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836942fbad
Remove unnecessary check in API MmIsBufferOutsideMmValid of StandaloneMmMemLib. The API is used to check if a input buffer is outside MMRAM and inside a valid non-MMRAM range. Previously, the API only checks if the input buffer is overlapped with MMRAM range. In the last commit, we add logic to check if the input buffer is inside valid non-MMRAM ranges reported by the resource HOB. Since the resource HOB only covers valid non-MMRAM ranges, we doesn't need to check if the input buffer is inside the MMRAM anymore. Signed-off-by: Dun Tan <dun.tan@intel.com>
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/** @file
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Internal ARCH Specific file of MM memory check library.
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MM memory check library implementation. This library consumes MM_ACCESS_PROTOCOL
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to get MMRAM information. In order to use this library instance, the platform should produce
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all MMRAM range via MM_ACCESS_PROTOCOL, including the range for firmware (like MM Core
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and MM driver) and/or specific dedicated hardware.
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Copyright (c) 2015 - 2024, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2016 - 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 "StandaloneMmMemLibInternal.h"
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//
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// Maximum support address used to check input buffer
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//
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extern EFI_PHYSICAL_ADDRESS mMmMemLibInternalMaximumSupportAddress;
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/**
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Calculate and save the maximum support address.
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**/
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VOID
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MmMemLibCalculateMaximumSupportAddress (
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VOID
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)
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{
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mMmMemLibInternalMaximumSupportAddress = MAX_ALLOC_ADDRESS;
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DEBUG ((DEBUG_INFO, "mMmMemLibInternalMaximumSupportAddress = 0x%lx\n", mMmMemLibInternalMaximumSupportAddress));
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}
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/**
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Initialize valid non-Mmram Ranges from Resource HOB.
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**/
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VOID
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MmMemLibInitializeValidNonMmramRanges (
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VOID
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)
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{
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// Not implemented for AARCH64.
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}
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/**
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Deinitialize cached non-Mmram Ranges.
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**/
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VOID
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MmMemLibFreeValidNonMmramRanges (
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VOID
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)
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{
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// Not implemented for AARCH64.
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}
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/**
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This function check if the buffer is valid non-MMRAM memory range.
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@param[in] Buffer The buffer start address to be checked.
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@param[in] Length The buffer length to be checked.
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@retval TRUE This buffer is valid non-MMRAM memory range.
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@retval FALSE This buffer is not valid non-MMRAM memory range.
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**/
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BOOLEAN
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MmMemLibIsValidNonMmramRange (
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IN EFI_PHYSICAL_ADDRESS Buffer,
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IN UINT64 Length
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)
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{
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return TRUE;
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}
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