Hi Gilles, On Thursday 17 March 2011 06:13 PM, Gilles Chanteperdrix wrote: > > Hi, > > I would like to make some changes to u-boot on pandaboard. Sometimes in > the past, in u-boot, I could "loadb" a new u-boot binary, then "go" to > it, and the new version of u-boot would start. This was far from > perfect, but it made testing small changes possible. This also works > with the version of u-boot provided on the pandaboard community site. > > The magic which made this possible was in the "start.S" file, I see that > the code changed, but there still seems to be a relocation (somewhat > more complicated, since it handles ELF relocations), so it seems it > should work. > > So my question is: is this "loadb+go" method still supposed to be > working, and only broken, somehow, on pandaboard? Or is it no longer > supposed to be working?
Couple of things you might want to consider. * According to the new relocation scheme u-boot should start running from the address that it is linked to. You must load it to CONFIG_SYS_TEXT_BASE * Data cache enabled in U-Boot could be a problem. You will end up having cache coherency issues unless you flush the caches after loadb. Better keep them disabled using CONFIG_SYS_NO_DCACHE > > Regards. > _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
