On 12/21/20 12:05 PM, Huacai Chen wrote: > Add Loongson-3 based machine support, it use liointc as the interrupt > controler and use GPEX as the pci controller. Currently it can work with > both TCG and KVM. > > As the machine model is not based on any exiting physical hardware, the > name of the machine is "loongson3-virt". It may be superseded in future > by a real machine model. If this happens, then a regular deprecation > procedure shall occur for "loongson3-virt" machine. > > We now already have a full functional Linux kernel (based on Linux-5.4.x > LTS) here: > > https://github.com/chenhuacai/linux > > Of course the upstream kernel is also usable (the kvm host side and > guest side have both been upstream in Linux-5.9): > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > > How to use QEMU/Loongson-3? > 1, Download kernel source from the above URL; > 2, Build a kernel with arch/mips/configs/loongson3_defconfig; > 3, Boot a Loongson-3A4000 host with this kernel (for KVM mode); > 4, Build QEMU-master with this patchset; > 5, modprobe kvm (only necessary for KVM mode); > 6, Use QEMU with TCG: > qemu-system-mips64el -M loongson3-virt,accel=tcg -cpu Loongson-3A1000 > -kernel <path_to_kernel> -append ... > Use QEMU with KVM: > qemu-system-mips64el -M loongson3-virt,accel=kvm -cpu Loongson-3A4000 > -kernel <path_to_kernel> -append ... > > The "-cpu" parameter is optional here and QEMU will use the correct type > for TCG/KVM automatically. > > Signed-off-by: Huacai Chen <chenhua...@kernel.org> > Co-developed-by: Jiaxun Yang <jiaxun.y...@flygoat.com> > Signed-off-by: Jiaxun Yang <jiaxun.y...@flygoat.com> > --- > MAINTAINERS | 1 + > default-configs/devices/mips64el-softmmu.mak | 1 + > hw/mips/Kconfig | 11 + > hw/mips/loongson3_virt.c | 621 +++++++++++++++++++ > hw/mips/meson.build | 2 +- > 5 files changed, 635 insertions(+), 1 deletion(-) > create mode 100644 hw/mips/loongson3_virt.c
Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>
