diff options
Diffstat (limited to 'src/acpi/acpigen_extern.asl')
| -rw-r--r-- | src/acpi/acpigen_extern.asl | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/acpi/acpigen_extern.asl b/src/acpi/acpigen_extern.asl new file mode 100644 index 0000000000..73d626fbea --- /dev/null +++ b/src/acpi/acpigen_extern.asl @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +/* + * Global ACPI memory region. This region is used for passing information + * between coreboot (aka "the system bios"), ACPI, and the SMI handler. + * Since we don't know where this will end up in memory at ACPI compile time, + * we provide it runtime via NVBx and NVSx variables from acpigen. + */ + +#if CONFIG(ACPI_SOC_NVS) +External (NVB0, IntObj) +External (NVS0, IntObj) +OperationRegion (GNVS, SystemMemory, NVB0, NVS0) +#endif + +#if CONFIG(ACPI_HAS_DEVICE_NVS) +External (NVB1, IntObj) +External (NVS1, IntObj) +OperationRegion (DNVS, SystemMemory, NVB1, NVS1) +#endif |