* H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> [191014 09:12]: > > > Am 12.10.2019 um 15:09 schrieb H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>: > > > > Hi, > > > >> Am 05.10.2019 um 18:58 schrieb H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>: > > > > I have found the following description, followed all steps, and it works: > > > > http://blog.0xpebbles.org/PowerVR-SGX-on-the-beaglebone-black-in-2019 > > > > So with this, I have got a working user-space setup for BeagleBone and some working > > pvrsrvkm.ko module (kernel 4.4.155-ti-r155) for evaluation. > > > What I don't have yet is the full source code or build recipe for the specific > > 4.4.155-ti-r155 pvrsrvkm.ko from TI. > > > > But even without having this yet, I can start experiments by replacing > > kernel and pvrsrvkm.ko with mine. This should allow to gain new insights. > > Good news: > > after making a Hybrid SD image of the setup described above and replacing the > 4.4.155-ti-r155 kernel with its pvrsrvkm.ko by my own 5.4-rc2 kernel and pvrsrvkm, > I was able to start the pvrsrv uKernel. And run the gles1test1 on beaglebone > (without LCD but also without errors). > > With this knowledge I could adapt my user-space. There are indeed different > non-free binaries for sgx530, sgx540, sgx544. And SGX needs enough coherent memory. > So I could make a completely self-built kernel and rootfs (using the git clone from > ti for the firmware + make install) run on BeagleBone. > > Here is a quickly taken video: > > https://youtu.be/jFCPR_EvtjY Nice :) > With the same setup, I can now also load the kernel driver and run pvrsrvctl on > DM3730 without errors, but the gles1test1 reports some error and fails to run. > Maybe something in the video subsystem or memory mapping is still wrong. > > Unfortunately, the same setup does not run on omap5. It looks like there are different > releases for the non-free binaries and I have to pick the right one. > > On BBB the version I could make running is branch ti-img-sgx/1.14.3699939_k4.4 from > git://git.ti.com/graphics/omap5-sgx-ddk-um-linux.git. Target ti335x works while > target jacinto6evm fails for OMAP5. A diff on the binaries for e.g. pvrsrvctl shows > that they are different. > > If you want to repeat this setup and my instructions are too imprecise, please > ask. > > So in summary this means: > * the common foundation (clock, reset, power etc.) setup is working - thanks to Tero, Tony and others > * I have added device tree nodes for each SoC type to define sgx registers, interrupts, compatible etc. > * compiling SoC specific kernel module variants from single source tree works > * the work can already be demoed on BBB and OMAP5 Pyra (using different user-space binaries) > > Basically I am now ready to post an RFC for the sgx child device nodes together > with a bindings document [1]. But I am not sure if I should better wait until > really all underlaying prm+rtsctl+syscon+idlest-polling patches by Tero and Tony [2] > have matured in linux-next and have arrived in v5.5-rc1. Would be short before Xmas. I think you've already proven that we can have a generic binding for the sgx using standard properties :) So AFAIK, there's nothing stopping you from posting the binding and dts changes for review for v5.5. > Independent of low level patches, we all have to discuss how we want to get the GPLed > kernel driver [3] into mainline drivers/staging. This likely needs more cleanup before > it can be proposed. You probably need a shell script using sed or something to get rid of the crazy directory path for the kernel driver :) Just make it something like: drivers/staging/pvr Then if you have a script doing the directory path conversion, you can still convert and diff against any other prv branches you may find. And you can get rid of all the LINUX_VERSION_CODE stuff too for the mainline kernel. Regards, Tony > [1]: https://github.com/openpvrsgx-devgroup/linux_openpvrsgx/commits/letux/omap-pvr-soc-glue-v5 > [2]: https://github.com/openpvrsgx-devgroup/linux_openpvrsgx/commits/letux/omap-sysc-prm-gfx > [3]: https://github.com/openpvrsgx-devgroup/linux_openpvrsgx/commits/letux/latest-pvr >
