The QEMU Or1ksim machine emulates the standard OpenRISC board simulator which is also the standard SoC configuration.
ETHOC Ethernet controller
SMP (OpenRISC multicore using ompic)
The Or1ksim machine can be started using the
to load a Linux kernel and optional disk image.
$ qemu-system-or1k -cpu or1220 -M or1k-sim -nographic \ -kernel vmlinux \ -initrd initramfs.cpio.gz \ -m 128
Linux guest kernel configuration
The ‘or1ksim_defconfig’ for Linux openrisc kernels includes the right drivers for the or1ksim machine. If you would like to run an SMP system choose the ‘simple_smp_defconfig’ config.
Hardware configuration information
or1k-sim board automatically generates a device tree blob (“dtb”)
which it passes to the guest. This provides information about the
addresses, interrupt lines and other configuration of the various devices
in the system.
The location of the DTB will be passed in register
r3 to the guest operating