kernel/git/stable/linux.git/arch/mips/boot, branch linux-5.12.y

mips: disable branch profiling in boot/decompress.o

2021-07-20T14:02:28+00:00

[ Upstream commit 97e488073cfca0eea84450169ca4cbfcc64e33e3 ] Use DISABLE_BRANCH_PROFILING for arch/mips/boot/compressed/decompress.o to prevent linkage errors. mips64-linux-ld: arch/mips/boot/compressed/decompress.o: in function `LZ4_decompress_fast_extDict': decompress.c:(.text+0x8c): undefined reference to `ftrace_likely_update' mips64-linux-ld: decompress.c:(.text+0xf4): undefined reference to `ftrace_likely_update' mips64-linux-ld: decompress.c:(.text+0x200): undefined reference to `ftrace_likely_update' mips64-linux-ld: decompress.c:(.text+0x230): undefined reference to `ftrace_likely_update' mips64-linux-ld: decompress.c:(.text+0x320): undefined reference to `ftrace_likely_update' mips64-linux-ld: arch/mips/boot/compressed/decompress.o:decompress.c:(.text+0x3f4): more undefined references to `ftrace_likely_update' follow Fixes: e76e1fdfa8f8 ("lib: add support for LZ4-compressed kernel") Reported-by: kernel test robot Signed-off-by: Randy Dunlap Cc: Thomas Bogendoerfer Cc: linux-mips@vger.kernel.org Cc: Kyungsik Lee Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin

mips: always link byteswap helpers into decompressor

2021-07-20T14:02:28+00:00

[ Upstream commit cddc40f5617e53f97ef019d5b29c1bd6cbb031ec ] My series to clean up the unaligned access implementation across architectures caused some mips randconfig builds to fail with: mips64-linux-ld: arch/mips/boot/compressed/decompress.o: in function `decompress_kernel': decompress.c:(.text.decompress_kernel+0x54): undefined reference to `__bswapsi2' It turns out that this problem has already been fixed for the XZ decompressor but now it also shows up in (at least) LZO and LZ4. From my analysis I concluded that the compiler could always have emitted those calls, but the different implementation allowed it to make otherwise better decisions about not inlining the byteswap, which results in the link error when the out-of-line code is missing. While it could be addressed by adding it to the two decompressor implementations that are known to be affected, but as this only adds 112 bytes to the kernel, the safer choice is to always add them. Fixes: c50ec6787536 ("MIPS: zboot: Fix the build with XZ compression on older GCC versions") Fixes: 0652035a5794 ("asm-generic: unaligned: remove byteshift helpers") Link: https://lore.kernel.org/linux-mm/202106301304.gz2wVY9w-lkp@intel.com/ Link: https://lore.kernel.org/linux-mm/202106260659.TyMe8mjr-lkp@intel.com/ Link: https://lore.kernel.org/linux-mm/202106172016.onWT6Tza-lkp@intel.com/ Link: https://lore.kernel.org/linux-mm/202105231743.JJcALnhS-lkp@intel.com/ Signed-off-by: Arnd Bergmann Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin

MIPS: CI20: Reduce clocksource to 750 kHz.

2021-07-19T08:01:12+00:00

[ Upstream commit 23c64447b3538a6f34cb38aae3bc19dc1ec53436 ] The original clock (3 MHz) is too fast for the clocksource, there will be a chance that the system may get stuck. Reported-by: Nikolaus Schaller Tested-by: Nikolaus Schaller # on CI20 Signed-off-by: 周琰杰 (Zhou Yanjie) Acked-by: Paul Cercueil Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin

mips: bmips: fix syscon-reboot nodes

2021-05-14T08:52:48+00:00

[ Upstream commit cde58b861a1d365568588adda59d42351c0c4ad3 ] Commit a23c4134955e added the clock controller nodes, incorrectly changing the syscon-reboot nodes addresses. Fixes: a23c4134955e ("MIPS: BMIPS: add clock controller nodes") Signed-off-by: Álvaro Fernández Rojas Acked-by: Florian Fainelli Signed-off-by: Thomas Bogendoerfer Signed-off-by: Sasha Levin

MIPS: boot/compressed: Copy DTB to aligned address

2021-03-08T10:49:47+00:00

Since 5.12-rc1, the Device Tree blob must now be properly aligned. Therefore, the decompress routine must be careful to copy the blob at the next aligned address after the kernel image. This commit fixes the kernel sometimes not booting with a Device Tree blob appended to it. Fixes: 79edff12060f ("scripts/dtc: Update to upstream version v1.6.0-51-g183df9e9c2b9") Signed-off-by: Paul Cercueil Acked-by: Rob Herring Signed-off-by: Thomas Bogendoerfer

Merge tag 'mips_5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

2021-02-21T21:18:26+00:00

Pull MIPS updates from Thomas Bogendoerfer: - added support for Nintendo N64 - added support for Realtek RTL83XX SoCs - kaslr support for Loongson64 - first steps to get rid of set_fs() - DMA runtime coherent/non-coherent selection cleanup - cleanups and fixes * tag 'mips_5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (98 commits) Revert "MIPS: Add basic support for ptrace single step" vmlinux.lds.h: catch more UBSAN symbols into .data MIPS: kernel: Drop kgdb_call_nmi_hook MAINTAINERS: Add git tree for KVM/mips MIPS: Use common way to parse elfcorehdr MIPS: Simplify EVA cache handling Revert "MIPS: kernel: {ftrace,kgdb}: Set correct address limit for cache flushes" MIPS: remove CONFIG_DMA_PERDEV_COHERENT MIPS: remove CONFIG_DMA_MAYBE_COHERENT driver core: lift dma_default_coherent into common code MIPS: refactor the runtime coherent vs noncoherent DMA indicators MIPS/alchemy: factor out the DMA coherent setup MIPS/malta: simplify plat_setup_iocoherency MIPS: Add basic support for ptrace single step MAINTAINERS: replace non-matching patterns for loongson{2,3} MIPS: Make check condition for SDBBP consistent with EJTAG spec mips: Replace lkml.org links with lore Revert "MIPS: microMIPS: Fix the judgment of mm_jr16_op and mm_jalr_op" MIPS: crash_dump.c: Simplify copy_oldmem_page() Revert "mips: Manually call fdt_init_reserved_mem() method" ...

MIPS: compressed: fix build with enabled UBSAN

2021-02-09T10:15:16+00:00

Commit 1e35918ad9d1 ("MIPS: Enable Undefined Behavior Sanitizer UBSAN") added a possibility to build the entire kernel with UBSAN instrumentation for MIPS, with the exception for VDSO. However, self-extracting head wasn't been added to exceptions, so this occurs: mips-alpine-linux-musl-ld: arch/mips/boot/compressed/decompress.o: in function `FSE_buildDTable_wksp': decompress.c:(.text.FSE_buildDTable_wksp+0x278): undefined reference to `__ubsan_handle_shift_out_of_bounds' mips-alpine-linux-musl-ld: decompress.c:(.text.FSE_buildDTable_wksp+0x2a8): undefined reference to `__ubsan_handle_shift_out_of_bounds' mips-alpine-linux-musl-ld: decompress.c:(.text.FSE_buildDTable_wksp+0x2c4): undefined reference to `__ubsan_handle_shift_out_of_bounds' mips-alpine-linux-musl-ld: arch/mips/boot/compressed/decompress.o: decompress.c:(.text.FSE_buildDTable_raw+0x9c): more undefined references to `__ubsan_handle_shift_out_of_bounds' follow Add UBSAN_SANITIZE := n to mips/boot/compressed/Makefile to exclude it from instrumentation scope and fix this issue. Fixes: 1e35918ad9d1 ("MIPS: Enable Undefined Behavior Sanitizer UBSAN") Cc: stable@vger.kernel.org # 5.0+ Signed-off-by: Alexander Lobakin Signed-off-by: Thomas Bogendoerfer

mips: dts: Add support for Cisco SG220-26 switch

2021-02-04T20:54:20+00:00

Signed-off-by: Bert Vermeulen Signed-off-by: Thomas Bogendoerfer

Add support for Realtek RTL838x/RTL839x switch SoCs

2021-02-04T19:17:54+00:00

The RTL838x/839x family of SoCs are Realtek switches with an embedded MIPS core. * RTL838x - 500MHz 4kce single core - 1Gbit ports and L2 features * RTL839x - 700MHz 34Kc single core - 1Gbit ports and L2 features These switches, depending on the exact part number, will have anywhere between 8 and 52 ports. The MIPS core is wired to a switch cpu port which has a tagging feature allowing us to make use of the DSA subsystem. The SoCs are somewhat basic in certain areas, getting better with more advanced features on newer series. The switch functionality is MMIO-mapped via a large MFD region. The SoCs have the following peripherals * ethernet * switch * uart - ns16550a * spi-flash interface * gpio * wdt * led The code was derived from various vendor SDKs based on Linux v2.6 kernels. This patchset allows us to boot RTL838x/RTL839x units with basic support. Most of the other drivers are already written and functional, and work to get them upstream is already in progress. Signed-off-by: Birger Koblitz Signed-off-by: Bert Vermeulen Signed-off-by: John Crispin Signed-off-by: Sander Vanheule Signed-off-by: Thomas Bogendoerfer

MIPS: zboot: Avoid endless loop in clear BSS.

2021-01-07T16:12:14+00:00

Commit 2ee1503e546f ("MIPS: zboot: head.S clean up"). After .noreorder removed, clear BSS fall into endless loop. The bne instruction will add nop to the delay slot at compile time. So a0 register will not increment by 4. Fix it and clear BSS from _edata to (_end - 1). Signed-off-by: Jinyang He Reviewed-by: Jiaxun Yang Signed-off-by: Thomas Bogendoerfer