linux-kernel - [PATCH v3 5/5] kbuild: Allow adding modules into the FIT ramdisk

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Message-ID: <20250922224835.1918759-5-sjg@chromium.org>
Date: Mon, 22 Sep 2025 16:48:32 -0600
From: Simon Glass <sjg@...omium.org>
To: linux-arm-kernel@...ts.infradead.org
Cc: Nicolas Schier <nicolas@...sle.eu>,
	Tom Rini <trini@...sulko.com>,
	Ahmad Fatoum <a.fatoum@...gutronix.de>,
	J . Neuschäfer <j.ne@...teo.net>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Chen-Yu Tsai <wenst@...omium.org>,
	Simon Glass <sjg@...omium.org>,
	Ard Biesheuvel <ardb@...nel.org>,
	Han Shen <shenhan@...gle.com>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	Kees Cook <kees@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nicolas Schier <nicolas.schier@...ux.dev>,
	Rong Xu <xur@...gle.com>,
	linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 5/5] kbuild: Allow adding modules into the FIT ramdisk

Support 'make image.fit FIT_MODULES=1' to put all the modules into a
ramdisk image within the FIT.

Signed-off-by: Simon Glass <sjg@...omium.org>
Suggested-by: Ahmad Fatoum <a.fatoum@...gutronix.de>
---

(no changes since v1)

 scripts/Makefile.lib | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 1d581ba5df66..2e880d9b4706 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -398,9 +398,15 @@ MAKE_FIT := $(srctree)/scripts/make_fit.py
 # Use this to override the compression algorithm
 FIT_COMPRESSION ?= gzip
 
+# Set this to 1 to include an initrd with all the kernel modules
+FIT_MODULES ?= 0
+ifeq ($(FIT_MODULES),1)
+EXTRA := -B $(objtree) -m
+endif
+
 quiet_cmd_fit = FIT     $@
       cmd_fit = $(MAKE_FIT) -o $@ --arch $(UIMAGE_ARCH) --os linux \
-		--name '$(UIMAGE_NAME)' \
+		--name '$(UIMAGE_NAME)' $(EXTRA) \
 		$(if $(findstring 1,$(KBUILD_VERBOSE)),-v) \
 		$(if $(FIT_DECOMPOSE_DTBS),--decompose-dtbs) \
 		--compress $(FIT_COMPRESSION) -k $< @$(word 2,$^)
-- 
2.43.0

base-commit: 846bd2225ec3cfa8be046655e02b9457ed41973e
branch: fita3