The purpose of this article is to describe how to join together the Processor
Expert and ARM GCC toolchain under Eclipse environment.
Freescale provides the Processor Expert, which contains the Pin Settings Tool
to support an easy way to configure pin signals, from multiplexing to the electrical
properties of pins. With such Tool all the pins can be configured with a graphical
user interface, and then generate C code, in order to use it as an example in applications.
Please refer to the following Web for more details.
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=PROCESSOR-EXPERT-IMX
The Processor Expert Software for i.MX Processors (Version 1.0) does not include
a compiler or linker. Customers should merge the generated code into a build system.
However, it is possible to use common Eclipse-based IDE for the Processor Expert (V 1.0)
and GNU ARM “C” toolchains. In particular, the following sequence may be implemented for
both Linux and Windows hosts.
1.
Install Eclipse (Kepler release) IDE for C/C++ Developers.
https://eclipse.org/downloads/packages/eclipse-ide-cc-developers/keplersr2
2.
Add Eclipse Processor Expert plug-in, as recommended in the documentation.
http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=PROCESSOR-EXPERT-IMX
https://community.freescale.com/docs/DOC-101470
3.
Add GNU ARM Eclipse, which contains configurations for different toolchains,
including Linux ones.
http://gnuarmeclipse.livius.net/blog/plugins-install/
4.
Install appropriate toolchain. For bare-metal applications Sourcery CodeBench Lite
for ARM is sutable one.
Sourcery CodeBench Lite Edition including ARM GCC IDE - Mentor Graphics
Please use Getting Started Guide document from the CodeBench Lite package,
that explains how to install and build applications with the CodeBench Lite.
As an example, let’s consider minimal startup code for i.MX6Q (LED flickering
project on i.MX6Q SDB / SDP). Assuming Eclipse IDE with the Processor Expert
and GNU ARM tools is installed, we should create new “C” project under Eclipse :
New -> C Project. Select “Empty Project” and “Cross ARM GCC”, enter “Project
name”. 
Then : select “Advanced settings” -> C/C++ Build -> Settings
Tab “Target Processor” :
ARM Family : cortex – a9
Architecture : armv7-a
Instruction set : ARM (-marm)
Endianness : Little endian (-mlittle-endian)
FloatABI : Library with FP (softfp)
FPU Type : neon
Unaligned access : Disabled (-mno-unaligned-access)
“Cross ARM GNU Create Flash Image” :
General : Raw binary.
TAB “Toolchains” :
Name : Sourcery CodeBench Lite for ARM EABI (arm-none-eabi-gcc)
(If needed customers can select appropriate toolchain)
Architecture : ARM (AArch32)
Prefix : arm-none-eabi
Check “Use global toolchain path” or select the required path directly.
Source codes may added via Eclipse : File -> Import -> File System -> From directory
Example source is enclosed.
After sources as included in the project, let’s configure linker options via
project properties,
C/C++ Build -> Settings -> Tool Settings -> Cross ARM C Linker -> General.
Add script file “mx6dq.ld”, uncheck “Remove unused section”, check
“Do not use standard start files”.
Note, the article of Miro Samek is very helpful in clarifying of startup code and linker
script. Please refer to “Building Bare-Metal ARM Systems with GNU”. Article Published
online at www.Embedded.com, July/August 2007.
So, now we can build the project : Project -> Build Project.
Two executable file will be generated : test.elf (for JTAG debugger) and test.bin,
which may be used to create bootable SD card, using cfimager-imx.exe utility :
CMD> cfimager-imx -o 0 -f test.bin -d g:
Please use readme files in the enclosed for more details.
Hi,
I have built the above program using GCC ARM GCC ARM Embedded in Launchpad . However given sample is compiled using Sourcery CodeBench Lite (which is available for evaluation period of 30 days only).
I get errors when compiled with GCC ARM. Check .jpg attached
Building target: Prog_from_Integrating.elf
Invoking: Cross ARM C Linker
arm-none-eabi-gcc --specs=rdimon.specs -lrdimon -mcpu=cortex-a9 -march=armv7-a -marm -mlittle-endian -mfloat-abi=softfp -mfpu=neon -mno-unaligned-access -O0 -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -g3 -T "E:\Kepler_Programs\Prog_from_Integrating\mx6dq.ld" -nostartfiles -Wl,-Map,"Prog_from_Integrating.map" -o "Prog_from_Integrating.elf" ./main.o
c:/program files (x86)/gnu tools arm embedded/4.9 2015q3/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/bin/ld.exe: cannot find -lcs3arm
c:/program files (x86)/gnu tools arm embedded/4.9 2015q3/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/bin/ld.exe: cannot find -lcs3
collect2.exe: error: ld returned 1 exit status
makefile:41: recipe for target 'Prog_from_Integrating.elf' failed
make: *** [Prog_from_Integrating.elf] Error 1
It shows cs3arm & cs3 cannot find. These are written in mx6dq.ld (linker Script) at GROUP(-lgcc -lc -lcs3arm -lcs3).
If I remove them from GROUP I get this 'Reset Handler' error.Check .jpg attached
Building target: Prog_from_Integrating.elf
Invoking: Cross ARM C Linker
arm-none-eabi-gcc --specs=rdimon.specs -lrdimon -mcpu=cortex-a9 -march=armv7-a -marm -mlittle-endian -mfloat-abi=softfp -mfpu=neon -mno-unaligned-access -O0 -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -g3 -T "E:\Kepler_Programs\Prog_from_Integrating\mx6dq.ld" -nostartfiles -Wl,-Map,"Prog_from_Integrating.map" -o "Prog_from_Integrating.elf" ./main.o
c:/program files (x86)/gnu tools arm embedded/4.9 2015q3/bin/../lib/gcc/arm-none-eabi/4.9.3/../../../../arm-none-eabi/bin/ld.exe: warning: cannot find entry symbol Reset_Handler; defaulting to 00900000
./main.o: In function `start_secondary_cpu':
E:\Kepler_Programs\Prog_from_Integrating\Debug/../main.c:124: undefined reference to `Reset_Handler'
E:\Kepler_Programs\Prog_from_Integrating\Debug/../main.c:124: undefined reference to `Reset_Handler'
collect2.exe: error: ld returned 1 exit status
makefile:41: recipe for target 'Prog_from_Integrating.elf' failed
make: *** [Prog_from_Integrating.elf] Error 1
Any help to solve this error would be appreciated? I want to build it using GCC ARM. (not Sourcery CodeBench)
Thanks and regards,
Sarang
I am compiling example given here but it giving following error.
