[U-Boot] [PATCH v3 4/8] imx6: add some flexibility for defining macros

[Stefano Babic <sbabic@denx.de>]

Hi John,

On 10/11/2014 00:53, John Tobias wrote:

>>> @@ -29,7 +29,9 @@
>>>  #define CONFIG_SPL_TEXT_BASE         0x00908000
>>>  #define CONFIG_SPL_MAX_SIZE          0x10000
>>>  #define CONFIG_SPL_START_S_PATH              "arch/arm/cpu/armv7"
>>> +#ifndef CONFIG_SPL_STACK
>>>  #define CONFIG_SPL_STACK             0x0091FFB8
>>> +#endif
>>
>> Why is this required ?
> 
> Other iMX6 chip has different STACK address and the current defined
> address does not
> compatibile for the iMX6 SabreSD.

This is exactly what I have not understood. Why is this board so special
to require a different value ? SPL will run into the IRAM, whose size
and layout is the same for i.MX6Q. Is there a reserved area in the IRAM
only for sabreSD and if yes, for which reason ?

Best regards,
Stefano Babic

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