Hi Jiaxun,
On Sun, 19 May 2024 at 15:56, Jiaxun Yang jiaxun.yang@flygoat.com wrote:
Hi all,
Apologies for taking time to review, got a lot in my backlog
This series enabled big endian support for arm64, enabled qemu-arm board for arm64be and slightly adjusted our Kconfig handling on endianness.
In practical I think most Arm SoCs do support little endian only, for those SoCs with big endian support they are usually bi-endian and expected bootloader in little endian. The only big-endian only Arm SoC I know is a network processor from ZTE ZXIC, I doubt if upstream U-Boot will ever support it.
However enabling arm64be can enable us to take more care on big endian targets, given that arm64 is the most feature rich arch in U-Boot, we can run more test on big endian systems.
Boot tested on qemu.
This is not a nak, but I dont see why we should have the extra maintenace burden if people don't use it.
I'd like more feedback from the community on whether this is useful or not
Cheers /Ilias
Please review.
Thanks
Signed-off-by: Jiaxun Yang jiaxun.yang@flygoat.com
Jiaxun Yang (13): tools/relocate-rela: Fix Big Endian elf64 handling arm: Don't select ARM_ASM_UNIFIED on arm64 arm: Fix assembler.h for arm64 arm: Introduce CPU_LE/CPU_BE macros arm: Define endian related bits in system.h armv8: Big Endian enablement for compiler and linker arm: Perform byte swap for read and write in io.h armv8: Allow endianness to be setted at reset entry armv8: spin_table: Perform byte swap for jump address lib/crc32: Don't perform byte swap for arm64 crc32b Kconfig: Unify endian support option config: Use CONFIG_SYS_BIG_ENDIAN in code whenever possible qemu-arm: Big endian enablement for arm64
Makefile | 2 +- arch/Kconfig | 34 ++++++++--- arch/arc/include/asm/arc-bcr.h | 10 +-- arch/arm/Kconfig | 3 +- arch/arm/config.mk | 14 +++++ arch/arm/cpu/armv8/Kconfig | 9 +++ .../arm/cpu/armv8/linux-kernel-image-header-vars.h | 4 +- arch/arm/cpu/armv8/spin_table_v8.S | 2 + arch/arm/cpu/armv8/start.S | 26 ++++++++ arch/arm/cpu/armv8/u-boot-spl.lds | 6 ++ arch/arm/cpu/armv8/u-boot.lds | 4 ++ arch/arm/include/asm/assembler.h | 25 ++++++++ arch/arm/include/asm/io.h | 12 ++-- arch/arm/include/asm/system.h | 3 + arch/arm/lib/elf_aarch64_efi.lds | 7 +++ arch/mips/Kconfig | 20 +++--- arch/mips/mach-ath79/Kconfig | 8 +-- arch/mips/mach-bmips/Kconfig | 20 +++--- arch/mips/mach-jz47xx/Kconfig | 2 +- arch/mips/mach-mscc/Kconfig | 4 +- arch/mips/mach-pic32/Kconfig | 2 +- board/emulation/qemu-arm/Kconfig | 2 + board/emulation/qemu-arm/MAINTAINERS | 1 + configs/qemu_arm64be_defconfig | 71 ++++++++++++++++++++++ doc/board/emulation/qemu-arm.rst | 7 ++- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 2 +- lib/crc32.c | 3 +- scripts/Makefile.build | 2 +- scripts/Makefile.lib | 3 +- tools/relocate-rela.c | 40 +++++++----- 30 files changed, 271 insertions(+), 77 deletions(-)
base-commit: 3be9f399e911cfc437a37ac826441f1d96da1c9b change-id: 20240518-aarch64-be-1ec99cf7f28b
Best regards,
Jiaxun Yang jiaxun.yang@flygoat.com