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.majew...@majess.pl>
---
drivers/dfu/dfu.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
include/dfu.h | 1 +
2 files changed, 49 insertions(+)
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index 332be67..3fbbecc 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -568,3 +568,51 @@ int dfu_get_alt(char *name)
return -ENODEV;
}
+
+/**
+ * dfu_write_from_mem_addr - this function adds support for writing data
+ * starting from fixed memory address (like
$loadaddr)
+ * to dfu managed medium (e.g. NAND, MMC)
+ *
+ * @param dfu - dfu entity to which we want to store data
+ * @param buf - fixed memory addres from where data starts
+ * @param size - number of bytes to write
+ *
+ * @return - 0 on success, other value on failure
+ */
+int dfu_write_from_mem_addr(struct dfu_entity *dfu, void *buf, int size)
+{
+ unsigned long dfu_buf_size, write;
+ int i, ret = 0, left = size;
+ 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 = (dfu_buf_size < left ? dfu_buf_size : left);
+
+ debug("%s: dp: 0x%p left: %d 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;
+}
diff --git a/include/dfu.h b/include/dfu.h
index adad863..ff4db5d 100644
--- a/include/dfu.h
+++ b/include/dfu.h
@@ -162,6 +162,7 @@ bool dfu_usb_get_reset(void);
int dfu_read(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
int dfu_write(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
int dfu_flush(struct dfu_entity *de, void *buf, int size, int blk_seq_num);
+int dfu_write_from_mem_addr(struct dfu_entity *dfu, void *buf, int size);
/* Device specific */
#ifdef CONFIG_DFU_MMC
extern int dfu_fill_entity_mmc(struct dfu_entity *dfu, char *devstr, char *s);
--
2.1.4
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