Processor Local Bus Functional Model Toolkit User's Manual

Chapter 6. PLB Bus Functional Language
The bus functional models in the PLB model toolkit can be controlled through command files which
contain information on how to initiate and respond to bus cycles. The command files also contain
model configuration information. The general form of a bus functional language command is specified
as follows: command (parameters)
Parameters define attributes for bus cycles and configurations. A bus command may have more than
one parameter and have the following format: parameter = value. A parameter value may be either a
scalar or enumerated type (that is, a string).
Note 1: Bus functional language (BFL) comments are delineated using the “--” or “//” string. All
characters after the comment delineator are ignored by the BFL parser. An end of line
character terminates a comment.
Note 2: Bus functional language is case insensitive.
Note 3: A * denotes an optional parameter, otherwise the parameter is required.
Note 4: There is no restriction on the order in which parameters may be specified within a command.
Note 5: If multiple parameters are specified for the same command, they must be separated by
commas.
6.1 BFM Device Configuration Commands
This section discusses set_device (), path = [string], and device_type = [string] configuration
commands.
6.1.1 Set_Device () Command
The set_device command selects a model to initialize. Within a BFL file (test case), there may be only
one set_device () command used per model initialization.
• Path = [String]
The path = [string] specifies the path of the model within the test bench hierarchy. The commands
following the set_device command are used to initialize the specified device. Additional set_device
commands are used to specify the initialization of other devices.
• Device_Type = [String]
The device_type = [string] specifies the type of model being initialized. The valid strings for this
toolkit are PLB_master, PLB_slave, or PLB_monitor. Any mismatch in the device_type parameter
and the model being initialized will cause an initialization error.
Example: set_device(path=/plb_complex/m0,device_type=plb_master)
6.2 PLB Alias Commands
This section discusses set_alias () and name = value alias commands.
Version 4.9.2 PLB Bus Functional Language 29