Hi Conor,
On 20/2/25 19:30, Conor Dooley wrote:
+cc qemu-riscv, Alistar.
On Fri, Feb 14, 2025 at 07:24:37AM +0100, Sebastian Huber wrote:
Booting the microchip-icicle-kit machine using the latest PolarFire SoC
Hart Software Services (HSS) no longer works since Qemu lacks support
for several registers (clocks, DRAM controller). Also reading from the
SDCard does not work currently.
On that note, I think the inaccurate docs about polarfire should be
removed. There's a wiki page here with dead links, or links to things
that do not work anymore:
https://wiki.qemu.org/Documentation/Platforms/RISCV#Microchip_PolarFire_SoC_Icicle_Kit
I think the whole section should be removed, find it kinda odd that
there's a polarfire section but not for any other board. Either way,
it's talking about something that just does not work, the current HSS
and Yocto don't boot.
There's also a docs page here:
https://www.qemu.org/docs/master/system/riscv/microchip-icicle-kit.html
that has a copy of the table your patch 4 modifies, that probably should
be updated to match your changes.
In a similar vein to the wiki, it talks about the HSS and booting a
yocto wic image. I think those should be deleted since they don't work.
Alistar/Other RISC-V folks, what do you think? Bin wrote the port but
seems to be AFK and I don't have the capacity to fix any of that stuff
on top of what I already do in my spare time - do you agree that
deleting the now inaccurate docs makes sense?
In order to allow tests runs for real-time kernels such as RTEMS and
Zephyr, improve the boot customization. This patch set enables a direct
run of kernel executables, for example:
qemu-system-riscv64 -no-reboot -nographic \
-serial null -serial mon:stdio \
-smp 2 \
-bios none \
-machine microchip-icicle-kit,clint-timebase-frequency=10000000 \
-kernel rtos.elf
The series breaks my usage:
qemu//build/qemu-system-riscv64 -M microchip-icicle-kit \
-m 3G -smp 5 \
-kernel vmlinux.bin \
-dtb riscvpc.dtb \
-initrd initramfs.cpio.gz \
-display none -serial null \
-serial mon:stdio \
-D qemu.log -d unimp
opensbi-riscv64-generic-fw_dynamic.bin: No such file or directory
qemu-system-riscv64: could not load firmware
'opensbi-riscv64-generic-fw_dynamic.bin'
make: *** [Makefile:305: qemu-icicle] Error 1
Figure it is likely to be your patch 4? The file does exist, so probably
some sort of path-to-it issues?
Maybe missing the -L option?
-L path set the directory for the BIOS, VGA BIOS and keymaps
Regards,
Phil.
