2 * Copyright (C) 2010 - Maxim Levitsky
4 * mtd_probe is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * mtd_probe is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with mtd_probe; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301 USA
22 #include <mtd/mtd-user.h>
24 #include <sys/types.h>
30 #include "mtd_probe.h"
32 static const uint8_t cis_signature[] = {
33 0x01, 0x03, 0xD9, 0x01, 0xFF, 0x18, 0x02, 0xDF, 0x01, 0x20
37 void probe_smart_media(int mtd_fd, mtd_info_t* info)
43 char* cis_buffer = malloc(SM_SECTOR_SIZE);
50 if (info->type != MTD_NANDFLASH)
53 sector_size = info->writesize;
54 block_size = info->erasesize;
55 size_in_megs = info->size / (1024 * 1024);
57 if (sector_size != SM_SECTOR_SIZE && sector_size != SM_SMALL_PAGE)
60 switch(size_in_megs) {
73 for (offset = 0 ; offset < block_size * spare_count ;
74 offset += sector_size) {
75 lseek(mtd_fd, SEEK_SET, offset);
76 if (read(mtd_fd, cis_buffer, SM_SECTOR_SIZE) == SM_SECTOR_SIZE){
85 if (memcmp(cis_buffer, cis_signature, sizeof(cis_signature)) != 0 &&
86 (memcmp(cis_buffer + SM_SMALL_PAGE, cis_signature,
87 sizeof(cis_signature)) != 0))
90 printf("MTD_FTL=smartmedia\n");