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 static const struct nand_info samsung[] =
  33 {
  34 /*  { id1,  id2, pages_per_block, blocks_per_bank, page_size, spare_size, col_cycles, row_cycles } */
  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 NI(id, x) {id, (struct nand_info*)x, (sizeof(x)/sizeof(struct nand_info))}
  47 static const struct nand_manufacturer all[] =
  48 {
  49     NI(0xEC, samsung),
  50 };
  51
  52 // --------------------------------------------------------------------------------------------------
  53
  54 struct nand_info* nand_identify(unsigned char data[5])
  55  {
  56     unsigned int i;
  57     int found = -1;
  58
  59     for(i = 0; i < (sizeof(all)/sizeof(struct nand_manufacturer)); i++)
  60     {
  61         if(data[0] == all[i].id)
  62         {
  63             found = i;
  64             break;
  65         }
  66     }
  67
  68     if(found < 0)
  69         return NULL;
  70
  71     for(i = 0; i < all[found].total; i++)
  72     {
  73         if(data[1] == all[found].info[i].dev_id &&
  74            data[2] == all[found].info[i].dev_id2)
  75             return &all[found].info[i];
  76     }
  77
  78     return NULL;
  79 }