x86: Initial ACPI support for Intel BayTrail

This series introduces initial ACPI support for Intel BayTrail.

Advanced Configuration and Power Interface (ACPI) aims to establish industry-standard interfaces enabling OS-directed configuration, power management, and thermal management of mobile, desktop, and server platforms.

Linux can boot without ACPI with "acpi=off" command line parameter, but with ACPI the kernel gains the capabilities to handle power management. For Windows, ACPI is a must-have firmware feature since Windows Vista. CONFIG_GENERATE_ACPI_TABLE is the config option to turn on ACPI support in U-Boot. This requires Intel ACPI compiler to be installed on your host to compile ACPI DSDT table written in ASL format to AML format. You can get the compiler via "apt-get install iasl" if you are on Ubuntu or download the source from acpica website to compile one by yourself.

Current ACPI support in U-Boot is not complete. More features will be added in the future. The status as of today is:

* Support generating RSDT, XSDT, FACS, FADT, MADT, MCFG tables.
* Support one static DSDT table only, compiled by Intel ACPI compiler.
* Support S0/S5 only, no S3/S4 boot path support yet.
* No ACPI global NVS support (this can be optional, but we may need it in the future to simplify ASL code logic when utilizing NVS variables).
* No dynamic AML bytecodes insertion at run-time (this is optional as we can always describe the board in the static way).
* All ACPI interrupts are routed to SCI for OS to handle. No legacy SMI implementation within U-Boot.
* Install Ubuntu from U-Boot plus SeaBIOS does not work.
* Install Windows 8.1/10 from U-Boot plus SeaBIOS does not work.

So far ACPI is enabled on BayTrail based boards. Testing was done by booting a pre-installed Ubuntu 14.04 from a SATA drive. Most devices seem to work correctly and the board can respond a reboot/shutdown command from Ubuntu.

This series is available at u-boot-x86/acpi-working.

Bin Meng (26):
x86: Drop asm/acpi.h
x86: Fix build warning in tables.c when CONFIG_SEABIOS
x86: acpi: Fix compiler warnings in write_acpi_tables()
x86: irq: Reserve IRQ9 for ACPI in PIC mode
x86: irq: Enable SCI on IRQ9
x86: dts: Update to include ACTL register details
acpi: Change build log for ASL files
acpi: Explicitly spell out dsdt.c in the make rule
acpi: Specify U-Boot include path for ASL files
acpi: Do not disable all errors/warnings/remarks when compiling ASL
x86: acpi: Remove unneeded codes
x86: acpi: Various changes to acpi_table.h
x86: acpi: Reorder codes in acpi_table.h
x86: acpi: Remove acpi_create_ssdt_generator()
x86: acpi: Change fill_header()
x86: acpi: Adjust orders in acpi_table.c
x86: acpi: Change table write routine signature to use u32
x86: acpi: Align FACS table to a 64 byte boundary
x86: acpi: Add some generic ASL libraries
x86: baytrail: Add platform ASL files
x86: baytrail: Generate ACPI FADT/MADT tables
x86: baytrail: Enable ACPI table generation for all boards
x86: baytrail: Add .gitignore for ACPI enabled boards
x86: Remove acpi=off boot parameter when ACPI is on
x86: doc: Minor update for accuracy
x86: doc: Document ACPI support

  arch/x86/cpu/baytrail/Makefile                     |   1 +
  arch/x86/cpu/baytrail/acpi.c                       | 162 +++++++
  arch/x86/cpu/irq.c                                 |  29 ++
  arch/x86/cpu/ivybridge/lpc.c                       |   1 -
  arch/x86/cpu/ivybridge/model_206ax.c               |   1 -
  arch/x86/cpu/ivybridge/northbridge.c               |   1 -
  arch/x86/dts/bayleybay.dts                         |   1 +
  arch/x86/dts/conga-qeval20-qa3-e3845.dts           |   1 +
  arch/x86/dts/crownbay.dts                          |   1 +
  arch/x86/dts/galileo.dts                           |   1 +
  arch/x86/dts/minnowmax.dts                         |   1 +
  arch/x86/dts/qemu-x86_q35.dts                      |   2 +
  arch/x86/include/asm/acpi.h                        |  24 -
  arch/x86/include/asm/acpi/debug.asl                | 136 ++++++
  arch/x86/include/asm/acpi/globutil.asl             | 113 +++++
  arch/x86/include/asm/acpi/statdef.asl              |  82 ++++
  arch/x86/include/asm/acpi_table.h                  | 447 ++++++++-----------
  .../include/asm/arch-baytrail/acpi/irq_helper.h    | 111 +++++
  .../include/asm/arch-baytrail/acpi/irqlinks.asl    | 489 +++++++++++++++++++++
  .../include/asm/arch-baytrail/acpi/irqroute.asl    |  48 ++
  arch/x86/include/asm/arch-baytrail/acpi/irqroute.h |  27 ++
  arch/x86/include/asm/arch-baytrail/acpi/lpc.asl    | 121 +++++
  .../include/asm/arch-baytrail/acpi/platform.asl    |  34 ++
  .../include/asm/arch-baytrail/acpi/sleepstates.asl |  13 +
  .../asm/arch-baytrail/acpi/southcluster.asl        | 211 +++++++++
  arch/x86/include/asm/arch-baytrail/acpi/usb.asl    |  34 ++
  arch/x86/include/asm/arch-baytrail/acpi/xhci.asl   |  31 ++
  arch/x86/include/asm/arch-baytrail/device.h        |  74 ++++
  arch/x86/include/asm/arch-baytrail/iomap.h         |  70 +++
  arch/x86/include/asm/arch-baytrail/irq.h           |  86 ++++
  arch/x86/include/asm/irq.h                         |   4 +
  arch/x86/lib/acpi_table.c                          | 311 ++++++-------
  arch/x86/lib/tables.c                              |   1 +
  board/congatec/conga-qeval20-qa3-e3845/.gitignore  |   3 +
  board/congatec/conga-qeval20-qa3-e3845/Makefile    |   1 +
  .../conga-qeval20-qa3-e3845/acpi/mainboard.asl     |  13 +
  board/congatec/conga-qeval20-qa3-e3845/dsdt.asl    |  14 +
  board/intel/bayleybay/.gitignore                   |   3 +
  board/intel/bayleybay/Makefile                     |   1 +
  board/intel/bayleybay/acpi/mainboard.asl           |  11 +
  board/intel/bayleybay/dsdt.asl                     |  14 +
  board/intel/minnowmax/.gitignore                   |   3 +
  board/intel/minnowmax/Makefile                     |   1 +
  board/intel/minnowmax/acpi/mainboard.asl           |  11 +
  board/intel/minnowmax/dsdt.asl                     |  14 +
  configs/bayleybay_defconfig                        |   1 +
  configs/conga-qeval20-qa3-e3845_defconfig          |   1 +
  configs/minnowmax_defconfig                        |   1 +
  doc/README.x86                                     |  76 +++-
  doc/device-tree-bindings/misc/intel,irq-router.txt |   5 +
  include/configs/x86-common.h                       |   9 +-
  scripts/Makefile.lib                               |   8 +-
  52 files changed, 2368 insertions(+), 491 deletions(-)

create mode 100644 arch/x86/cpu/baytrail/acpi.c
delete mode 100644 arch/x86/include/asm/acpi.h
create mode 100644 arch/x86/include/asm/acpi/debug.asl
create mode 100644 arch/x86/include/asm/acpi/globutil.asl create mode 100644 arch/x86/include/asm/acpi/statdef.asl
create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/irq_helper.h create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/irqlinks.asl create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/irqroute.asl create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/irqroute.h create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/lpc.asl create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/platform.asl create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/sleepstates.asl create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/southcluster.asl create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/usb.asl create mode 100644 arch/x86/include/asm/arch-baytrail/acpi/xhci.asl create mode 100644 arch/x86/include/asm/arch-baytrail/device.h create mode 100644 arch/x86/include/asm/arch-baytrail/iomap.h create mode 100644 arch/x86/include/asm/arch-baytrail/irq.h create mode 100644 board/congatec/conga-qeval20-qa3-e3845/.gitignore

create mode 100644 board/congatec/conga-qeval20-qa3-e3845/acpi/mainboard.asl create mode 100644 board/congatec/conga-qeval20-qa3-e3845/dsdt.asl create mode 100644 board/intel/bayleybay/.gitignore
create mode 100644 board/intel/bayleybay/acpi/mainboard.asl create mode 100644 board/intel/bayleybay/dsdt.asl
create mode 100644 board/intel/minnowmax/.gitignore
create mode 100644 board/intel/minnowmax/acpi/mainboard.asl create mode 100644 board/intel/minnowmax/dsdt.asl