Hi, This is a rather incomplete and basic model of the Pico Pi that I hacked up over the Christmas break. It took me a bit of faffing about to get it up and running but as it stands it will now run the first few hundred instructions of the RP2040 mask ROM before looping waiting for CLK_SYS_SELECTED to update (which it never will as it is currently unimplemented).
I don't know when I'll next get a chance to hack on it but I thought it was worth posting as a reference. If anyone has an inclination to take it further then at least the initial baby steps are done for you. There is no rush to review this although I am curious if anyone has comments about how the model is put together. It uses -kernel to load the user program (although it never gets there at the moment): qemu-system-arm -d unimp,guest_errors -M raspi-pico \ --kernel ~/mysrc/pico-air.rust/pico-air.git/target/thumbv6m-none-eabi/debug/rp2040-project-template \ -display none -serial mon:stdio Alex Bennée (6): hw/arm: arm initial boilerplate for RP2040 SoC hw/arm: add boilerplate for machines based on the RP2040 hw/arm: wire-up memory from the Pico board and the SoC pc-bios: add pipico mask rom (!upstream) hw/arm: add mask boot ROM logic docs/devel: add some clarifying text for aliases docs/devel/memory.rst | 14 +- configs/devices/arm-softmmu/default.mak | 2 + include/hw/arm/rp2040.h | 39 +++++ hw/arm/raspi_pico.c | 97 ++++++++++++ hw/arm/rp2040.c | 201 ++++++++++++++++++++++++ hw/arm/Kconfig | 6 + hw/arm/meson.build | 2 + pc-bios/pipico.rom | Bin 0 -> 16384 bytes 8 files changed, 356 insertions(+), 5 deletions(-) create mode 100644 include/hw/arm/rp2040.h create mode 100644 hw/arm/raspi_pico.c create mode 100644 hw/arm/rp2040.c create mode 100644 pc-bios/pipico.rom -- 2.30.2
