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  * SPDX-License-Identifier:     GPL-2.0+
  12  */
  13
  14 #include <common.h>
  15 #include <malloc.h>
  16 #include <spi_flash.h>
  17
  18 #include "spi_flash_internal.h"
  19
  20 /* M25Pxx-specific commands */
  21 #define CMD_M25PXX_RES  0xab    /* Release from DP, and Read Signature */
  22
  23 struct stmicro_spi_flash_params {
  24         u16 id;
  25         u16 pages_per_sector;
  26         u16 nr_sectors;
  27         const char *name;
  28 };
  29
  30 static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = {
  31         {
  32                 .id = 0x2011,
  33                 .pages_per_sector = 128,
  34                 .nr_sectors = 4,
  35                 .name = "M25P10",
  36         },
  37         {
  38                 .id = 0x2015,
  39                 .pages_per_sector = 256,
  40                 .nr_sectors = 32,
  41                 .name = "M25P16",
  42         },
  43         {
  44                 .id = 0x2012,
  45                 .pages_per_sector = 256,
  46                 .nr_sectors = 4,
  47                 .name = "M25P20",
  48         },
  49         {
  50                 .id = 0x2016,
  51                 .pages_per_sector = 256,
  52                 .nr_sectors = 64,
  53                 .name = "M25P32",
  54         },
  55         {
  56                 .id = 0x2013,
  57                 .pages_per_sector = 256,
  58                 .nr_sectors = 8,
  59                 .name = "M25P40",
  60         },
  61         {
  62                 .id = 0x2017,
  63                 .pages_per_sector = 256,
  64                 .nr_sectors = 128,
  65                 .name = "M25P64",
  66         },
  67         {
  68                 .id = 0x2014,
  69                 .pages_per_sector = 256,
  70                 .nr_sectors = 16,
  71                 .name = "M25P80",
  72         },
  73         {
  74                 .id = 0x2018,
  75                 .pages_per_sector = 1024,
  76                 .nr_sectors = 64,
  77                 .name = "M25P128",
  78         },
  79         {
  80                 .id = 0xba16,
  81                 .pages_per_sector = 256,
  82                 .nr_sectors = 64,
  83                 .name = "N25Q32",
  84         },
  85         {
  86                 .id = 0xbb16,
  87                 .pages_per_sector = 256,
  88                 .nr_sectors = 64,
  89                 .name = "N25Q32A",
  90         },
  91         {
  92                 .id = 0xba17,
  93                 .pages_per_sector = 256,
  94                 .nr_sectors = 128,
  95                 .name = "N25Q064",
  96         },
  97         {
  98                 .id = 0xbb17,
  99                 .pages_per_sector = 256,
 100                 .nr_sectors = 128,
 101                 .name = "N25Q64A",
 102         },
 103         {
 104                 .id = 0xba18,
 105                 .pages_per_sector = 256,
 106                 .nr_sectors = 256,
 107                 .name = "N25Q128",
 108         },
 109         {
 110                 .id = 0xbb18,
 111                 .pages_per_sector = 256,
 112                 .nr_sectors = 256,
 113                 .name = "N25Q128A",
 114         },
 115         {
 116                 .id = 0xba19,
 117                 .pages_per_sector = 256,
 118                 .nr_sectors = 512,
 119                 .name = "N25Q256",
 120         },
 121         {
 122                 .id = 0xbb19,
 123                 .pages_per_sector = 256,
 124                 .nr_sectors = 512,
 125                 .name = "N25Q256A",
 126         },
 127         {
 128                 .id = 0xba20,
 129                 .pages_per_sector = 256,
 130                 .nr_sectors = 1024,
 131                 .name = "N25Q512",
 132         },
 133         {
 134                 .id = 0xbb20,
 135                 .pages_per_sector = 256,
 136                 .nr_sectors = 1024,
 137                 .name = "N25Q512A",
 138         },
 139         {
 140                 .id = 0xba21,
 141                 .pages_per_sector = 256,
 142                 .nr_sectors = 2048,
 143                 .name = "N25Q1024",
 144         },
 145         {
 146                 .id = 0xbb21,
 147                 .pages_per_sector = 256,
 148                 .nr_sectors = 2048,
 149                 .name = "N25Q1024A",
 150         },
 151 };
 152
 153 struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 *idcode)
 154 {
 155         const struct stmicro_spi_flash_params *params;
 156         struct spi_flash *flash;
 157         unsigned int i;
 158         u16 id;
 159
 160         if (idcode[0] == 0xff) {
 161                 i = spi_flash_cmd(spi, CMD_M25PXX_RES,
 162                                   idcode, 4);
 163                 if (i)
 164                         return NULL;
 165                 if ((idcode[3] & 0xf0) == 0x10) {
 166                         idcode[0] = 0x20;
 167                         idcode[1] = 0x20;
 168                         idcode[2] = idcode[3] + 1;
 169                 } else {
 170                         return NULL;
 171                 }
 172         }
 173
 174         id = ((idcode[1] << 8) | idcode[2]);
 175
 176         for (i = 0; i < ARRAY_SIZE(stmicro_spi_flash_table); i++) {
 177                 params = &stmicro_spi_flash_table[i];
 178                 if (params->id == id)
 179                         break;
 180         }
 181
 182         if (i == ARRAY_SIZE(stmicro_spi_flash_table)) {
 183                 debug("SF: Unsupported STMicro ID %04x\n", id);
 184                 return NULL;
 185         }
 186
 187         flash = spi_flash_alloc_base(spi, params->name);
 188         if (!flash) {
 189                 debug("SF: Failed to allocate memory\n");
 190                 return NULL;
 191         }
 192
 193         flash->page_size = 256;
 194         flash->sector_size = 256 * params->pages_per_sector;
 195         flash->size = flash->sector_size * params->nr_sectors;
 196
 197         /* for >= 512MiB flashes, use flag status instead of read_status */
 198         if (flash->size >= 0x4000000)
 199                 flash->poll_cmd = CMD_FLAG_STATUS;
 200
 201         return flash;
 202 }