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ArmPlatformPkg/Drivers/NorFlashDxe: Directly implement DiskIO protocol

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This improves performance by accessing NOR with the fine granularity that
the hardware permits, rather than the coarse granularity assumed by DiskIoDxe.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Brendan Jackman <brendan.jackman@arm.com>
Reviewed-by: Olivier Martin <olivier.martin@arm.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15502 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Brendan Jackman
2014-05-08 14:52:12 +00:00
committed by oliviermartin
parent e691183822
commit 452a9ee1a6
4 changed files with 399 additions and 214 deletions
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55
ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe.h
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@@ -22,6 +22,7 @@
#include <Guid/EventGroup.h>
#include <Protocol/BlockIo.h>
#include <Protocol/DiskIo.h>
#include <Protocol/FirmwareVolumeBlock.h>
#include <Library/DebugLib.h>
@@ -117,6 +118,7 @@
#define NOR_FLASH_SIGNATURE SIGNATURE_32('n', 'o', 'r', '0')
#define INSTANCE_FROM_FVB_THIS(a) CR(a, NOR_FLASH_INSTANCE, FvbProtocol, NOR_FLASH_SIGNATURE)
#define INSTANCE_FROM_BLKIO_THIS(a) CR(a, NOR_FLASH_INSTANCE, BlockIoProtocol, NOR_FLASH_SIGNATURE)
#define INSTANCE_FROM_DISKIO_THIS(a) CR(a, NOR_FLASH_INSTANCE, DiskIoProtocol, NOR_FLASH_SIGNATURE)
typedef struct _NOR_FLASH_INSTANCE NOR_FLASH_INSTANCE;
@@ -141,10 +143,11 @@ struct _NOR_FLASH_INSTANCE {
EFI_BLOCK_IO_PROTOCOL BlockIoProtocol;
EFI_BLOCK_IO_MEDIA Media;
EFI_DISK_IO_PROTOCOL DiskIoProtocol;
BOOLEAN SupportFvb;
EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL FvbProtocol;
VOID* FvbBuffer;
VOID* ShadowBuffer;
NOR_FLASH_DEVICE_PATH DevicePath;
};
@@ -210,6 +213,31 @@ NorFlashBlockIoFlushBlocks (
IN EFI_BLOCK_IO_PROTOCOL *This
);
//
// DiskIO Protocol function EFI_DISK_IO_PROTOCOL.ReadDisk
//
EFI_STATUS
EFIAPI
NorFlashDiskIoReadDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
OUT VOID *Buffer
);
//
// DiskIO Protocol function EFI_DISK_IO_PROTOCOL.WriteDisk
//
EFI_STATUS
EFIAPI
NorFlashDiskIoWriteDisk (
IN EFI_DISK_IO_PROTOCOL *This,
IN UINT32 MediaId,
IN UINT64 Offset,
IN UINTN BufferSize,
IN VOID *Buffer
);
//
// NorFlashFvbDxe.c
@@ -290,10 +318,11 @@ NorFlashUnlockAndEraseSingleBlock (
EFI_STATUS
NorFlashWriteSingleBlock (
IN NOR_FLASH_INSTANCE *Instance,
IN EFI_LBA Lba,
IN UINT32 *DataBuffer,
IN UINT32 BlockSizeInWords
IN NOR_FLASH_INSTANCE *Instance,
IN EFI_LBA Lba,
IN UINTN Offset,
IN OUT UINTN *NumBytes,
IN UINT8 *Buffer
);
EFI_STATUS
@@ -304,13 +333,6 @@ NorFlashWriteBlocks (
IN VOID *Buffer
);
EFI_STATUS
NorFlashWriteSingleWord (
IN NOR_FLASH_INSTANCE *Instance,
IN UINTN WordAddress,
IN UINT32 WriteData
);
EFI_STATUS
NorFlashReadBlocks (
IN NOR_FLASH_INSTANCE *Instance,
@@ -328,6 +350,15 @@ NorFlashRead (
OUT VOID *Buffer
);
EFI_STATUS
NorFlashWrite (
IN NOR_FLASH_INSTANCE *Instance,
IN EFI_LBA Lba,
IN UINTN Offset,
IN OUT UINTN *NumBytes,
IN UINT8 *Buffer
);
EFI_STATUS
NorFlashReset (
IN NOR_FLASH_INSTANCE *Instance