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Identical code for different branches (CWE 398) Untrusted loop bound (CWE 606) Signed-off-by: Kevin Tsai <kevin.tsai@intel.com>
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/** @file
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This file provides some helper functions via run time service support
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specific to Memory device.
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Copyright (c) 2017, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/BaseLib.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/MemoryDeviceBlockIoLib.h>
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/**
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Initialize a Memory instance.
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@param[in] MemoryDevicePciBase The PCI base of the Memory flash device.
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@param[in] DevInitPhase The initialization phase to prepare the device.
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@retval EFI_SUCCESS The driver is successfully initialized.
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@retval EFI_UNSUPPORTED The call is unsupported.
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@retval Others Can't initialize the Memory device.
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**/
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EFI_STATUS
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EFIAPI
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InitializeMemoryDevice (
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IN UINTN MemoryDevicePciBase,
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IN DEVICE_INIT_PHASE DevInitPhase
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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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This function reads blocks from the Memory slave device.
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@param[in] RegionType The region type of the Memory area to read from.
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@param[in] Address The block address in the RegionType to read from on the Memory.
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@param[in] BufferSize Size of the Buffer in bytes.
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@param[out] Buffer Pointer to caller-allocated buffer containing the data received during the Memory cycle.
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@retval EFI_SUCCESS Memory command completes successfully.
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**/
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EFI_STATUS
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EFIAPI
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MemoryDeviceReadBlocks (
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IN UINTN RegionType,
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IN EFI_PEI_LBA Address,
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IN UINTN BufferSize,
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OUT VOID *Buffer
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)
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{
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if ((Buffer == NULL) || (BufferSize == 0)) {
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return EFI_INVALID_PARAMETER;
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}
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CopyMem (Buffer, (VOID *) (UINTN)Address, BufferSize);
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return EFI_SUCCESS;
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}
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/**
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Gets a Memory device's media information.
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This function will provide the caller with the specified Memory device's media
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information. If the media changes, calling this function will update the media
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information accordingly.
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@param[in] RegionType The region type of the Memory area to access.
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@param[out] DevBlockInfo The Block Io information of the Memory device.
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@retval EFI_SUCCESS The Block Io information about the specified block device
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was obtained successfully.
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@retval EFI_UNSUPPORTED The call is unsupported.
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@retval EFI_DEVICE_ERROR Cannot get the media information due to a hardware
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error.
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**/
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EFI_STATUS
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EFIAPI
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MemoryDeviceGetMediaInfo (
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UINTN RegionType,
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DEVICE_BLOCK_INFO *DevBlockInfo
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)
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{
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if (DevBlockInfo == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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DevBlockInfo->BlockNum = 0x100000000;
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DevBlockInfo->BlockSize = RAM_BLOCK_SIZE;
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return EFI_SUCCESS;
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}
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