Does cmdline.txt supports root=UUID= ?

[retux]

I'm trying to use root fs in an usb stick. Using root=/dev/sda1 in cmdline.txt everything just works.
But I'd like to use UUID: root=UUID=... that didn't work for me.

UUID identification should be supported by firmware or is this a kernel issue?

Thanks

[cleverca22]

i believe that's purely a kernel issue

https://github.com/raspberrypi/linux/blob/rpi-3.6.y/init/do_mounts.c#L97

[retux]

You were completely right. I've build the kernel including these config options and I been able to use initrd:

CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""

It would be very nice if stock kernel for raspbian includes these feature. How could we ask for that? Cos' it's just an option and is very useful.
Thanks!

[lurch]

Just to keep the threads connected: raspberrypi/linux#392

[popcornmix]

Latest rpi-update firmware:

$ uname -a
Linux raspberrypi 3.10.18+ #577 Tue Nov 5 12:33:36 GMT 2013 armv6l GNU/Linux
$ zcat /proc/config.gz |grep INIT
CONFIG_BLK_DEV_INITRD=y
CONFIG_INITRAMFS_SOURCE=""