[PATCH 00/24] Add basic ACPI support for RISC-V

[Sunil V L]

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