[microblaze-uclinux] RE: CONFIG_OPT_LIB_FUNCTION crashes kernel without a barrel shifter

[John Linn <John.Linn@xxxxxxxxxx>]

> -----Original Message-----
> From: John Linn
> Sent: Friday, October 23, 2009 1:01 PM
> To: microblaze-uclinux@xxxxxxxxxxxxxx
> Subject: CONFIG_OPT_LIB_FUNCTION crashes kernel without a barrel
shifter
> 
> On an MMU kernel, I see that when this feature is enabled in the
kernel config, and there is no
> barrel shifter in h/w, the kernel won't boot.
> 
> I believe the lack of barrel shifter is the cause, but not 100%
confident.

It looks like you have to have both of these for the failure to boot.

CONFIG_OPT_LIB_FUNCTION=y
CONFIG_OPT_LIB_ASM=y

> 
> The help in the kernel config indicates it might be sub-optimal, but
not crashing.  The mmu_defconfig
> uses this option.
> 
> Thanks,
> John

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