Changes in wrapper

97f902dd4c99f8d085da5343dc58ae4f6ce7bdd9 - powerpc/boot: Allow text relocations for pseries wrapper with binutils 2.46+

Mon, 25 May 2026 18:16:01 +0200

powerpc/boot: Allow text relocations for pseries wrapper with binutils 2.46+Binutils 2.46 changed the default linker behavior from '-z notext' to'-z text', which treats dynamic relocations in read-only segments aserrors rather than warnings. This causes the pseries boot wrapper buildto fail with: /usr/bin/ld.bfd: arch/powerpc/boot/wrapper.a(crt0.o): warning: relocation against `_platform_stack_top' in read-only section `.text' /usr/bin/ld.bfd: error: read-only segment has dynamic relocationsThe pseries wrapper uses '-pie' to create position-independent code.However, crt0.S contains a pointer to '_platform_stack_top' in the .textsection, which requires a dynamic relocation at runtime. This createsDT_TEXTREL (text relocations), which were allowed by default in binutils2.45 and earlier (via implicit '-z notext') but are now rejected bybinutils 2.46+.Add '-z notext' linker flag to explicitly allow text relocations forthe pseries platform, similar to what is already done for the epaprplatform. This restores the previous behavior and allows the bootwrapper to build successfully with binutils 2.46+.Signed-off-by: Amit Machhiwal Tested-by: Anushree Mathur Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20260525161601.32097-1-amachhiw@linux.ibm.com List of files: /linux/arch/powerpc/boot/wrapper

cbc8bd1b7d905b3f746542cc726837a954a46bd8 - powerpc/boot: Add missing compression methods to usage

Tue, 16 Sep 2025 08:18:40 +0200

powerpc/boot: Add missing compression methods to usagelzma and lzo are also supported.Signed-off-by: Antonio Alvarez Feijoo Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250916061840.5492-1-antonio.feijoo@suse.com List of files: /linux/arch/powerpc/boot/wrapper

a41de5ccff85a0fe45ea1b4078230bf53faa7dc4 - arch/powerpc: Remove support for older GCC and binutils

Tue, 01 Jul 2025 12:50:07 +0200

arch/powerpc: Remove support for older GCC and binutilsCommit 118c40b7b503 ("kbuild: require gcc-8 and binutils-2.30") raisedminimum GCC_VERSION and LD_VERSION.Simplify powerpc build accordingly.Signed-off-by: Christophe Leroy Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/b6b94cba7492c8581e8d5d25b15962e5ad7a37c2.1751366979.git.christophe.leroy@csgroup.eu List of files: /linux/arch/powerpc/boot/wrapper

e3f506b78d921e48a00d005bea5c45ec36a99240 - powerpc/boot: Fix dash warning

Wed, 23 Apr 2025 10:21:54 +0200

powerpc/boot: Fix dash warning'commit b2accfe7ca5b ("powerpc/boot: Check for ld-option support")' suppressedlinker warnings, but the expressed used did not go well with POSIX shell (dash)resulting with this warningarch/powerpc/boot/wrapper: 237: [: 0: unexpected operatorld: warning: arch/powerpc/boot/zImage.epapr has a LOAD segment with RWX permissionsFix the check to handle the reported warning. Patch also fixescouple of shellcheck reported errors for the same line.In arch/powerpc/boot/wrapper line 237:if [ $(${CROSS}ld -v --no-warn-rwx-segments &>/dev/null; echo $?) -eq 0 ]; then ^-- SC2046 (warning): Quote this to prevent word splitting. ^------^ SC2086 (info): Double quote to prevent globbing and word splitting. ^---------^ SC3020 (warning): In POSIX sh, &> is undefined.Fixes: b2accfe7ca5b ("powerpc/boot: Check for ld-option support")Reported-by: Stephen Rothwell Suggested-by: Stephen Rothwell Tested-by: Venkat Rao Bagalkote Reviewed-by: Stephen Rothwell Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250423082154.30625-1-maddy@linux.ibm.com List of files: /linux/arch/powerpc/boot/wrapper

b2accfe7ca5bc9f9af28e603b79bdd5ad8df5c0b - powerpc/boot: Check for ld-option support

Tue, 01 Apr 2025 02:42:18 +0200

powerpc/boot: Check for ld-option supportCommit 579aee9fc594 ("powerpc: suppress some linker warnings in recent linker versions")enabled support to add linker option "--no-warn-rwx-segments",if the version is greater than 2.39. Similar build warning werereported recently from linker version 2.35.2.ld: warning: arch/powerpc/boot/zImage.epapr has a LOAD segment with RWX permissionsld: warning: arch/powerpc/boot/zImage.pseries has a LOAD segment with RWX permissionsFix the warning by checking for "--no-warn-rwx-segments"option support in linker to enable it, instead of checkingfor the version range.Fixes: 579aee9fc594 ("powerpc: suppress some linker warnings in recent linker versions")Reported-by: Venkat Rao Bagalkote Suggested-by: Christophe Leroy Tested-by: Venkat Rao Bagalkote Closes: https://lore.kernel.org/linuxppc-dev/61cf556c-4947-4bd6-af63-892fc0966dad@linux.ibm.com/Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250401004218.24869-1-maddy@linux.ibm.com List of files: /linux/arch/powerpc/boot/wrapper

62f8f307c80e99ab18d38aa1a5bbbc18128ee5f8 - powerpc/64: Remove maple platform

Sun, 13 Oct 2024 12:29:57 +0200

powerpc/64: Remove maple platformThe maple platform was added in 2004 [1], to support the "Maple" 970FXevaluation board.It was later used for IBM JS20/JS21 machines, as well as the Biminimachine, aka "Yellow Dog Powerstation".Sadly all those machines have passed into memory, and there's been noevidence for years that anyone is still using any of them.Remove the platform and related code. It can always be reinstated ifthere's interest.Note that this has no impact on support for 970FX based Power Macs.[1]: https://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux-fullhistory.git/commit/?id=f0d068d65c5e555ffcfbc189de32598f6f00770cSigned-off-by: Michael Ellerman Link: https://patch.msgid.link/20241013102957.548291-1-mpe@ellerman.id.au List of files: /linux/arch/powerpc/boot/wrapper

3efe19a9b15411119d4a35ec5790ad49f0a0234c - powerpc: Remove 40x leftovers

Thu, 11 Jul 2024 12:49:01 +0200

powerpc: Remove 40x leftoversRemove stale references to 40x.Fixes: e939da89d024 ("powerpc: Remove 40x from Kconfig and defconfig")Fixes: 548f5244f106 ("powerpc/40x: Remove EP405")Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://msgid.link/ab30ae302783d8617d407864b92db1b926ab5ab9.1720694914.git.christophe.leroy@csgroup.eu List of files: /linux/arch/powerpc/boot/wrapper

839ff58e63ce30988205706aa9ed22bd6bf229f3 - powerpc/boot: Remove all 40x platforms from boot

Fri, 28 Jun 2024 14:11:56 +0200

powerpc/boot: Remove all 40x platforms from bootRemove 40x platforms from the boot directory.Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://msgid.link/20240628121201.130802-2-mpe@ellerman.id.au List of files: /linux/arch/powerpc/boot/wrapper

3287ebd7fd01e853ca4da8be675322429400e2bd - powerpc/boot: Fix incorrect version calculation issue in ld_version

Wed, 04 Jan 2023 21:24:37 +0100

powerpc/boot: Fix incorrect version calculation issue in ld_versionThe ld_version() function computes the wrong version value for certainld versions such as the following: $ ld --version GNU ld (GNU Binutils; SUSE Linux Enterprise 15) 2.37.20211103-150100.7.37For input 2.37.20211103, the value computed is 202348030000 which ishigher than the value for a later version like 2.39.0, which is23900000.This issue was highlighted because with the above ld version, thepowerpc kernel build started failing with ld error: "unrecognized option--no-warn-rwx-segments". This was caused due to the recent commit579aee9fc594 ("powerpc: suppress some linker warnings in recent linkerversions") which added the --no-warn-rwx-segments linker flag if the ldversion is greater than 2.39.Due to the bug in ld_version(), ld version 2.37.20111103 is wronglycalculated to be greater than 2.39 and the unsupported flag is added.To fix it, if version is of the form x.y.z and length(z) == 8, then mostprobably it is a date [yyyymmdd] commonly used for release snapshots andnot an actual new version. Hence, ignore the date part replacing it with0.Fixes: 579aee9fc594 ("powerpc: suppress some linker warnings in recent linker versions")Signed-off-by: Ojaswin Mujoo [mpe: Tweak change log wording/formatting, add Fixes tag]Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20230104202437.90039-1-ojaswin@linux.ibm.com List of files: /linux/arch/powerpc/boot/wrapper

a9ffb8ee7b65a468474d6a2be7e9cca4b8f8ea5f - powerpc: Use "grep -E" instead of "egrep"

Fri, 18 Nov 2022 10:40:29 +0100

powerpc: Use "grep -E" instead of "egrep"The latest version of grep claims the egrep is now obsolete so the buildnow contains warnings that look like: egrep: warning: egrep is obsolescent; using grep -Efix this up by moving the related file to use "grep -E" instead. sed -i "s/egrep/grep -E/g" `grep egrep -rwl arch/powerpc`Here are the steps to install the latest grep: wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz tar xf grep-3.8.tar.gz cd grep-3.8 && ./configure && make sudo make install export PATH=/usr/local/bin:$PATHSigned-off-by: Tiezhu Yang Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/1668764429-11540-1-git-send-email-yangtiezhu@loongson.cn List of files: /linux/arch/powerpc/boot/wrapper

579aee9fc594af94c242068c011b0233563d4bbf - powerpc: suppress some linker warnings in recent linker versions

Mon, 10 Oct 2022 07:57:21 +0200

powerpc: suppress some linker warnings in recent linker versionsThis is a follow on from commit 0d362be5b142 ("Makefile: link with -z noexecstack --no-warn-rwx-segments")for arch/powerpc/boot to address wanrings like: ld: warning: opal-calls.o: missing .note.GNU-stack section implies executable stack ld: NOTE: This behaviour is deprecated and will be removed in a future version of the linker ld: warning: arch/powerpc/boot/zImage.epapr has a LOAD segment with RWX permissionsThis fixes issue https://github.com/linuxppc/issues/issues/417Signed-off-by: Stephen Rothwell Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20221010165721.106267e6@canb.auug.org.au List of files: /linux/arch/powerpc/boot/wrapper

2df8220cc511326508ec4da2f43ef69311bdd7b9 - kbuild: build init/built-in.a just once

Sun, 28 Aug 2022 04:39:53 +0200

kbuild: build init/built-in.a just onceKbuild builds init/built-in.a twice; first during the ordinarydirectory descending, second from scripts/link-vmlinux.sh.We do this because UTS_VERSION contains the build version and thetimestamp. We cannot update it during the normal directory traversalsince we do not yet know if we need to update vmlinux. UTS_VERSION istemporarily calculated, but omitted from the update check. Otherwise,vmlinux would be rebuilt every time.When Kbuild results in running link-vmlinux.sh, it increments theversion number in the .version file and takes the timestamp at thattime to really fix UTS_VERSION.However, updating the same file twice is a footgun. To avoid nastytimestamp issues, all build artifacts that depend on init/built-in.aare atomically generated in link-vmlinux.sh, where some of them do notneed rebuilding.To fix this issue, this commit changes as follows:[1] Split UTS_VERSION out to include/generated/utsversion.h from include/generated/compile.h include/generated/utsversion.h is generated just before the vmlinux link. It is generated under include/generated/ because some decompressors (s390, x86) use UTS_VERSION.[2] Split init_uts_ns and linux_banner out to init/version-timestamp.c from init/version.c init_uts_ns and linux_banner contain UTS_VERSION. During the ordinary directory descending, they are compiled with __weak and used to determine if vmlinux needs relinking. Just before the vmlinux link, they are compiled without __weak to embed the real version and timestamp.Signed-off-by: Masahiro Yamada List of files: /linux/arch/powerpc/boot/wrapper

87c78b612f4feccdcf4019351206ebe0e3dfe828 - powerpc: Fix all occurences of "the the"

Wed, 18 May 2022 16:26:29 +0200

powerpc: Fix all occurences of "the the"Rather than waiting for the bots to fix these one-by-one, fix alloccurences of "the the" throughout arch/powerpc.Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220518142629.513007-1-mpe@ellerman.id.au List of files: /linux/arch/powerpc/boot/wrapper

b949d009dd52ecdced248889cf11297677f9e8a6 - powerpc/boot: Set LC_ALL=C in wrapper script

Tue, 26 Oct 2021 15:48:29 +0200

powerpc/boot: Set LC_ALL=C in wrapper scriptWhile trying to build a simple Image for ACADIA platform, I got thefollowing error: WRAP arch/powerpc/boot/simpleImage.acadia INFO: Uncompressed kernel (size 0x6ae7d0) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) powerpc64-linux-gnu-ld : mode d'émulation non reconnu : -T Émulations prises en charge : elf64ppc elf32ppc elf32ppclinux elf32ppcsim elf64lppc elf32lppc elf32lppclinux elf32lppcsim make[1]: *** [arch/powerpc/boot/Makefile:424 : arch/powerpc/boot/simpleImage.acadia] Erreur 1 make: *** [arch/powerpc/Makefile:285 : simpleImage.acadia] Erreur 2Trying again with V=1 shows the following command powerpc64-linux-gnu-ld -m -T arch/powerpc/boot/zImage.lds -Ttext 0x700000 --no-dynamic-linker -o arch/powerpc/boot/simpleImage.acadia -Map wrapper.map arch/powerpc/boot/fixed-head.o arch/powerpc/boot/simpleboot.o ./zImage.3278022.o arch/powerpc/boot/wrapper.aThe argument of '-m' is missing.This is due to the wrapper script calling 'objdump -p vmlinux' andlooking for 'file format', whereas the output of objdump is: vmlinux: format de fichier elf32-powerpc En-tête de programme: LOAD off 0x00010000 vaddr 0xc0000000 paddr 0x00000000 align 2**16 filesz 0x0069e1d4 memsz 0x006c128c flags rwx NOTE off 0x0064591c vaddr 0xc063591c paddr 0x0063591c align 2**2 filesz 0x00000054 memsz 0x00000054 flags ---Add LC_ALL=C at the beginning of the wrapper script in order to get theoutput expected by the script: vmlinux: file format elf32-powerpc Program Header: LOAD off 0x00010000 vaddr 0xc0000000 paddr 0x00000000 align 2**16 filesz 0x0069e1d4 memsz 0x006c128c flags rwx NOTE off 0x0064591c vaddr 0xc063591c paddr 0x0063591c align 2**2 filesz 0x00000054 memsz 0x00000054 flags ---Signed-off-by: Christophe Leroy Acked-by: Segher Boessenkool Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/a9ff3bc98035f63b122c051f02dc47c7aed10430.1635256089.git.christophe.leroy@csgroup.eu List of files: /linux/arch/powerpc/boot/wrapper

c12adb0678446b3284a6135dc5fa7aa3b6a968a5 - powerpc: retire sbc8548 board support

Thu, 07 Jan 2021 14:40:38 +0100

powerpc: retire sbc8548 board supportThe support was for this was mainlined 13 years ago, in v2.6.25[0e0fffe88767] just around the ppc --> powerpc migration.I believe the board was introduced a year or two before that, so itis roughly a 15 year old platform - with the CPU speed and memory sizethat was typical for that era.I haven't had one of these boards for several years, and availabilitywas discontinued several years before that.Given that, there is no point in adding a burden to testing coveragethat builds all possible defconfigs, so it makes sense to remove it.Of course it will remain in the git history forever, for anyone whohappens to find a functional board and wants to tinker with it.Acked-by: Scott Wood Signed-off-by: Paul Gortmaker Signed-off-by: Michael Ellerman List of files: /linux/arch/powerpc/boot/wrapper

4a21192e2796c3338c4b0083b494a84a61311aaf - powerpc/boot: Add a boot wrapper for Microwatt

Fri, 18 Jun 2021 05:49:43 +0200

powerpc/boot: Add a boot wrapper for MicrowattThis allows microwatt's kernel to be built with an embedded device tree.Load to arch/powerpc/boot/dtbImage.microwatt to 0x500000: mw_debug -b fpga stop load arch/powerpc/boot/dtbImage.microwatt 500000 startSigned-off-by: Joel Stanley Signed-off-by: Paul Mackerras Reviewed-by: Segher Boessenkool Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/YMwX19wym3kQ7guu@thinks.paulus.ozlabs.org List of files: /linux/arch/powerpc/boot/wrapper

77a88274dc1a2cf3a775161d9a3242bc798ee680 - kbuild: replace LANG=C with LC_ALL=C

Fri, 30 Apr 2021 03:56:27 +0200

kbuild: replace LANG=C with LC_ALL=CLANG gives a weak default to each LC_* in case it is not explicitlydefined. LC_ALL, if set, overrides all other LC_* variables. LANG < LC_CTYPE, LC_COLLATE, LC_MONETARY, LC_NUMERIC, ... < LC_ALLThis is why documentation such as [1] suggests to set LC_ALL in buildscripts to get the deterministic result.LANG=C is not strong enough to override LC_* that may be set by endusers.[1]: https://reproducible-builds.org/docs/locales/Signed-off-by: Masahiro Yamada Acked-by: Michael Ellerman (powerpc)Reviewed-by: Matthias Maennich Acked-by: Matthieu Baerts (mptcp)Reviewed-by: Greg Kroah-Hartman List of files: /linux/arch/powerpc/boot/wrapper

4c078c86b4a466db221a08d423c2eae9332c2641 - powerpc/boot/wrapper: Add "-z notext" flag to disable diagnostic

Fri, 20 Nov 2020 23:40:32 +0100

powerpc/boot/wrapper: Add "-z notext" flag to disable diagnosticThe "-z notext" flag disables reporting an error if DT_TEXTREL is set. ld.lld: error: can't create dynamic relocation R_PPC64_ADDR64 against symbol: _start in readonly segment; recompile object files with -fPIC or pass '-Wl,-z,notext' to allow text relocations in the output >>> defined in >>> referenced by crt0.o:(.text+0x8) in archive arch/powerpc/boot/wrapper.aThe BFD linker disables this by default (though it's configurable incurrent versions). LLD enables this by default. So we add the flag tokeep LLD from emitting the error.Signed-off-by: Bill Wendling Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20201120224034.191382-2-morbo@google.com List of files: /linux/arch/powerpc/boot/wrapper

26ba9f9651d802ba38583138f43fea5dc7eb0fd6 - powerpc/boot/wrapper: Add "-z rodynamic" when using LLD

Wed, 18 Nov 2020 23:39:10 +0100

powerpc/boot/wrapper: Add "-z rodynamic" when using LLDNormally all read-only sections precede SHF_WRITE sections. .dynamicand .got have the SHF_WRITE flag; .dynamic probably because ofDT_DEBUG. LLD emits an error when this happens, so use "-z rodynamic"to mark .dynamic as read-only.Signed-off-by: Bill Wendling Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20201118223910.2711337-1-morbo@google.com List of files: /linux/arch/powerpc/boot/wrapper

7ade8495dcfd788a76e6877c9ea86f5207369ea4 - powerpc: Remove Xilinx PPC405/PPC440 support

Thu, 21 May 2020 18:55:52 +0200

powerpc: Remove Xilinx PPC405/PPC440 supportThe latest Xilinx design tools called ISE and EDK has been released inOctober 2013. New tool doesn't support any PPC405/PPC440 new designs.These platforms are no longer supported and tested.PowerPC 405/440 port is orphan from 2013 bycommit cdeb89943bfc ("MAINTAINERS: Fix incorrect status tag") andcommit 19624236cce1 ("MAINTAINERS: Update Grant's email address and maintainership")that's why it is time to remove the support fot these platforms.Signed-off-by: Michal Simek Signed-off-by: Christophe Leroy Acked-by: Arnd Bergmann Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/8c593895e2cb57d232d85ce4d8c3a1aa7f0869cc.1590079968.git.christophe.leroy@csgroup.eu List of files: /linux/arch/powerpc/boot/wrapper