[U-Boot] BSS footprint of FAT very high - SPL issues

[Bedia, Vaibhav]

Hi Aneesh,

On Tuesday, February 01, 2011 10:54 AM, Aneesh V wrote:
> Dear Wolfgang,
> 
> I had been working on creating an MMC SPL for OMAP4. OMAP boards
> typically support booting from the FAT partition of a removable
> SD/MMC card. So, we need to have FAT support in the SPL. But I am
> having some difficulties in adding FAT support to SPL.   
> 
> BSS footprint of fat.c is very high. It has three buffers each of
> size 64KB. To workaround this problem I have done something like
> below(The way x-loader works around this problem today).  
> CONFIG_SYS_SPL_FAT_BUFFER_BASE is in SDRAM.Is this ok?
> 
[...]

I guess you will hit a similar issue with the networking related code is used (I am not sure if SPL uses it). That also requires a decent size of bss.

Is having a config option to specify the location of bss (like CONFIG_SYS_BSS_ADDR) better/acceptable?

Regards,
Vaibhav