On Tuesday, February 01, 2011 1:48 PM, Aneesh V wrote: > Dear Wolfgang, > > On Tuesday 01 February 2011 01:25 PM, Wolfgang Denk wrote: >> Dear Aneesh V, >> >> In message<4d4798e2.3050...@ti.com> you wrote: >>> >>> 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? >> >> Why would that be necessary? Just put the BSS segment in SDRAM, >> and everything is fine, isn't it? > > SDRAM is initialized by the SPL. So, bss can not be initialized and > used until SDRAM initialization is complete. I would prefer to have > rest of the bss in internal RAM so that it's available as soon as > we enter C code. >
This approach looks very messy to me. I would rather revisit the init sequence to see if things can be fixed there. Regards, Vaibhav _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
