[U-Boot] [PATCH] SPL: do not use fix value for u-boot size

[Stefan Roese <stefan.roese@gmail.com>]

Hi Stefano,

On 08/23/2012 11:23 AM, Stefano Babic wrote:
>>> diff --git a/common/spl/spl.c b/common/spl/spl.c
>>> index 7d15460..827ff1c 100644
>>> --- a/common/spl/spl.c
>>> +++ b/common/spl/spl.c
>>> @@ -100,7 +100,11 @@ void spl_parse_image_header(const struct image_header *header)
>>>  		debug("mkimage signature not found - ih_magic = %x\n",
>>>  			header->ih_magic);
>>>  		/* Let's assume U-Boot will not be more than 200 KB */
>>> +#ifdef CONFIG_SYS_MONITOR_LEN
>>> +		spl_image.size = CONFIG_SYS_MONITOR_LEN;
>>> +#else
>>>  		spl_image.size = 200 * 1024;
>>> +#endif
>>
>> Yes, I noticed this 200 KiB setting as well. But it seems that this
>> ".size" variable is not referenced at all. Or am I missing something?
> 
> Your are missing something:
> 
> drivers/mmc/spl_mmc.c:
> 
> 55         /* convert size to sectors - round up */
>  56         image_size_sectors = (spl_image.size + MMCSD_SECTOR_SIZE - 1) /
>  57                                 MMCSD_SECTOR_SIZE;
> 
> And I have an example where only a part of u-boot is copied.

Ahh, I see. Thanks.

I would prefer the following approach then, to move the #ifdef out of
the C code:

#ifndef CONFIG_SYS_MONITOR_LEN
#define CONFIG_SYS_MONITOR_LEN	(200 * 1024)
#endif

and then use CONFIG_SYS_MONITOR_LEN unconditionally.

Thanks,
Stefan