• Digi-CCWMX53

Digi ConnectCore i.MX53 / Wi-i.MX53

More details: http://www.digi.com/products/model?mid=3953

Building a custom U-Boot

Requirements:

• gmake
• gsed

First build the xdev target:

$ cd freebsd
$ make xdev XDEV=arm XDEV_ARCH=arm

Then build U-Boot:

$ git clone https://github.com/rpaulo/uboot-ccwmx53-digi.git
$ cd uboot-ccwmx53-digi
$ gmake ccwmx51js_config
$ gmake CROSS_COMPILE=armv6-freebsd-

Replacing the U-Boot in flash

• Setup DHCP and a TFTP server serving u-boot-ccwmx53js.bin.

• Type update uboot

• Answer the questions and U-Boot will update itself

If you end up installing a broken U-Boot, you can still boot off SD card. See the next section.

U-Boot from SD card

To boot U-Boot from the SD card slot, change S8 (near Camera 1) to this configuration:

You need to dd u-boot-ccwmx53js.bin to the first sectors of the SD card to be able to boot.

U-Boot setup for network booting (ubldr)

setenv loadbootsc 0
setenv bootcmd 'dhcp; go 0x70800054'
saveenv
reset

U-Boot setup for network booting (kernel booting)

setenv loadbootsc 0
setenv bootcmd 'dhcp; tftpboot 0x70800000 kernel.ccwmx53; go 0x70800100'
saveenv
reset