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authorLukasz Majewski <l.majewski@majess.pl>2015-08-24 00:21:46 +0200
committerMarek Vasut <marex@denx.de>2015-09-07 13:41:04 +0200
commit2092e4610485618ec7a676ff8e6d297ea9dca3d5 (patch)
treec7fad72d813461d3b7e548786ed9606441b39172 /drivers
parent2d50d68a4ca1cce82899c9f0cfca17edf34bb254 (diff)
dfu: tftp: update: Add dfu_write_from_mem_addr() function
This function allows writing via DFU data stored from fixed buffer address (like e.g. loadaddr env variable). Such predefined buffers are used in the update_tftp() code. In fact this function is a wrapper on the dfu_write() and dfu_flush(). Signed-off-by: Lukasz Majewski <l.majewski@majess.pl> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/dfu/dfu.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index 2267dbfb518..6cf240de22d 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -568,3 +568,40 @@ int dfu_get_alt(char *name)
return -ENODEV;
}
+
+int dfu_write_from_mem_addr(struct dfu_entity *dfu, void *buf, int size)
+{
+ unsigned long dfu_buf_size, write, left = size;
+ int i, ret = 0;
+ void *dp = buf;
+
+ /*
+ * Here we must call dfu_get_buf(dfu) first to be sure that dfu_buf_size
+ * has been properly initialized - e.g. if "dfu_bufsiz" has been taken
+ * into account.
+ */
+ dfu_get_buf(dfu);
+ dfu_buf_size = dfu_get_buf_size();
+ debug("%s: dfu buf size: %lu\n", __func__, dfu_buf_size);
+
+ for (i = 0; left > 0; i++) {
+ write = min(dfu_buf_size, left);
+
+ debug("%s: dp: 0x%p left: %lu write: %lu\n", __func__,
+ dp, left, write);
+ ret = dfu_write(dfu, dp, write, i);
+ if (ret) {
+ error("DFU write failed\n");
+ return ret;
+ }
+
+ dp += write;
+ left -= write;
+ }
+
+ ret = dfu_flush(dfu, NULL, 0, i);
+ if (ret)
+ error("DFU flush failed!");
+
+ return ret;
+}