[PATCH 09/12] binman: doc: Add documentation for Xilinx Bootgen bintool

[lukas.funke-oss at weidmueller.com]

From: Lukas Funke <lukas.funke at weidmueller.com>

Add documentation for the 'bootgen' bintool

Signed-off-by: Lukas Funke <lukas.funke at weidmueller.com>
---

 tools/binman/bintools.rst | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/tools/binman/bintools.rst b/tools/binman/bintools.rst
index 88221adbe1..c8d69f7177 100644
--- a/tools/binman/bintools.rst
+++ b/tools/binman/bintools.rst
@@ -193,3 +193,15 @@ Normally signing is done using `mkimage` in context of `binman sign`. However,
 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.
-- 
2.30.2