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StandaloneMmPkg/MemLib: Add Standalone MM instance of memory check library.

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MM memory check library library implementation. This library consumes
MM_ACCESS_PROTOCOL to get MMRAM information. In order to use this
library instance, the platform should produce all MMRAM range via
MM_ACCESS_PROTOCOL, including the range for firmware (like MM Core
and MM driver) and/or specific dedicated hardware.

This patch provides services for MM Memory Operation.
The management mode Mem Library provides function for checking if buffer
is outside MMRAM and valid. It also provides functions for copy data
from MMRAM to non-MMRAM, from non-MMRAM to MMRAM,
from non-MMRAM to non-MMRAM, or set data in non-MMRAM.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Achin Gupta <achin.gupta@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 23:05:23 +08:00
committed by Jiewen Yao
parent e85162acb9
commit 880086a2b5
4 changed files with 508 additions and 0 deletions
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49
StandaloneMmPkg/Library/StandaloneMmMemLib/AArch64/StandaloneMmMemLibInternal.c Normal file
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/** @file
Internal ARCH Specific file of MM memory check library.
MM memory check library implementation. This library consumes MM_ACCESS_PROTOCOL
to get MMRAM information. In order to use this library instance, the platform should produce
all MMRAM range via MM_ACCESS_PROTOCOL, including the range for firmware (like MM Core
and MM driver) and/or specific dedicated hardware.
Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2016 - 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 <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
//
// Maximum support address used to check input buffer
//
extern EFI_PHYSICAL_ADDRESS mMmMemLibInternalMaximumSupportAddress;
/**
Calculate and save the maximum support address.
**/
VOID
MmMemLibInternalCalculateMaximumSupportAddress (
VOID
)
{
UINT8 PhysicalAddressBits;
PhysicalAddressBits = 36;
//
// Save the maximum support address in one global variable
//
mMmMemLibInternalMaximumSupportAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)(LShiftU64 (1, PhysicalAddressBits) - 1);
DEBUG ((DEBUG_INFO, "mMmMemLibInternalMaximumSupportAddress = 0x%lx\n", mMmMemLibInternalMaximumSupportAddress));
}