With those, QEMU's Pegasos II emulation seems to contain the essential parts now.
Interesting comment from the author:
"The whole pegasos2 seems to be like a MIPS board with a PPC CPU even down to the firmware which looks quite like PMON just has SmartFirmware instead of the commands of PMON. So whoever designed it, might have taken inspiration from some MIPS hardware." https://lists.gnu.org/archive/html/qemu-ppc/2021-02/msg00252.html
Edit: changed links to more recent versions of the patches
