Changes in Makefile

181e71f6 - arm64: boot: add Image.xz support

Sun, 21 Jul 2024 13:36:30 +0000

arm64: boot: add Image.xz supportThe Image.* targets existed for other compressors already. Bootloadersupport is needed for decompression.This is for CONFIG_EFI_ZBOOT=n. With CONFIG_EFI_ZBOOT=y, XZ was alreadyavailable.Link: https://lkml.kernel.org/r/20240721133633.47721-16-lasse.collin@tukaani.orgSigned-off-by: Lasse Collin Cc: Simon Glass Cc: Catalin Marinas Cc: Will Deacon Cc: Jules Maselbas Cc: Albert Ou Cc: Emil Renner Berthing Cc: Greg Kroah-Hartman Cc: Herbert Xu Cc: Joel Stanley Cc: Jonathan Corbet Cc: Jubin Zhong Cc: Krzysztof Kozlowski Cc: Michael Ellerman Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Randy Dunlap Cc: Rui Li Cc: Sam James Cc: Thomas Gleixner Signed-off-by: Andrew Morton List of files: /linux-6.15/arch/arm64/boot/Makefile

7a23b027 - arm64: boot: Support Flat Image Tree

Fri, 29 Mar 2024 03:28:36 +0000

arm64: boot: Support Flat Image TreeAdd a script which produces a Flat Image Tree (FIT), a single filecontaining the built kernel and associated devicetree files.Compression defaults to gzip which gives a good balance of size andperformance.The files compress from about 86MB to 24MB using this approach.The FIT can be used by bootloaders which support it, such as U-Bootand Linuxboot. It permits automatic selection of the correctdevicetree, matching the compatible string of the running board withthe closest compatible string in the FIT. There is no need forfilenames or other workarounds.Add a 'make image.fit' build target for arm64, as well.The FIT can be examined using 'dumpimage -l'.This uses the 'dtbs-list' file but processes only .dtb files, ignoringthe overlay .dtbo files.This features requires pylibfdt (use 'pip install libfdt'). It alsorequires compression utilities for the algorithm being used. Supportedcompression options are the same as the Image.xxx files. UseFIT_COMPRESSION to select an algorithm other than gzip.While FIT supports a ramdisk / initrd, no attempt is made to supportthis here, since it must be built separately from the Linux build.Signed-off-by: Simon Glass Acked-by: Masahiro Yamada Link: https://lore.kernel.org/r/20240329032836.141899-3-sjg@chromium.orgSigned-off-by: Will Deacon List of files: /linux-6.15/arch/arm64/boot/Makefile

97ba4416 - efi/libstub: zboot: do not use $(shell ...) in cmd_copy_and_pad

Mon, 18 Dec 2023 08:01:27 +0000

efi/libstub: zboot: do not use $(shell ...) in cmd_copy_and_padYou do not need to use $(shell ...) in recipe lines, as they are alreadyexecuted in a shell. An alternative solution is $$(...), which is anescaped sequence of the shell's command substituion, $(...).For this case, there is a reason to avoid $(shell ...).Kbuild detects command changes by using the if_changed macro, whichcompares the previous command recorded in .*.cmd with the currentcommand from Makefile. If they differ, Kbuild re-runs the build rule.To diff the commands, Make must expand $(shell ...) first. It means thathexdump is executed every time, even when nothing needs rebuilding. IfKbuild determines that vmlinux.bin needs rebuilding, hexdump will beexecuted again to evaluate the 'cmd' macro, one more time to reallybuild vmlinux.bin, and finally yet again to record the expanded commandinto .*.cmd.Replace $(shell ...) with $$(...) to avoid multiple, unnecessay shellevaluations. Since Make is agnostic about the shell code, $(...), theif_changed macro compares the string "$(hexdump -s16 -n4 ...)" verbatim,so hexdump is run only for building vmlinux.bin.For the same reason, $(shell ...) in EFI_ZBOOT_OBJCOPY_FLAGS should beeliminated.While I was here, I replaced '&&' with ';' because a command forif_changed is executed with 'set -e'.Signed-off-by: Masahiro Yamada Reviewed-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20231218080127.907460-1-masahiroy@kernel.orgSigned-off-by: Will Deacon List of files: /linux-6.15/arch/arm64/boot/Makefile

45dd403d - efi/zboot: arm64: Inject kernel code size symbol into the zboot payload

Tue, 18 Apr 2023 13:49:49 +0000

efi/zboot: arm64: Inject kernel code size symbol into the zboot payloadThe EFI zboot code is not built as part of the kernel proper, like theordinary EFI stub, but still needs access to symbols that are definedonly internally in the kernel, and are left unexposed deliberately toavoid creating ABI inadvertently that we're stuck with later.So capture the kernel code size of the kernel image, and inject it as anELF symbol into the object that contains the compressed payload, whereit will be accessible to zboot code that needs it.Signed-off-by: Ard Biesheuvel Acked-by: Mark Rutland List of files: /linux-6.15/arch/arm64/boot/Makefile

538bc0f4 - efi/zboot: Set forward edge CFI compat header flag if supported

Tue, 18 Apr 2023 13:49:51 +0000

efi/zboot: Set forward edge CFI compat header flag if supportedAdd some plumbing to the zboot EFI header generation to set the newlyintroduced DllCharacteristicsEx flag associated with forward edge CFIenforcement instructions (BTI on arm64, IBT on x86)x86 does not currently uses the zboot infrastructure, so let's wire itup only for arm64.Signed-off-by: Ard Biesheuvel List of files: /linux-6.15/arch/arm64/boot/Makefile

c37b830f - arm64: efi: enable generic EFI compressed boot

Sun, 01 May 2022 23:10:03 +0000

arm64: efi: enable generic EFI compressed bootWire up the generic EFI zboot support for arm64.Signed-off-by: Ard Biesheuvel Tested-by: Jeremy Linton Acked-by: Catalin Marinas List of files: /linux-6.15/arch/arm64/boot/Makefile

9f6a503d - arm64: boot: add zstd support

Sun, 19 Jun 2022 17:06:57 +0000

arm64: boot: add zstd supportSupport build the zstd compressed Image.zst. Similar as othercompressed formats, the Image.zst is not self-decompressing andthe bootloader still needs to handle decompression beforelaunching the kernel image.Signed-off-by: Jisheng Zhang Link: https://lore.kernel.org/r/20220619170657.2657-1-jszhang@kernel.orgSigned-off-by: Will Deacon List of files: /linux-6.15/arch/arm64/boot/Makefile

70a4039b - arm64: move the (z)install rules to arch/arm64/Makefile

Thu, 29 Jul 2021 14:05:27 +0000

arm64: move the (z)install rules to arch/arm64/MakefileCurrently, the (z)install targets in arch/arm64/Makefile descend intoarch/arm64/boot/Makefile to invoke the shell script, but there is nogood reason to do so.arch/arm64/Makefile can run the shell script directly.Signed-off-by: Masahiro Yamada Link: https://lore.kernel.org/r/20210729140527.443116-1-masahiroy@kernel.orgSigned-off-by: Catalin Marinas List of files: /linux-6.15/arch/arm64/boot/Makefile

d7bbd6c1 - arm64: kbuild: remove compressed images on 'make ARCH=arm64 (dist)clean'

Tue, 21 Jan 2020 15:54:39 +0000

arm64: kbuild: remove compressed images on 'make ARCH=arm64 (dist)clean'Since v4.3-rc1 commit 0723c05fb75e44 ("arm64: enable more compressedImage formats"), it is possible to build Image.{bz2,lz4,lzma,lzo}AArch64 images. However, the commit missed adding support for removingthose images on 'make ARCH=arm64 (dist)clean'.Fix this by adding them to the target list.Make sure to match the order of the recipes in the makefile.Cc: stable@vger.kernel.org # v4.3+Fixes: 0723c05fb75e44 ("arm64: enable more compressed Image formats")Signed-off-by: Dirk Behme Signed-off-by: Eugeniu Rosca Reviewed-by: Masahiro Yamada Signed-off-by: Will Deacon List of files: /linux-6.15/arch/arm64/boot/Makefile

f8fa70f3 - arm64: localise Image objcopy flags

Tue, 12 Jul 2016 15:28:01 +0000

arm64: localise Image objcopy flagsWe currently define OBJCOPYFLAGS in the top-level arm64 Makefile, andthus these flags will be passed to all uses of objcopy, kernel-wide, forwhich they are not explicitly overridden. The flags we set are intendedfor converting vmlinux (and ELF) into Image (a raw binary), and thus theflags chosen are problematic for some other uses which do not expect araw binary result, e.g. the upcoming lkdtm rodata test: http://www.openwall.com/lists/kernel-hardening/2016/06/08/2This patch localises the objcopy flags such that they are only used forthe vmlinux -> Image conversion.Signed-off-by: Mark Rutland Cc: Will Deacon Acked-by: Kees Cook Tested-by: Laura Abbott Signed-off-by: Catalin Marinas List of files: /linux-6.15/arch/arm64/boot/Makefile

8684fa3e - arm64: kbuild: make "make install" not depend on vmlinux

Fri, 19 Feb 2016 06:05:50 +0000

arm64: kbuild: make "make install" not depend on vmlinuxFor the same reason as commit 19514fc665ff ("arm, kbuild: make "makeinstall" not depend on vmlinux"), the install targets should nevertrigger the rebuild of the kernel.Signed-off-by: Masahiro Yamada Signed-off-by: Will Deacon List of files: /linux-6.15/arch/arm64/boot/Makefile

0723c05f - arm64: enable more compressed Image formats

Thu, 16 Jul 2015 20:26:16 +0000

arm64: enable more compressed Image formatsPlumb up Makefile arguments for the already supported formats in the kbuildsystem: lz4, bzip2, lzma, and lzo.Note that just as with Image.gz, these images are not self-decompressing andthe booting firmware still needs to handle decompression before launching thekernel image.Signed-off-by: Olof Johansson Signed-off-by: Will Deacon List of files: /linux-6.15/arch/arm64/boot/Makefile

da4cbc6d - arm64: use new common dtc rule

Tue, 27 Nov 2012 23:29:12 +0000

arm64: use new common dtc ruleThe current rules have the .dtb files build in a different directoryfrom the .dts files. This patch changes arm64 to use the generic dtbrule which builds .dtb files in the same directory as the source .dts.This requires moving parts of arch/arm64/boot/Makefile into newly createdarch/arm64/boot/dts/Makefile, and updating arch/arm64/Makefile to call thenew Makefile.Acked-by: Catalin Marinas Cc: linux-arm-kernel@lists.infradead.orgSigned-off-by: Stephen Warren Signed-off-by: Rob Herring List of files: /linux-6.15/arch/arm64/boot/Makefile

8c2c3df3 - arm64: Build infrastructure

Fri, 20 Apr 2012 13:45:54 +0000

arm64: Build infrastructureThis patch adds Makefile and Kconfig files required for building anAArch64 kernel.Signed-off-by: Will Deacon Signed-off-by: Catalin Marinas Acked-by: Tony Lindgren Acked-by: Nicolas Pitre Acked-by: Olof Johansson Acked-by: Santosh Shilimkar Acked-by: Arnd Bergmann List of files: /linux-6.15/arch/arm64/boot/Makefile