My testresults:
unpatched ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nand read 0x20000000 0x00100000 0x03000000 no problem
nand write 0x20000000 0x00100000 0x00c00000 no problem
nand write 0x20000000 0x00100000 0x00d00000 the watchdog will reset the processor
patched ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nand read 0x20000000 0x00100000 0x03000000 no problem
nand write 0x20000000 0x00100000 0x07f00000 no problem
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
So, reading was never a problem, only writing. And that is fixed now! Thanks!
On 02/03/2011 01:23 AM, Scott Wood wrote:
Poke the watchdog in a variety of looping constructs, which could take a long time to complete.
Signed-off-by: Scott Woodscottwood@freescale.com
Jaap, does this resolve the watchdog problems you were seeing?
drivers/mtd/nand/nand_base.c | 6 ++++++ drivers/mtd/nand/nand_util.c | 2 ++ 2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 70c0593..b9bd394 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1156,6 +1156,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, oob = ops->oobbuf;
while(1) {
WATCHDOG_RESET();- bytes = min(mtd->writesize - col, readlen); aligned = (bytes == mtd->writesize);
@@ -1485,6 +1487,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, page = realpage& chip->pagemask;
while(1) {
WATCHDOG_RESET();sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd);
len = min(len, readlen);
@@ -1884,6 +1887,8 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, memset(chip->oob_poi, 0xff, mtd->oobsize);
while(1) {
WATCHDOG_RESET();- int bytes = mtd->writesize; int cached = writelen> bytes&& page != blockmask; uint8_t *wbuf = buf;
@@ -2215,6 +2220,7 @@ int nand_erase_nand(struct mtd_info *mtd, struct erase_info *instr, instr->state = MTD_ERASING;
while (len) {
WATCHDOG_RESET();*/
- heck if we have a bad block, we do not erase bad blocks !
diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c index 8b4f738..5a6f7ae 100644 --- a/drivers/mtd/nand/nand_util.c +++ b/drivers/mtd/nand/nand_util.c @@ -542,6 +542,8 @@ int nand_write_skip_bad(nand_info_t *nand, loff_t offset, size_t *length,
pages = write_size / pagesize_oob; for (page = 0; page< pages; page++) {
WATCHDOG_RESET();ops.datbuf = p_buffer; ops.oobbuf = ops.datbuf + pagesize;