Motorola CPCI-6020 manual Debugger Commands, Firmware Using PPCBug, 110

Firmware Using PPCBug

33.Executes the configured boot routine, either ROMboot, Autoboot or Network Autoboot.

34.Executes the user interface (displays the PPC-Bug>or PPC-Diag>prompt).

5.6Using PPCBug

PPCBug is command-driven. It performs its various operations in response to commands entered at the keyboard. When the PPC-Bugprompt appears on the screen, the debugger is ready to accept debugger commands. When the PPC-Diagprompt appears on the screen, the debugger is ready to accept diagnostic commands. To change from one mode to the other, enter SD.

Keyboard entries are stored in an internal buffer and only execute after the Return or Enter key is pressed. This feature provides time to correct entry errors, if necessary, with the control characters described in the PPCBug Firmware Package User’s Manual.

After the debugger executes the command, the prompt reappears. However, if the command causes execution of user target code (for example GO) then control may or may not return to the debugger, depending on what the user program does. For example, if a breakpoint is specified, control returns to the debugger when the breakpoint is encountered during execution of the user program. However, the user program can return to the debugger by means of the System Call Handler routine RETURN. For more about this, refer to the GD, GO and GT command descriptions in the PPCBug Firmware Package User’s Manual.

A debugger command is made up of the following parts:

zThe command name, either uppercase or lowercase (e.g., MD or md)

zAny required arguments, as specified by command

zAt least one space before the first argument. Precede all other arguments with either a space or comma

zOne or more options, precede an option or a string of options with a semicolon (;). If no option is entered, the command’s default option conditions are used

5.7Debugger Commands

The individual debugger commands are listed in the following table. The commands are described in detail in the PPCBug Firmware Package User’s Manual.

You can list all the available debugger commands by entering the Help (HE) command alone. You can view the syntax (description) for a particular command by entering HE followed by a space, followed by the particular command mnemonic (as listed below), followed by a carriage return. Remember that help is now available on both the BUG and DIAG side. In addition, issuing help on a DIAG test category gives more information about the tests in that category.

110 CPCI-6020 CompactPCI Single Board Computer Installation and Use (6806800A51C)