[U-Boot] [PATCH] armv7: only call save_boot_params for OMAP

[Aneesh V <aneesh@ti.com>]

Hi Simon,

On Monday 19 September 2011 01:32 PM, Simon Schwarz wrote:
> Hi Aneesh,
> 
> I did this Patch because of an error with an SPL build of smdkv310.
> 
> This board doesn't even build with the normal configuration but the SPL
> patches add more errors (I did some BUILDALL testing).
> 
> So the question: Should we care for an already broken board or just
> leave the matter to the poor guy who will, in some distant future, fix
> the other problems of this board?
> 

I think we need to fix this issue anyway. There may be new SPLs that do
not care about saving boot parameters. I can fix this in my next
series.

regards,
Aneesh


> Regards
> Simon
> 
> 
> On 09/16/2011 06:13 PM, Aneesh V wrote:
>> Hi Simon,
>>
>> On Friday 16 September 2011 09:02 PM, Simon Schwarz wrote:
>>> save_boot_params in start.S got called for all armv7 based cpus.
>>> Since the
>>> function relys on the OMAP specific bootloader this broke some boards
>>> (or to be specific added more errors to already broken ones). This patch
>>> wraps the call in #ifdef CONFIG_OMAP.
>>
>> There is a weakly linked default function implemented in armv7/cpu.c.
>> So, there should not be any build break for u-boot builds.
>>
>> However armv7/cpu.c is not included in an SPL build, so may cause
>> trouble for SPL build of non-OMAP boards. The solution for this problem
>> is the following:
>>
>> --- a/arch/arm/cpu/armv7/Makefile
>> +++ b/arch/arm/cpu/armv7/Makefile
>> @@ -29,9 +29,9 @@ START := start.o
>>
>>   ifndef CONFIG_SPL_BUILD
>>   COBJS  += cache_v7.o
>> -COBJS  += cpu.o
>>   endif
>>
>> +COBJS  += cpu.o
>>   COBJS  += syslib.o
>>
>>   SRCS   := $(START:.o=.S) $(COBJS:.o=.c)
>>
>> Let me know if I am missing something.
>>
>> best regards,
>> Aneesh
>>
>>
>>>
>>> Signed-off-by: Simon Schwarz<simonschwarzcor@gmail.com>
>>> ---
>>>   arch/arm/cpu/armv7/start.S |    2 ++
>>>   1 files changed, 2 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
>>> index db8e9d2..7cb380c 100644
>>> --- a/arch/arm/cpu/armv7/start.S
>>> +++ b/arch/arm/cpu/armv7/start.S
>>> @@ -134,7 +134,9 @@ IRQ_STACK_START_IN:
>>>    */
>>>
>>>   reset:
>>> +#ifdef CONFIG_OMAP
>>>       bl    save_boot_params
>>> +#endif
>>>       /*
>>>        * set the cpu to SVC32 mode
>>>        */
>