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_WREN 0x06 /* Write Enable */
40 #define CMD_MX25XX_WRDI 0x04 /* Write Disable */
41 #define CMD_MX25XX_RDSR 0x05 /* Read Status Register */
42 #define CMD_MX25XX_WRSR 0x01 /* Write Status Register */
43 #define CMD_MX25XX_READ 0x03 /* Read Data Bytes */
44 #define CMD_MX25XX_FAST_READ 0x0b /* Read Data Bytes at Higher Speed */
45 #define CMD_MX25XX_PP 0x02 /* Page Program */
46 #define CMD_MX25XX_SE 0x20 /* Sector Erase */
47 #define CMD_MX25XX_BE 0xD8 /* Block Erase */
48 #define CMD_MX25XX_CE 0xc7 /* Chip Erase */
49 #define CMD_MX25XX_DP 0xb9 /* Deep Power-down */
50 #define CMD_MX25XX_RES 0xab /* Release from DP, and Read Signature */
52 struct macronix_spi_flash_params {
56 u16 sectors_per_block;
61 static const struct macronix_spi_flash_params macronix_spi_flash_table[] = {
65 .pages_per_sector = 16,
66 .sectors_per_block = 16,
73 .pages_per_sector = 16,
74 .sectors_per_block = 16,
81 .pages_per_sector = 16,
82 .sectors_per_block = 16,
89 .pages_per_sector = 16,
90 .sectors_per_block = 16,
97 .pages_per_sector = 16,
98 .sectors_per_block = 16,
100 .name = "MX25L6405D",
105 .pages_per_sector = 16,
106 .sectors_per_block = 16,
108 .name = "MX25L12805D",
113 .pages_per_sector = 16,
114 .sectors_per_block = 16,
116 .name = "MX25L12855E",
120 static int macronix_write_status(struct spi_flash *flash, u8 sr)
125 ret = spi_flash_cmd_write_enable(flash);
127 debug("SF: enabling write failed\n");
131 cmd = CMD_MX25XX_WRSR;
132 ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &sr, 1);
134 debug("SF: fail to write status register\n");
138 ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT);
140 debug("SF: write status register timed out\n");
147 static int macronix_unlock(struct spi_flash *flash)
151 /* Enable status register writing and clear BP# bits */
152 ret = macronix_write_status(flash, 0);
154 debug("SF: fail to disable write protection\n");
159 static int macronix_erase(struct spi_flash *flash, u32 offset, size_t len)
161 return spi_flash_cmd_erase(flash, CMD_MX25XX_BE, offset, len);
164 struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode)
166 const struct macronix_spi_flash_params *params;
167 struct spi_flash *flash;
169 u16 id = idcode[2] | idcode[1] << 8;
171 for (i = 0; i < ARRAY_SIZE(macronix_spi_flash_table); i++) {
172 params = ¯onix_spi_flash_table[i];
173 if (params->idcode == id)
177 if (i == ARRAY_SIZE(macronix_spi_flash_table)) {
178 debug("SF: Unsupported Macronix ID %04x\n", id);
182 flash = malloc(sizeof(*flash));
184 debug("SF: Failed to allocate memory\n");
189 flash->name = params->name;
191 flash->write = spi_flash_cmd_write_multi;
192 flash->erase = macronix_erase;
193 flash->read = spi_flash_cmd_read_fast;
194 flash->page_size = params->page_size;
195 flash->sector_size = params->page_size * params->pages_per_sector
196 * params->sectors_per_block;
197 flash->size = flash->sector_size * params->nr_blocks;
199 /* Clear BP# bits for read-only flash */
200 macronix_unlock(flash);