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[[Image:Arm-logo.jpg|right|200px]]

''The reference software development tool suite for ARM processors''

''Developed by ARM Architecture experts, the ARM DS-5™ toolchain enables engineers to develop robust and highly optimized embedded software for ARM application processors, such as the Cortex™-A series, Cortex-R real-time processors and other ARM embedded processors. The DS-5 toolchain comprises tools such as the best-in-class ARM C/C++ Compiler, a powerful Linux/Android™/RTOS-aware debugger, the ARM Streamline™ system-wide performance analyzer and real-time system model simulators, all conveniently packaged in a user friendly integrated development environment (IDE) based on the Eclipse.''

==Introduction==
This is a quick start for ARM DS-5 software, DSTREAM debugging hardware, and Bluetechnix i.MX53 products (CM-i.MX53, Qseven-i.MX537).

This document is not exhaustive, please refer to the [[#Further reading|Further reading]] chapter how to retrieve documentation about DS-5.

==What you will need==
*ARM DS-5 software for Linux or Windows
*ARM DSTREAM Debug and Trace unit (optional)
*Ethernet connection between host and target (optional)

==What is supported==
*DS-5 Community Edition
**Linux application debugging (gdbserver)
**Streamline™ system-wide performance analyzer
*DS-5 Professional Edition & DSTREAM
**Bare Metal Debug (via JTAG)
**Linux Kernel/Device Driver Debug (via JTAG)
**Tracing using the Cortex-A8 ETB (Embedded Trace Buffer) (via JTAG)

==Install ARM DS-5==
You may start with the free DS-5 Community Edition, which is available at https://ds.arm.com/ds-5-community-edition/.

Evaluation licenses for the Professional Edition are available - see https://www.arm.com/products/tools/software-tools/ds-5/ds-5-downloads.php.

==Adding target support==
If your version of DS-5 does not have support for CM-i.MX53/Qseven-i.MX537 yet, you can add a User Configuration Database.

===How to check===
*Start DS-5.
*Click ''Run'' from the menu and choose ''Debug Configurations...''.
*Right-click on ''DS-5 Debugger'' and click ''New''.
*On the ''Connection'' tab, in the ''Select target'' area, search for '''Bluetechnix''' → '''CM-i.MX53'''/'''Qseven-i.MX537'''.
*If the target is not available, proceed.

===Add support===
*Download ''configdb.zip'' containing the Configuration Database Entry from https://support.becom-group.com/releases/imx/mx53/ds-5/.
*Unpack the ZIP file.
*Open DS-5.
*Click ''Window'' from the menu and choose ''Preferences''.
*On the left, expand the ''DS-5'' configuration item and select ''Configuration Database''.
*In the ''User Configuration Databases'' area, click on ''Add'', and select the '''configdb''' folder from the unpacked ZIP file.
*Click on the ''Rebuild database...'' button. You are finished!

: [[Image:Ds5 confdatabase.png|654px]]

==U-Boot debugging with DSTREAM==
DS-5 and DSTREAM are used to initialize the i.MX53 target (including SDRAM), load the U-Boot ELF file to the target's memory, and debug/trace it.

You can download the SDRAM initialization script '''cmimx53.ds''' for DS-5 from https://support.becom-group.com/releases/imx/mx53/ds-5/.

How to create a proper debug configuration.
*Click ''Run'' from the menu and choose ''Debug Configurations...''.
*Right-click on ''DS-5 Debugger'' and click ''New''.
*On the ''Connection'' tab, in the ''Select target'' area, select '''Bluetechnix''' → '''CM-i.MX53'''/'''Qseven-i.MX537'''.
*Choose debug target ''Bare Metal Debug''.

: [[Image:Ds5 mx53 debugconfiguration 3.png|872px]]

*Open the ''Files'' tab.
*Select the U-Boot ELF file '''u-boot''' (from U-Boot's top build directory) as application to download, and check the ''Load symbols'' box.

: [[Image:Ds5 mx53 debugconfiguration 4.png|958px]]

*Now open the ''Debugger'' tab.
*Select ''Debug from entry point''.
*Select the target initialization script '''cmimx53.ds''' (download link above).
*If you like U-Boot to start as soon as you start the DS-5 debugging session, put '''continue''' in the ''debugger commands'' field.
*Finally, add U-Boot's source folder as a source search directory.

: [[Image:Ds5 mx53 debugconfiguration 5.png|958px]]

The following screenshot shows DS-5 while U-Boot debugging, in processor-stopped state, with ETB tracing enabled.

: [[Image:Ds5 mx53 uboot debugging.png|1344px]]

==Linux kernel debugging with DSTREAM==
===Compile the kernel with debug info===

This is required if you want to debug your kernel via JTAG using DSTREAM.

*Go to kernel directory
cd btmxc-linux/
*Configure the kernel
source set-cross-envs
make menuconfig
*Enable the following options in the ''Kernel hacking'' menu:
[*] Kernel debugging
[*] Compile the kernel with debug info
*Rebuild and deploy the kernel

===Configure U-Boot===

In order to allow JTAG access while the Linux kernel is running on the target, you have to tell the kernel with the following argument
jtag=on

To accomplish this,
*Reset or boot the CM-i.MX53/Qseven-i.MX537 with the serial terminal connected and ready.
*Stop booting with any key.
*At the U-Boot prompt, enter
set bootargs_base $(bootargs_base) jtag=on
save
*Reset
reset

=== Create a DS-5 debug configuration ===
*Click ''Run'' from the menu and choose ''Debug Configurations...''.
*Right-click on ''DS-5 Debugger'' and click ''New''.
*On the ''Connection'' tab, in the ''Select target'' area, select '''Bluetechnix''' → '''CM-i.MX53'''/'''Qseven-i.MX537'''.
*Choose between available debug targets.

: [[Image:Ds5 mx53 debugconfiguration.png|1311px]]

*For a kernel debugging session, you have to add a debugger command and add a source search directory in order to enable source-level debugging.
*Go to the ''Debugger'' tab within the debug configuration.
*Select ''Execute debugger commands'', and add
add-symbol-file "<your-path>/vmlinux" S:0x0
*Add the directory where your Linux kernel sources are as a ''Source search directory''.

: [[Image:Ds5 mx53 debugconfiguration 2.png|1311px]]

== Enable Tracing ==
DS-5 may use the on-chip ETB of the i.MX53 to capture a small amount of real time trace data.

*In the debug configuration dialog, go to the ''Connection'' tab.
*Click the ''Edit...'' button for DTSL options.

: [[Image:Ds5 sbc debugconfiguration 5.png|976px]]

*In the DTSL (Debug and Trace Services Layer) Configuration Editor, set the Trace capture method to ''On Chip Trace Buffer (ETB)''.

: [[Image:Ds5 sbc debugconfiguration 3.png|642px]]

*On the Core Trace tab, enable Cortex-A8 trace, and select other options according to your wishes.

: [[Image:Ds5 sbc debugconfiguration 4.png|642px]]

*Click ''OK'' and ''Debug'' in the parent dialog to start debugging.
*If the processor is now halted, e.g. by a breakpoint, the ''Trace'' view update with instruction trace and source-level function analysis.
*If the ''Trace'' view is not yet opened, select ''Window'' from the menu, ''Show View'', and ''Trace''.

: [[Image:Ds5 mx53 traceview.png|1344px]]

== Using DS-5 Streamline ==

*Streamline works over an Ethernet connection.
*No JTAG connection nor debugger hardware is required.
*Supported by the DS-5 Community Edition.

===Prepare the Linux kernel===
In order to use Streamline, some configuration options must be enabled in the kernel configuration.

General setup -->
Kernel Performance Events And Counters -->
[*] Kernel performance events and counters

General setup -->
[*] Profiling Support

Kernel features -->
[*] Tracers
[*] Trace process context switches and events

Kernel hacking -->
[*] Kernel debugging
[*] Compile the kernel with debug info

Afterwards, recompile the kernel and boot the target with the new kernel.

=== Prepare the target ===
Streamline needs a kernel module ('''gator.ko''') and a userspace daemon ('''gatord''') to run on the target.
We offer these two pre-compiled, ready to be installed on the target.

*Download from https://support.becom-group.com/releases/imx/mx53/ds-5/.
*Copy/deploy to your i.MX53 target.
*Make sure the network on the target is set up (e.g., with ''ifconfig''). Remember the target's IP address for later!
*Load the kernel module
insmod gator.ko
*Start the gator daemon
./gatord &

=== Start streaming ===

*If the Streamline view is not visible, open ''Window'' from the menu, and select ''Show View'', ''Other...''.
*In the opened window, from folder ''ARM Streamline'', select the ''Streamline Data'' view.
*Enter the IP address of your i.MX53 target in the top field of the Streamline view, and click the ''Start Capture'' button right of it. Choose a folder for storing the capture data afterwards.

: [[Image:Ds5 mx53 streamline.png|1344px]]

*Now, you can see a live view of the running system, including CPU Activity, Memory usage, Disk I/O etc.
*After you have stopped streaming, you may analyse the data in the ''Capture_Cxx_Axx'' view.

: [[Image:Ds5 mx53 streamline 2.png|1344px]]

== Further reading ==
*ARM Infocenter for DS-5: https://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.subset.swdev.ds5/index.html
**ARM Infocenter for DS-5 Streamline: https://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0482m/index.html
*ARM Infocenter for DSTREAM: https://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.subset.swdev.dstream/index.html
*DS-5 Community Edition: https://ds.arm.com/ds-5-community-edition/
*DS-5 Product Page: https://www.arm.com/products/tools/software-tools/ds-5/index.php
*DS-5 Downloads: https://www.arm.com/products/tools/software-tools/ds-5/ds-5-downloads.php

[[Category:I.MX53]]

ARM DS-5 Quick Start (i.MX53) - Versionsgeschichte

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