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 struct spansion_spi_flash_params {
  35         u16 idcode1;
  36         u16 idcode2;
  37         u16 pages_per_sector;
  38         u16 nr_sectors;
  39         const char *name;
  40 };
  41
  42 static const struct spansion_spi_flash_params spansion_spi_flash_table[] = {
  43         {
  44                 .idcode1 = 0x0213,
  45                 .idcode2 = 0,
  46                 .pages_per_sector = 256,
  47                 .nr_sectors = 16,
  48                 .name = "S25FL008A",
  49         },
  50         {
  51                 .idcode1 = 0x0214,
  52                 .idcode2 = 0,
  53                 .pages_per_sector = 256,
  54                 .nr_sectors = 32,
  55                 .name = "S25FL016A",
  56         },
  57         {
  58                 .idcode1 = 0x0215,
  59                 .idcode2 = 0,
  60                 .pages_per_sector = 256,
  61                 .nr_sectors = 64,
  62                 .name = "S25FL032A",
  63         },
  64         {
  65                 .idcode1 = 0x0216,
  66                 .idcode2 = 0,
  67                 .pages_per_sector = 256,
  68                 .nr_sectors = 128,
  69                 .name = "S25FL064A",
  70         },
  71         {
  72                 .idcode1 = 0x2018,
  73                 .idcode2 = 0x0301,
  74                 .pages_per_sector = 256,
  75                 .nr_sectors = 256,
  76                 .name = "S25FL128P_64K",
  77         },
  78         {
  79                 .idcode1 = 0x2018,
  80                 .idcode2 = 0x0300,
  81                 .pages_per_sector = 1024,
  82                 .nr_sectors = 64,
  83                 .name = "S25FL128P_256K",
  84         },
  85         {
  86                 .idcode1 = 0x0215,
  87                 .idcode2 = 0x4d00,
  88                 .pages_per_sector = 256,
  89                 .nr_sectors = 64,
  90                 .name = "S25FL032P",
  91         },
  92         {
  93                 .idcode1 = 0x2018,
  94                 .idcode2 = 0x4d01,
  95                 .pages_per_sector = 256,
  96                 .nr_sectors = 256,
  97                 .name = "S25FL129P_64K",
  98         },
  99 };
 100
 101 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
 102 {
 103         const struct spansion_spi_flash_params *params;
 104         struct spi_flash *flash;
 105         unsigned int i;
 106         unsigned short jedec, ext_jedec;
 107
 108         jedec = idcode[1] << 8 | idcode[2];
 109         ext_jedec = idcode[3] << 8 | idcode[4];
 110
 111         for (i = 0; i < ARRAY_SIZE(spansion_spi_flash_table); i++) {
 112                 params = &spansion_spi_flash_table[i];
 113                 if (params->idcode1 == jedec) {
 114                         if (params->idcode2 == ext_jedec)
 115                                 break;
 116                 }
 117         }
 118
 119         if (i == ARRAY_SIZE(spansion_spi_flash_table)) {
 120                 debug("SF: Unsupported SPANSION ID %04x %04x\n", jedec, ext_jedec);
 121                 return NULL;
 122         }
 123
 124         flash = malloc(sizeof(*flash));
 125         if (!flash) {
 126                 debug("SF: Failed to allocate memory\n");
 127                 return NULL;
 128         }
 129
 130         flash->spi = spi;
 131         flash->name = params->name;
 132
 133         flash->write = spi_flash_cmd_write_multi;
 134         flash->erase = spi_flash_cmd_erase;
 135         flash->read = spi_flash_cmd_read_fast;
 136         flash->page_size = 256;
 137         flash->sector_size = 256 * params->pages_per_sector;
 138         flash->size = flash->sector_size * params->nr_sectors;
 139
 140         return flash;
 141 }