michael/u-boot
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

cmd: nand: nand dump with ecc option

Browse Source 
option to show nand dump data ecc corrected as opposed to just raw

Signed-off-by: david regan <dregan@broadcom.com>
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
This commit is contained in:
david regan
2025-08-14 11:04:58 -07:00
committed by Michael Trimarchi
parent b5ce63e135
commit bb5d3a7a1c
1 changed files with 18 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
cmd/nand.c
View File

@@ -160,7 +160,7 @@ free_memory:
}
static int nand_dump(struct mtd_info *mtd, ulong off, int only_oob,
int repeat)
int ecc, int repeat)
{
int i;
u_char *datbuf, *oobbuf, *p;
@@ -192,12 +192,16 @@ static int nand_dump(struct mtd_info *mtd, ulong off, int only_oob,
ops.oobbuf = oobbuf;
ops.len = mtd->writesize;
ops.ooblen = mtd->oobsize;
ops.mode = MTD_OPS_RAW;
if (ecc)
ops.mode = MTD_OPS_PLACE_OOB;
else
ops.mode = MTD_OPS_RAW;
i = mtd_read_oob(mtd, addr, &ops);
if (i < 0) {
printf("Error (%d) reading page %08lx\n", i, off);
printf("Error reading page at offset %08lx, %d %s\n",
off, i, i == -EUCLEAN ? "correctable" :
"uncorrectable, dumping raw data");
ret = 1;
goto free_all;
}
printf("\nPage at offset %08lx dump:\n", off);
@@ -212,7 +216,6 @@ static int nand_dump(struct mtd_info *mtd, ulong off, int only_oob,
p = oobbuf;
print_buffer(0, p, 1, i, 8);
free_all:
free(oobbuf);
free_dat:
free(datbuf);
@@ -697,11 +700,19 @@ static int do_nand(struct cmd_tbl *cmdtp, int flag, int argc,
}
if (strncmp(cmd, "dump", 4) == 0) {
int only_oob, ecc;
if (argc < 3)
goto usage;
only_oob = !strcmp(&cmd[4], ".oob") || !strcmp(&cmd[4], ".ecc.oob") ||
!strcmp(&cmd[4], ".oob.ecc");
ecc = !strcmp(&cmd[4], ".ecc") || !strcmp(&cmd[4], ".ecc.oob") ||
!strcmp(&cmd[4], ".oob.ecc");
off = (int)hextoul(argv[2], NULL);
ret = nand_dump(mtd, off, !strcmp(&cmd[4], ".oob"), repeat);
ret = nand_dump(mtd, off, only_oob, ecc, repeat);
return ret == 0 ? 1 : 0;
}
@@ -1031,7 +1042,7 @@ U_BOOT_LONGHELP(nand,
"nand erase.part [clean] partition - erase entire mtd partition'\n"
"nand erase.chip [clean] - erase entire chip'\n"
"nand bad - show bad blocks\n"
"nand dump[.oob] off - dump page\n"
"nand dump[.oob][.ecc] off - dump raw (default) or ecc corrected page at offset\n"
#ifdef CONFIG_CMD_NAND_WATCH
"nand watch <off> <size> - check an area for bitflips\n"
"nand watch.part <part> - check a partition for bitflips\n"