[U-Boot] [PATCH 1/2] mx51evk: support new relocation scheme

Heiko Schocher hs at denx.de
Tue Oct 26 10:25:22 CEST 2010


Hello Stefano,

Stefano Babic wrote:
> On 10/26/2010 10:05 AM, Shawn Guo wrote:
>> Hi Stefano,
>>
>> On Tue, Oct 26, 2010 at 3:59 PM, Stefano Babic <sbabic at denx.de> wrote:
>>> On 10/25/2010 05:14 PM, Shawn Guo wrote:
>>>
>>>> +#define CONFIG_SYS_SDRAM_BASE        PHYS_SDRAM_1
>>>> +#define CONFIG_SYS_INIT_SP_ADDR      (IRAM_BASE_ADDR + 0x1000)
>>> What is the meaning of the offset at 0x1000 ? Is there something at
>>> IRAM_BASE_ADDR ?
>>>
>> I thought CONFIG_SYS_INIT_SP_ADDR is assigned to stack pointer (sp)
>> which decrease the address.  Is it not the case?
>>
> 
> Yes, my doubt is due to the fact that we do not set the SP at the end of
> the IRAM and we set it to an arbitrary address in between.

We should set the CONFIG_SYS_INIT_SP_ADDR @ (IRAM_BASE_ADDR + IRAM_BASE_SIZE
- CONFIG_SYS_GBL_DATA_SIZE)

Don;t know if IRAM_BASE_SIZE exists ...

bye,
Heiko
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