[U-Boot] RFC: Aligning arch initialisation sequences

Reinhard Meyer u-boot at emk-elektronik.de
Sat Nov 13 23:48:27 CET 2010


Dear Wolfgang Denk,
> Dear Reinhard Meyer,
>
> In message<4CDF137E.2000902 at emk-elektronik.de>  you wrote:
>>
>>> This has but on tiny shortcoming: we use GD to pass data around, for
>>> example to pass clock frequencies determind before relocation to the
>>> code running after relocation - which means that GD must be of a
>>> statically allocated storage class.
>>>
>>> Your stack variable above will go out of scope as soon as we leave the
>>> board_early_init() function...
>>
>> Correct, that's why its even now copied over to storage in SDRAM...
>> (at least on ARM:
>> 	debug ("relocation Offset is: %08lx\n", gd->reloc_off);
>> 	memcpy (id, (void *)gd, sizeof (gd_t));
>>
>> 	relocate_code (addr_sp, id, addr);
>> )
>
> At this time board_early_init_f() has terminated long ago, i. e. the
> data is not available any more.

Above code is *IN* board_early_init_f !

Best regards,
Reinhard


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