Mastering Embedded Linux Programming - Second Edition

Using barebox

Using barebox at the command line you can see the similarities with Linux. First, you can see that there are filesystem commands such as ls, and there is a /dev directory:

# ls /devfull     mdio0-phy00 mem     mmc0    mmc0.0mmc0.1   mmc1        mmc1.0  null    ram0     zero

The device /dev/mmc0.0 is the first partition on the microSD card, which contains the kernel and initial ramdisk. You can mount it like this:

# mount /dev/mmc0.0 /mnt

Now you can see the files:

# ls /mntMLO am335x-boneblack.dtb barebox.binu-boot.img uRamdisk zImage

Boot from the root partition:

# global.bootm.oftree=/mnt/am335x-boneblack.dtb# global linux.bootargs.root="root=/dev/mmcblk0p2 rootwait"# bootm /mnt/zImage