Albatron Technology ARM11/Cortex-A8 User Manual

bdi

GDB

© Copyright 1997-2007 by ABATRON AG Switzerland 

V 1.04

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.