dfu, nand: before write a buffer to nand, erase the nand sectors

[karo-tx-uboot.git] / drivers / dfu / dfu_nand.c

diff --git a/drivers/dfu/dfu_nand.c b/drivers/dfu/dfu_nand.c
index 7dc89b2f2b483a9a96eae3606928a4b30591bb37..07dee89815c8cd7dc2033f9190ec29d5878d7623 100644 (file)
--- 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",