[U-Boot] [PATCH v4 0/6] Enable Thumb build for ARM platforms

[Tom Rini]

On Fri, Mar 16, 2012 at 12:48 AM, Sricharan R <r.sricharan at ti.com> wrote:
> Tom,
> <snip..>
>
>> > > > Is an #error in a common omap4/5 file sufficient or does it need
>> to be
>> > > > sooner than that?
>> > >
>> > > If it can be tested there, it can probably also tested before we
>> start
>> > > building at all?
>> >
>> > I suspect no just because the kernel does this in
>> > <linux/compiler-gcc[45].h>
>>
>> I take it back, we can do that if we bring in the archprepare rule
>> logic
>> that the kernel has.  I'll go down this path now...
>>
>  Today though out of 40KB of non secure SRAM on OMAP4
>  we cannot use more than 32KB of SRAM in EMU devices
>  because of romcode restrictions.

Ah, I forgot about the romcode.  But other devices allow for more yes
(since the currently enforced limit is 38kB) ?

>  OMAP5 is not a problem where we have sufficient
>  Non SECURE SRAM.
>
>  Just to understand, are we now required to
>  introduce #error macro in OMAP4 to get this through ?

No, I just need to post the patches I have that introduce a gcc
version check prior to building.  It's lifted in part from the kernel,
but our Makefiles are too different for the kernel way to just work :(

-- 
Tom