drivers/mtd/spi/winbond.c

   1 /*
   2  * Copyright 2008, Network Appliance Inc.
   3  * Author: Jason McMullan <mcmullan <at> netapp.com>
   4  * Licensed under the GPL-2 or later.
   5  */
   6
   7 #include <common.h>
   8 #include <malloc.h>
   9 #include <spi_flash.h>
  10
  11 #include "spi_flash_internal.h"
  12
  13 struct winbond_spi_flash_params {
  14         uint16_t        id;
  15         uint16_t        nr_blocks;
  16         const char      *name;
  17 };
  18
  19 static const struct winbond_spi_flash_params winbond_spi_flash_table[] = {
  20         {
  21                 .id                     = 0x3013,
  22                 .nr_blocks              = 8,
  23                 .name                   = "W25X40",
  24         },
  25         {
  26                 .id                     = 0x3015,
  27                 .nr_blocks              = 32,
  28                 .name                   = "W25X16",
  29         },
  30         {
  31                 .id                     = 0x3016,
  32                 .nr_blocks              = 64,
  33                 .name                   = "W25X32",
  34         },
  35         {
  36                 .id                     = 0x3017,
  37                 .nr_blocks              = 128,
  38                 .name                   = "W25X64",
  39         },
  40         {
  41                 .id                     = 0x4014,
  42                 .nr_blocks              = 16,
  43                 .name                   = "W25Q80BL",
  44         },
  45         {
  46                 .id                     = 0x4015,
  47                 .nr_blocks              = 32,
  48                 .name                   = "W25Q16",
  49         },
  50         {
  51                 .id                     = 0x4016,
  52                 .nr_blocks              = 64,
  53                 .name                   = "W25Q32",
  54         },
  55         {
  56                 .id                     = 0x4017,
  57                 .nr_blocks              = 128,
  58                 .name                   = "W25Q64",
  59         },
  60         {
  61                 .id                     = 0x4018,
  62                 .nr_blocks              = 256,
  63                 .name                   = "W25Q128",
  64         },
  65 };
  66
  67 struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
  68 {
  69         const struct winbond_spi_flash_params *params;
  70         struct spi_flash *flash;
  71         unsigned int i;
  72
  73         for (i = 0; i < ARRAY_SIZE(winbond_spi_flash_table); i++) {
  74                 params = &winbond_spi_flash_table[i];
  75                 if (params->id == ((idcode[1] << 8) | idcode[2]))
  76                         break;
  77         }
  78
  79         if (i == ARRAY_SIZE(winbond_spi_flash_table)) {
  80                 debug("SF: Unsupported Winbond ID %02x%02x\n",
  81                                 idcode[1], idcode[2]);
  82                 return NULL;
  83         }
  84
  85         flash = malloc(sizeof(*flash));
  86         if (!flash) {
  87                 debug("SF: Failed to allocate memory\n");
  88                 return NULL;
  89         }
  90
  91         flash->spi = spi;
  92         flash->name = params->name;
  93
  94         flash->write = spi_flash_cmd_write_multi;
  95         flash->erase = spi_flash_cmd_erase;
  96         flash->read = spi_flash_cmd_read_fast;
  97         flash->page_size = 4096;
  98         flash->sector_size = 4096;
  99         flash->size = 4096 * 16 * params->nr_blocks;
 100
 101         return flash;
 102 }