[U-Boot] [PATCH V9 2/4] omap-common: Add NAND SPL linux booting

[Stefano Babic]

On 07/12/2011 19:47, Wolfgang Denk wrote:
> Dear Simon Schwarz,
> 
> In message <4EDFA8FD.9000405 at gmail.com> you wrote:
>>
>>> So if the parse function fails, we should have the fallback to u-boot,
>>> exactly as we have now the fallback from u-boot.img to u-boot.bin.
>>>
>> Hm, I don't think that we want any fallback here. I would prefere an 
>> error message and hang. The direct boot is designed to be used in the 
>> field - so IMHO we don't want to start the bootloader automatically if a 
>> normal startup fails.
> 
> I feel it is better to start U-Boot and enable the user to analyze the
> situation instead of just hanging hard.
> 
> Just my 0.02#

Personally I think also that having a fallback is a good idea. I have in
mind a lot of boards that have not buttons or an available interface to
a simple GPIO, making any interaction impossible. If we have not a
fallback, we increase the risk for the end users to damage the boards if
for example the kernel is updated.

Apart a mechanism with a GPIO, can we think to use in a simple way the
console for this ? SPL supports it, and we could share the same
mechanism for all boards, in such way as we stop the autoboot in U-Boot.

Stefano

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