The simple steps to build QEMU for PowePC are:
mkdir build
cd build
../configure --target-list=ppc-softmmu \
--disable-vnc --disable-sdl --disable-gnutls --disable-nettle --disable-gtk
make
MM7705 board is available with PowerPC 476FP core. To start it you can use following command:
sudo ./qemu-system-ppc \
-M mm7705 \
-bios pc-bios/module_mm7705_rumboot.bin \
-drive file=pc-bios/module_mm7705_u-boot.bin,if=mtd,format=raw \
-monitor tcp::2345,server,nowait \
-serial tcp::3555,server,nodelay,nowait \
-gdb tcp::1234,server,nowait \
-nic tap,model=greth,script=scripts/qemu-ifup,downscript=no
If you want to launch qemu with SD card use additional argument:
-drive file=*path_to_sd_image_file*,if=sd,format=raw
Original QEMU readme is renamed to README_original.rst