[U-Boot] [PATCH V2] nand_spl_simple: store ecc data on the stack

Stefano Babic
2011-12-13T17:31:50Z

On 13/12/2011 16:58, Tom Rini wrote:
> On Tue, Dec 13, 2011 at 4:30 AM, Stefano Babic <sbabic@denx.de> wrote:
>> Currently nand_spl_simple puts it's temp data at 0x10000 offset in SDRAM
>> which is likely to contain already loaded data.
>> The patch saves the oob data and the ecc on the stack replacing
>> the fixed address in RAM.
>
> OK, I think we need some convenience defines in nand_spl_simple.c:
>
>> + u_char ecc_calc[CONFIG_SYS_NAND_ECCSTEPS * CONFIG_SYS_NAND_ECCBYTES];
>
> This is long and used in a lot of places. Furthermore...
>
>> #define CONFIG_SYS_NAND_ECCSTEPS (CONFIG_SYS_NAND_PAGE_SIZE / \
>> CONFIG_SYS_NAND_ECCSIZE)
>
> Is what everyone does.

Right, I've missed this one - we can then drop CONFIG_SYS_NAND_ECCSTEPS
also from configuration files.

> So if we replace ECCSTEPS with
> (PAGE_SIZE/ECCSIZE) it gets eve longer. We should probably #define
> SYS_NAND_ECCSTEPS, SYS_NAND_ECCTOTAL up top and go with it.

I'll do in V3.

Regards,
Stefano

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