This commit adds initial support for using tftp for downloading and
upgrading firmware on the device.
Signed-off-by: Lukasz Majewski <l.majew...@majess.pl>
---
drivers/dfu/Makefile | 1 +
drivers/dfu/dfu_tftp.c | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++
include/dfu.h | 11 ++++++++
3 files changed, 88 insertions(+)
create mode 100644 drivers/dfu/dfu_tftp.c
diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile
index 5cc535e..43249ce 100644
--- a/drivers/dfu/Makefile
+++ b/drivers/dfu/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_DFU_MMC) += dfu_mmc.o
obj-$(CONFIG_DFU_NAND) += dfu_nand.o
obj-$(CONFIG_DFU_RAM) += dfu_ram.o
obj-$(CONFIG_DFU_SF) += dfu_sf.o
+obj-$(CONFIG_DFU_TFTP) += dfu_tftp.o
diff --git a/drivers/dfu/dfu_tftp.c b/drivers/dfu/dfu_tftp.c
new file mode 100644
index 0000000..26539f2
--- /dev/null
+++ b/drivers/dfu/dfu_tftp.c
@@ -0,0 +1,76 @@
+/*
+ * (C) Copyright 2015
+ * Lukasz Majewski <l.majew...@majess.pl>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <errno.h>
+#include <dfu.h>
+
+int dfu_tftp_write(char *dfu_entity_name, unsigned int addr, unsigned int len)
+{
+ char *s, *sb, *interface, *devstring;
+ int alt_setting_num, ret;
+ struct dfu_entity *dfu;
+
+ debug("%s: name: %s addr: 0x%x len: %d\n", __func__, dfu_entity_name,
+ addr, len);
+
+ interface = getenv("update_tftp_dfu_interface");
+ if (interface == NULL) {
+ error("TFTP DFU: 'interface' not defined\n");
+ return -EINVAL;
+ }
+
+ devstring = getenv("update_tftp_dfu_devstring");
+ if (devstring == NULL) {
+ error("TFTP DFU: 'devstring' not defined\n");
+ return -EINVAL;
+ }
+
+ ret = dfu_init_env_entities(interface, devstring);
+ if (ret)
+ goto done;
+
+ /*
+ * We need to copy name pointed by *dfu_entity_name since this text
+ * is the integral part of the FDT image.
+ * Any implicit modification (i.e. done by strsep()) will corrupt
+ * the FDT image and prevent other images to be stored.
+ */
+ s = strdup(dfu_entity_name);
+ sb = s;
+ if (!s) {
+ ret = -ENOMEM;
+ goto done;
+ }
+
+ strsep(&s, "@");
+ debug("%s: image name: %s strlen: %d\n", __func__, sb, strlen(sb));
+
+ alt_setting_num = dfu_get_alt(sb);
+ free(sb);
+ if (alt_setting_num < 0) {
+ error("Alt setting [%d] to write not found!",
+ alt_setting_num);
+ ret = -ENODEV;
+ goto done;
+ }
+
+ dfu = dfu_get_entity(alt_setting_num);
+ if (!dfu) {
+ error("DFU entity for alt: %d not found!", alt_setting_num);
+ ret = -ENODEV;
+ goto done;
+ }
+
+ ret = dfu_write_from_mem_addr(dfu, (void *)addr, len);
+
+done:
+ dfu_free_entities();
+
+ return ret;
+}
diff --git a/include/dfu.h b/include/dfu.h
index 7d31abd..adad863 100644
--- a/include/dfu.h
+++ b/include/dfu.h
@@ -207,5 +207,16 @@ static inline int dfu_fill_entity_sf(struct dfu_entity
*dfu, char *devstr,
}
#endif
+#ifdef CONFIG_DFU_TFTP
+int dfu_tftp_write(char *dfu_entity_name, unsigned int addr, unsigned int len);
+#else
+static inline int dfu_tftp_write(char *dfu_entity_name, unsigned int addr,
+ unsigned int len)
+{
+ puts("TFTP write support for DFU not available!\n");
+ return -1;
+}
+#endif
+
int dfu_add(struct usb_configuration *c);
#endif /* __DFU_ENTITY_H_ */
--
2.1.4
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