firmware/drivers/nand_id.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2008 by Maurus Cuelenaere
  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
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include <stdlib.h>
  23 #include "nand_id.h"
  24
  25 struct nand_manufacturer
  26 {
  27     unsigned char     id;
  28     struct nand_info* info;
  29     unsigned short    total;
  30 };
  31
  32 /* { pages_per_block, blocks_per_bank, page_size, spare_size, col_cycles, row_cycles } */
  33
  34 static const struct nand_info samsung[] =
  35 {
  36     /* K9F4G08UOM */
  37     {0xDC, 0x10,  64, 4096, 2048,  64, 2, 3},
  38     /* K9K8G08UOM */
  39     {0xD3, 0x51,  64, 8192, 2048,  64, 2, 3},
  40     /* K9LAG08UOM */
  41     {0xD5, 0x55, 128, 8192, 2048,  64, 2, 3},
  42     /* K9LBG08UOM, K9HBG08U1M, K9MCG08U5M */
  43     {0xD7, 0x55, 128, 8192, 4096, 128, 2, 3}
  44 };
  45
  46 #define M(id, x) {id, (struct nand_info*)x, (sizeof(x)/sizeof(struct nand_info))}
  47 static const struct nand_manufacturer all[] =
  48 {
  49     M(0xEC, samsung),
  50 };
  51
  52 struct nand_info* nand_identify(unsigned char data[5])
  53  {
  54     unsigned int i;
  55     int found = -1;
  56     for(i = 0; i < (sizeof(all)/sizeof(struct nand_manufacturer)); i++)
  57     {
  58         if(data[0] == all[i].id)
  59         {
  60             found = i;
  61             break;
  62         }
  63     }
  64     if(found < 0)
  65         return NULL;
  66
  67     for(i = 0; i < all[found].total; i++)
  68     {
  69         if(data[1] == all[found].info[i].dev_id &&
  70            data[2] == all[found].info[i].dev_id2)
  71             return &all[found].info[i];
  72     }
  73
  74     return NULL;
  75 }