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author | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-06-03 09:35:57 +0000 |
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committer | oliviermartin <oliviermartin@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-06-03 09:35:57 +0000 |
commit | d5e12da4fea90f1293d4731aa8a5da0097f268d5 (patch) | |
tree | de08d65377d30ade6eedf5560d209c73d9b45080 /ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c | |
parent | ce9cc403bdd8f8d7f8aeebdac40485bf8e0d7be6 (diff) | |
download | edk2-platforms-d5e12da4fea90f1293d4731aa8a5da0097f268d5.tar.xz |
ArmPlatformPkg/NorFlashDxe: Move NorFlash driver from ArmVExpressPkg to ArmPlatformPkg
This NOR Flash driver can be reused for other platform (eg: ARM Realview EB).
To make this driver reusable on other platforms the NorFlashPlatformLib library
has been created to abstract the platform specific bits such as the pre-requirements
steps to the initialization and the geometry of the NOR Flash regions.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11746 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c')
-rw-r--r-- | ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c b/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c new file mode 100644 index 0000000000..17a5369968 --- /dev/null +++ b/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashBlockIoDxe.c @@ -0,0 +1,159 @@ +/** @file NorFlashBlockIoDxe.c + + Copyright (c) 2011, 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/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)) { + return Status; + } + + if (Reply != CFI_QRY) { + DEBUG((EFI_D_ERROR, "NorFlashBlkIoInitialize: CFI QRY=0x%x (expected 0x595251)\n", Reply)); + return EFI_DEVICE_ERROR; + } + + // Reset the device + Status = NorFlashBlockIoReset (&Instance->BlockIoProtocol, FALSE); + if (EFI_ERROR(Status)) { + return Status; + } + + 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 + ) +{ + 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; + + 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)); + + if( !This->Media->MediaPresent ) { + Status = EFI_NO_MEDIA; + } else if( This->Media->MediaId != MediaId ) { + Status = EFI_MEDIA_CHANGED; + } 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 (%d kB), 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; +} |