Re: Pi2 bootcode.bin puzzle

druck <news@druck.org.uk> wrote:

It may still work on the Pi 2B, but being slower you may need to
increase the value of rootwait in cmdline.txt - particularly if it is a
spinning disc rather than an SSD - it could take 60 seconds before the
drive is readable.

I think the problem here is that start.elf, config.txt, the kernel and
cmdline.txt are all on the USB device - you can't put a timeout in
cmdline.txt because by that point you already need the USB device up to read
that file.

The alternative approach would be to have a regular bootcode.bin, start.elf,
kernel, etc on the SD card and then tell the kernel to find its rootfs on a
USB drive, at which point rootwait may help.  (I think Bob is using FreeBSD
but there is probably an equivalent option there).  Or to interpose u-boot
for the 'kernel' on the SD card, and then tell u-boot to find the kernel on
USB.

Theo