Albatron Technology ARM11/Cortex-A8 user manual Multi-Core Support

bdiGDB for GNU Debugger, BDI2000 (ARM11/Cortex-A8) User Manual 47

3.5 Multi-Core Support

The bdiGDB system supports concurrent debugging of up to 4 ARM cores (same family) connected to the same JTAG scan chain. For every core you can start its own GDB session. The default port numbers used to attach the remote targets are 2001 ... 2004. In the Telnet you switch between the cores with the command "select <0..3>". In the configuration file, simply begin the line with the ap- propriate core number. If there is no #n in front of a line, the BDI assumes core #0.

The following example defines two cores on the scan chain.

[TARGET]
CLOCK	1			;JTAG clock (0=Adaptive, 1=8MHz, 2=4MHz, 3=2MHz)
WAKEUP	1000			;wakeup time after reset
#0 CPUTYPE		ARM1136
#0 SCANPRED		0	0	;JTAG devices connected before this core
#0 SCANSUCC		1	4	;JTAG devices connected after this core
#0 VECTOR		CATCH		;catch unhandled exceptions
#0 BREAKMODE		SOFT		;SOFT or HARD
#0 DCC		8		;DCC I/O via TCP port 8
#1 CPUTYPE		ARM1136
#1 SCANPRED		1	4	;JTAG devices connected before this core
#1 SCANSUCC		0	0	;JTAG devices connected after this core
#1 VECTOR		CATCH		;catch unhandled exceptions
#1 BREAKMODE		SOFT		;SOFT or HARD
#1 DCC		7		;DCC I/O via TCP port 7

Note:

It is not possible to concurrent debug an ARM11 and a Cortex-A8 core even if they are located on the same scan chain.

© Copyright 1997-2007 by ABATRON AG Switzerland V 1.04