2 * Copyright 2009(C) Marvell International Ltd. and its affiliates
3 * Prafulla Wadaskar <prafulla@marvell.com>
5 * Based on drivers/mtd/spi/stmicro.c
7 * Copyright 2008, Network Appliance Inc.
8 * Jason McMullan <mcmullan@netapp.com>
10 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
11 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
13 * See file CREDITS for list of people who contributed to this
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License as
18 * published by the Free Software Foundation; either version 2 of
19 * the License, or (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
34 #include <spi_flash.h>
36 #include "spi_flash_internal.h"
38 /* MX25xx-specific commands */
39 #define CMD_MX25XX_SE 0x20 /* Sector Erase */
40 #define CMD_MX25XX_BE 0xD8 /* Block Erase */
41 #define CMD_MX25XX_CE 0xc7 /* Chip Erase */
43 struct macronix_spi_flash_params {
49 static const struct macronix_spi_flash_params macronix_spi_flash_table[] = {
78 .name = "MX25L12805D",
83 .name = "MX25L12855E",
87 static int macronix_write_status(struct spi_flash *flash, u8 sr)
92 ret = spi_flash_cmd_write_enable(flash);
94 debug("SF: enabling write failed\n");
98 cmd = CMD_WRITE_STATUS;
99 ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &sr, 1);
101 debug("SF: fail to write status register\n");
105 ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
107 debug("SF: write status register timed out\n");
114 static int macronix_unlock(struct spi_flash *flash)
118 /* Enable status register writing and clear BP# bits */
119 ret = macronix_write_status(flash, 0);
121 debug("SF: fail to disable write protection\n");
126 static int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
128 return spi_flash_cmd_erase(flash, CMD_MX25XX_BE, offset, len);
131 struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
133 const struct macronix_spi_flash_params *params;
134 struct spi_flash *flash;
136 u16 id = idcode[2] | idcode[1] << 8;
138 for (i = 0; i < ARRAY_SIZE(macronix_spi_flash_table); i++) {
139 params = ¯onix_spi_flash_table[i];
140 if (params->idcode == id)
144 if (i == ARRAY_SIZE(macronix_spi_flash_table)) {
145 debug("SF: Unsupported Macronix ID %04x\n", id);
149 flash = malloc(sizeof(*flash));
151 debug("SF: Failed to allocate memory\n");
156 flash->name = params->name;
158 flash->write = spi_flash_cmd_write_multi;
159 flash->erase = macronix_erase;
160 flash->read = spi_flash_cmd_read_fast;
161 flash->page_size = 256;
162 flash->sector_size = 256 * 16 * 16;
163 flash->size = flash->sector_size * params->nr_blocks;
165 /* Clear BP# bits for read-only flash */
166 macronix_unlock(flash);