[PATCH v4 00/18] Introduce ACPI for ARM64 based on ACPI 5.1

[Hanjun Guo]

ACPI 5.1 has been released and now be freely available for
download [1]. It fixed some major gaps to run ACPI on ARM,
this patch just follow the ACPI 5.1 spec and prepare the
code to run ACPI on ARM64.

ACPI 5.1 has some major changes for the following tables and
method which are essential for ARM platforms:
1) MADT table updates.
2) FADT updates for PSCI
3) GTDT

This patch set is the ARM64 ACPI core patches covered MADT, FADT
and GTDT, platform board specific drivers are not covered by this
patch set, but we provided drivers for Juno to boot with ACPI only
for review purpose.

We first introduce acpi.c and its related head file which are needed
by ACPI core, and then get RSDP to extract all the ACPI boot-time tables.
When all the boot-time tables (FADT, MADT, GTDT) are ready, then
parse them to init the sytem when booted. Specifically, 
a) we use FADT to init PSCI and use PSCI to boot SMP;
b) Use MADT for GIC init and SMP init;
c) GTDT for arch timer init.

This patch set is based on 3.17-rc4 and was tested by Graeme on Juno
and FVP base model boot with ACPI only OK, if you want to test them,
you can pull from acpi-5.1-v4 branch in leg/acpi repo:
git://git.linaro.org/leg/acpi/acpi.git

Updates since v3:
 - Compile out sleep.c on ARM64 when ACPI enabled
 - refactor the GIC init code to address the comments from Marc and
   Arnd
 - refactor the SMP init code to fix some logic problem when PSCI is
   not present, also address some of Grant and Lorenzo's comments
 - reorder the patch series and move ACPI table changes to the front
   of patch set
 - rebase on top of 3.17-rc4

Updates since v2:
 - Refactor the code to make SMP/PSCI init with less sperated init
   path by Tomasz
 - make ACPI depend on EXPERT
 - Address lots of comments from Catalin, Sudeep, Geoff
 - Add Juno device ACPI driver patches for review

Updates since v1:
 - Set ACPI default off on ARM64 suggested by Olof;
 - Rebase the patch set on top of linux-next branch/linux-pm tree which
   includes the ACPICA for full ACPI 5.1 support.
 - Update the document as suggested;
 - Adress lots of comments from Mark, Sudeep, Randy, Naresh, Olof, Geoff
   and more...

[1]: http://www.uefi.org/sites/default/files/resources/ACPI_5_1release.pdf

Al Stone (3):
  ARM64 / ACPI: Get RSDP and ACPI boot-time tables
  ARM64 / ACPI: Introduce early_param for "acpi"
  ARM64 / ACPI: Select ACPI_REDUCED_HARDWARE_ONLY if ACPI is enabled on
    ARM64

Ashwin Chaugule (1):
  ACPI / table: Add new function to get table entries

Graeme Gregory (4):
  ARM64 / ACPI: Introduce sleep-arm.c
  ARM64 / ACPI: If we chose to boot from acpi then disable FDT
  ARM64 / ACPI: Enable ARM64 in Kconfig
  Documentation: ACPI for ARM64

Hanjun Guo (8):
  ARM64: Move the init of cpu_logical_map(0) before
    unflatten_device_tree()
  ARM64 / ACPI: Make PCI optional for ACPI on ARM64
  ARM64 / ACPI: Parse FADT table to get PSCI flags for PSCI init
  ACPI / table: Print GIC information when MADT is parsed
  ARM64 / ACPI: Parse MADT for SMP initialization
  ACPI / processor: Make it possible to get CPU hardware ID via GICC
  ARM64 / ACPI: Introduce ACPI_IRQ_MODEL_GIC and register device's gsi
  ARM64 / ACPI: Parse GTDT to initialize arch timer

Tomasz Nowicki (2):
  ACPI / table: Count matched and successfully parsed entries without
    specifying max entries
  ARM64 / ACPI: Add GICv2 specific ACPI boot support

 Documentation/arm64/arm-acpi.txt     |  218 +++++++++++++++++++++
 Documentation/kernel-parameters.txt  |    3 +-
 arch/arm64/Kconfig                   |    3 +
 arch/arm64/include/asm/acenv.h       |   18 ++
 arch/arm64/include/asm/acpi.h        |   96 ++++++++++
 arch/arm64/include/asm/cpu_ops.h     |    1 +
 arch/arm64/include/asm/pci.h         |   11 ++
 arch/arm64/include/asm/psci.h        |    3 +-
 arch/arm64/include/asm/smp.h         |    5 +-
 arch/arm64/kernel/Makefile           |    1 +
 arch/arm64/kernel/acpi.c             |  351 ++++++++++++++++++++++++++++++++++
 arch/arm64/kernel/cpu_ops.c          |    4 +-
 arch/arm64/kernel/psci.c             |   78 +++++---
 arch/arm64/kernel/setup.c            |   23 ++-
 arch/arm64/kernel/smp.c              |    2 +-
 arch/arm64/kernel/time.c             |    7 +
 drivers/acpi/Kconfig                 |    6 +-
 drivers/acpi/Makefile                |    6 +-
 drivers/acpi/bus.c                   |    3 +
 drivers/acpi/internal.h              |    5 +
 drivers/acpi/processor_core.c        |   37 ++++
 drivers/acpi/sleep-arm.c             |   28 +++
 drivers/acpi/tables.c                |  115 +++++++++--
 drivers/clocksource/arm_arch_timer.c |  117 ++++++++++--
 drivers/irqchip/irq-gic.c            |  106 ++++++++++
 drivers/irqchip/irqchip.c            |    3 +
 include/linux/acpi.h                 |    5 +
 include/linux/clocksource.h          |    6 +
 include/linux/irqchip/arm-gic-acpi.h |   31 +++
 include/linux/pci.h                  |   37 +++-
 30 files changed, 1238 insertions(+), 91 deletions(-)
 create mode 100644 Documentation/arm64/arm-acpi.txt
 create mode 100644 arch/arm64/include/asm/acenv.h
 create mode 100644 arch/arm64/include/asm/acpi.h
 create mode 100644 arch/arm64/include/asm/pci.h
 create mode 100644 arch/arm64/kernel/acpi.c
 create mode 100644 drivers/acpi/sleep-arm.c
 create mode 100644 include/linux/irqchip/arm-gic-acpi.h

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1.7.9.5