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 > >
