u-boot-qemu
packageqemu-system-arm -M virt -m 2g -cpu cortex-a15 -bios /usr/lib/u-boot/qemu_arm/u-boot.bin -monitor telnet:127.0.0.1:6299,server,nowait -serial mon:stdio
setenv serverip 192.168.0.5 && tftpboot 0x40400000 arm_qnx.ifs && go 0x40400000
replace 192.168.0.5
with the address of your network adapter
Now you should be able to promt the QNX shell
Enjoy!