + EfiMemoryLength;
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Hob->EfiMemoryBottom = (UINTN)EfiMemoryBegin;
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Hob->EfiFreeMemoryTop = (UINTN)EfiFreeMemoryTop;
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Hob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS)(UINTN)(HobEnd+1);
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Hob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS)(UINTN)HobEnd;
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gHobList = Hob;
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return Hob;
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}
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