Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
19.6.81 Memory32Fixed (Memory Resource Descriptor Macro)
Syntax
Memory32Fixed (ReadAndWrite, AddressBase, RangeLength, DescriptorName)
Arguments
ReadAndWrite specifies whether or not the memory region is read-only (ReadOnly) or read/write
(ReadWrite). If nothing is specified, then ReadWrite is assumed. The 1-bit field
DescriptorName._RW is automatically created to refer to this portion of the resource descriptor,
where ‘1’ is ReadWrite and ‘0’ is ReadOnly.
AddressBase evaluates to a 32-bit integer that specifies the base address of the memory range. The
32-bit field DescriptorName. _BAS is automatically created to refer to this portion of the resource
descriptor.
RangeLength evaluates to a 32-bit integer that specifies the total number of bytes decoded in the
memory range. The 32-bit field DescriptorName. _LEN is automatically created to refer to this
portion of the resource descriptor.
DescriptorName is an optional argument that specifies a name for an integer constant that will be
created in the current scope that contains the offset of this resource descriptor within the current
resource template buffer. The predefined descriptor field names may be appended to this name to
access individual fields within the descriptor via the Buffer Field operators.
Description
The Memory32Fixed macro evaluates to a buffer which contains a 32-bit memory descriptor, which
describes a fixed range of memory addresses. The format of the fixed 32-bit memory descriptor can
be found in 32-Bit Fixed Memory Range Descriptor (page 353). The macro is designed to be used
inside of a ResourceTemplate (page 882).
19.6.82 Method (Declare Control Method)
Syntax
Method (MethodName, NumArgs, SerializeRule, SyncLevel, ReturnType, ParameterTypes)
{TermList}
Arguments
MethodName is evaluated as a Namestring data type.
NumArgs is optional and is the required number of arguments to be passed to the method, evaluated
as an Integer data type. If not specified, the default value is zero arguments. Up to 7 arguments may
be passed to a method. These arguments may be referenced from within the method as Arg0 through
Arg6.
SerializeRule is optional and is a flag that defines whether the method is serialized or not and is one
of the following: Serialized or NotSerialized. A method that is serialized cannot be reentered by
additional threads. If not specified, the default is NotSerialized.
SyncLevel is optional and specifies the synchronization level for the method (0 – 15). If not
specified, the default sync level is zero.
862 April, 2015 Version 6.0