Hi Alistair, thanks for your quick and helpful reply. :)
I'll see, if I can try them out on the weekend and will report my results. Best regards and thanks again! Pascal On 08.02.21 23:49, Alistair Francis wrote: > On Mon, Feb 8, 2021 at 12:00 PM Pascal Scholz > <s6899...@msx.tu-dresden.de> wrote: >> Hi all, >> >> I'm hoping that I addressed the right mailing lists. > Hello Pascal, > > Yep, this is the right place :) > >> I'm working a bit with qemu's risc-v emulation. My current goal is to >> simulate a complete boot process for the SiFive Unleashed Board (SU 540 >> SoC)[1]. I've created the correspondig OpenSBI and U-Boot images, being >> the -bios and the -kernel images. It's possible for me to boot up to the >> U-Boot prompt. From this prompt I now want to boot an system image >> located on an emulated sd card. >> >> However I now fail to get a working sd card within qemu for the device >> sifive_u. For example i tried the following command: >> >> qemu-system-riscv64 -M sifive_u -m 8G -serial stdio -bios >> build/platform/sifive/fu540/firmware/fw_jump.bin -kernel >> ../../u-boot/u-boot.bin -device sdhci-pci -device sd-card,drive=sdX >> -drive id=sdX,if=none,format=raw,file=path/to/image.elf >> >> This results in Qemu telling me: -device sdhci-pci: No 'PCI' bus found >> for device 'sdhci-pci'. >> >> Using the machine "virt" the command above works. >> >> The thing i tried was: >> >> qemu-system-riscv64 -M sifive_u -m 8G -serial stdio -bios >> opensbi/build/platform/sifive/fu540/firmware/fw_jump.bin -kernel >> ../u-boot/u-boot.bin -sd path/to/image.elf >> >> Resulting in: machine type does not support if=sd,bus=0,unit=0 >> >> >> Even if the machine gets stuck at some point when booting, Qemu has no >> problem starting the VM if I use "-M virt" instead of "-M sifive_u". At >> this point i think, that the machine "sifive_u" doesn't support sd >> cards? Is this guess right or is there anything left I can try? After > Correct. There is no SD card support for the SiFive U in QEMU. > > You actually just reminded me though that someone has sent patches to > add support and I need to review them. > > You can find the patches here: > https://patchew.org/QEMU/20210126060007.12904-1-bmeng...@gmail.com/ > which should work when applied to QEMU. > > If you do get a chance to test the patches it would be great if you > can let me know what works/doesn't work for you. > > Alistair > >> all I'm a bit confused, because there seems to be a block device "sd0" >> when I try to start the machine "sifive_u" without any additional >> device/drive arguments. I would really appreciate if someone would tell >> me, what I'm doing wrong. >> >> Thanks in advance and stay healthy! >> >> Best regards >> >> Pascal >> >> >> [1] https://www.sifive.com/boards/hifive-unleashed >> >>
