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.

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

v2:

* Add documentation update.

* In patch 3, warn if no device tree is specified.

* In patch 4, use riscv_find_firmware() to locate the firmware shipped with Qemu.

Sebastian Huber (6):
  hw/misc: Add MPFS system reset support
  hw/riscv: More flexible FDT placement for MPFS
  hw/riscv: Make FDT optional for MPFS
  hw/riscv: Allow direct start of kernel for MPFS
  hw/riscv: Configurable MPFS CLINT timebase freq
  hw/riscv: microchip_pfsoc: Rework documentation

 docs/system/riscv/microchip-icicle-kit.rst | 124 ++++++-----------
 hw/misc/mchp_pfsoc_sysreg.c                |   7 +
 hw/riscv/microchip_pfsoc.c                 | 151 +++++++++++++++------
 include/hw/riscv/microchip_pfsoc.h         |   1 +
 4 files changed, 162 insertions(+), 121 deletions(-)

-- 
2.43.0

On Tue, Feb 25, 2025 at 10:55 AM Sebastian Huber
<sebastian.huber@embedded-brains.de> 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.
>
> 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
>
> v2:
>
> * Add documentation update.
>
> * In patch 3, warn if no device tree is specified.
>
> * In patch 4, use riscv_find_firmware() to locate the firmware shipped with Qemu.
>
> Sebastian Huber (6):
>   hw/misc: Add MPFS system reset support
>   hw/riscv: More flexible FDT placement for MPFS
>   hw/riscv: Make FDT optional for MPFS
>   hw/riscv: Allow direct start of kernel for MPFS
>   hw/riscv: Configurable MPFS CLINT timebase freq
>   hw/riscv: microchip_pfsoc: Rework documentation

Thanks!

Applied to riscv-to-apply.next

Alistair

>
>  docs/system/riscv/microchip-icicle-kit.rst | 124 ++++++-----------
>  hw/misc/mchp_pfsoc_sysreg.c                |   7 +
>  hw/riscv/microchip_pfsoc.c                 | 151 +++++++++++++++------
>  include/hw/riscv/microchip_pfsoc.h         |   1 +
>  4 files changed, 162 insertions(+), 121 deletions(-)
>
> --
> 2.43.0
>