binman: doc: Add documentation for Xilinx Bootgen bintool
Add documentation for the 'bootgen' bintool
Signed-off-by: Lukas Funke <lukas.funke@weidmueller.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/tools/binman/bintools.rst b/tools/binman/bintools.rst
index 9d8f161..20ee243 100644
--- a/tools/binman/bintools.rst
+++ b/tools/binman/bintools.rst
@@ -204,3 +204,15 @@
in this process the public key is not added to the stage before u-boot proper.
Using `fdt_add_pubkey` the key can be injected to the SPL independent of
`mkimage`
+
+
+
+Bintool: bootgen: Sign ZynqMP FSBL image
+---------------------------------------------
+
+This bintool supports running `bootgen` in order to sign a SPL for ZynqMP
+devices.
+
+The bintool automatically creates an appropriate input image file (.bif) for
+bootgen based on the passed arguments. The output is a bootable,
+authenticated `boot.bin` file.