Thread (10 messages) 10 messages, 4 authors, 2025-10-06

Re: [PATCH v3 5/5] kbuild: Allow adding modules into the FIT ramdisk

From: Simon Glass <sjg@chromium.org>
Date: 2025-09-23 11:41:37
Also in: linux-kbuild, lkml

Hi Randy,

On Mon, 22 Sept 2025 at 17:08, Randy Dunlap [off-list ref] wrote:
Hi,

On 9/22/25 3:48 PM, Simon Glass wrote:
quoted
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@chromium.org>
Suggested-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
Regarding $subject, a comment in scripts/make_fit.py says:

  Note that this tool does not yet support adding a ramdisk / initrd.

Is the comment incorrect or are you changing that feature here?
I am changing it (in patch 2 of this series).

Regards,
Simon
Thanks.
quoted
(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,$^)
--
~Randy
  
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