From f1c8fc5e67bfb40fa7d2b91b5972eb6f0e8760ad Mon Sep 17 00:00:00 2001
From: Sughosh Ganu <sughosh.ganu@linaro.org>
Date: Tue, 10 Oct 2023 14:40:58 +0530
Subject: [PATCH] btool: mkeficapsule: Add support for EFI empty capsule
generation
Add a method to the mkeficapsule bintool to generate empty
capsules. These are capsules needed for the FWU A/B update feature.
Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
tools/binman/btool/mkeficapsule.py | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/tools/binman/btool/mkeficapsule.py b/tools/binman/btool/mkeficapsule.py
index 61179747ff..ef1da638df 100644
--- a/tools/binman/btool/mkeficapsule.py
+++ b/tools/binman/btool/mkeficapsule.py
@@ -80,6 +80,32 @@ class Bintoolmkeficapsule(bintool.Bintool):
return self.run_cmd(*args)
+ def generate_empty_capsule(self, image_guid, output_fname,
+ accept=True):
+ """Generate empty capsules for FWU A/B updates
+
+ Args:
+ image_guid (str): GUID used for identifying the image
+ in case of an accept capsule
+ output_fname (str): Path to the output capsule file
+ accept (bool): Generate an accept capsule,
+ else a revert capsule
+
+ Returns:
+ str: Tool output
+ """
+ if accept:
+ args = [
+ f'--guid={image_guid}',
+ '--fw-accept'
+ ]
+ else:
+ args = [ '--fw-revert' ]
+
+ args += [ output_fname ]
+
+ return self.run_cmd(*args)
+
def fetch(self, method):
"""Fetch handler for mkeficapsule
--
2.39.5