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 #define SPSN_ID_S25FL008A       0x0213
  39 #define SPSN_ID_S25FL016A       0x0214
  40 #define SPSN_ID_S25FL032A       0x0215
  41 #define SPSN_ID_S25FL064A       0x0216
  42 #define SPSN_ID_S25FL128P       0x2018
  43 #define SPSN_EXT_ID_S25FL128P_256KB     0x0300
  44 #define SPSN_EXT_ID_S25FL128P_64KB      0x0301
  45 #define SPSN_EXT_ID_S25FL032P           0x4d00
  46 #define SPSN_EXT_ID_S25FL129P           0x4d01
  47
  48 struct spansion_spi_flash_params {
  49         u16 idcode1;
  50         u16 idcode2;
  51         u16 page_size;
  52         u16 pages_per_sector;
  53         u16 nr_sectors;
  54         const char *name;
  55 };
  56
  57 static const struct spansion_spi_flash_params spansion_spi_flash_table[] = {
  58         {
  59                 .idcode1 = SPSN_ID_S25FL008A,
  60                 .idcode2 = 0,
  61                 .page_size = 256,
  62                 .pages_per_sector = 256,
  63                 .nr_sectors = 16,
  64                 .name = "S25FL008A",
  65         },
  66         {
  67                 .idcode1 = SPSN_ID_S25FL016A,
  68                 .idcode2 = 0,
  69                 .page_size = 256,
  70                 .pages_per_sector = 256,
  71                 .nr_sectors = 32,
  72                 .name = "S25FL016A",
  73         },
  74         {
  75                 .idcode1 = SPSN_ID_S25FL032A,
  76                 .idcode2 = 0,
  77                 .page_size = 256,
  78                 .pages_per_sector = 256,
  79                 .nr_sectors = 64,
  80                 .name = "S25FL032A",
  81         },
  82         {
  83                 .idcode1 = SPSN_ID_S25FL064A,
  84                 .idcode2 = 0,
  85                 .page_size = 256,
  86                 .pages_per_sector = 256,
  87                 .nr_sectors = 128,
  88                 .name = "S25FL064A",
  89         },
  90         {
  91                 .idcode1 = SPSN_ID_S25FL128P,
  92                 .idcode2 = SPSN_EXT_ID_S25FL128P_64KB,
  93                 .page_size = 256,
  94                 .pages_per_sector = 256,
  95                 .nr_sectors = 256,
  96                 .name = "S25FL128P_64K",
  97         },
  98         {
  99                 .idcode1 = SPSN_ID_S25FL128P,
 100                 .idcode2 = SPSN_EXT_ID_S25FL128P_256KB,
 101                 .page_size = 256,
 102                 .pages_per_sector = 1024,
 103                 .nr_sectors = 64,
 104                 .name = "S25FL128P_256K",
 105         },
 106         {
 107                 .idcode1 = SPSN_ID_S25FL032A,
 108                 .idcode2 = SPSN_EXT_ID_S25FL032P,
 109                 .page_size = 256,
 110                 .pages_per_sector = 256,
 111                 .nr_sectors = 64,
 112                 .name = "S25FL032P",
 113         },
 114         {
 115                 .idcode1 = SPSN_ID_S25FL128P,
 116                 .idcode2 = SPSN_EXT_ID_S25FL129P,
 117                 .page_size = 256,
 118                 .pages_per_sector = 256,
 119                 .nr_sectors = 256,
 120                 .name = "S25FL129P_64K",
 121         },
 122 };
 123
 124 static int spansion_erase(struct spi_flash *flash, u32 offset, size_t len)
 125 {
 126         return spi_flash_cmd_erase(flash, CMD_S25FLXX_SE, offset, len);
 127 }
 128
 129 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)
 130 {
 131         const struct spansion_spi_flash_params *params;
 132         struct spi_flash *flash;
 133         unsigned int i;
 134         unsigned short jedec, ext_jedec;
 135
 136         jedec = idcode[1] << 8 | idcode[2];
 137         ext_jedec = idcode[3] << 8 | idcode[4];
 138
 139         for (i = 0; i < ARRAY_SIZE(spansion_spi_flash_table); i++) {
 140                 params = &spansion_spi_flash_table[i];
 141                 if (params->idcode1 == jedec) {
 142                         if (params->idcode2 == ext_jedec)
 143                                 break;
 144                 }
 145         }
 146
 147         if (i == ARRAY_SIZE(spansion_spi_flash_table)) {
 148                 debug("SF: Unsupported SPANSION ID %04x %04x\n", jedec, ext_jedec);
 149                 return NULL;
 150         }
 151
 152         flash = malloc(sizeof(*flash));
 153         if (!flash) {
 154                 debug("SF: Failed to allocate memory\n");
 155                 return NULL;
 156         }
 157
 158         flash->spi = spi;
 159         flash->name = params->name;
 160
 161         flash->write = spi_flash_cmd_write_multi;
 162         flash->erase = spansion_erase;
 163         flash->read = spi_flash_cmd_read_fast;
 164         flash->page_size = params->page_size;
 165         flash->sector_size = params->page_size * params->pages_per_sector;
 166         flash->size = flash->sector_size * params->nr_sectors;
 167
 168         return flash;
 169 }