Hi Will, On Mon, Mar 12, 2012 at 3:13 PM, Will Khan <[email protected]> wrote: > Hi all. > > I'm trying to upgrade my u-boot from 16 May 2009 release (out of tree > customized version) to the release version December 2011. This is for > powerpc MPC8349. > I feel I’m very close to having U-boot successfully built, but I’m getting a > symbol error at the end of the final link: > > arch/powerpc/cpu/mpc83xx/start.o:(.got2+0x8): undefined reference to > `__bss_end__' > arch/powerpc/lib/libpowerpc.o:(.got2+0x54): undefined reference to > `__bss_end__' > > I googled around and saw (perhaps unrelated) that in some cases, the symbol > `__bss_end__' may not be defined. So, in /arch/powerpc/mpc83xx/Start.s and > arch/powerpc/lib/board.c, I manually changed `__bss_end__' to `_end'. > However, I now get the following error: > > arch/powerpc/cpu/mpc83xx/start.o:(.got2+0x8): undefined reference to `_end' > arch/powerpc/lib/libpowerpc.o:(.got2+0x54): undefined reference to `_end' > > So, my question is, is my problem a basic definition of these symbols, and if > so, how to define `__bss_end__' or ‘_end’? (and where is the best place to > put the definition)?
Well, _bss_end__ should be defined in the link script - which might be arch/powerpc/cpu/*/u-boot.lds. But if you have a special link script for your board then you might need to adjust it. In some places this symbol is called __bss_end. But _end is a different symbol, so you shouldn't change one into the other. Regards, Simon > > Thanks in advance, > Will > > _______________________________________________ > U-Boot mailing list > [email protected] > http://lists.denx.de/mailman/listinfo/u-boot > _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
