Lauterbach ICD for i.MX53

The Lauterbach In-Circuit-Debugger supports Bluetechnix i.MX53 modules and boards.

Web site: https://www.lauterbach.com

Demonstration files

can be downloaded from our FTP server: Link

This contains several Trace32 batch files (*.cmm):

• demo.cmm: Based on Freescale Quick Start Board example
• ddrstresstest.cmm: DDR Stress test, including DDR2 configuration sequence
• u-boot.cmm: Load/attach to U-Boot and debug it
• linux.cmm: Load U-Boot, Linux kernel, with Lauterbach Linux Awareness
• linux-app-debug.cmm: Load U-Boot, Linux kernel, debug an application

Impressions

The Lauterbach ICD and the TRACE32 software supports Linux kernel awareness, and hence lets you debug

• Linux kernel
• Linux kernel modules
• Linux user space applications

Here are some debugging impressions with Lauterbach JTAG Debugger and CM-i.MX53, debugging Linux:

Linux kernel debugging

Kernel started and halted

Using linux.cmm batch file

The Linux kernel boots to the login prompt, then the debugger halts it.

B::Data.List is the code window, showing mixed C and assembly code from Linux's process.c file.

B::TASK.DTask shows a list of all Linux tasks.

B::var.frame shows stack frames.

B::TASK.Process shows Linux userspace processes.

Linux kernel module debugging

Kernel module loaded

Kernel module loaded

A kernel module (ism_mt9m025_camera) was loaded with the Linux Shell.

B::TASK.MODule shows a list of loaded kernel modules.

B::List shows the code of the module as it is loaded into RAM.

Breakpoint in kernel module

Breakpoint in kernel module

A breakpoint in the kernel module is set and hit.

B::sYmbol.Browse is the symbol browser and lets you find the function mt9m024_init_mode().

B::Break.List shows the breakpoints list.

B::Var.REF shows current variables in this function after hitting the breakpoint.

Linux application debugging

Linux application debugging

Linux application debugging

Using linux-app-debug.cmm batch file (and app_debug.cmm script)

Debugger is prepared for process start; process is started in terminal. Debugger detects process start and automatically halts in main().

B::Data.List shows application's code.

B::TASK.Process shows processes - hello is current.