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, reboot and shutdown from OS. * Support booting a pre-installed Ubuntu distribution via 'zboot' command. * Support ACPI interrupts with SCI only.
Features not supported so far (to make it a complete ACPI solution): * S3 (Suspend to RAM), S4 (Suspend to Disk). * Install and boot Ubuntu 14.04 (or above) from U-Boot with legacy interface. * Install and boot Windows 8.1/10 from U-Boot with legacy interface.
Features that are optional: * ACPI global NVS support. We may need it to simplify ASL code logic if utilizing NVS variables. Most likely we will need this sooner or later. * Dynamic AML bytecodes insertion at run-time. We may need this to support SSDT table generation and DSDT fix up. * SMI support. Since U-Boot is a modern bootloader, we don't want to bring those legacy stuff into U-Boot. ACPI spec allows a system that does not support SMI (a legacy-free system).
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.
Changes in v2: - Change to use IS_ENABLED() - Change commit subject per review comments - Update commit message to mention the reason of adding __packed - Update the commit message per review comments - Change 'orders' to 'order' in the commit subject - Correct wrong indention in acpi_create_madt_lapics() - Update several more places to use u32 in acpi_table.c - Add comments before the 64 byte alignment for FACS - New patch to clean up table header revisions - New patch to return table length in acpi_create_madt_lapics() - Reserve IRQ3 and IRQ4 in the IRQ links to support external SuperIO chipset serial ports - Fix SIO1 and SIO2 interrupt mapping in irqroute.h - Use existing macros in FADT whenever possible - Rename acpi_madt_irq_overrides() to acpi_create_madt_irq_overrides() for consistency, and make it static - Return table length in acpi_create_madt_irq_overrides() so that the code logic in acpi_fill_madt() looks consistent (eg: current += ...) - Update support board list, adding Congatec QEVAL 2.0 & conga-QA3/E3845 - Update ACPI support status in more details: what's supported, what's not supported, what's optional.
Bin Meng (28): 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: Output all errors/warnings/remarks when compiling ASL x86: acpi: Remove unused codes x86: acpi: Various changes to acpi_table.h x86: acpi: Reorder code in acpi_table.h x86: acpi: Remove acpi_create_ssdt_generator() x86: acpi: Change fill_header() x86: acpi: Adjust order in acpi_table.c x86: acpi: Use u32 in table write routines x86: acpi: Align FACS table to a 64 byte boundary x86: acpi: Clean up table header revisions x86: acpi: Add some generic ASL libraries x86: acpi: Return table length in acpi_create_madt_lapics() 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 | 163 +++++++ arch/x86/cpu/irq.c | 30 ++ 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 | 443 ++++++++----------- .../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 | 33 ++ .../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 | 342 +++++++------- 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 | 85 +++- doc/device-tree-bindings/misc/intel,irq-router.txt | 5 + include/configs/x86-common.h | 9 +- scripts/Makefile.lib | 8 +- 52 files changed, 2388 insertions(+), 508 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