The CPU hotplug support has been tested on QEMU, Spike, and SiFive
Unleashed so let's enable it by default in RV32 and RV64 defconfigs.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This adds SiFive drivers to rv32_defconfig, to keep in sync with the
64-bit config. This is useful when testing 32-bit kernel with QEMU
'sifive_u' 32-bit machine.
Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Add jump-label implementation based on the ARM64 version
and add CONFIG_JUMP_LABEL=y to the defconfigs.
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Reviewed-by: Björn Töpel <bjorn.topel@gmail.com>
Tested-by: Björn Töpel <bjorn.topel@gmail.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This tag contains the patches I'd like to target for 5.7. It has a handful of
new features:
* Partial support for the Kendryte K210. There are still a few outstanding
issues that I have patches for, but I don't actually have a board to test
them so they're not included yet.
* SBI v0.2 support.
* Fixes to support for building with LLVM-based toolchains. The resulting
images are known not to boot yet.
This builds and boots for me. There is one merge conflict, it's just a Kconfig
merge issue. I can publish a resolved branch if you'd like.
I don't anticipate a part two, but I'll probably have something early in the
RCs to finish up the K210 support.
-----BEGIN PGP SIGNATURE-----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=P1DO
-----END PGP SIGNATURE-----
Merge tag 'riscv-for-linus-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
"This contains a handful of new features:
- Partial support for the Kendryte K210.
There are still a few outstanding issues that I have patches for,
but I don't actually have a board to test them so they're not
included yet.
- SBI v0.2 support.
- Fixes to support for building with LLVM-based toolchains. The
resulting images are known not to boot yet.
I don't anticipate a part two, but I'll probably have something early
in the RCs to finish up the K210 support"
* tag 'riscv-for-linus-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (38 commits)
riscv: create a loader.bin boot image for Kendryte SoC
riscv: Kendryte K210 default config
riscv: Add Kendryte K210 device tree
riscv: Select required drivers for Kendryte SOC
riscv: Add Kendryte K210 SoC support
riscv: Add SOC early init support
riscv: Unaligned load/store handling for M_MODE
RISC-V: Support cpu hotplug
RISC-V: Add supported for ordered booting method using HSM
RISC-V: Add SBI HSM extension definitions
RISC-V: Export SBI error to linux error mapping function
RISC-V: Add cpu_ops and modify default booting method
RISC-V: Move relocate and few other functions out of __init
RISC-V: Implement new SBI v0.2 extensions
RISC-V: Introduce a new config for SBI v0.1
RISC-V: Add SBI v0.2 extension definitions
RISC-V: Add basic support for SBI v0.2
RISC-V: Mark existing SBI as 0.1 SBI.
riscv: Use macro definition instead of magic number
riscv: Add support to dump the kernel page tables
...
The kconfig select causes build failues for SOC_VIRT config becaus
we are selecting lot of VIRTIO drivers without selecting all required
dependencies.
Better approach is to only select essential drivers from SOC_VIRT
config option and enable required VIRTIO drivers using defconfigs.
Fixes: 759bdc1681 ("RISC-V: Add kconfig option for QEMU virt machine")
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
The SYSCON Reboot and Poweroff drivers can be used on QEMU virt machine
to reboot or poweroff the system hence we select these drivers using
QEMU virt machine kconfig option.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
We have kconfig option for QEMU virt machine so let's enable it
in RV32 and RV64 defconfigs. Also, we remove various VIRTIO configs
from RV32 and RV64 defconfigs because these are now selected by
QEMU virt machine kconfig option.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
According to init/Kconfig:
"sys_sysfs is an obsolete system call no longer supported in libc.
Note that disabling this option is more secure but might break
compatibility with some systems."
This syscall is not required for new architectures. Since the config
defaults to 'y'. Set this to 'n' exlicitly.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Enable more debugging options in the RISC-V defconfigs to help kernel
developers catch problems with patches earlier in the development
cycle.
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
debugfs is broadly useful, so enable it in the RISC-V defconfigs.
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
This patch enables more VIRTIO drivers (such as console, rpmsg, 9p,
rng, etc.) which are usable on KVM RISC-V Guest and Xvisor RISC-V
Guest.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Alexander Graf <graf@amazon.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Update the rv32_defconfig:
- Add 'CONFIG_DEVTMPFS_MOUNT=y' to match the RISC-V defconfig
- Add CONFIG_HW_RANDOM=y and CONFIG_HW_RANDOM_VIRTIO=y to enable
VirtIORNG when running on QEMU
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
This patch enables NO_HZ_IDLE (idle dynamic ticks) and HIGH_RES_TIMERS
(hrtimers) in RV32 and RV64 defconfigs.
Both of the above options are enabled by default for architectures
such as x86, ARM, and ARM64.
The idle dynamic ticks helps use save power by stopping timer ticks
when the system is idle whereas hrtimers is a much improved timer
subsystem compared to the old "timer wheel" based system.
This patch is tested on SiFive Unleashed board and QEMU Virt machine.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
This patch adds rv32_defconfig for 32bit systems. The only
difference between rv32_defconfig and defconfig is that
rv32_defconfig has CONFIG_ARCH_RV32I=y.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Anup Patel