Cannot boot joyride-2200 from USB stick

[Deepak Saxena]

On Jul 26 2008, at 21:44, Ton van Overbeek was caught saying:
> Deepak Saxena wrote:
> >Sigh++ Bought a 1G microSD with a usb adapter and it happens to be one
> >that OpenFirmware cannot talk to so I can't boot off it. Just wanted
> >to give you an update that this is still on my plate, just seems to be
> >hitting every roadblock in the way of solving it. :O
> >
> >~Deepak
> >  
> One more data point.
> After some initial peeking in the ramdisk, I copied the 2212 ext3 image 
> to a SD card,
> inserted it in the XO and tried to boot from it.
> That works !!!
> Of course, no activities since /home/olpc is also on the SD card and the 
> jffs does not get mounted.
> So it seems USB is the problem. There is one warning message early in 
> the boot at approximately
> 2 seconds about using an obsolete function in the sd driver, to use 
> bus-methods instead.
> I am writing from memory, so this is not exact. Could this have 
> something to do with it, since the
> sd driver is needed for USB?

USB needs sd_mod which is still built into the kernel. Issue ended up being
that we need to load ohci-hcd, not ehci-scd. Working ramdisk @:

http://dev.laptop.org/~dsaxena/olpcrd-2200-fixup.img

~Deepak

-- 
Deepak Saxena - Kernel Developer - dsaxena at laptop.org