Hi Sharjeel

The tool chain install script will install and build all the tools, libraries and linux kernel and start up Linux running on Or1ksim. See the tool chain page for details of downloading and running this script for different machines.

The Embecosm application note is for those running older versions of the tools, for whom the script is not suitable.

A new version of the script, with updates for all tools is scheduled for release at the end of this month.

HTH,

Jeremy

--
Tel: +44 (1590) 610184
Cell: +44 (7970) 676050
SkypeID: jeremybennett
Email: jeremy.bennett@embecosm.com
Web: www.embecosm.com

Hi Sharjeel,

You can see some examples of standalone code in the Embecosm Application Note #1 Building a Loosely Timed SoC Model with OSCI TLM 2.0.

Using the newlib library, building and running programs is very simple.

or32-elf-gcc -mor32-newlib hello-world.c
or32-elf-sim -m 8M a.out

HTH

At present this only works with the tools built from SVN (the GNU tool chain page gives details of how). It will become the standard tool chain with the new release at the end of this month.

Jeremy

Hi Sharjeel,

As Stefan points out, it is freely available from the OSCI website in exchange for you registering. If you have problems downloading it, let us know. Its specification is IEEE 1666, which exceptionally for the IEEE is also free to download!

This is in libsim.a. Are you sure you are picking up the latest version of Or1ksim? The interface has changed between 0.4.0 and SVN (what will be 0.5.0), so you need to look at how you are calling the function. See or1ksim.h for the prototype.

HTH

Jeremy

Hi Sharjeel,

I don't think this is anything to do with SystemC. I think you have forgotten to specify --target=or32-elf when configuring. See Appendix A, section A.1 in the app note.

or32-elf-gcc -c lib-iftest.c
or32-elf-gcc --library libsim.a -Trc2000.ld lib-iftest.o
lib-iftest.o: In function `_main':
lib-iftest.c:(.text+0x34): undefined reference to `__impure_ptr'
lib-iftest.c:(.text+0x150): undefined reference to `__impure_ptr'
lib-iftest.c:(.text+0x1f0): undefined reference to `_or1ksim_init'
lib-iftest.c:(.text+0x240): undefined reference to `_or1ksim_run'
lib-iftest.c:(.text+0x2e4): undefined reference to `_or1ksim_set_time_point'
lib-iftest.c:(.text+0x320): undefined reference to `_or1ksim_run'
lib-iftest.c:(.text+0x3b0): undefined reference to `_or1ksim_get_time_period'
lib-iftest.c:(.text+0x49c): undefined reference to `_or1ksim_is_le'
lib-iftest.c:(.text+0x534): undefined reference to `_or1ksim_clock_rate'
collect2: ld returned 1 exit status

OK. Looks like you have version 0.3.0. I don't think the pre-compiled versions have been updated. You should be able to confirm this with

or32-elf-sim --version

I believe Or1ksim 0.4.0 builds successfully on Cygwin, so you should download and build it from source.

You'll see Or1ksim 0.5.0rc1 is also now available. However don't use it (yet) with the application note. The library interfaces have changed, and I need to update the application note.

HTH

Jeremy

Hi Hardik,

You need to tell the simulator that it has some memory. Assuming you are using the latest release candidate version, try something like

or32-elf-sim --memory=8M a.out 

That will give you 8 megabytes starting at location zero. More complex arrangements will need a configuration file as described in the Or1ksim user guide.

This is a bit harder. The Embecosm application note number 1 you are using predates the recent changes to the GCC compiler (I will update it later in the year for the new tool chain). One of the key changes is that the GCC compiler no longer inserts underscore before global symbols (not needed for ELF). The solution is edit start.s and replace l.jal _main with l.jal main. You should then rebuild the complete system.

I haven't updated this application note for Or1ksim 0.5.0 (it uses 0.4.0). There are API changes, so the examples will not work. The solution is either to use Or1ksim 0.4.0 (available from the download page), or to modify the API calls (a useful learning exercise).

HTH

Jeremy