rockbox/firmware/drivers/nand_id.c

/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2008 by Maurus Cuelenaere
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/

#include <stdlib.h>
#include "nand_id.h"

struct nand_manufacturer
{
    unsigned char        id;
    struct nand_info*  info;
    unsigned short    total;
};

static const struct nand_info samsung[] =
{
/*  { id1,  id2, pages_per_block, blocks_per_bank, page_size, spare_size, col_cycles, row_cycles } */

                                              /* K9F4G08UOM */
    {0xDC, 0x10,              64,            4096,      2048,         64,          2,          3 },
                                              /* K9K8G08UOM */
    {0xD3, 0x51,              64,            8192,      2048,         64,          2,          3 },
                                              /* K9LAG08UOM */
    {0xD5, 0x55,             128,            8192,      2048,         64,          2,          3 },
                                 /* K9LBG08UOM, K9HBG08U1M, K9MCG08U5M */
    {0xD7, 0x55,             128,            8192,      4096,        128,          2,          3 },
};

#define NI(id, x) {id, (struct nand_info*)x, (sizeof(x)/sizeof(struct nand_info))}
static const struct nand_manufacturer all[] =
{
    NI(0xEC, samsung),
};

// --------------------------------------------------------------------------------------------------

struct nand_info* nand_identify(unsigned char data[5])
 {
    unsigned int i;
    int found = -1;
    
    for(i = 0; i < (sizeof(all)/sizeof(struct nand_manufacturer)); i++)
    {
        if(data[0] == all[i].id)
        {
            found = i;
            break;
        }
    }
    
    if(found < 0)
        return NULL;
    
    for(i = 0; i < all[found].total; i++)
    {
        if(data[1] == all[found].info[i].dev_id &&
           data[2] == all[found].info[i].dev_id2)
            return &all[found].info[i];
    }
    
    return NULL;
}