On Thu, 2014-05-22 at 20:52 +0800, Andy Green wrote: > On 22 May 2014 17:50, Ian Campbell <[email protected]> wrote: > > On Wed, 2014-05-21 at 14:39 +0300, Riku Voipio wrote: > >> > >> Hi, > >> > >> I've collected a list of where people install their dtb files these > >> days; > >> > >> https://wiki.linaro.org/Platform/DeviceTreeConsolidation > >> > >> > >> Every distribution has a slightly different variation of install > >> location, which is not good - we can't tell end users that "this is > >> the place you can expect to find your device tree files regardless of > >> what distribution you choose". Some questions I have here before we > >> proceed discussing what would be the standardized location: > >> > >> > >> 1) Anything missing of the pros and cons of different locations? > > > > FWIW Debian will now arrange for the correct DTB for the platform to be > > installed as /boot/dtb-$(uname -r) as well as the /usr/lib location. > ... > > I'm more or less ambivalent about installing all of the possible DTB > > files in a similar location though. I'm not sure what the use case for > > that is. Wouldn't you also need to standardise on the dtb filename for > > each platform and effectively make that ABI? > > For installs on eg, an SD Card, there's nothing stopping the one SD > Card being usable on multiple different SoC platforms if the > bootloader will allow it.
> For example Fujitsu have various SoC with bootloader in HSSPI NOR, > which knows the right dtb filename for that SoC. > > So if all the dtbs are in /boot/whatever, that same SD Card is capable > to boot on any of them, since they're all supported by the same single > kernel binary from the same SD Card, and the bootloader picked out the > right one for what it happens to be running on. It's very convenient. But such an sd card would only work on these Fujitsu SoCs, wouldn't it? In which case a single boot.scr could equally well handle it. Or is there a separate effort to standardise uboot bootcmd settings as well? > From that point of view, there isn't really a "correct DTB for the > platform" because the platform it got installed on may not be the only > one it's capable and wanting to boot. > > -Andy > > > Ian. > > > > > > > > _______________________________________________ > > cross-distro mailing list > > [email protected] > > http://lists.linaro.org/mailman/listinfo/cross-distro > _______________________________________________ cross-distro mailing list [email protected] http://lists.linaro.org/mailman/listinfo/cross-distro
