Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
Store (Concatenate (Concatenate (Concatenate (Concatenate
(Concatenate (Concatenate (Concatenate ("", Arg0),
": Unexpected value for "), Arg1), ", "), Arg2),
" at line "), Arg3), Debug)
19.6.102 Processor (Declare Processor)
This Operator is deprecated.
Declare Processors using the Device operator. See Section 19.6.30, "Device (Declare Device
Package)".
Note that this Operator may be required for compatibility with some legacy OSes, and can be used
for that purpose.
Syntax
Processor (ProcessorName, ProcessorID, PBlockAddress, PblockLength) {ObjectList}
Arguments
Declares a named processor object named ProcessorName. Processor opens a name scope. Each
processor is required to have a unique ProcessorID value that is unique from any other ProcessorID
value.
For each processor in the system, the ACPI system firmware declares one processor object in the
namespace anywhere within the \_SB scope. For compatibility with operating systems implementing
ACPI 1.0, the processor object may also be declared under the \_PR scope. An ACPI-compatible
namespace may define Processor objects in either the \_SB or \_PR scope but not both.
PBlockAddress provides the system I/O address for the processors register block. Each processor
can supply a different such address. PBlockLength is the length of the processor register block, in
bytes and is either 0 (for no P_BLK) or 6. With one exception, all processors are required to have the
same PBlockLength. The exception is that the boot processor can have a non-zero PBlockLength
when all other processors have a zero PBlockLength. It is valid for every processor to have a
PBlockLength of 0.
Description
The following block of ASL sample code shows a use of the Processor term.
Processor (
\_PR.CPU0, // Namespace name
1,
0x120, // PBlk system IO address
6 // PBlkLen
) {ObjectList}
The ObjectList is an optional list that may contain an arbitrary number of ASL Objects. Processorspecific
objects that may be included in the ObjectList include _PTC, _CST, _PCT, _PSS, _PPC,
_PSD, _TSD, _CSD, _PDC, _TPC, _TSS, and _OSC. These processor-specific objects can only be
specified when the processor object is declared within the \_SB scope. For a full definition of these
objects, see Section 8, “Processor Configuration and Control.”
874 April, 2015 Version 6.0