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ChibiOS Upgrade Procedure

ChibiOS and ChibiOS-Contrib need to be updated in tandem -- the latter has a branch tied to the ChibiOS version in use and should not be mixed with different versions.

Getting ChibiOS

svn Initialization:
- Only needed to be done once
- You might need to separately install git-svn package in your OS's package manager
- git svn init --stdlayout --prefix='svn/' http://svn.osdn.net/svnroot/chibios/
- git remote add qmk git@github.com:qmk/ChibiOS.git
Updating:
- git svn fetch
- First time around this will take several hours
- Subsequent updates will be incremental only
Tagging example (work out which version first!):
- git tag -a ver20.3.4 -m ver20.3.4 svn/tags/ver20.3.4
- git push qmk ver20.3.4
- git tag -a develop_YYYY_qN -m develop_YYYY_qN svn/tags/ver20.3.4
- git push qmk develop_YYYY_qN

Getting ChibiOS-Contrib

git Initialization:
- git clone git@github.com:qmk/ChibiOS-Contrib
- git remote add upstream https://github.com/ChibiOS/ChibiOS-Contrib
- git checkout -b chibios-20.3.x upstream/chibios-20.3.x
Updating:
- git fetch --all --tags --prune
- git checkout chibios-20.3.x
- git pull --ff-only
- git push origin chibios-20.3.x
- git tag -a develop_YYYY_qN -m develop_YYYY_qN chibios-20.3.x
- git push origin develop_YYYY_qN

Updating submodules

Update the submodules
- cd $QMK_FIRMWARE
- git checkout develop
- git pull --ff-only
- git checkout -b chibios-version-bump
- cd lib/chibios
- git fetch --all --tags --prune
- git checkout develop_YYYY_qN
- cd ../chibios-contrib
- git fetch --all --tags --prune
- git checkout develop_YYYY_qN
Update ChibiOS configs within QMK
- cd $QMK_FIRMWARE
- ./util/chibios_conf_updater.sh
Build everything
- cd $QMK_FIRMWARE
- qmk mass-compile -j 4
- Make sure there are no errors
Push to the repo
- git commit -am 'Update ChibiOS to 99.9.9'
- git push --set-upstream origin chibios-version-bump
Make a PR to qmk_firmware with the new branch

When merging a PR containing an upgrade of ChibiOS/ChibiOS-Contrib:

Update the target branch if the merge target was master:
- git checkout qmk-master
- git reset --hard develop_YYYY_qN
- git push origin qmk-master --force-with-lease
Update the target branch if the merge target was develop:
- git checkout qmk-develop
- git reset --hard develop_YYYY_qN
- git push origin qmk-develop --force-with-lease

Note that when merging develop to master, the first workflow should still be followed.

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