2 * (C) Copyright 2000-2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * Copyright 2008, Network Appliance Inc.
6 * Jason McMullan <mcmullan@netapp.com>
8 * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
9 * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
11 * See file CREDITS for list of people who contributed to this
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 #include <spi_flash.h>
34 #include "spi_flash_internal.h"
36 /* M25Pxx-specific commands */
37 #define CMD_M25PXX_RES 0xab /* Release from DP, and Read Signature */
39 struct stmicro_spi_flash_params {
46 static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
49 .pages_per_sector = 128,
55 .pages_per_sector = 256,
61 .pages_per_sector = 256,
67 .pages_per_sector = 256,
73 .pages_per_sector = 256,
79 .pages_per_sector = 256,
85 .pages_per_sector = 256,
91 .pages_per_sector = 1024,
97 .pages_per_sector = 256,
103 .pages_per_sector = 256,
109 .pages_per_sector = 256,
115 .pages_per_sector = 256,
121 .pages_per_sector = 256,
127 .pages_per_sector = 256,
133 .pages_per_sector = 256,
139 .pages_per_sector = 256,
145 .pages_per_sector = 256,
151 .pages_per_sector = 256,
157 .pages_per_sector = 256,
163 .pages_per_sector = 256,
169 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
171 const struct stmicro_spi_flash_params *params;
172 struct spi_flash *flash;
176 if (idcode[0] == 0xff) {
177 i = spi_flash_cmd(spi, CMD_M25PXX_RES,
181 if ((idcode[3] & 0xf0) == 0x10) {
184 idcode[2] = idcode[3] + 1;
189 id = ((idcode[1] << 8) | idcode[2]);
191 for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) {
192 params = &stmicro_spi_flash_table[i];
193 if (params->id == id) {
198 if (i == ARRAY_SIZE(stmicro_spi_flash_table)) {
199 debug("SF: Unsupported STMicro ID %04x\n", id);
203 flash = spi_flash_alloc_base(spi, params->name);
205 debug("SF: Failed to allocate memory\n");
209 flash->page_size = 256;
210 flash->sector_size = 256 * params->pages_per_sector;
211 flash->size = flash->sector_size * params->nr_sectors;
213 /* for >= 512MiB flashes, use flag status instead of read_status */
214 if (flash->size >= 0x4000000)
215 flash->poll_cmd = CMD_FLAG_STATUS;