[U-Boot] [RFC] arm926ejs: fix jump to RAM nand_boot

Sughosh Ganu
2010-11-02T11:32:55Z

On Tue Nov 02, 2010 at 12:16:55PM +0100, Albert ARIBAUD wrote:
> Le 02/11/2010 10:56, Sughosh Ganu a ?crit :
>> hi Albert,
>>
>> On Tue Nov 02, 2010 at 10:47:49AM +0100, Albert ARIBAUD wrote:
>>
>>> Now a solution would be that the actual u-boot size be flashed along
>>> with it, for instance as a literal defined as '.word _end - _start'
>>> right after the vectors. The SPL could load a first NAND block, read the
>>> literal, round it to a multiple of NAND blocks by default, and then read
>>> this quantity.
>>>
>>> That would remove the dependency at the cost of extra code in the SPL,
>>> though, and not all boards might be able to afford it.
>>
>> Another issue is that the nand_spl might be compiled and flashed
>> to the NAND as a separate entity, using a separate flashing
>> mechanism. If we use the dynamic calculation of the u-boot size,
>> this would necessitate building and flashing the nand_spl each time
>> along with u-boot.
>
> Not with the solution I describe, as the once-flashed SPL would fetch
> the actual size from the actual u-boot.

Yes that is correct. I was referring to the other solution of fixing
the size through the script.

-sughosh