/** @file  NorFlash.h

  Copyright (c) 2011 - 2014, ARM Ltd. All rights reserved.<BR>

  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __NOR_FLASH_H__
#define __NOR_FLASH_H__


#include <Base.h>
#include <PiDxe.h>

#include <Guid/EventGroup.h>

#include <Protocol/BlockIo.h>
#include <Protocol/DiskIo.h>
#include <Protocol/FirmwareVolumeBlock.h>

#include <Library/DebugLib.h>
#include <Library/IoLib.h>
#include <Library/NorFlashPlatformLib.h>
#include <Library/UefiLib.h>
#include <Library/UefiRuntimeLib.h>

#define NOR_FLASH_ERASE_RETRY                     10

// Device access macros
// These are necessary because we use 2 x 16bit parts to make up 32bit data

#define HIGH_16_BITS                              0xFFFF0000
#define LOW_16_BITS                               0x0000FFFF
#define LOW_8_BITS                                0x000000FF

#define FOLD_32BIT_INTO_16BIT(value)              ( ( value >> 16 ) | ( value & LOW_16_BITS ) )

#define GET_LOW_BYTE(value)                       ( value & LOW_8_BITS )
#define GET_HIGH_BYTE(value)                      ( GET_LOW_BYTE( value >> 16 ) )

// Each command must be sent simultaneously to both chips,
// i.e. at the lower 16 bits AND at the higher 16 bits
#define CREATE_NOR_ADDRESS(BaseAddr,OffsetAddr)   ((BaseAddr) + ((OffsetAddr) << 2))
#define CREATE_DUAL_CMD(Cmd)                      ( ( Cmd << 16) | ( Cmd & LOW_16_BITS) )
#define SEND_NOR_COMMAND(BaseAddr,Offset,Cmd) MmioWrite32 (CREATE_NOR_ADDRESS(BaseAddr,Offset), CREATE_DUAL_CMD(Cmd))
#define GET_NOR_BLOCK_ADDRESS(BaseAddr,Lba,LbaSize)( BaseAddr + (UINTN)((Lba) * LbaSize) )

// Status Register Bits
#define P30_SR_BIT_WRITE                          (BIT7 << 16 | BIT7)
#define P30_SR_BIT_ERASE_SUSPEND                  (BIT6 << 16 | BIT6)
#define P30_SR_BIT_ERASE                          (BIT5 << 16 | BIT5)
#define P30_SR_BIT_PROGRAM                        (BIT4 << 16 | BIT4)
#define P30_SR_BIT_VPP                            (BIT3 << 16 | BIT3)
#define P30_SR_BIT_PROGRAM_SUSPEND                (BIT2 << 16 | BIT2)
#define P30_SR_BIT_BLOCK_LOCKED                   (BIT1 << 16 | BIT1)
#define P30_SR_BIT_BEFP                           (BIT0 << 16 | BIT0)

// Device Commands for Intel StrataFlash(R) Embedded Memory (P30) Family

// On chip buffer size for buffered programming operations
// There are 2 chips, each chip can buffer up to 32 (16-bit)words, and each word is 2 bytes.
// Therefore the total size of the buffer is 2 x 32 x 2 = 128 bytes
#define P30_MAX_BUFFER_SIZE_IN_BYTES              ((UINTN)128)
#define P30_MAX_BUFFER_SIZE_IN_WORDS              (P30_MAX_BUFFER_SIZE_IN_BYTES/((UINTN)4))
#define MAX_BUFFERED_PROG_ITERATIONS              10000000
#define BOUNDARY_OF_32_WORDS                      0x7F

// CFI Addresses
#define P30_CFI_ADDR_QUERY_UNIQUE_QRY             0x10
#define P30_CFI_ADDR_VENDOR_ID                    0x13

// CFI Data
#define CFI_QRY                                   0x00595251

// READ Commands
#define P30_CMD_READ_DEVICE_ID                    0x0090
#define P30_CMD_READ_STATUS_REGISTER              0x0070
#define P30_CMD_CLEAR_STATUS_REGISTER             0x0050
#define P30_CMD_READ_ARRAY                        0x00FF
#define P30_CMD_READ_CFI_QUERY                    0x0098

// WRITE Commands
#define P30_CMD_WORD_PROGRAM_SETUP                0x0040
#define P30_CMD_ALTERNATE_WORD_PROGRAM_SETUP      0x0010
#define P30_CMD_BUFFERED_PROGRAM_SETUP            0x00E8
#define P30_CMD_BUFFERED_PROGRAM_CONFIRM          0x00D0
#define P30_CMD_BEFP_SETUP                        0x0080
#define P30_CMD_BEFP_CONFIRM                      0x00D0

// ERASE Commands
#define P30_CMD_BLOCK_ERASE_SETUP                 0x0020
#define P30_CMD_BLOCK_ERASE_CONFIRM               0x00D0

// SUSPEND Commands
#define P30_CMD_PROGRAM_OR_ERASE_SUSPEND          0x00B0
#define P30_CMD_SUSPEND_RESUME                    0x00D0

// BLOCK LOCKING / UNLOCKING Commands
#define P30_CMD_LOCK_BLOCK_SETUP                  0x0060
#define P30_CMD_LOCK_BLOCK                        0x0001
#define P30_CMD_UNLOCK_BLOCK                      0x00D0
#define P30_CMD_LOCK_DOWN_BLOCK                   0x002F

// PROTECTION Commands
#define P30_CMD_PROGRAM_PROTECTION_REGISTER_SETUP 0x00C0

// CONFIGURATION Commands
#define P30_CMD_READ_CONFIGURATION_REGISTER_SETUP 0x0060
#define P30_CMD_READ_CONFIGURATION_REGISTER       0x0003

#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;

#pragma pack (1)
typedef struct {
  VENDOR_DEVICE_PATH                  Vendor;
  UINT8                               Index;
  EFI_DEVICE_PATH_PROTOCOL            End;
} NOR_FLASH_DEVICE_PATH;
#pragma pack ()

struct _NOR_FLASH_INSTANCE {
  UINT32                              Signature;
  EFI_HANDLE                          Handle;

  UINTN                               DeviceBaseAddress;
  UINTN                               RegionBaseAddress;
  UINTN                               Size;
  EFI_LBA                             StartLba;

  EFI_BLOCK_IO_PROTOCOL               BlockIoProtocol;
  EFI_BLOCK_IO_MEDIA                  Media;
  EFI_DISK_IO_PROTOCOL                DiskIoProtocol;

  EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL FvbProtocol;
  VOID*                               ShadowBuffer;

  NOR_FLASH_DEVICE_PATH               DevicePath;
};

EFI_STATUS
NorFlashReadCfiData (
  IN  UINTN                   DeviceBaseAddress,
  IN  UINTN                   CFI_Offset,
  IN  UINT32                  NumberOfBytes,
  OUT UINT32                  *Data
  );

EFI_STATUS
NorFlashWriteBuffer (
  IN NOR_FLASH_INSTANCE     *Instance,
  IN UINTN                  TargetAddress,
  IN UINTN                  BufferSizeInBytes,
  IN UINT32                 *Buffer
  );

//
// BlockIO Protocol function EFI_BLOCK_IO_PROTOCOL.Reset
//
EFI_STATUS
EFIAPI
NorFlashBlockIoReset (
  IN EFI_BLOCK_IO_PROTOCOL    *This,
  IN BOOLEAN                  ExtendedVerification
  );

//
// 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
);

//
// 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
);

//
// BlockIO Protocol function EFI_BLOCK_IO_PROTOCOL.FlushBlocks
//
EFI_STATUS
EFIAPI
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
//

EFI_STATUS
EFIAPI
FvbGetAttributes(
  IN CONST  EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL     *This,
  OUT       EFI_FVB_ATTRIBUTES_2                    *Attributes
  );

EFI_STATUS
EFIAPI
FvbSetAttributes(
  IN CONST  EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL     *This,
  IN OUT    EFI_FVB_ATTRIBUTES_2                    *Attributes
  );

EFI_STATUS
EFIAPI
FvbGetPhysicalAddress(
  IN CONST  EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL     *This,
  OUT       EFI_PHYSICAL_ADDRESS                    *Address
  );

EFI_STATUS
EFIAPI
FvbGetBlockSize(
  IN CONST  EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL     *This,
  IN        EFI_LBA                                 Lba,
  OUT       UINTN                                   *BlockSize,
  OUT       UINTN                                   *NumberOfBlocks
  );

EFI_STATUS
EFIAPI
FvbRead(
  IN CONST  EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL     *This,
  IN        EFI_LBA                                 Lba,
  IN        UINTN                                   Offset,
  IN OUT    UINTN                                   *NumBytes,
  IN OUT    UINT8                                   *Buffer
  );

EFI_STATUS
EFIAPI
FvbWrite(
  IN CONST  EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL     *This,
  IN        EFI_LBA                                 Lba,
  IN        UINTN                                   Offset,
  IN OUT    UINTN                                   *NumBytes,
  IN        UINT8                                   *Buffer
  );

EFI_STATUS
EFIAPI
FvbEraseBlocks(
  IN CONST  EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL     *This,
  ...
  );

EFI_STATUS
ValidateFvHeader (
  IN  NOR_FLASH_INSTANCE *Instance
  );

EFI_STATUS
InitializeFvAndVariableStoreHeaders (
  IN NOR_FLASH_INSTANCE *Instance
  );

VOID
EFIAPI
FvbVirtualNotifyEvent (
  IN EFI_EVENT        Event,
  IN VOID             *Context
  );

//
// NorFlashDxe.c
//

EFI_STATUS
NorFlashWriteFullBlock (
  IN NOR_FLASH_INSTANCE     *Instance,
  IN EFI_LBA                Lba,
  IN UINT32                 *DataBuffer,
  IN UINT32                 BlockSizeInWords
  );

EFI_STATUS
NorFlashUnlockAndEraseSingleBlock (
  IN NOR_FLASH_INSTANCE     *Instance,
  IN UINTN                  BlockAddress
  );

EFI_STATUS
NorFlashCreateInstance (
  IN UINTN                  NorFlashDeviceBase,
  IN UINTN                  NorFlashRegionBase,
  IN UINTN                  NorFlashSize,
  IN UINT32                 Index,
  IN UINT32                 BlockSize,
  IN BOOLEAN                SupportFvb,
  OUT NOR_FLASH_INSTANCE**  NorFlashInstance
  );

EFI_STATUS
EFIAPI
NorFlashFvbInitialize (
  IN NOR_FLASH_INSTANCE*                            Instance
  );


//
// NorFlash.c
//
EFI_STATUS
NorFlashWriteSingleBlock (
  IN        NOR_FLASH_INSTANCE   *Instance,
  IN        EFI_LBA               Lba,
  IN        UINTN                 Offset,
  IN OUT    UINTN                *NumBytes,
  IN        UINT8                *Buffer
  );

EFI_STATUS
NorFlashWriteBlocks (
  IN  NOR_FLASH_INSTANCE *Instance,
  IN  EFI_LBA           Lba,
  IN  UINTN             BufferSizeInBytes,
  IN  VOID              *Buffer
  );

EFI_STATUS
NorFlashReadBlocks (
  IN NOR_FLASH_INSTANCE   *Instance,
  IN EFI_LBA              Lba,
  IN UINTN                BufferSizeInBytes,
  OUT VOID                *Buffer
  );

EFI_STATUS
NorFlashRead (
  IN NOR_FLASH_INSTANCE   *Instance,
  IN EFI_LBA              Lba,
  IN UINTN                Offset,
  IN UINTN                BufferSizeInBytes,
  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
  );

EFI_STATUS
NorFlashEraseSingleBlock (
  IN NOR_FLASH_INSTANCE     *Instance,
  IN UINTN                  BlockAddress
  );

EFI_STATUS
NorFlashUnlockSingleBlockIfNecessary (
  IN NOR_FLASH_INSTANCE     *Instance,
  IN UINTN                  BlockAddress
  );

EFI_STATUS
NorFlashWriteSingleWord (
  IN NOR_FLASH_INSTANCE     *Instance,
  IN UINTN                  WordAddress,
  IN UINT32                 WriteData
  );

VOID
EFIAPI
NorFlashVirtualNotifyEvent (
  IN EFI_EVENT        Event,
  IN VOID             *Context
  );

#endif /* __NOR_FLASH_H__ */
