ACPI_NO_ACPI_ENABLE
if (!(Flags & ACPI_NO_ACPI_ENABLE))
acpi_init_level |= (ACPI_NO_ACPI_ENABLE | ACPI_NO_HANDLER_INIT);
if ((!acpica_enable) || (acpi_init_level & ACPI_NO_ACPI_ENABLE))