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/** @file NorFlashBlockIoDxe.c
Copyright (c) 2011-2013, ARM Ltd. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Library/BaseMemoryLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include "NorFlash.h"
//
// BlockIO Protocol function EFI_BLOCK_IO_PROTOCOL.Reset
//
EFI_STATUS
EFIAPI
NorFlashBlockIoReset (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
)
{
NOR_FLASH_INSTANCE *Instance;
Instance = INSTANCE_FROM_BLKIO_THIS (This);
DEBUG ((DEBUG_BLKIO, "NorFlashBlockIoReset(MediaId=0x%x)\n", This->Media->MediaId));
return NorFlashReset (Instance);
}
//
// BlockIO Protocol function EFI_BLOCK_IO_PROTOCOL.ReadBlocks
//
EFI_STATUS
EFIAPI
NorFlashBlockIoReadBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA Lba,
IN UINTN BufferSizeInBytes,
OUT VOID *Buffer
)
{
NOR_FLASH_INSTANCE *Instance;
EFI_STATUS Status;
EFI_BLOCK_IO_MEDIA *Media;
if (This == NULL) {
return EFI_INVALID_PARAMETER;
}
Instance = INSTANCE_FROM_BLKIO_THIS (This);
Media = This->Media;
DEBUG ((DEBUG_BLKIO, "NorFlashBlockIoReadBlocks(MediaId=0x%x, Lba=%ld, BufferSize=0x%x bytes (%d kB), BufferPtr @ 0x%08x)\n", MediaId, Lba, BufferSizeInBytes, BufferSizeInBytes, Buffer));
if (!Media) {
Status = EFI_INVALID_PARAMETER;
} else if (!Media->MediaPresent) {
Status = EFI_NO_MEDIA;
} else if (Media->MediaId != MediaId) {
Status = EFI_MEDIA_CHANGED;
} else if ((Media->IoAlign > 2) && (((UINTN)Buffer & (Media->IoAlign - 1)) != 0)) {
Status = EFI_INVALID_PARAMETER;
} else {
Status = NorFlashReadBlocks (Instance, Lba, BufferSizeInBytes, Buffer);
}
return Status;
}
//
// BlockIO Protocol function EFI_BLOCK_IO_PROTOCOL.WriteBlocks
//
EFI_STATUS
EFIAPI
NorFlashBlockIoWriteBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN EFI_LBA Lba,
IN UINTN BufferSizeInBytes,
IN VOID *Buffer
)
{
NOR_FLASH_INSTANCE *Instance;
EFI_STATUS Status;
Instance = INSTANCE_FROM_BLKIO_THIS (This);
DEBUG ((DEBUG_BLKIO, "NorFlashBlockIoWriteBlocks(MediaId=0x%x, Lba=%ld, BufferSize=0x%x bytes, BufferPtr @ 0x%08x)\n", MediaId, Lba, BufferSizeInBytes, Buffer));
if ( !This->Media->MediaPresent ) {
Status = EFI_NO_MEDIA;
} else if ( This->Media->MediaId != MediaId ) {
Status = EFI_MEDIA_CHANGED;
} else if ( This->Media->ReadOnly ) {
Status = EFI_WRITE_PROTECTED;
} else {
Status = NorFlashWriteBlocks (Instance, Lba, BufferSizeInBytes, Buffer);
}
return Status;
}
//
// BlockIO Protocol function EFI_BLOCK_IO_PROTOCOL.FlushBlocks
//
EFI_STATUS
EFIAPI
NorFlashBlockIoFlushBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This
)
{
// No Flush required for the NOR Flash driver
// because cache operations are not permitted.
DEBUG ((DEBUG_BLKIO, "NorFlashBlockIoFlushBlocks: Function NOT IMPLEMENTED (not required).\n"));
// Nothing to do so just return without error
return EFI_SUCCESS;
}
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