linux-kernel - [PATCH] arm64: Allow packing uncompressed images into distro packages

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Message-Id: <20240819-uncompressed-distro-packages-v1-1-c8accc8bc9ea@quicinc.com>
Date: Mon, 19 Aug 2024 20:11:58 -0700
From: Bjorn Andersson <andersson@...nel.org>
To: Catalin Marinas <catalin.marinas@....com>, 
 Will Deacon <will@...nel.org>, 
 Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, Bjorn Andersson <quic_bjorande@...cinc.com>
Subject: [PATCH] arm64: Allow packing uncompressed images into distro
 packages

From: Bjorn Andersson <quic_bjorande@...cinc.com>

The distro packages (deb-pkg, pacman-pkg, rpm-pkg) are generated using
the compressed kernel image, which means that the kernel once installed
can not be booted with systemd-boot.

This differs from the packages generated by the distros themselves,
which uses the uncompressed image.

Expand the newly introduced CONFIG_COMPRESSED_INSTALL option to allow
selection of which version of the kernel image should be packaged into
the distro packages.

Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
---
 arch/arm64/Makefile | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index f6bc3da1ef11..7bb9a0a5500a 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -166,9 +166,13 @@ BOOT_TARGETS	:= Image vmlinuz.efi image.fit
 PHONY += $(BOOT_TARGETS)
 
 ifeq ($(CONFIG_EFI_ZBOOT),)
-KBUILD_IMAGE	:= $(boot)/Image.gz
+  ifeq ($(CONFIG_COMPRESSED_INSTALL),y)
+    KBUILD_IMAGE := $(boot)/Image.gz
+  else
+    KBUILD_IMAGE := $(boot)/Image
+  endif
 else
-KBUILD_IMAGE	:= $(boot)/vmlinuz.efi
+  KBUILD_IMAGE := $(boot)/vmlinuz.efi
 endif
 
 all:	$(notdir $(KBUILD_IMAGE))
@@ -182,13 +186,6 @@ $(BOOT_TARGETS): vmlinux
 Image.%: Image
 	$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
 
-ifeq ($(CONFIG_COMPRESSED_INSTALL),y)
- DEFAULT_KBUILD_IMAGE = $(KBUILD_IMAGE)
-else
- DEFAULT_KBUILD_IMAGE = $(boot)/Image
-endif
-
-install: KBUILD_IMAGE := $(DEFAULT_KBUILD_IMAGE)
 install zinstall:
 	$(call cmd,install)
 

---
base-commit: 469f1bad3c1c6e268059f78c0eec7e9552b3894c
change-id: 20240819-uncompressed-distro-packages-8da6959ed698

Best regards,
-- 
Bjorn Andersson <quic_bjorande@...cinc.com>