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 /*
  35     id1, id2
  36     pages/block, blocks, page_size, spare_size, col_cycles, row_cycles, planes
  37 */
  38     {0xDC, 0x10, /* K9F4G08UOM */
  39      64,         4096,   2048,      64,         2,          3,          1 },
  40
  41     {0xD3, 0x51, /* K9K8G08UOM */
  42      64,         8192,   2048,      64,         2,          3,          1 },
  43
  44     {0xD5, 0x14, /* K9GAG08UOM */
  45      128,        4096,   4096,      128,        2,          3,          2 },
  46
  47     {0xD5, 0x55, /* K9LAG08UOM, K9HBG08U1M, K9MCG08U5M */
  48      128,        8192,   2048,      64,         2,          3,          4 },
  49
  50     {0xD7, 0x55, /* K9LBG08UOM */
  51      128,        8192,   4096,      128,        2,          3,          4 },
  52 };
  53
  54 #define NI(id, x) {id, (struct nand_info*)x, (sizeof(x)/sizeof(struct nand_info))}
  55 static const struct nand_manufacturer all[] =
  56 {
  57     NI(0xEC, samsung),
  58 };
  59
  60 // -----------------------------------------------------------------------------
  61
  62 struct nand_info* nand_identify(unsigned char data[5])
  63  {
  64     unsigned int i;
  65     int found = -1;
  66
  67     for(i = 0; i < (sizeof(all)/sizeof(struct nand_manufacturer)); i++)
  68     {
  69         if(data[0] == all[i].id)
  70         {
  71             found = i;
  72             break;
  73         }
  74     }
  75
  76     if(found < 0)
  77         return NULL;
  78
  79     for(i = 0; i < all[found].total; i++)
  80     {
  81         if(data[1] == all[found].info[i].dev_id &&
  82            data[2] == all[found].info[i].dev_id2)
  83             return &all[found].info[i];
  84     }
  85
  86     return NULL;
  87 }