drivers/mtd/spi/stmicro.c

   1 /*
   2  * (C) Copyright 2000-2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * Copyright 2008, Network Appliance Inc.
   6  * Jason McMullan <mcmullan@netapp.com>
   7  *
   8  * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
   9  * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
  10  *
  11  * See file CREDITS for list of people who contributed to this
  12  * project.
  13  *
  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.
  18  *
  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.
  23  *
  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,
  27  * MA 02111-1307 USA
  28  */
  29
  30 #include <common.h>
  31 #include <malloc.h>
  32 #include <spi_flash.h>
  33
  34 #include "spi_flash_internal.h"
  35
  36 /* M25Pxx-specific commands */
  37 #define CMD_M25PXX_RES          0xab    /* Release from DP, and Read Signature */
  38
  39 struct stmicro_spi_flash_params {
  40         u16 id;
  41         u16 pages_per_sector;
  42         u16 nr_sectors;
  43         const char *name;
  44 };
  45
  46 static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
  47         {
  48                 .id = 0x2011,
  49                 .pages_per_sector = 128,
  50                 .nr_sectors = 4,
  51                 .name = "M25P10",
  52         },
  53         {
  54                 .id = 0x2015,
  55                 .pages_per_sector = 256,
  56                 .nr_sectors = 32,
  57                 .name = "M25P16",
  58         },
  59         {
  60                 .id = 0x2012,
  61                 .pages_per_sector = 256,
  62                 .nr_sectors = 4,
  63                 .name = "M25P20",
  64         },
  65         {
  66                 .id = 0x2016,
  67                 .pages_per_sector = 256,
  68                 .nr_sectors = 64,
  69                 .name = "M25P32",
  70         },
  71         {
  72                 .id = 0x2013,
  73                 .pages_per_sector = 256,
  74                 .nr_sectors = 8,
  75                 .name = "M25P40",
  76         },
  77         {
  78                 .id = 0x2017,
  79                 .pages_per_sector = 256,
  80                 .nr_sectors = 128,
  81                 .name = "M25P64",
  82         },
  83         {
  84                 .id = 0x2014,
  85                 .pages_per_sector = 256,
  86                 .nr_sectors = 16,
  87                 .name = "M25P80",
  88         },
  89         {
  90                 .id = 0x2018,
  91                 .pages_per_sector = 1024,
  92                 .nr_sectors = 64,
  93                 .name = "M25P128",
  94         },
  95         {
  96                 .id = 0xba16,
  97                 .pages_per_sector = 256,
  98                 .nr_sectors = 64,
  99                 .name = "N25Q32",
 100         },
 101         {
 102                 .id = 0xbb16,
 103                 .pages_per_sector = 256,
 104                 .nr_sectors = 64,
 105                 .name = "N25Q32A",
 106         },
 107         {
 108                 .id = 0xba17,
 109                 .pages_per_sector = 256,
 110                 .nr_sectors = 128,
 111                 .name = "N25Q064",
 112         },
 113         {
 114                 .id = 0xbb17,
 115                 .pages_per_sector = 256,
 116                 .nr_sectors = 128,
 117                 .name = "N25Q64A",
 118         },
 119         {
 120                 .id = 0xba18,
 121                 .pages_per_sector = 256,
 122                 .nr_sectors = 256,
 123                 .name = "N25Q128",
 124         },
 125         {
 126                 .id = 0xbb18,
 127                 .pages_per_sector = 256,
 128                 .nr_sectors = 256,
 129                 .name = "N25Q128A",
 130         },
 131         {
 132                 .id = 0xba19,
 133                 .pages_per_sector = 256,
 134                 .nr_sectors = 512,
 135                 .name = "N25Q256",
 136         },
 137         {
 138                 .id = 0xbb19,
 139                 .pages_per_sector = 256,
 140                 .nr_sectors = 512,
 141                 .name = "N25Q256A",
 142         },
 143         {
 144                 .id = 0xba20,
 145                 .pages_per_sector = 256,
 146                 .nr_sectors = 1024,
 147                 .name = "N25Q512",
 148         },
 149         {
 150                 .id = 0xbb20,
 151                 .pages_per_sector = 256,
 152                 .nr_sectors = 1024,
 153                 .name = "N25Q512A",
 154         },
 155         {
 156                 .id = 0xba21,
 157                 .pages_per_sector = 256,
 158                 .nr_sectors = 2048,
 159                 .name = "N25Q1024",
 160         },
 161         {
 162                 .id = 0xbb21,
 163                 .pages_per_sector = 256,
 164                 .nr_sectors = 2048,
 165                 .name = "N25Q1024A",
 166         },
 167 };
 168
 169 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode)
 170 {
 171         const struct stmicro_spi_flash_params *params;
 172         struct spi_flash *flash;
 173         unsigned int i;
 174         u16 id;
 175
 176         if (idcode[0] == 0xff) {
 177                 i = spi_flash_cmd(spi, CMD_M25PXX_RES,
 178                                   idcode, 4);
 179                 if (i)
 180                         return NULL;
 181                 if ((idcode[3] & 0xf0) == 0x10) {
 182                         idcode[0] = 0x20;
 183                         idcode[1] = 0x20;
 184                         idcode[2] = idcode[3] + 1;
 185                 } else
 186                         return NULL;
 187         }
 188
 189         id = ((idcode[1] << 8) | idcode[2]);
 190
 191         for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) {
 192                 params = &stmicro_spi_flash_table[i];
 193                 if (params->id == id) {
 194                         break;
 195                 }
 196         }
 197
 198         if (i == ARRAY_SIZE(stmicro_spi_flash_table)) {
 199                 debug("SF: Unsupported STMicro ID %04x\n", id);
 200                 return NULL;
 201         }
 202
 203         flash = spi_flash_alloc_base(spi, params->name);
 204         if (!flash) {
 205                 debug("SF: Failed to allocate memory\n");
 206                 return NULL;
 207         }
 208
 209         flash->page_size = 256;
 210         flash->sector_size = 256 * params->pages_per_sector;
 211         flash->size = flash->sector_size * params->nr_sectors;
 212
 213         /* for >= 512MiB flashes, use flag status instead of read_status */
 214         if (flash->size >= 0x4000000)
 215                 flash->poll_cmd = CMD_FLAG_STATUS;
 216
 217         return flash;
 218 }