dfu, nand, ubi: add partubi alt settings for updating ubi partition

updating an ubi partition needs a completely erased mtd partition,
see:
http://lists.infradead.org/pipermail/linux-mtd/2011-May/035416.html

So, add partubi alt setting for the dfu_alt_info environment
variable to mark this partition as an ubi partition. In case we
update an ubi partition, we erase after flashing the image into the
partition, the remaining sektors.

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
Cc: Tom Rini <trini@ti.com>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Scott Wood <scottwood@freescale.com>

diff --git a/drivers/dfu/dfu_nand.c b/drivers/dfu/dfu_nand.c
index 07dee89815c8cd7dc2033f9190ec29d5878d7623..546a4a576000892c305d9d52a95f361132bfa2be 100644 (file)
--- a/drivers/dfu/dfu_nand.c
+++ b/drivers/dfu/dfu_nand.c
@@ -148,11 +148,43 @@ static int dfu_read_medium_nand(struct dfu_entity *dfu, u64 offset, void *buf,
        return ret;
 }
 
+static int dfu_flush_medium_nand(struct dfu_entity *dfu)
+{
+       int ret = 0;
+
+       /* in case of ubi partition, erase rest of the partition */
+       if (dfu->data.nand.ubi) {
+               nand_info_t *nand;
+               nand_erase_options_t opts;
+
+               if (nand_curr_device < 0 ||
+                   nand_curr_device >= CONFIG_SYS_MAX_NAND_DEVICE ||
+                   !nand_info[nand_curr_device].name) {
+                       printf("%s: invalid nand device\n", __func__);
+                       return -1;
+               }
+
+               nand = &nand_info[nand_curr_device];
+
+               memset(&opts, 0, sizeof(opts));
+               opts.offset = dfu->data.nand.start + dfu->offset +
+                               dfu->bad_skip;
+               opts.length = dfu->data.nand.start +
+                               dfu->data.nand.size - opts.offset;
+               ret = nand_erase_opts(nand, &opts);
+               if (ret != 0)
+                       printf("Failure erase: %d\n", ret);
+       }
+
+       return ret;
+}
+
 int dfu_fill_entity_nand(struct dfu_entity *dfu, char *s)
 {
        char *st;
        int ret, dev, part;
 
+       dfu->data.nand.ubi = 0;
        dfu->dev_type = DFU_DEV_NAND;
        st = strsep(&s, " ");
        if (!strcmp(st, "raw")) {
@@ -160,7 +192,7 @@ int dfu_fill_entity_nand(struct dfu_entity *dfu, char *s)
                dfu->data.nand.start = simple_strtoul(s, &s, 16);
                s++;
                dfu->data.nand.size = simple_strtoul(s, &s, 16);
-       } else if (!strcmp(st, "part")) {
+       } else if ((!strcmp(st, "part")) || (!strcmp(st, "partubi"))) {
                char mtd_id[32];
                struct mtd_device *mtd_dev;
                u8 part_num;
@@ -185,7 +217,8 @@ int dfu_fill_entity_nand(struct dfu_entity *dfu, char *s)
 
                dfu->data.nand.start = pi->offset;
                dfu->data.nand.size = pi->size;
-
+               if (!strcmp(st, "partubi"))
+                       dfu->data.nand.ubi = 1;
        } else {
                printf("%s: Memory layout (%s) not supported!\n", __func__, st);
                return -1;
@@ -193,6 +226,7 @@ int dfu_fill_entity_nand(struct dfu_entity *dfu, char *s)
 
        dfu->read_medium = dfu_read_medium_nand;
        dfu->write_medium = dfu_write_medium_nand;
+       dfu->flush_medium = dfu_flush_medium_nand;
 
        /* initial state */
        dfu->inited = 0;

diff --git a/include/dfu.h b/include/dfu.h
index b17b80d14bc4dfa2faf3b3d086a6e29578a41820..a8cbbbeddff324a00a15329a9a899f9174935cf3 100644 (file)
--- a/include/dfu.h
+++ b/include/dfu.h
@@ -59,6 +59,8 @@ struct nand_internal_data {
 
        unsigned int dev;
        unsigned int part;
+       /* for nand/ubi use */
+       unsigned int ubi;
 };
 
 static inline unsigned int get_mmc_blk_size(int dev)