firmware-utils: add a small utility for generating nand flash images with ecc info
SVN-Revision: 16458
This commit is contained in:
Felix Fietkau
parent
a2b97a26e3
commit
a6d8f8be9e
2 changed files with 205 additions and 0 deletions
|
|
@ -46,6 +46,7 @@ define Host/Compile
|
||||||
$(call cc,add_header)
|
$(call cc,add_header)
|
||||||
$(call cc,makeamitbin)
|
$(call cc,makeamitbin)
|
||||||
$(call cc,encode_crc)
|
$(call cc,encode_crc)
|
||||||
|
$(call cc,nand_ecc)
|
||||||
$(call cc2,mkplanexfw sha1)
|
$(call cc2,mkplanexfw sha1)
|
||||||
$(call cc2,mktplinkfw md5)
|
$(call cc2,mktplinkfw md5)
|
||||||
endef
|
endef
|
||||||
|
|
|
||||||
204
tools/firmware-utils/src/nand_ecc.c
Normal file
204
tools/firmware-utils/src/nand_ecc.c
Normal file
|
|
@ -0,0 +1,204 @@
|
||||||
|
/*
|
||||||
|
* calculate ecc code for nand flash
|
||||||
|
*
|
||||||
|
* Copyright (C) 2008 yajin <yajin@vm-kernel.org>
|
||||||
|
* Copyright (C) 2009 Felix Fietkau <nbd@openwrt.org>
|
||||||
|
*
|
||||||
|
* 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 or
|
||||||
|
* (at your option) version 3 of the License.
|
||||||
|
*
|
||||||
|
* This program is distributed in the hope that it will be useful,
|
||||||
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
* GNU General Public License for more details.
|
||||||
|
*
|
||||||
|
* You should have received a copy of the GNU General Public License
|
||||||
|
* along with this program; if not, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||||
|
* MA 02111-1307 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
|
||||||
|
#include <sys/types.h>
|
||||||
|
#include <sys/stat.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <fcntl.h>
|
||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
#define DEF_NAND_PAGE_SIZE 2048
|
||||||
|
#define DEF_NAND_OOB_SIZE 64
|
||||||
|
#define DEF_NAND_ECC_OFFSET 0x28
|
||||||
|
|
||||||
|
static int page_size = DEF_NAND_PAGE_SIZE;
|
||||||
|
static int oob_size = DEF_NAND_OOB_SIZE;
|
||||||
|
static int ecc_offset = DEF_NAND_ECC_OFFSET;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Pre-calculated 256-way 1 byte column parity
|
||||||
|
*/
|
||||||
|
static const uint8_t nand_ecc_precalc_table[] = {
|
||||||
|
0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00,
|
||||||
|
0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
|
||||||
|
0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
|
||||||
|
0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
|
||||||
|
0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
|
||||||
|
0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
|
||||||
|
0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
|
||||||
|
0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
|
||||||
|
0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30, 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
|
||||||
|
0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55, 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
|
||||||
|
0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56, 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
|
||||||
|
0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33, 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
|
||||||
|
0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59, 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
|
||||||
|
0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c, 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
|
||||||
|
0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f, 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
|
||||||
|
0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a, 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* nand_calculate_ecc - [NAND Interface] Calculate 3-byte ECC for 256-byte block
|
||||||
|
* @dat: raw data
|
||||||
|
* @ecc_code: buffer for ECC
|
||||||
|
*/
|
||||||
|
int nand_calculate_ecc(const uint8_t *dat,
|
||||||
|
uint8_t *ecc_code)
|
||||||
|
{
|
||||||
|
uint8_t idx, reg1, reg2, reg3, tmp1, tmp2;
|
||||||
|
int i;
|
||||||
|
|
||||||
|
/* Initialize variables */
|
||||||
|
reg1 = reg2 = reg3 = 0;
|
||||||
|
|
||||||
|
/* Build up column parity */
|
||||||
|
for(i = 0; i < 256; i++) {
|
||||||
|
/* Get CP0 - CP5 from table */
|
||||||
|
idx = nand_ecc_precalc_table[*dat++];
|
||||||
|
reg1 ^= (idx & 0x3f);
|
||||||
|
|
||||||
|
/* All bit XOR = 1 ? */
|
||||||
|
if (idx & 0x40) {
|
||||||
|
reg3 ^= (uint8_t) i;
|
||||||
|
reg2 ^= ~((uint8_t) i);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Create non-inverted ECC code from line parity */
|
||||||
|
tmp1 = (reg3 & 0x80) >> 0; /* B7 -> B7 */
|
||||||
|
tmp1 |= (reg2 & 0x80) >> 1; /* B7 -> B6 */
|
||||||
|
tmp1 |= (reg3 & 0x40) >> 1; /* B6 -> B5 */
|
||||||
|
tmp1 |= (reg2 & 0x40) >> 2; /* B6 -> B4 */
|
||||||
|
tmp1 |= (reg3 & 0x20) >> 2; /* B5 -> B3 */
|
||||||
|
tmp1 |= (reg2 & 0x20) >> 3; /* B5 -> B2 */
|
||||||
|
tmp1 |= (reg3 & 0x10) >> 3; /* B4 -> B1 */
|
||||||
|
tmp1 |= (reg2 & 0x10) >> 4; /* B4 -> B0 */
|
||||||
|
|
||||||
|
tmp2 = (reg3 & 0x08) << 4; /* B3 -> B7 */
|
||||||
|
tmp2 |= (reg2 & 0x08) << 3; /* B3 -> B6 */
|
||||||
|
tmp2 |= (reg3 & 0x04) << 3; /* B2 -> B5 */
|
||||||
|
tmp2 |= (reg2 & 0x04) << 2; /* B2 -> B4 */
|
||||||
|
tmp2 |= (reg3 & 0x02) << 2; /* B1 -> B3 */
|
||||||
|
tmp2 |= (reg2 & 0x02) << 1; /* B1 -> B2 */
|
||||||
|
tmp2 |= (reg3 & 0x01) << 1; /* B0 -> B1 */
|
||||||
|
tmp2 |= (reg2 & 0x01) << 0; /* B7 -> B0 */
|
||||||
|
|
||||||
|
/* Calculate final ECC code */
|
||||||
|
#ifdef CONFIG_MTD_NAND_ECC_SMC
|
||||||
|
ecc_code[0] = ~tmp2;
|
||||||
|
ecc_code[1] = ~tmp1;
|
||||||
|
#else
|
||||||
|
ecc_code[0] = ~tmp1;
|
||||||
|
ecc_code[1] = ~tmp2;
|
||||||
|
#endif
|
||||||
|
ecc_code[2] = ((~reg1) << 2) | 0x03;
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* usage: bb-nandflash-ecc start_address size
|
||||||
|
*/
|
||||||
|
void usage(const char *prog)
|
||||||
|
{
|
||||||
|
fprintf(stderr, "Usage: %s [options] <input> <output>\n"
|
||||||
|
"Options:\n"
|
||||||
|
" -p <pagesize> NAND page size (default: %d)\n"
|
||||||
|
" -o <oobsize> NAND OOB size (default: %d)\n"
|
||||||
|
" -e <offset> NAND ECC offset (default: %d)\n"
|
||||||
|
"\n", prog, DEF_NAND_PAGE_SIZE, DEF_NAND_OOB_SIZE,
|
||||||
|
DEF_NAND_ECC_OFFSET);
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
/*start_address/size does not include oob
|
||||||
|
*/
|
||||||
|
int main(int argc, char **argv)
|
||||||
|
{
|
||||||
|
uint8_t *page_data = NULL;
|
||||||
|
uint8_t *ecc_data;
|
||||||
|
int infd = -1, outfd = -1;
|
||||||
|
int ret = 1;
|
||||||
|
ssize_t bytes;
|
||||||
|
int ch;
|
||||||
|
|
||||||
|
while ((ch = getopt(argc, argv, "e:o:p:")) != -1) {
|
||||||
|
switch(ch) {
|
||||||
|
case 'p':
|
||||||
|
page_size = strtoul(optarg, NULL, 0);
|
||||||
|
break;
|
||||||
|
case 'o':
|
||||||
|
oob_size = strtoul(optarg, NULL, 0);
|
||||||
|
break;
|
||||||
|
case 'e':
|
||||||
|
ecc_offset = strtoul(optarg, NULL, 0);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
usage(argv[0]);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
argc -= optind;
|
||||||
|
if (argc < 2)
|
||||||
|
usage(argv[0]);
|
||||||
|
|
||||||
|
argv += optind;
|
||||||
|
|
||||||
|
infd = open(argv[0], O_RDONLY, 0);
|
||||||
|
if (infd < 0) {
|
||||||
|
perror("open input file");
|
||||||
|
goto out;
|
||||||
|
}
|
||||||
|
|
||||||
|
outfd = open(argv[1], O_WRONLY|O_CREAT|O_TRUNC, 0644);
|
||||||
|
if (outfd < 0) {
|
||||||
|
perror("open output file");
|
||||||
|
goto out;
|
||||||
|
}
|
||||||
|
|
||||||
|
page_data = malloc(page_size + oob_size);
|
||||||
|
|
||||||
|
while ((bytes = read(infd, page_data, page_size)) == page_size) {
|
||||||
|
int j;
|
||||||
|
|
||||||
|
ecc_data = page_data + page_size + ecc_offset;
|
||||||
|
for (j = 0; j < page_size / 256; j++)
|
||||||
|
{
|
||||||
|
nand_calculate_ecc(page_data + j * 256, ecc_data);
|
||||||
|
ecc_data += 3;
|
||||||
|
}
|
||||||
|
write(outfd, page_data, page_size + oob_size);
|
||||||
|
}
|
||||||
|
|
||||||
|
ret = 0;
|
||||||
|
out:
|
||||||
|
if (infd >= 0)
|
||||||
|
close(infd);
|
||||||
|
if (outfd >= 0)
|
||||||
|
close(outfd);
|
||||||
|
if (page_data)
|
||||||
|
free(page_data);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
Loading…
Reference in a new issue