This patch series enables the basic ACPI infrastructure for RISC-V. Supporting external interrupt controllers is in progress and hence it is tested using polling based HVC SBI console and RAM disk. The series depends on Anup's IPI improvement series. https://github.com/avpatel/linux/commits/riscv_ipi_imp_v17 These changes are available at https://github.com/vlsunil/linux/commits/acpi_b1_us_review_ipi17 Testing: 1) Build Qemu with ACPI support using below branch https://github.com/vlsunil/qemu/tree/acpi_b1_us_review 2) Build EDK2 as per instructions in https://github.com/vlsunil/riscv-uefi-edk2-docs/wiki/RISC-V-Qemu-Virt-support 3) Build Linux after enabling SBI HVC and SBI earlycon CONFIG_RISCV_SBI_V01=y CONFIG_SERIAL_EARLYCON_RISCV_SBI=y CONFIG_HVC_RISCV_SBI=y 4) Build buildroot. Run with below command. qemu-system-riscv64 -nographic \ -drive file=Build/RiscVVirtQemu/RELEASE_GCC5/FV/RISCV_VIRT.fd,if=pflash,format=raw,unit=1 \ -machine virt,acpi=on -smp 16 -m 2G \ -kernel arch/riscv/boot/Image \ -initrd buildroot/output/images/rootfs.cpio \ -append "root=/dev/ram ro console=hvc0 earlycon=sbi" Jisheng Zhang (1): riscv: move sbi_init() earlier before jump_label_init() Sunil V L (23): ACPICA: MADT: Add RISC-V INTC interrupt controller ACPICA: Add structure definitions for RISC-V RHCT RISC-V: ACPI: Add empty headers to enable ACPI core RISC-V: ACPI: Add basic functions to build ACPI core RISC-V: ACPI: Add PCI functions to build ACPI core RISC-V: ACPI: Enable ACPI build infrastructure ACPI: Enable ACPI_PROCESSOR for RISC-V ACPI: OSL: Make should_use_kmap() 0 for RISC-V. ACPI: processor_core: RISC-V: Enable mapping processor to the hartid RISC-V: ACPI: irqchip/riscv-intc: Add ACPI support RISC-V: ACPI: smpboot: Create wrapper smp_setup() RISC-V: ACPI: smpboot: Add ACPI support in smp_setup() RISC-V: ACPI: smpboot: Add function to retrieve the hartid clocksource/timer-riscv: Refactor riscv_timer_init_dt() RISC-V: ACPI: clocksource/timer-riscv: Add ACPI support ACPI: RISC-V: drivers/acpi: Add RHCT related code RISC-V: ACPI: time.c: Add ACPI support for time_init() RISC-V: ACPI: cpufeature: Add ACPI support in riscv_fill_hwcap() RISC-V: ACPI: cpu: Enable cpuinfo for ACPI systems RISC-V: ACPI: Add ACPI initialization in setup_arch() RISC-V: ACPI: Enable ACPI in defconfig MAINTAINERS: Add entry for drivers/acpi/riscv Documentation/kernel-parameters.txt: Add RISC-V for ACPI parameter .../admin-guide/kernel-parameters.txt | 6 +- MAINTAINERS | 7 + arch/riscv/Kconfig | 5 + arch/riscv/configs/defconfig | 4 + arch/riscv/include/asm/acenv.h | 17 ++ arch/riscv/include/asm/acpi.h | 87 +++++++++ arch/riscv/include/asm/cpu.h | 9 + arch/riscv/kernel/Makefile | 3 + arch/riscv/kernel/acpi.c | 178 ++++++++++++++++++ arch/riscv/kernel/cpu.c | 36 +++- arch/riscv/kernel/cpufeature.c | 45 ++++- arch/riscv/kernel/pci.c | 173 +++++++++++++++++ arch/riscv/kernel/setup.c | 21 ++- arch/riscv/kernel/smpboot.c | 99 +++++++++- arch/riscv/kernel/time.c | 25 ++- drivers/acpi/Kconfig | 2 +- drivers/acpi/Makefile | 2 + drivers/acpi/osl.c | 2 +- drivers/acpi/processor_core.c | 28 +++ drivers/acpi/riscv/Makefile | 2 + drivers/acpi/riscv/rhct.c | 93 +++++++++ drivers/clocksource/timer-riscv.c | 88 ++++----- drivers/irqchip/irq-riscv-intc.c | 79 ++++++-- include/acpi/actbl2.h | 69 ++++++- 24 files changed, 994 insertions(+), 86 deletions(-) create mode 100644 arch/riscv/include/asm/acenv.h create mode 100644 arch/riscv/include/asm/acpi.h create mode 100644 arch/riscv/include/asm/cpu.h create mode 100644 arch/riscv/kernel/acpi.c create mode 100644 arch/riscv/kernel/pci.c create mode 100644 drivers/acpi/riscv/Makefile create mode 100644 drivers/acpi/riscv/rhct.c -- 2.38.0
