On Wed, Feb 10, 2021 at 12:02 PM Pascal Scholz <pascal.sch...@tu-dresden.de> wrote: > > 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.
Great! > > Best regards and thanks again! No worries! Alistair > > 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 > >> > >>
