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StandaloneMmPkg/HobLib: Add HOB Library for management mode.

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The Standalone MM environment is initialized during the SEC phase on ARM
Standard Platforms. The MM Core driver implements an entry point module
which is architecture specific and runs prior to the generic core driver
code. The former creates a Hob list that the latter consumes. This
happens in the same phase.

This patch implements a Hob library that can be used by the entry point
module to produce a Hob list and by the core driver code to consume it.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Signed-off-by: Sughosh Ganu <sughosh.ganu@arm.com>
This commit is contained in:
Supreeth Venkatesh
2018-07-13 23:05:25 +08:00
committed by Jiewen Yao
parent 2c868eef73
commit 70a51d7187
3 changed files with 719 additions and 0 deletions
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64
StandaloneMmPkg/Library/StandaloneMmCoreHobLib/AArch64/StandaloneMmCoreHobLibInternal.c Normal file
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/** @file
HOB Library implementation for Standalone MM Core.
Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2017 - 2018, ARM Limited. All rights reserved.<BR>
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.
**/
#include <PiMm.h>
#include <Library/HobLib.h>
#include <Library/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Guid/MemoryAllocationHob.h>
//
// Cache copy of HobList pointer.
//
extern VOID *gHobList;
EFI_HOB_HANDOFF_INFO_TABLE*
HobConstructor (
IN VOID *EfiMemoryBegin,
IN UINTN EfiMemoryLength,
IN VOID *EfiFreeMemoryBottom,
IN VOID *EfiFreeMemoryTop
)
{
EFI_HOB_HANDOFF_INFO_TABLE *Hob;
EFI_HOB_GENERIC_HEADER *HobEnd;
Hob = EfiFreeMemoryBottom;
HobEnd = (EFI_HOB_GENERIC_HEADER *)(Hob+1);
Hob->Header.HobType = EFI_HOB_TYPE_HANDOFF;
Hob->Header.HobLength = sizeof (EFI_HOB_HANDOFF_INFO_TABLE);
Hob->Header.Reserved = 0;
HobEnd->HobType = EFI_HOB_TYPE_END_OF_HOB_LIST;
HobEnd->HobLength = sizeof (EFI_HOB_GENERIC_HEADER);
HobEnd->Reserved = 0;
Hob->Version = EFI_HOB_HANDOFF_TABLE_VERSION;
Hob->BootMode = BOOT_WITH_FULL_CONFIGURATION;
Hob->EfiMemoryTop = (UINTN)EfiMemoryBegin + EfiMemoryLength;
Hob->EfiMemoryBottom = (UINTN)EfiMemoryBegin;
Hob->EfiFreeMemoryTop = (UINTN)EfiFreeMemoryTop;
Hob->EfiFreeMemoryBottom = (EFI_PHYSICAL_ADDRESS)(UINTN)(HobEnd+1);
Hob->EfiEndOfHobList = (EFI_PHYSICAL_ADDRESS)(UINTN)HobEnd;
gHobList = Hob;
return Hob;
}