On Thu, Oct 04, 2007 at 06:58:49PM -0700, Mark A. Greer wrote: > Having the link address jump around depending on the size of the kernel > or zImage is wrong IMHO. It just screams "weird can't boot issues." > We need a way to specify exactly where we want the zImage linked no > matter what the kernel or zImage size.
Why? The zImage is relocatable. It doesn't matter where it's linked. > Also, being able to control the link address (that is, the download > address with some firmwares) is not a u-boot specific issue and we > shouldn't make a u-boot specific solution. How is this a u-boot specific solution? > The more general problem is that some firmwares examine the ELF header > and download the zImage to address it was linked at. Some firmwares let > you override this but some don't and those are the problem ones. That's not the more general problem; it's the same problem with a different file format. > I still like my idea best. I haven't coded yet it so I don't have a patch > but this is what I mean: > > 1) add a config option (default 4MB) for the link address > 2) add a parameter to the wrapper script thru which we pass the value in > the config option > 3) the wrapper script changes the VMA/LMA to the address specified > (objcopy --change-addresses=<some math to get correct incr> ?). I'd much rather it be automatic than require the user to guess an appropriate value (and be aware in the first place that it needs to be set). -Scott _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
