>> The RTEMS development community is considering having a Google Summer >> of Code student test LinCAN on a simulated RTEMS target board using >> QEMU, and have some questions: >> >> 1. What guidelines should the student follow when writing the device > >> simulation, so the device simulation will be "upstreamed"/accepted by >> the QEMU project? >> 2. Is there additional documentation on how to write a device >> simulation?
>Unfortunately there is not much documentation. Would following the guidance in: http://lists.gnu.org/archive/html/qemu-devel/2011-07/msg00842.html increase the probability the device simulation would be committed to qemu? >Would this interact with >something in the host (e.g. emulating the sensors)? Or is it like USB >where QEMU has emulation of both controllers and devices (e.g. tablets >or storage)? we want to be able to verify a guest OS's CAN driver has been integrated properly and is sending CAN packets... Perhaps along the lines of two calls: qemu-system-arm -hda linux1.img -can student-implemented-device qemu-system-arm -hda linux2.img -can student-implemented-device Then using a network protocol analyzer (such as Wireshark) with a custom filter to recognize CAN packets, OR qemu-system-arm -hda linux1.img -can student-implemented-device then attaching a real CAN device to the host computer and verifying that the output is being recognized be real hardware. Whichever is more feasible to implement... >There are lots of different devices in QEMU; a student with good code >reading abilities should be able to find what he needs, but if you are >writing an entire emulation subsystem it's going to be a lot of work. Is it feasible to implement an emulation of a CAN device as a Google Summer of Code project? If so, what would be a feasible CAN device to implement? If not, would having the student hook up a real CAN device to an emulated guest OS be feasible to implement as a Google Summer of Code project? >> 3. Could we get a co-mentor from qemu-devel to help the student with >> technical questions, or if not, would this mailing list be willing to >> help us out? >I don't know if someone is available to mentor the project, but the >mailing list would surely be of help. Thanks we really appreciate all the help :) >Paolo
