On Tue, Jan 28, 2014 at 03:23:23PM +0100, Michal Simek wrote: > Hi guys, > > I do play a little bit with u-boot spl and I am curious > about fat32 implementation. There is MAX_CLUSTSIZE which is 65k > and there are 3 buffers in fat.c code > do_fat_read_at_block > get_contents_vfatname_block > get_dentfromdir_block > > All these 3 are placed to bss section. > I have just 192k of memory for SPL that's why I tried 2 things > 1. Place these 3 fat arrays to different memory which is working fine > 2. Decrease MAX_CLUSTSIZE to any low value (I do use 8k). > > Unfortunately if I decrease MAX_CLUSTSIZE and add them to bss section > SPL doesn't work. If I add them to a different section in front of > or behind bss everything is just fine. > > That's why I have a question where can be the problem in this behaviour > that keeping 8k MAX_CLUSTSIZE in bss section doesn't work > and keeping 8k MAX_CLUSTSIZE out of bss section works. > > bss relocation is not done in SPL.
To be clear, are you saying you cannot do this in your case? We support CONFIG_SPL_BSS_START_ADDR / CONFIG_SPL_BSS_MAX_SIZE which is how on TI platforms for example we put BSS into DDR, as we've configured that before needing BSS. -- Tom
signature.asc
Description: Digital signature
_______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
