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author | Michael Tretter <m.tretter@pengutronix.de> | 2019-09-13 15:14:40 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2019-09-16 09:06:18 +0200 |
commit | da2c36c0a911992d80448f9afa5acc9d70871ed0 (patch) | |
tree | 6be756dc6c1a8c4cd5ef56d4281f1d5b0e083315 /Documentation | |
parent | bbd241efa5ae048cd7a96c5b232e729b9180e6f2 (diff) | |
download | barebox-da2c36c0a911992d80448f9afa5acc9d70871ed0.tar.gz barebox-da2c36c0a911992d80448f9afa5acc9d70871ed0.tar.xz |
blspec: add support for devicetree overlays
Read the devicetree-overlay property from the blspec entry and register
the overlays when booting the blspec entry.
Do not fail the boot if an overlay cannot be loaded, because if Linux
fails to boot without an overlay, the base device tree is broken.
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/user/booting-linux.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/user/booting-linux.rst b/Documentation/user/booting-linux.rst index 437f4e80ca..12cd505e71 100644 --- a/Documentation/user/booting-linux.rst +++ b/Documentation/user/booting-linux.rst @@ -232,6 +232,10 @@ device where the entry is found on. This makes it possible to use the same rootf image on different devices without having to specify a different root= option each time. +Additionally to the options defined in the original spec, Barebox has the +``devicetree-overlay`` option. This is a string value that refer to overlays +that will be applied to the device tree before passing it to Linux. + Network boot ------------ |