Backing up the current firmware from U-Boot over serial can take hours.
Booting a working Linux image for backup purposes is not always an option.
Using the tftpput command in U-Boot is the fastest and easiest way.
tftpput will upload the contents of a memory region to the TFTP server.
The IP address of the server is stored in the serverip variable.
Usage:
tftpput <memaddr> <length> <filename>
Example for a complete flash backup of an o2 Box 6431 (VGV7510KW22):
VGV7510KW22 # tftpput 0xB0000000 0x1000000 o2boxbackup.bin
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
--- /dev/null
+++ b/include/configs/openwrt-lantiq-common.h
-@@ -0,0 +1,39 @@
+@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2013 Luka Perkov <luka@openwrt.org>
+ *
+/* Commands */
+#if defined(CONFIG_LTQ_SUPPORT_ETHERNET)
+#define CONFIG_CMD_PING
++#define CONFIG_CMD_TFTPPUT
+#endif
+
+/* Compression */