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                 .id                     = 0x4019,
  67                 .nr_blocks              = 512,
  68                 .name                   = "W25Q256",
  69         },
  70         {
  71                 .id                     = 0x5014,
  72                 .nr_blocks              = 128,
  73                 .name                   = "W25Q80",
  74         },
  75         {
  76                 .id                     = 0x6016,
  77                 .nr_blocks              = 512,
  78                 .name                   = "W25Q32DW",
  79         },
  80         {
  81                 .id                     = 0x6017,
  82                 .nr_blocks              = 128,
  83                 .name                   = "W25Q64DW",
  84         },
  85 };
  86
  87 struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)
  88 {
  89         const struct winbond_spi_flash_params *params;
  90         struct spi_flash *flash;
  91         unsigned int i;
  92
  93         for (i = 0; i < ARRAY_SIZE(winbond_spi_flash_table); i++) {
  94                 params = &winbond_spi_flash_table[i];
  95                 if (params->id == ((idcode[1] << 8) | idcode[2]))
  96                         break;
  97         }
  98
  99         if (i == ARRAY_SIZE(winbond_spi_flash_table)) {
 100                 debug("SF: Unsupported Winbond ID %02x%02x\n",
 101                                 idcode[1], idcode[2]);
 102                 return NULL;
 103         }
 104
 105         flash = spi_flash_alloc_base(spi, params->name);
 106         if (!flash) {
 107                 debug("SF: Failed to allocate memory\n");
 108                 return NULL;
 109         }
 110
 111         flash->page_size = 256;
 112         flash->sector_size = 4096;
 113         flash->size = 4096 * 16 * params->nr_blocks;
 114
 115         return flash;
 116 }