On 9/30/07, David Gibson <[EMAIL PROTECTED]> wrote: > On Fri, Sep 28, 2007 at 06:53:28PM +0200, Segher Boessenkool wrote: > > >> I'd be following this more closely if compiling a device tree didn't > > >> currently > > >> require an external utility (dtc or some such) that doesn't come with > > >> the > > >> Linux kernel. No other target platform I've built kernels for > > >> requires such > > >> an environmental dependency. > > > > > > No? You haven't built kernels for other platforms that have external > > > dependencies such as perl, gcc, make, binutils, etc.? :) > > > > Two of the supported Linux archs cannot be built with a mainline > > compiler, even! > > > > And I have to install GNU sed/awk to get builds to work, too. > > > > OTOH, it would be nice if we didn't need DTC -- it itself doesn't > > build out-of-the-box on all systems, either ;-) > > > > >> (This is a problem both for hardwiring the > > >> device tree into the kernel and for building a new boot rom from the > > >> linux > > >> kernel's ppc boot wrapper that would contain such a device tree to > > >> feed to > > >> the kernel.) > > > > > > It's only really been a problem for ps3 so far, since the embedded > > > guys don't seem to have any difficulty with installing dtc. We are > > > looking at what to do for ps3 and prep, and the answer may well > > > involve bundling dtc in the kernel source (it's not too big, around > > > 3400 lines). > > > > If only a few platforms have this problem, we could instead include > > their .dtb files in the kernel source tree. > > Including .dtbs in the kernel tree has a big practical problem: > they're binary, so can't be patch(1)ed, which makes updating them a > complete PITA. > > I'm working on merging dtc into the kernel tree instead.
I'm kind of late to this party; but I have to say I disagree. Most of us are doing just fine installing the dtc tool (and mkimage tool for that matter). Cloning it in the kernel tree is just asking for divergence. Cheers, g. -- Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd. [EMAIL PROTECTED] (403) 399-0195 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
