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Diffstat (limited to 'docs/zephyr_shim.md')
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diff --git a/docs/zephyr_shim.md b/docs/zephyr_shim.md index c33a983a4a..019ad1013d 100644 --- a/docs/zephyr_shim.md +++ b/docs/zephyr_shim.md @@ -326,6 +326,48 @@ Zephyr's build system (including shimmed code) uses CMake instead of `Makefiles`, and your code will not be compiled for Zephyr unless you list the files in `zephyr/CMakeLists.txt`. +## Step-by-step guide to adding a Kconfig + +Follow these steps: + +1. Make sure you have read the above Configuration section + +2. Add your config to one of zephyr/Kconfig* files. Note the PLATFORM_EC_ prefix + and try to put it near related things: + + ```kconfig + config PLATFORM_EC_CHARGER_BQ25720 + bool "TI BQ25720 charger" + help + The TI BQ25720 is a blah blah (describe summary from datasheet, + at least 3 lines so take 10 minutes to write something truly useful) + ``` + + Consider a `depends on PLATFORM_EC_...` line if it depends on an existing + feature. + +3. Add to zephyr/shim/include/config_chip.h (put it at the bottom): + + ```kconfig + #undef CONFIG_CHARGER_BQ25720 + #ifdef CONFIG_PLATFORM_EC_CHARGER_BQ25720 + #define CONFIG_CHARGER_BQ25720 + #endif + ``` + +4. Add the source file to zephyr/CMakeLists.txt if it is not already there. For + ordering check the comments in that file: + + `zephyr_sources_ifdef(CONFIG_PLATFORM_EC_CHARGER_BQ25720 + "${PLATFORM_EC}/driver/charger/bq25720.c")` + +5. Run a build on a board that enables the new CONFIG (in config.h) to make sure + there are no problems. + +6. If it doesn't work, please email zephyr-task-force@ or file a bug and assign + it to sjg@, cc zephyr-task-force@ (please include CL link and the error + output). + ## Unit Tests Unit tests, implemented using the Ztest framework, can be found in |