forked from Openwrt-EcoNet/openwrt
e15be27627
The SmartFiber XP8421-B is a fiber modem which is available for $20 online and has 512MB of memory, 256MB of SPI NAND flash and 2 USB 2.0 ports in addition to ethernet, wifi and XPON. Because EcoNet is not currently producing evaluation boards, the XP8421-B stands in as a convenient, low cost, off-the-shelf, representitive example of the capabilities of the EN751221 econet processor. This is also the example board that is included in the upstream Linux patchset. The XP8421-B, and apparently many other devices of this platform, use a dual-image layout. I have chosen to reuse this to support dual-boot between OpenWRT and the factory firmware. Certain design decisions were made with the goal of not overwriting data that is used by the factory OS. This commit also introduces a utility for switching between OS_A and OS_B which are used for OpenWRT and Factory OS respectively. Flashing instructions (from bootloader): Build and then locate the squashfs-tclinux.trx image file Get the length of that file in hex: printf '%X\n' "$(stat -c%s the-file-squashfs-tclinux.trx)" Connect to device with xmodem capability, e.g. picocom --send-cmd lsx -vv -b 115200 /dev/ttyUSB0 Switch device on and press a key within 3 seconds Enter bootloader username and password: telecomadmin nE7jA%5m Type: xmdm 80020000 <file length hex> Quickly start xmodem and send the file, in picocom that is ctrl+a ctrl+s <paste-the-file-name> enter If the transfer fails to start, wait 30 seconds to a minute for the bootloader prompt to return and then try the command again. Once the transfer has completed successfully, type the following flash 80000 80020000 <file length hex> Type go or simply restart the device to boot into OpenWRT Signed-off-by: Caleb James DeLisle <cjd@cjdns.fr>