Wolfgang Denk wrote: >Dear Ivica, > >in message <41A5F930.3080104 at asist-traffic.com> you wrote: > > >>I have a MPC5200 based custom board with preloaded u-boot. >> >> > >May I ask why you want to start from scratch? Is it for educational >purposes? Otherwise you could just use existing and well-tested >toolchains like our ELDK which isavailable for free (see >http://www.denx.de/ELDK.html); of course you can also use the ELDK's >build environment to rebuild everything from scratch if you really >want to be sure that you can recompile everything without need to >rely on any external resources. > > Educational reasons were my primary motives besides the independence factor. :-) I used ELDK extensively on my other projects and I was very pleased with the kit. I used this kit on TQM boards on my former job. Board that I use now is totally custom made and I expect to have difficulties with it anyway. My motto was "If I can't build/create the tools I'm going to work with I really shouldn't mess around in the first place". That said, I will always keep a backup solution ready (read ELDK) and try to thoroughly understand everything I do. I wanted to build my system from the ground up but I don't have the tools to do it (BDI2000, ...). My board was preloaded with u-boot. Since this board is not yet truly industrial ready I will need to somehow stress it and test it. I will have a certain budget to spend.What tools should I use? BDI2000? Any alternatives, or is this simply superior tool for debugging purposes?
>>So far I managed to create GNU toolchain for it with crostool from >>Dan Kegel. Everything was built without any problems. Of course, >>I wanted to test this toolchain so I wanted to compile a simple >>hello_world program load it into the memory of my MPC5200 board >>and run it. So far I've failed. I admit. I don't know how to compile >>a program to run without the OS. But I have some clues. I think it >> >> > >There is some pretty extensive documentation in our DULG about how to >use U-Boot and Linux in Embedded systems; have a look at >http://www.denx.de/twiki/bin/view/DULG/Manual > > > Yes I know of it. It doesn't describe though the process of compiling and linking standalone applications to run without OS. Regards, Ivica
