El Fri, Mar 05, 2010 at 07:09:11AM -0500 Rishi Dhupar ha dit:
> Strange question but I am using an OMAP 3530 and the boot process currently
> is from TI's X-Loader to U-Boot to Linux.
>
> What I want is to have two different versions of U-Boot, an extremely
> optimized and small one (to reduce boot time) but then also a debug version
> that has a built in device test suite and allows updating of the Linux
> kernel.
>
> The optimized version would boot first and then check if a GPIO is set, if
> so then it would boot into the debug U-Boot to perform tests or software
> updates.
>
> Anyone do anything like this or is it even possible?
i think it should be possible, but i wonder if you really need
this. do you have hard data that suggest that the test suite or
allowing to update the linux slows down U-Boot significantly?
in my environment i use scripts stored in environment variables to
update the kernel and the rootfs, afaik this doesn't add any overhead
at all.
the test suite you mentioned might be a different issue depending on
its size, as it has to be copied from flash to RAM at boot time. if
it's just adds a few kB i think it shouldn't be relevant, especially
on your high-profile system
best regards
--
Matthias Kaehlcke
Embedded Linux Developer
Barcelona
There is no passion to be found playing small - in settling
for a life that is less than the one you are capable of living
(Nelson Mandela)
.''`.
using free software / Debian GNU/Linux | http://debian.org : :' :
`. `'`
gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `-
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