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| author |   takeshi_hoshina <takeshi_hoshina@mail.toyota.co.jp> | 2020-10-22 14:58:56 +0900 |
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| committer | takeshi_hoshina <takeshi_hoshina@mail.toyota.co.jp> | 2020-10-22 14:58:56 +0900 |
| commit | 4204309872da5cb401cbb2729d9e2d4869a87f42 (patch) | |
| tree | c7415e8600205e40ff7e91e8e5f4c411f30329f2 /external/meta-updater-raspberrypi/README.md | |
| parent | 5b80bfd7bffd4c20d80b7c70a7130529e9a755dd (diff) | |
agl-basesystem 0.1sandbox/ToshikazuOhiwa/master
Diffstat (limited to 'external/meta-updater-raspberrypi/README.md')
| -rw-r--r-- | external/meta-updater-raspberrypi/README.md | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/external/meta-updater-raspberrypi/README.md b/external/meta-updater-raspberrypi/README.md index 3623a212..29ea2989 100644 --- a/external/meta-updater-raspberrypi/README.md +++ b/external/meta-updater-raspberrypi/README.md @@ -1,7 +1,25 @@ -# BSP layer for updating Raspberrypi with OSTree +# BSP layer for updating Raspberry Pi with OSTree -* OSTree bootloader integration for Raspberry Pi. Add it to BBLAYERS when using [meta-updater](https://github.com/advancedtelematic/meta-updater) with [Raspberry Pi](https://github.com/agherzan/meta-raspberrypi). -* Wi-Fi enablement for Raspberry Pi +OSTree bootloader integration for Raspberry Pi. Add it to BBLAYERS when using [meta-updater](https://github.com/advancedtelematic/meta-updater) with [Raspberry Pi](https://github.com/agherzan/meta-raspberrypi). + +For more documentation on using this layer and [HERE OTA Connect](https://connect.ota.here.com/), please see the [OTA Connect documentation portal](https://docs.ota.here.com/), in particular the guide on [building a Raspberry Pi image](https://docs.ota.here.com/ota-client/latest/build-raspberry.html). + +## Device tree configuration + +The Raspberry Pi firmware allows customization of the device tree with special entries in `/boot/config.txt`: +<https://www.raspberrypi.org/documentation/configuration/device-tree.md>. + +This is not supported in this form when using meta-updater, as the device tree and eventual overlays are managed separately via u-boot and ostree. + +Thus, you will have to make the necessary changes directly in yocto and either: + +- patch the kernel sources to modify source dts +- patch the kernel sources to add overlay sources and add the corresponding binaries in `KERNEL_DEVICETREE` +- use a customized complete dtb and declare it with `EXTERNAL_KERNEL_DEVICETREE` + +You can see examples of the first two approaches in [the linux-raspberrypi bbappend](recipes-kernel/linux/linux-raspberrypi_%.bbappend). + +## Wi-Fi enablement for Raspberry Pi | Name | Default | Description | |---|---|---| |