Hi, for the past few days I've been looking into updating the XO-1.75 OpenFirmware so that it's good enough to boot mainline Linux.
It now looks usable enough: the essentials such as simple framebuffer, keyboard, Wi-Fi or USB all seem to work. The branch's pretty large; counting 60 commits at the moment. Get it from: git pull https://github.com/lkundrak/openfirmware lr/olpc-xo175-1 It's not done or finished (see the TODOs in many commits). Some bindings are not settled in Linux tree. Howerver I still think it may be a good idea to share it early to get some feedback and identify bits that obviously stink. I've tested it with the latest Fedora kernel [1] build (yay!) and also booted the latest OLPC OS release. When booting the latter, there were no differencies in "find /sys/devices -type d |sort" output, so I assume the drivers that would use the device tree (there probably aren't many) bind just fine. [1] https://koji.fedoraproject.org/koji/buildinfo?buildID=1214041 I tried not to break other boards. olpc/4.0 still builds fine, but is likely to end up with three clock nodes (/pmua, /apbc and /clocks). olpc/3.0 was bitrotten before and I did not try doing x86 build, for the most part I've been building natively on the XO-1.75. For a x86_64 hosted build I needed to patch cforth. See [2]. The MitchBradley/cforth [1] master branch actually takes a similar approach, but there the 1.75 support there seems severely bitrotten. [2] https://github.com/lkundrak/cforth/commit/c88790fd32.patch [3] https://github.com/MitchBradley/cforth I didn't have the guts to actually flash and run the image built on x86_64. I don't not seem to be able to program the spi flash by attaching a soic8 clip to it, without unsoldering the chip and I don't feel like doing that if I fuck things up. At some point I'll hopefully follow up with something that could be actually merged into the OpenFirmware, perhaps in a month or so. Until then some more bindings may settle. In particular, my hopes are that some of Armada DRM or EC may make it into 5.1. Camera works, but needs some more love, perhaps 5.2. Take care Lubo _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
