[meta-zephyr][PATCH v3] README.txt: Document generate-zephyr-machine use

Eilís Ní Fhlannagáin

From: Eilís Ní Fhlannagáin <elizabeth.flanagan@...>

This commit just adds some documentation on how to use the machine
generation recipe.

Signed-off-by: Eilís Ní Fhlannagáin <elizabeth.flanagan@...>
README.txt | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/README.txt b/README.txt
index f3dda51..ec860fd 100644
--- a/README.txt
+++ b/README.txt
@@ -105,6 +105,22 @@ or
$ MACHINE=qemu-nios2 bitbake zephyr-kernel-test-all -c testimage

+Generating OE Machines based on Zephyr board definitions
+We currently have a recipe called generate-zephry-machines which will go through
+and attempt to create an OE machine conf file for every board in Zephyr.
+This is run via:
+MACHINE=qemu-x86 bitbake generate-zephyr-machines
+The output is then put in the normal deploy dir. This recipe is really only
+useful for maintainers. There is currently no way to use the Zephyr board
+definition in a single step build. So if you wish to regenerate those machines,
+you will need to run the above, copy the conf files from the deploy dir to the
+machine conf directory and then run your build. This shouldn't need to happen


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