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/** @file NorFlashBlockIoDxe.c
Copyright (c) 2010, ARM Ltd. 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/DebugLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include "NorFlashDxe.h"
EFI_STATUS
EFIAPI
NorFlashBlkIoInitialize (
IN NOR_FLASH_INSTANCE* Instance
) {
UINT32 Reply;
EFI_STATUS Status = EFI_SUCCESS;
DEBUG((DEBUG_BLKIO,"NorFlashBlkIoInitialize()\n"));
//
// Verify that there is a physical hardware device where we expect it to be.
//
// Read a specific CFI query that returns back "QRY"
// This ensures that there is really a device present there
SEND_NOR_COMMAND( Instance->BaseAddress, 0, P30_CMD_READ_CFI_QUERY );
// Read CFI 'QRY' data
Status = NorFlashReadCfiData( Instance->BaseAddress,
P30_CFI_ADDR_QUERY_UNIQUE_QRY,
3,
&Reply
);
if (EFI_ERROR(Status)) {
goto EXIT;
}
if ( Reply != CFI_QRY ) {
DEBUG((EFI_D_ERROR, "NorFlashBlkIoInitialize: CFI QRY=0x%x (expected 0x595251)\n", Reply));
Status = EFI_DEVICE_ERROR;
goto EXIT;
}
EXIT:
// Reset the device
Status = NorFlashBlockIoReset( &Instance->BlockIoProtocol, FALSE );
if (EFI_ERROR(Status)) {
goto EXIT;
}
Instance->Initialized = TRUE;
return EFI_SUCCESS;
}
//
// BlockIO Protocol function EFI_BLOCK_IO_PROTOCOL.Reset
//
EFI_STATUS
EFIAPI
NorFlashBlockIoReset (
IN EFI_BLOCK_IO_PROTOCOL *This,
IN BOOLEAN ExtendedVerification
)
{
EFI_STATUS Status;
NOR_FLASH_INSTANCE *Instance;
Instance = INSTANCE_FROM_BLKIO_THIS(This);
DEBUG ((DEBUG_BLKIO, "NorFlashBlockIoReset(MediaId=0x%x)\n", This->Media->MediaId));
Status = NorFlashReset(Instance);
return Status;
}
//
// 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;
Instance = INSTANCE_FROM_BLKIO_THIS(This);
DEBUG ((DEBUG_BLKIO, "NorFlashBlockIoReadBlocks(MediaId=0x%x, Lba=%ld, BufferSize=0x%x bytes (%d kB), BufferPtr @ 0x%08x)\n", MediaId, Lba, BufferSizeInBytes, Buffer));
return NorFlashReadBlocks(Instance,Lba,BufferSizeInBytes,Buffer);
}
//
// 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;
Instance = INSTANCE_FROM_BLKIO_THIS(This);
DEBUG ((DEBUG_BLKIO, "NorFlashBlockIoWriteBlocks(MediaId=0x%x, Lba=%ld, BufferSize=0x%x bytes (%d kB), BufferPtr @ 0x%08x)\n", MediaId, Lba, BufferSizeInBytes, Buffer));
return NorFlashWriteBlocks(Instance,Lba,BufferSizeInBytes,Buffer);
}
//
// 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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