This series adds the basic ACPI support for the RISC-V virt machine. Currently only RINTC interrupt controller specification is approved by the UEFI forum. External interrupt controller support in ACPI is in progress.
The basic infrastructure changes are mostly leveraged from ARM. This adds support for RINTC and RHCT tables as specified in below ECR links which are approved by UEFI forum. RINTC - https://drive.google.com/file/d/1R6k4MshhN3WTT-hwqAquu5nX6xSEqK2l/view RHCT - https://drive.google.com/file/d/1nP3nFiH4jkPMp6COOxP6123DCZKR-tia/view These changes are also available @ https://github.com/vlsunil/qemu/tree/acpi_b1_us_review_V4 Changes since V3: 1) Added back acpi_align_size() wrapper as per Drew's feedback 2) Updated RB tags Changes since V2: 1) Squashed commits and updated commit message as per feedback from Daniel. 2) Addressed comments from Drew. 3) Updated tags. Changes since V1: 1) Addressed comments from Bin Meng. 2) Made acpi switch default AUTO similar to other architectures. 3) Re-based and added RB and ACKs. The series is tested using SBI HVC console and initrd. Test instructions: 1) Build Qemu with ACPI support (this series) 2) Build EDK2 as per instructions in https://github.com/vlsunil/riscv-uefi-edk2-docs/wiki/RISC-V-Qemu-Virt-support 3) Build Linux with ACPI support using below branch https://github.com/vlsunil/linux/commits/acpi_b1_us_review_ipi17_V2 after enabling SBI HVC and SBI earlycon options. 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 -smp 16 -m 2G \ -kernel arch/riscv/boot/Image \ -initrd buildroot/output/images/rootfs.cpio \ -append "root=/dev/ram ro console=hvc0 earlycon=sbi" Sunil V L (8): hw/riscv/virt: Add OEM_ID and OEM_TABLE_ID fields hw/riscv/virt: Add a switch to disable ACPI hw/riscv/virt: Add memmap pointer to RiscVVirtState hw/riscv/virt: Enable basic ACPI infrastructure hw/riscv/virt: virt-acpi-build.c: Add RINTC in MADT hw/riscv/virt: virt-acpi-build.c: Add RHCT Table hw/riscv/virt.c: Initialize the ACPI tables MAINTAINERS: Add entry for RISC-V ACPI MAINTAINERS | 18 +- hw/riscv/Kconfig | 1 + hw/riscv/meson.build | 1 + hw/riscv/virt-acpi-build.c | 396 +++++++++++++++++++++++++++++++++++++ hw/riscv/virt.c | 40 ++++ include/hw/riscv/virt.h | 6 + 6 files changed, 456 insertions(+), 6 deletions(-) create mode 100644 hw/riscv/virt-acpi-build.c -- 2.34.1
