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:
- 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.
WRT the use of `uname -r` and DTB as stable ABI, might it be sensible to declare a search path type arrangement? i.e. try /path/with-uname-r/dtb then /path/dtb ? For example people might consider packaging https://git.kernel.org/cgit/linux/kernel/git/devicetree/devicetree-rebasing.... which doesn't have a uname in it.
- Are you interested in moving to a standardized location if
cross-distro list proposes one?
Installing the dtb for the current platform into some known location easily accessed from bootloaders seems reasonable enough.
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?
Ian.