Phil Reid <[email protected]> writes: > On 3/06/2016 18:34, Lukas Jünger wrote: >> Hello, >> >> I have been trying for a long time to generate a bootable device >> tree for my fpga hardware on my DE0-nano-SoC. However, anyhow I try >> I fail. I can build a >> device tree without problems using make dtbs, but of course that >> doesn't include my custom fpga hardware. I made a very simple design >> now just with a timer that >> should generate an interrupt but it doesn't work. When i follow the >> instructions and use sopc2dts my 4.1ltsi-rt kernel just hangs after >> unzipping. I tried >> different kernel versions, I tried to use earlyprintk to debug. I >> get some errors with sopc2dts though. I use the one form >> altera-opensource github repository >> like this: >> >> java -jar /home/lukas/sopc2dts/sopc2dts.jar -v --input receiver.sopcinfo >> --output socfpga.dts --type dts --board >> atlas-soc-ghrd/board_info/board_info_ATLAS_SOC_GHRD.xml --board >> atlas-soc-ghrd/board_info/hps_common_board_info.xml --bridge-removal >> all --clocks >> alias ethernet0 /sopc/ethernet@0xff702000 >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> Try to eliminate hps_bridge_avalon: hps_0_bridges_f2h >> Component generic_timer_0 of class generic_timer is unknown >> Component generic_timer_0 of class generic_timer is unknown >> dts memory section: No memory nodes specified. Blindly adding them all >> >> When I compare the device tree generated to the one coming from the >> kernel git, it uses different syntax and layout, so no surprise that >> it doesn't work. >> What am I doing wrong? Is there a tutorial on how to just get a >> basic design working with interrupts in the linux kernel? >> > > G'day Lukas, > > You're not doing anything wrong. > The device tree from the sopc2dts doesn't work. > What I've done is setup scripts to: > - Use sopc2dts to generate dts. > - Process it thru a script to strip out everything other than the fpga stuff > converting it to a dtsi. > - Modified the kernel dts and then use it and the sopc2dts to to create a > usuable dtb. > > I found the altera tools package with the quartus install lag too far > behind the kernel development to give you something that boots. > The dts from the kernel source is generally more correct than the > sopc2dts one. However depending on you platform you may have different > periphals enabled.
It's not really that sopc2dts doesn't work, it's just that they need more entries for more recent kernels. I'm up to nearly a thousand lines in my XML files. > Also don't forget that the spl / uboot need to be updated if you change HPS > pin muxes. > This includes fpga bridges etc. > > > Also does the generic timer you add have the necessary _hw.tcl code to add > entries into the dts? It's easier to check this in the dts file than the tcl file, but adds up to the same thing. _______________________________________________ Rfi mailing list [email protected] http://lists.rocketboards.org/cgi-bin/mailman/listinfo/rfi
