3 * This file is part of mtd_probe
5 * Copyright (C) 2010 - Maxim Levitsky
7 * mtd_probe is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * mtd_probe is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with mtd_probe; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301 USA
25 #include <mtd/mtd-user.h>
27 #include <sys/types.h>
33 #include "mtd_probe.h"
35 static const uint8_t cis_signature[] = {
36 0x01, 0x03, 0xD9, 0x01, 0xFF, 0x18, 0x02, 0xDF, 0x01, 0x20
40 void probe_smart_media(int mtd_fd, mtd_info_t* info) {
42 char* cis_buffer = malloc(SM_SECTOR_SIZE);
46 if (info->type != MTD_NANDFLASH)
49 int sector_size = info->writesize;
50 int block_size = info->erasesize;
51 int size_in_megs = info->size / (1024 * 1024);
55 if (sector_size != SM_SECTOR_SIZE && sector_size != SM_SMALL_PAGE)
58 switch(size_in_megs) {
75 for (offset = 0 ; offset < block_size * spare_count ;
76 offset += sector_size) {
78 lseek(mtd_fd, SEEK_SET, offset);
79 if (read(mtd_fd, cis_buffer, SM_SECTOR_SIZE) == SM_SECTOR_SIZE){
88 if (memcmp(cis_buffer, cis_signature, sizeof(cis_signature)) != 0 &&
89 (memcmp(cis_buffer + SM_SMALL_PAGE, cis_signature,
90 sizeof(cis_signature)) != 0))
93 printf("MTD_FTL=smartmedia\n");