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-rw-r--r--documentation/ref-manual/ref-classes.xml25
1 files changed, 25 insertions, 0 deletions
diff --git a/documentation/ref-manual/ref-classes.xml b/documentation/ref-manual/ref-classes.xml
index 979e7344b0..d65ac0b0bd 100644
--- a/documentation/ref-manual/ref-classes.xml
+++ b/documentation/ref-manual/ref-classes.xml
@@ -940,6 +940,31 @@
940 </para> 940 </para>
941</section> 941</section>
942 942
943<section id='ref-classes-image-types'>
944 <title><filename>image-types.bbclass</filename></title>
945
946 <para>
947 The image types (<filename>image-types</filename>) class defines all of
948 the standard image output types that you can enable through the
949 <link linkend='var-IMAGE_FSTYPES'><filename>IMAGE_FSTYPES</filename></link>
950 variable.
951 You can use this class as a reference on how to add support for custom
952 image output types.
953 </para>
954
955 <para>
956 By default, this class is enabled through the
957 <link linkend='var-IMAGE_CLASSES'><filename>IMAGE_CLASSES</filename></link>
958 variable in
959 <link linkend='ref-classes-image'><filename>image.bbclass</filename></link>.
960 If you define your own image types using a custom BitBake class and
961 then use <filename>IMAGE_CLASSES</filename> to enable it, the custom
962 class must either inherit <filename>image-types</filename> or
963 <filename>image-types</filename> must also appear in
964 <filename>IMAGE_CLASSES</filename>.
965 </para>
966</section>
967
943<section id='ref-classes-mime'> 968<section id='ref-classes-mime'>
944 <title><filename>mime.bbclass</filename></title> 969 <title><filename>mime.bbclass</filename></title>
945 970