Messages in this thread Patch in this message | | | From | Lee Jones <> | Subject | [PATCH 08/23] mtd: devices: Provide header for shared OPCODEs and SFDP commands | Date | Fri, 22 Nov 2013 16:22:45 +0000 |
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JEDEC have helped to standardise a great deal of the commands which can be issued to a Serial Flash devices. Many of the OPCODEs and all of the Serial Flash Discoverable Parameters (SFDP) commands are generic across devices. This patch provides a shared point where these commands can be defined.
Suggested-by: Mark Brown <broonie@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org> --- drivers/mtd/devices/serial_flash_cmds.h | 91 +++++++++++++++++++++++++++++++++ drivers/mtd/devices/st_spi_fsm.c | 1 + drivers/mtd/devices/st_spi_fsm.h | 2 + 3 files changed, 94 insertions(+) create mode 100644 drivers/mtd/devices/serial_flash_cmds.h
diff --git a/drivers/mtd/devices/serial_flash_cmds.h b/drivers/mtd/devices/serial_flash_cmds.h new file mode 100644 index 0000000..e3507b2 --- /dev/null +++ b/drivers/mtd/devices/serial_flash_cmds.h @@ -0,0 +1,91 @@ +/* + * Generic/SFDP Flash Commands and Device Capabilities + * + * Copyright (C) 2013 Lee Jones <lee.jones@lianro.org> + * + * 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef _MTD_SERIAL_FLASH_CMDS_H +#define _MTD_SERIAL_FLASH_CMDS_H + +/* Generic Flash Commands/OPCODEs */ +#define FLASH_CMD_WREN 0x06 +#define FLASH_CMD_WRDI 0x04 +#define FLASH_CMD_RDID 0x9f +#define FLASH_CMD_RDSR 0x05 +#define FLASH_CMD_RDSR2 0x35 +#define FLASH_CMD_WRSR 0x01 +#define FLASH_CMD_SE_4K 0x20 +#define FLASH_CMD_SE_32K 0x52 +#define FLASH_CMD_SE 0xd8 +#define FLASH_CMD_CHIPERASE 0xc7 +#define FLASH_CMD_WRVCR 0x81 +#define FLASH_CMD_RDVCR 0x85 + +/* JEDEC Standard - Serial Flash Discoverable Parmeters (SFDP) Commands */ +#define FLASH_CMD_READ 0x03 /* READ */ +#define FLASH_CMD_READ_FAST 0x0b /* FAST READ */ +#define FLASH_CMD_READ_1_1_2 0x3b /* DUAL OUTPUT READ */ +#define FLASH_CMD_READ_1_2_2 0xbb /* DUAL I/O READ */ +#define FLASH_CMD_READ_1_1_4 0x6b /* QUAD OUTPUT READ */ +#define FLASH_CMD_READ_1_4_4 0xeb /* QUAD I/O READ */ + +#define FLASH_CMD_WRITE 0x02 /* PAGE PROGRAM */ +#define FLASH_CMD_WRITE_1_1_2 0xa2 /* DUAL INPUT PROGRAM */ +#define FLASH_CMD_WRITE_1_2_2 0xd2 /* DUAL INPUT EXT PROGRAM */ +#define FLASH_CMD_WRITE_1_1_4 0x32 /* QUAD INPUT PROGRAM */ +#define FLASH_CMD_WRITE_1_4_4 0x12 /* QUAD INPUT EXT PROGRAM */ + +#define FLASH_CMD_EN4B_ADDR 0xb7 /* Enter 4-byte address mode */ +#define FLASH_CMD_EX4B_ADDR 0xe9 /* Exit 4-byte address mode */ + +/* READ commands with 32-bit addressing */ +#define FLASH_CMD_READ4 0x13 +#define FLASH_CMD_READ4_FAST 0x0c +#define FLASH_CMD_READ4_1_1_2 0x3c +#define FLASH_CMD_READ4_1_2_2 0xbc +#define FLASH_CMD_READ4_1_1_4 0x6c +#define FLASH_CMD_READ4_1_4_4 0xec + +/* Configuration flags */ +#define FLASH_FLAG_SINGLE 0x000000ff +#define FLASH_FLAG_READ_WRITE 0x00000001 +#define FLASH_FLAG_READ_FAST 0x00000002 +#define FLASH_FLAG_SE_4K 0x00000004 +#define FLASH_FLAG_SE_32K 0x00000008 +#define FLASH_FLAG_CE 0x00000010 +#define FLASH_FLAG_32BITADDR 0x00000020 +#define FLASH_FLAG_RESET 0x00000040 +#define FLASH_FLAG_DYB_LOCKING 0x00000080 + +#define FLASH_FLAG_DUAL 0x0000ff00 +#define FLASH_FLAG_READ_1_1_2 0x00000100 +#define FLASH_FLAG_READ_1_2_2 0x00000200 +#define FLASH_FLAG_READ_2_2_2 0x00000400 +#define FLASH_FLAG_WRITE_1_1_2 0x00001000 +#define FLASH_FLAG_WRITE_1_2_2 0x00002000 +#define FLASH_FLAG_WRITE_2_2_2 0x00004000 + +#define FLASH_FLAG_QUAD 0x00ff0000 +#define FLASH_FLAG_READ_1_1_4 0x00010000 +#define FLASH_FLAG_READ_1_4_4 0x00020000 +#define FLASH_FLAG_READ_4_4_4 0x00040000 +#define FLASH_FLAG_WRITE_1_1_4 0x00100000 +#define FLASH_FLAG_WRITE_1_4_4 0x00200000 +#define FLASH_FLAG_WRITE_4_4_4 0x00400000 + +#endif /* _MTD_SERIAL_FLASH_CMDS_H */ diff --git a/drivers/mtd/devices/st_spi_fsm.c b/drivers/mtd/devices/st_spi_fsm.c index f937329..ddab76f 100644 --- a/drivers/mtd/devices/st_spi_fsm.c +++ b/drivers/mtd/devices/st_spi_fsm.c @@ -24,6 +24,7 @@ #include <asm/io.h> #include "st_spi_fsm.h" +#include "serial_flash_cmds.h" static struct stfsm_seq stfsm_seq_read_jedec = { .data_size = TRANSFER_SIZE(8), diff --git a/drivers/mtd/devices/st_spi_fsm.h b/drivers/mtd/devices/st_spi_fsm.h index 97b4868..5c6c55e 100644 --- a/drivers/mtd/devices/st_spi_fsm.h +++ b/drivers/mtd/devices/st_spi_fsm.h @@ -16,6 +16,8 @@ #ifndef ST_SPI_FSM_H #define ST_SPI_FSM_H +#include "serial_flash_cmds.h" + /* * FSM SPI Controller Registers */ -- 1.8.1.2
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