This RFC series based on discussion [1] to show how we may unleash the powerfulness of ACPI on the board, which initially didn't support it, via U-Boot.
The series is highly experimental, though I'm using it on daily basis since my main work on ACPI pin control glue layer.
More information is available on [2].
Note, I dunno the split of DSL pieces is fully correct since we need to understand the difference between SoC, platform, and board terms. Even though some stuff here declared under 'tangier' folder it's related to Intel Merrifield platform (like Wi-Fi chip connected to SDIO port of Intel Tangier). Because of some restrictions of ACPI language / interpreter I may not split some of those parts. Thus, it needs to be revisited.
P.S. It would be nice if someone who possess the board can check and test this independently.
[1]: https://lists.denx.de/pipermail/u-boot/2017-August/303997.html [2]: https://edison.internet-share.com/wiki/ACPI
Andy Shevchenko (2): x86: tangier: Enable ACPI support for Intel Tangier x86: edison: Bring ACPI minimal support to the board
arch/x86/cpu/tangier/Makefile | 1 + arch/x86/cpu/tangier/acpi.c | 86 ++++++ .../include/asm/arch-tangier/acpi/global_nvs.asl | 16 ++ .../x86/include/asm/arch-tangier/acpi/platform.asl | 31 +++ .../include/asm/arch-tangier/acpi/southcluster.asl | 306 +++++++++++++++++++++ arch/x86/include/asm/arch-tangier/global_nvs.h | 22 ++ board/intel/edison/.gitignore | 3 + board/intel/edison/Kconfig | 6 + board/intel/edison/Makefile | 1 + board/intel/edison/dsdt.asl | 13 + include/configs/edison.h | 3 + 11 files changed, 488 insertions(+) create mode 100644 arch/x86/cpu/tangier/acpi.c create mode 100644 arch/x86/include/asm/arch-tangier/acpi/global_nvs.asl create mode 100644 arch/x86/include/asm/arch-tangier/acpi/platform.asl create mode 100644 arch/x86/include/asm/arch-tangier/acpi/southcluster.asl create mode 100644 arch/x86/include/asm/arch-tangier/global_nvs.h create mode 100644 board/intel/edison/.gitignore create mode 100644 board/intel/edison/dsdt.asl