Documentation/arm64/acpi_object_usage.rst

8 If a section number is used, it refers to a section number in the ACPI
9 specification where the object is defined.  If "Signature Reserved" is used,
68        License has changed and should be usable.  Optional if used instead
103        Optional, not currently supported, but could be used on ARM if and
138        provided, the Global Lock will NOT be used since it is not part of
153        used, not FIRMWARE_CTRL.
155        If PSCI is used (as is recommended), make sure that ARM_BOOT_ARCH is
159        For the DSDT that is also required, the X_DSDT field is to be used,
182        used on arm64.
230        should be used (types 0xA - 0xF).
313        on arm64, and will not be used.  If provided, it will be ignored.
349        Optional, but if used, only the GICC Affinity structures are read.
423        Optional, used only by Xen at present.
434 The expectations on individual ACPI objects that are likely to be used are
436 should be used as needed for a particular platform or particular subsystem,
451                        attributes; the presence of an SMMU can be used to
466 _CSD   8.4.2.2         Use as needed, used only in conjunction with _CST.
471 _DDN   6.1.4           This field can be used for a device name.  However,
475 _DSD   6.2.5           To be used with caution.  If this object is used, try
482                        device properties are used.  A driver will not be
493 \_GL   5.7.1           This object is not to be used in hardware reduced
494                        mode, and therefore should not be used on arm64.
504 		       though _CID and _CLS may also be used.
523                        command line parameter acpi_os=<string> can be used
528                        device (e.g., \_SB.DEV0._OSC), or both.  When used
530                        the ACPI specification are allowed.  When used as
532                        using _DSD MUST be used to create an _OSC definition;
540 		       concerned, _OSI is not to be used to determine what
541 		       sort of system is being used or what functionality
542 		       is provided.  The _OSC method is to be used instead.
546 \_PIC  5.8.1           The method should not be used.  On arm64, the only
564 		       ACPI0010) on arm64.  This should only be used in
601 profile used by arm64.  Since there are no GPE blocks defined for use on ARM
606 new feature in the ACPI 6.1 specification.  Either - or both - can be used
630 object must correspond to processor IDs used in the MADT.
632 It is recommended that CPPC (8.4.5) be used as the primary model for processor
648 GetMemoryMap() boot service is the only mechanism that will be used.
655 APEI requires the equivalent of an SCI and an NMI on ARMv8.  The SCI is used
658 used to indicate fatal errors that cannot be corrected, and require immediate
665 possible.  This implies some caution must be used since there could be