[U-Boot-Users] [PATCH] "nand lock status" bug fix
Conke Hu
conke.hu at gmail.com
Wed Jul 18 22:36:48 CEST 2007
there are 2 bugs in the code of nand command "nand lock status"
(function do_nand() in common/cmd_nand.c):
1. "last_status" defined but never step forward.
2. the last page never be printed
the following patch fixes them.
Signed-off-by: conke.hu at gmail.com
----------------------------------------
diff --git a/common/cmd_nand.c b/common/cmd_nand.c
index cb62661..7e00c97 100644
--- a/common/cmd_nand.c
+++ b/common/cmd_nand.c
@@ -388,7 +388,7 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc,
char *argv[])
if (status) {
ulong block_start = 0;
ulong off;
- int last_status = -1;
+ int last_status;
struct nand_chip *nand_chip = nand->priv;
/* check the WP bit */
@@ -396,16 +396,15 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int
argc, char *argv[])
printf("device is %swrite protected\n",
(nand_chip->read_byte(nand) & 0x80 ?
"NOT " : "" ) );
-
- for (off = 0; off < nand->size; off += nand->oobblock) {
- int s = nand_get_lock_status(nand, off);
+
+ last_status = nand_get_lock_status(nand, 0);
+ for (off = nand->oobblock; off < nand->size;
off += nand->oobblock) {
+ int cur_status =
nand_get_lock_status(nand, off);
/* print message only if status has changed
* or at end of chip
*/
- if (off == nand->size - nand->oobblock
- || (s != last_status && off != 0)) {
-
+ if (cur_status != last_status) {
printf("%08x - %08x: %8d pages
%s%s%s\n",
block_start,
off-1,
@@ -413,10 +412,20 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int
argc, char *argv[])
((last_status &
NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
((last_status &
NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
((last_status &
NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
+
+ last_status = cur_status;
+ block_start = off;
}
+ }
+
+ printf("%08x - %08x: %8d pages %s%s%s\n",
+ block_start,
+ off-1,
+ (off-block_start)/nand->oobblock,
+ ((last_status &
NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
+ ((last_status & NAND_LOCK_STATUS_LOCK)
? "LOCK " : ""),
+ ((last_status &
NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
- last_status = s;
- }
} else {
if (!nand_lock(nand, tight)) {
puts("NAND flash successfully locked\n");
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