On Fri, 2013-12-13 at 21:11 -0800, Aaron Williams wrote: > Hi all, > > I am working on trying to shrink down a bootloader for one of our chips > where the bootloader must fit in around 448K of memory and things are > fairly tight. I found that the oob data structures for 8, 16, 64 and 128 > bytes were taking up a fair amount of space. I had to increase the > eccpos size to 640 to match the Linux kernel since the existing size was > too small for some of the NAND devices we are working with.
This increase has already been done in top-of-tree U-Boot. Note that (again with top-of-tree) you can override with a lower limit to exactly match what your board requires. > This caused each oob data structure to consume around 2.5K in the binary. By > initializing the layout data structures at runtime I was able to > eliminate most of the space taken since now the linker can place these > in BSS. Yes, there's a lot of bloat in the NAND code -- both code and data -- that we could know at compile time is not going to get used for a particular target. Patches welcome. -Scott _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
