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-rw-r--r--src/include/boot_device.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/include/boot_device.h b/src/include/boot_device.h
index a03e5aa8f3..84bd16ef65 100644
--- a/src/include/boot_device.h
+++ b/src/include/boot_device.h
@@ -27,7 +27,8 @@ enum bootdev_prot_type {
* most likely not to work so don't rely on such semantics.
*/
-/* Return the region_device for the read-only boot device. */
+/* Return the region_device for the read-only boot device. This is the root
+ device for all CBFS boot devices. */
const struct region_device *boot_device_ro(void);
/* Return the region_device for the read-write boot device. */