ACPI ged is used for power management on LoongArch virt platform, in general it is parsed from acpi table. However if system boot directly from elf kernel, no UEFI bios is provided and acpi table cannot be used also.
Here acpi ged pm register is exposed with FDT table, it is compatbile with syscon method in FDT table, only that acpi ged pm register is accessed with 8-bit mode, rather with 32-bit mode. --- v2 ... v3: 1. Keep orginal macro name ACPI_GED_SLP_TYP_S5 unchanged, renaming ACPI_GED_SLP_TYPx_y with ACPI_GED_SLP_TYP_y 2. Add acpi chapter reference with notation v1 ... v2: 1. Modify name of macro for acpi ged register from ACPI spec, and also add comments for macro definition. --- Bibo Mao (2): acpi: ged: Add macro for acpi sleep control register hw/loongarch/virt: Add FDT table support with acpi ged pm register hw/acpi/generic_event_device.c | 6 ++-- hw/loongarch/virt.c | 39 ++++++++++++++++++++++++++ include/hw/acpi/generic_event_device.h | 7 +++-- 3 files changed, 47 insertions(+), 5 deletions(-) base-commit: 2b81c046252fbfb375ad30632362fc16e6e22bd5 -- 2.39.3