nihosa@nihosa-lenovo:~/Downloads/qemu-2.9.0-rc4/sparc64-softmmu$ ./qemu-system-sparc64 -hda /home/nihosa/Downloads/debian-sparc.qcow2 -nographic -L pc-bios -m 200
OpenBIOS for Sparc64
Configuration device id QEMU version 1 machine id 0
kernel cmdline
CPUs: 1 x SUNW,UltraSPARC-IIi
UUID: 00000000-0000-0000-0000-000000000000
Welcome to OpenBIOS v1.1 built on Mar 15 2017 19:37
  Type 'help' for detailed information
Trying disk:a...
Not a bootable ELF image
Loading a.out image...
Loaded 7680 bytes
entry point is 0x4000
SEXIT
1 >