diff options
| author | Heiko Schocher | 2013-06-24 18:50:40 +0200 |
|---|---|---|
| committer | Scott Wood | 2013-06-24 18:17:23 -0500 |
| commit | a67cc37e698107ebe7fc89a9046105f31802972e (patch) | |
| tree | 2ebaee7675ccfa9bb3c7f43df17a99a6253888cb | |
| parent | 9b80aa8ec90d8606346573b92d098470fc320601 (diff) | |
dfu, nand: before write a buffer to nand, erase the nand sectors
before writing the received buffer to nand, erase the nand
sectors. If not doing this, nand write fails. See for
more info here:
http://lists.denx.de/pipermail/u-boot/2013-June/156361.html
Using the nand erase option "spread", maybe overwrite
blocks on, for example another mtd partition, if the
erasing range contains bad blocks.
So a limit option is added to nand_erase_opts()
Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Scott Wood <scottwood@freescale.com>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@ti.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
| -rw-r--r-- | drivers/dfu/dfu_nand.c | 18 | ||||
| -rw-r--r-- | drivers/mtd/nand/nand_util.c | 4 | ||||
| -rw-r--r-- | include/nand.h | 2 |
3 files changed, 22 insertions, 2 deletions
diff --git a/drivers/dfu/dfu_nand.c b/drivers/dfu/dfu_nand.c index 7dc89b2f2b4..07dee89815c 100644 --- a/drivers/dfu/dfu_nand.c +++ b/drivers/dfu/dfu_nand.c @@ -63,12 +63,26 @@ static int nand_block_op(enum dfu_nand_op op, struct dfu_entity *dfu, nand = &nand_info[nand_curr_device]; - if (op == DFU_OP_READ) + if (op == DFU_OP_READ) { ret = nand_read_skip_bad(nand, start, &count, &actual, lim, buf); - else + } else { + nand_erase_options_t opts; + + memset(&opts, 0, sizeof(opts)); + opts.offset = start; + opts.length = count; + opts.spread = 1; + opts.quiet = 1; + opts.lim = lim; + /* first erase */ + ret = nand_erase_opts(nand, &opts); + if (ret) + return ret; + /* then write */ ret = nand_write_skip_bad(nand, start, &count, &actual, lim, buf, 0); + } if (ret != 0) { printf("%s: nand_%s_skip_bad call failed at %llx!\n", diff --git a/drivers/mtd/nand/nand_util.c b/drivers/mtd/nand/nand_util.c index d81972ca27b..1d22b5240d4 100644 --- a/drivers/mtd/nand/nand_util.c +++ b/drivers/mtd/nand/nand_util.c @@ -120,6 +120,10 @@ int nand_erase_opts(nand_info_t *meminfo, const nand_erase_options_t *opts) WATCHDOG_RESET(); + if (opts->lim && (erase.addr >= (opts->offset + opts->lim))) { + puts("Size of erase exceeds limit\n"); + return -EFBIG; + } if (!opts->scrub && bbtest) { int ret = mtd_block_isbad(meminfo, erase.addr); if (ret > 0) { diff --git a/include/nand.h b/include/nand.h index 26190e4137d..228d87127ca 100644 --- a/include/nand.h +++ b/include/nand.h @@ -125,6 +125,8 @@ struct nand_erase_options { /* Don't include skipped bad blocks in size to be erased */ int spread; + /* maximum size that actual may be in order to not exceed the buf */ + loff_t lim; }; typedef struct nand_erase_options nand_erase_options_t; |