Hi all,
I'm hoping that I addressed the right mailing lists.
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
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
