drivers/mtd/spi/spansion.c

   1 /*
   2  * Copyright (C) 2009 Freescale Semiconductor, Inc.
   3  *
   4  * Author: Mingkai Hu (Mingkai.hu@freescale.com)
   5  * Based on stmicro.c by Wolfgang Denk (wd@denx.de),
   6  * TsiChung Liew (Tsi-Chung.Liew@freescale.com),
   7  * and  Jason McMullan (mcmullan@netapp.com)
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 #include <common.h>
  29 #include <malloc.h>
  30 #include <spi_flash.h>
  31
  32 #include "spi_flash_internal.h"
  33
  34 /* S25FLxx-specific commands */
  35 #define CMD_S25FLXX_SE          0xd8    /* Sector Erase */
  36 #define CMD_S25FLXX_BE          0xc7    /* Bulk Erase */
  37
  38 struct spansion_spi_flash_params {
  39         u16 idcode1;
  40         u16 idcode2;
  41         u16 pages_per_sector;
  42         u16 nr_sectors;
  43         const char *name;
  44 };
  45
  46 static const struct spansion_spi_flash_params spansion_spi_flash_table[] = {
  47         {
  48                 .idcode1 = 0x0213,
  49                 .idcode2 = 0,
  50                 .pages_per_sector = 256,
  51                 .nr_sectors = 16,
  52                 .name = "S25FL008A",
  53         },
  54         {
  55                 .idcode1 = 0x0214,
  56                 .idcode2 = 0,
  57                 .pages_per_sector = 256,
  58                 .nr_sectors = 32,
  59                 .name = "S25FL016A",
  60         },
  61         {
  62                 .idcode1 = 0x0215,
  63                 .idcode2 = 0,
  64                 .pages_per_sector = 256,
  65                 .nr_sectors = 64,
  66                 .name = "S25FL032A",
  67         },
  68         {
  69                 .idcode1 = 0x0216,
  70                 .idcode2 = 0,
  71                 .pages_per_sector = 256,
  72                 .nr_sectors = 128,
  73                 .name = "S25FL064A",
  74         },
  75         {
  76                 .idcode1 = 0x2018,
  77                 .idcode2 = 0x0301,
  78                 .pages_per_sector = 256,
  79                 .nr_sectors = 256,
  80                 .name = "S25FL128P_64K",
  81         },
  82         {
  83                 .idcode1 = 0x2018,
  84                 .idcode2 = 0x0300,
  85                 .pages_per_sector = 1024,
  86                 .nr_sectors = 64,
  87                 .name = "S25FL128P_256K",
  88         },
  89         {
  90                 .idcode1 = 0x0215,
  91                 .idcode2 = 0x4d00,
  92                 .pages_per_sector = 256,
  93                 .nr_sectors = 64,
  94                 .name = "S25FL032P",
  95         },
  96         {
  97                 .idcode1 = 0x2018,
  98                 .idcode2 = 0x4d01,
  99                 .pages_per_sector = 256,
 100                 .nr_sectors = 256,
 101                 .name = "S25FL129P_64K",
 102         },
 103 };
 104
 105 static int spansion_erase(struct spi_flash *flash, u32 offset, size_t len)
 106 {
 107         return spi_flash_cmd_erase(flash, CMD_S25FLXX_SE, offset, len);
 108 }
 109
 110 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
 111 {
 112         const struct spansion_spi_flash_params *params;
 113         struct spi_flash *flash;
 114         unsigned int i;
 115         unsigned short jedec, ext_jedec;
 116
 117         jedec = idcode[1] << 8 | idcode[2];
 118         ext_jedec = idcode[3] << 8 | idcode[4];
 119
 120         for (i = 0; i < ARRAY_SIZE(spansion_spi_flash_table); i++) {
 121                 params = &spansion_spi_flash_table[i];
 122                 if (params->idcode1 == jedec) {
 123                         if (params->idcode2 == ext_jedec)
 124                                 break;
 125                 }
 126         }
 127
 128         if (i == ARRAY_SIZE(spansion_spi_flash_table)) {
 129                 debug("SF: Unsupported SPANSION ID %04x %04x\n", jedec, ext_jedec);
 130                 return NULL;
 131         }
 132
 133         flash = malloc(sizeof(*flash));
 134         if (!flash) {
 135                 debug("SF: Failed to allocate memory\n");
 136                 return NULL;
 137         }
 138
 139         flash->spi = spi;
 140         flash->name = params->name;
 141
 142         flash->write = spi_flash_cmd_write_multi;
 143         flash->erase = spansion_erase;
 144         flash->read = spi_flash_cmd_read_fast;
 145         flash->page_size = 256;
 146         flash->sector_size = 256 * params->pages_per_sector;
 147         flash->size = flash->sector_size * params->nr_sectors;
 148
 149         return flash;
 150 }