10655 2016-11-14 23:05:56 +0000 Add support for Zephyr 2017-01-17 14:04:22 +0000 1 1 7 Build System, Metadata & Runtime Other YP Layers meta-zephyr 2.3 x86 Multiple RESOLVED FIXED High enhancement 2.3 M1 10656 10657 10658 10659 10660 10661 10662 1 juro.bystricky juro.bystricky jose.perez.carranza jair.de.jesus.gonzalez.plascencia --- --- Yes (doc changes required) oldest_to_newest 68297 0 juro.bystricky 2016-11-14 23:05:56 +0000 There is interest in the community to support building Zephyr images: https://www.zephyrproject.org/ in Yocto. Presently the only way (AFAIK) to build Zephyr images is based on command line/Kconfig, similar to building Linux kernel images. It should be possible/desirable to provide support to build Zephyr images via yocto/bitbake recipes. As a proof of concept, create a recipe to build a simple "Hello World" image: $ bitbake hello-world Probably the best way to implement this would be via a yocto supported layer "meta-zephyr". 68763 1 juro.bystricky 2016-12-01 00:37:39 +0000 The build should target Zephyr release 1.6, as this release is the first one with "unified" kernel (no separate micro and nano kernels anymore) 69017 2 juro.bystricky 2016-12-10 20:08:35 +0000 Pushed the initial commit here: http://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/log/?h=juro/meta-zephyr The layer works fine, builds and tests various Zephyr tests program. The layer also contains a recipe to build Zephyr "philosophers" sample. This sample is a bit more sophisticated than "hello world" sample. It is trivial to create "hello world" sample, I will probably add it at some point as well. It is also possible to run the samples in qemu. The meta-zephyr supports properly only x86 toolchains. Some work has been done to support ARM, but this needs a proper Cortex-M3 code generation. Presently, there is no tune for ARM in poky that supports Cortex-M3. 69018 3 juro.bystricky 2016-12-10 20:20:36 +0000 Also, in order to perform "testimage", you need these two patches: http://lists.openembedded.org/pipermail/openembedded-core/2016-December/129996.html http://lists.openembedded.org/pipermail/openembedded-core/2016-December/129997.html 69063 4 juro.bystricky 2016-12-12 22:20:10 +0000 Sent notice to the yocto mailing list: https://lists.yoctoproject.org/pipermail/yocto/2016-December/033521.html 69134 5 juro.bystricky 2016-12-14 18:36:49 +0000 I also managed to get the Cortex-M3 images to be build. 69494 6 juro.bystricky 2017-01-04 19:45:36 +0000 A new layer "meta-zephyr" implements the functionality (and more) as specified as the objective for this enhancement. There is a README file describing the usage as well. git@git.yoctoproject.org/meta-zephyr