El Fri, 24 Jan 2014 10:20:16 -0700 Stephen Warren swarren@wwwdotorg.org escribió:
On 01/24/2014 09:15 AM, Tom Rini wrote:
On Thu, Jan 23, 2014 at 12:55:27PM -0700, Stephen Warren wrote:
From: Stephen Warren swarren@nvidia.com
People who write (or scripts that auto-generate) extlinux.conf don't want to know about HW-specific information such as FDT filenames. Create a new extlinux.conf tag "fdtdir" that specifies only the directory where FDT files are located, and defer all knowledge of the filename to U-Boot. The algorithm implemented is:
...
Signed-off-by: Stephen Warren swarren@nvidia.com
My only real concern is that http://www.freedesktop.org/wiki/Specifications/BootLoaderSpec/ is as best I can see the spec for extlinux.conf and it doesn't talk about this tag. So while it sounds like a good idea, if we implement it and it's not documented outside of U-Boot, will anyone use it?
Well, Dennis is actively working on making Fedora support extlinux.conf for at least ARM, and said on IRC that he was going to patch the Fedora generator to use it, so yes:-)
the tag is going to be added to the spec. we still have a little more work to do to fully support the spec. At the least version and machine-id tags and being able to dynamically find the .conf files. It is also safe to add additional tags as needed.
Dennis, should you or I simply edit that wiki, or is there some other process for changing it?
I spoke with Harald Hoyer just now and he said he would edit the spec
Related, I notice that it documents a "devicetree" tag, whereas U-Boot (prior to my patches) actually implements an "fdt" tag for the same purpose...
he also said 18:12 < haraldh> dgilmore, go with "fdt" and "fdtdir"
since u-boot has existing support out there for fdt for the same purpose.
Dennis