On Tue, Sep 23, 2014 at 09:01:46PM +0100, Ian Campbell wrote: > It appears not :-/ > Thinking about it some more we don't really need this for the sort of > default boot script I was thinking about, just a dtb -> dtb-$uname > symlink to match the vmlinuz/initrd.img ones is sufficient given the > ability to supply our own boot.scr, and flash kernel can arrange that > regardless of the packaged location. > I notice that the Debian powerpc packages use the same /usr/lib path as > the arm ones, I don't have the knowledge to go messing around with that, > which makes me inclined to leave ARM alone too rather than diverge > across the arches. > > The linked wiki page still lists a set of options. > FWIW this new u-boot stuff include $fdtfile which is the file name, but > I don't think it includes (or cares about) the path to it. > > At the time of that thread, I recall that the proposed standardization of > > dtb locations was mostly not useful for the platforms I cared about because > > they were going to be placed in locations that wouldn't help u-boot find > > them in order to pass them to the kernel. > Anywhere under /boot would do, wouldn't it? Debian and Ubuntu seem to be > the main ones which use /usr or /lib. Anywhere under /boot, provided that u-boot can find it. The linaro proposal was for distribution packages to /ship/ the dtb files under /boot; that doesn't help u-boot if they're also going to be qualified by uname, without additional glue code for your boot.scr; and if you have to have additional glue code, why put it in boot.scr instead of in flash-kernel? One possible answer to this question is: so that flash-kernel doesn't have to iterate over all of the dtbs for the current kernel and copy them around. But I think we're even farther from having any kind of standard boot.scr/uEnv.txt infrastructure that would cope with this, than we are from having dtbs themselves as a standard interface. -- Steve Langasek Give me a lever long enough and a Free OS Debian Developer to set it on, and I can move the world. Ubuntu Developer http://www.debian.org/ slangasek@ubuntu.com vorlon@debian.org
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