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spi.h
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spi.h
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/*
* This file is part of the flashrom project.
*
* Copyright (C) 2007, 2008 Carl-Daniel Hailfinger
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __SPI_H__
#define __SPI_H__ 1
/*
* Contains the generic SPI headers
*/
#define JEDEC_MAX_ADDR_LEN 0x04
/* Read Electronic ID */
#define JEDEC_RDID 0x9f
#define JEDEC_RDID_OUTSIZE 0x01
/* INSIZE may be 0x04 for some chips*/
#define JEDEC_RDID_INSIZE 0x03
/* Some Atmel AT25F* models have bit 3 as don't care bit in commands */
#define AT25F_RDID 0x15 /* 0x15 or 0x1d */
#define AT25F_RDID_OUTSIZE 0x01
#define AT25F_RDID_INSIZE 0x02
/* Read Electronic Manufacturer Signature */
#define JEDEC_REMS 0x90
#define JEDEC_REMS_OUTSIZE 0x04
#define JEDEC_REMS_INSIZE 0x02
/* Read Serial Flash Discoverable Parameters (SFDP) */
#define JEDEC_SFDP 0x5a
#define JEDEC_SFDP_OUTSIZE 0x05 /* 8b op, 24b addr, 8b dummy */
/* JEDEC_SFDP_INSIZE : any length */
/* Read Electronic Signature */
#define JEDEC_RES 0xab
#define JEDEC_RES_OUTSIZE 0x04
/* INSIZE may be 0x02 for some chips*/
#define JEDEC_RES_INSIZE 0x01
/* Write Enable */
#define JEDEC_WREN 0x06
#define JEDEC_WREN_OUTSIZE 0x01
#define JEDEC_WREN_INSIZE 0x00
/* Write Disable */
#define JEDEC_WRDI 0x04
#define JEDEC_WRDI_OUTSIZE 0x01
#define JEDEC_WRDI_INSIZE 0x00
/* Chip Erase 0x60 is supported by Macronix/SST chips. */
#define JEDEC_CE_60 0x60
#define JEDEC_CE_60_OUTSIZE 0x01
#define JEDEC_CE_60_INSIZE 0x00
/* Chip Erase 0x62 is supported by Atmel AT25F chips. */
#define JEDEC_CE_62 0x62
#define JEDEC_CE_62_OUTSIZE 0x01
#define JEDEC_CE_62_INSIZE 0x00
/* Chip Erase 0xc7 is supported by SST/ST/EON/Macronix chips. */
#define JEDEC_CE_C7 0xc7
#define JEDEC_CE_C7_OUTSIZE 0x01
#define JEDEC_CE_C7_INSIZE 0x00
/* Block Erase 0x50 is supported by Atmel AT26DF chips. */
#define JEDEC_BE_50 0x50
#define JEDEC_BE_50_OUTSIZE 0x04
#define JEDEC_BE_50_INSIZE 0x00
/* Block Erase 0x52 is supported by SST and old Atmel chips. */
#define JEDEC_BE_52 0x52
#define JEDEC_BE_52_OUTSIZE 0x04
#define JEDEC_BE_52_INSIZE 0x00
/* Block Erase 0x81 is supported by Atmel AT26DF chips. */
#define JEDEC_BE_81 0x81
#define JEDEC_BE_81_OUTSIZE 0x04
#define JEDEC_BE_81_INSIZE 0x00
/* Block Erase 0xc4 is supported by Micron chips. */
#define JEDEC_BE_C4 0xc4
#define JEDEC_BE_C4_OUTSIZE 0x04
#define JEDEC_BE_C4_INSIZE 0x00
/* Block Erase 0xd8 is supported by EON/Macronix chips. */
#define JEDEC_BE_D8 0xd8
#define JEDEC_BE_D8_OUTSIZE 0x04
#define JEDEC_BE_D8_INSIZE 0x00
/* Block Erase 0xd7 is supported by PMC chips. */
#define JEDEC_BE_D7 0xd7
#define JEDEC_BE_D7_OUTSIZE 0x04
#define JEDEC_BE_D7_INSIZE 0x00
/* Sector Erase 0x20 is supported by Macronix/SST chips. */
#define JEDEC_SE 0x20
#define JEDEC_SE_OUTSIZE 0x04
#define JEDEC_SE_INSIZE 0x00
/* Page Erase 0xDB */
#define JEDEC_PE 0xDB
#define JEDEC_PE_OUTSIZE 0x04
#define JEDEC_PE_INSIZE 0x00
/* Read Status Register */
#define JEDEC_RDSR 0x05
#define JEDEC_RDSR_OUTSIZE 0x01
#define JEDEC_RDSR_INSIZE 0x01
/* Status Register Bits */
#define SPI_SR_WIP (0x01 << 0)
#define SPI_SR_WEL (0x01 << 1)
#define SPI_SR_AAI (0x01 << 6)
/* Write Status Enable */
#define JEDEC_EWSR 0x50
#define JEDEC_EWSR_OUTSIZE 0x01
#define JEDEC_EWSR_INSIZE 0x00
/* Write Status Register */
#define JEDEC_WRSR 0x01
#define JEDEC_WRSR_OUTSIZE 0x02
#define JEDEC_WRSR_INSIZE 0x00
/* Enter 4-byte Address Mode */
#define JEDEC_ENTER_4_BYTE_ADDR_MODE 0xB7
/* Exit 4-byte Address Mode */
#define JEDEC_EXIT_4_BYTE_ADDR_MODE 0xE9
/* Write Extended Address Register */
#define JEDEC_WRITE_EXT_ADDR_REG 0xC5
/* Read Extended Address Register */
#define JEDEC_READ_EXT_ADDR_REG 0xC8
/* Read the memory */
#define JEDEC_READ 0x03
#define JEDEC_READ_OUTSIZE 0x04
/* JEDEC_READ_INSIZE : any length */
/* Write memory byte */
#define JEDEC_BYTE_PROGRAM 0x02
#define JEDEC_BYTE_PROGRAM_OUTSIZE 0x05
#define JEDEC_BYTE_PROGRAM_INSIZE 0x00
/* Write AAI word (SST25VF080B) */
#define JEDEC_AAI_WORD_PROGRAM 0xad
#define JEDEC_AAI_WORD_PROGRAM_OUTSIZE 0x06
#define JEDEC_AAI_WORD_PROGRAM_CONT_OUTSIZE 0x03
#define JEDEC_AAI_WORD_PROGRAM_INSIZE 0x00
/* Read the memory with 4-byte address
From ANY mode (3-bytes or 4-bytes) it works with 4-byte address */
#define JEDEC_READ_4BA 0x13
/* Write memory byte with 4-byte address
From ANY mode (3-bytes or 4-bytes) it works with 4-byte address */
#define JEDEC_BYTE_PROGRAM_4BA 0x12
/* Error codes */
#define SPI_GENERIC_ERROR -1
#define SPI_INVALID_OPCODE -2
#define SPI_INVALID_ADDRESS -3
#define SPI_INVALID_LENGTH -4
#define SPI_FLASHROM_BUG -5
#define SPI_PROGRAMMER_ERROR -6
#endif /* !__SPI_H__ */