kernel/linux.git/arch/powerpc/boot, branch v6.18.44

powerpc/boot: Fix treeboot-akebono CPU node lookup check

2026-08-09T18:25:05+00:00

[ Upstream commit b24fc8278b70a9d27ec801a427ab4de9b769d69a ] fdt_node_offset_by_prop_value() returns a negative error code on failure - fix the check accordingly. Fixes: 2a2c74b2efcb ("IBM Akebono: Add the Akebono platform") Signed-off-by: Thorsten Blum Reviewed-by: Ritesh Harjani (IBM) Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20260702211554.56923-6-thorsten.blum@linux.dev Signed-off-by: Sasha Levin

powerpc/boot: Fix treeboot-currituck CPU node lookup check

2026-08-09T18:25:05+00:00

[ Upstream commit 43863f6575d2211e8c5157fefb83ad0ad046aab4 ] fdt_node_offset_by_prop_value() returns a negative error code on failure - fix the check accordingly. Fixes: 228d55053397 ("powerpc/47x: Add support for the new IBM currituck platform") Signed-off-by: Thorsten Blum Reviewed-by: Ritesh Harjani (IBM) Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20260702211554.56923-5-thorsten.blum@linux.dev Signed-off-by: Sasha Levin

powerpc/boot: Fix simpleboot CPU node lookup check

2026-08-09T18:25:04+00:00

[ Upstream commit c824ab65685bb119c6c6a3a200b3428c72862d5a ] fdt_node_offset_by_prop_value() returns a negative error code on failure - fix the check accordingly. Fixes: d2477b5cc8ca ("[POWERPC] bootwrapper: Add a firmware-independent simpleboot target.") Signed-off-by: Thorsten Blum Reviewed-by: Ritesh Harjani (IBM) Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20260702211554.56923-4-thorsten.blum@linux.dev Signed-off-by: Sasha Levin

powerpc/addnote: Fix overflow on 32-bit builds

2026-01-02T11:57:00+00:00

[ Upstream commit 825ce89a3ef17f84cf2c0eacfa6b8dc9fd11d13f ] The PUT_64[LB]E() macros need to cast the value to unsigned long long like the GET_64[LB]E() macros. Caused lots of warnings when compiled on 32-bit, and clobbered addresses (36-bit P4080). Signed-off-by: Ben Collins Reviewed-by: Christophe Leroy Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/2025042122-mustard-wrasse-694572@boujee-and-buff Signed-off-by: Sasha Levin

arch/powerpc: Remove support for older GCC and binutils

2025-09-06T10:20:42+00:00

Commit 118c40b7b503 ("kbuild: require gcc-8 and binutils-2.30") raised minimum 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

powerpc: Replace ASSEMBLY with ASSEMBLER in non-uapi headers

2025-09-01T07:53:29+00:00

While the GCC and Clang compilers already define __ASSEMBLER__ automatically when compiling assembler code, __ASSEMBLY__ is a macro that only gets defined by the Makefiles in the kernel. This is bad since macros starting with two underscores are names that are reserved by the C language. It can also be very confusing for the developers when switching between userspace and kernelspace coding, or when dealing with uapi headers that rather should use __ASSEMBLER__ instead. So let's standardize now on the __ASSEMBLER__ macro that is provided by the compilers. This is almost a completely mechanical patch (done with a simple "sed -i" statement), apart from tweaking two comments manually in arch/powerpc/include/asm/bug.h and arch/powerpc/include/asm/kasan.h (which did not have proper underscores at the end) and fixing a checkpatch error about spaces in arch/powerpc/include/asm/spu_csa.h. Signed-off-by: Thomas Huth Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250801082007.32904-3-thuth@redhat.com

powerpc/boot/install.sh: Fix shellcheck warnings

2025-08-20T08:35:18+00:00

Fix shellcheck warning such as "Double quote to prevent globbing and word splitting." and Use $(...) notation instead of legacy backticks `...`. Tested-by: Venkat Rao Bagalkote Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250518044107.39928-4-maddy@linux.ibm.com

powerpc: use always-y instead of extra-y in Makefiles

2025-08-20T08:32:13+00:00

The extra-y syntax is planned for deprecation because it is similar to always-y. When building the boot wrapper, always-y and extra-y are equivalent. Use always-y instead. In arch/powerpc/kernel/Makefile, I added ifdef KBUILD_BUILTIN to keep the current behavior: prom_init_check is skipped when building only modular objects. Signed-off-by: Masahiro Yamada Acked-by: Michael Ellerman Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250602163302.478765-1-masahiroy@kernel.org

powerpc/microwatt: Correct ISA version number in device tree

2025-06-23T04:26:28+00:00

The kernel uses 3100 to indicate ISA version 3.1, not 3010, so fix the Microwatt device tree to use 3100. Signed-off-by: Paul Mackerras Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/aB6taMDWvJwOl9xj@bruin

powerpc: dts: mpc8315erdb: Add GPIO controller node

2025-06-13T07:02:21+00:00

The MPC8315E SoC and variants have a GPIO controller at IMMR + 0xc00. This node was previously missing from the device tree. Signed-off-by: J. Neuschäfer Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250611-mpc-gpio-v1-1-02d1f75336e2@posteo.net