Hi, Aleksandar, On Thu, Sep 17, 2020 at 4:22 PM Aleksandar Markovic <aleksandar.qemu.de...@gmail.com> wrote: > > > > On Wednesday, September 16, 2020, Huacai Chen <zltjiang...@gmail.com> wrote: >> >> Loongson-3 CPU family include Loongson-3A R1/R2/R3/R4 and Loongson-3B >> R1/R2. Loongson-3A R1 is the oldest and its ISA is the smallest, while >> Loongson-3A R4 is the newest and its ISA is almost the superset of all >> others. To reduce complexity, in QEMU we just define two CPU types: >> >> 1, "Loongson-3A1000" CPU which is corresponding to Loongson-3A R1. It is >> suitable for TCG because Loongson-3A R1 has fewest ASE. >> 2, "Loongson-3A4000" CPU which is corresponding to Loongson-3A R4. It is >> suitable for KVM because Loongson-3A R4 has the VZ ASE. >> >> Loongson-3 lacks English documents. I've tried to translated them with >> translate.google.com, and the machine translated documents (together >> with their original Chinese versions) are available here. >> >> Loongson-3A R1 (Loongson-3A1000) >> User Manual Part 1: >> http://ftp.godson.ac.cn/lemote/3A1000_p1.pdf >> http://ftp.godson.ac.cn/lemote/Loongson3A1000_processor_user_manual_P1.pdf >> (Chinese Version) >> User Manual Part 2: >> http://ftp.godson.ac.cn/lemote/3A1000_p2.pdf >> http://ftp.godson.ac.cn/lemote/Loongson3A1000_processor_user_manual_P2.pdf >> (Chinese Version) >> >> Loongson-3A R2 (Loongson-3A2000) >> User Manual Part 1: >> http://ftp.godson.ac.cn/lemote/3A2000_p1.pdf >> http://ftp.godson.ac.cn/lemote/Loongson3A2000_user1.pdf (Chinese Version) >> User Manual Part 2: >> http://ftp.godson.ac.cn/lemote/3A2000_p2.pdf >> http://ftp.godson.ac.cn/lemote/Loongson3A2000_user2.pdf (Chinese Version) >> >> Loongson-3A R3 (Loongson-3A3000) >> User Manual Part 1: >> http://ftp.godson.ac.cn/lemote/3A3000_p1.pdf >> http://ftp.godson.ac.cn/lemote/Loongson3A3000_3B3000usermanual1.pdf (Chinese >> Version) >> User Manual Part 2: >> http://ftp.godson.ac.cn/lemote/3A3000_p2.pdf >> http://ftp.godson.ac.cn/lemote/Loongson3A3000_3B3000usermanual2.pdf (Chinese >> Version) >> >> Loongson-3A R4 (Loongson-3A4000) >> User Manual Part 1: >> http://ftp.godson.ac.cn/lemote/3A4000_p1.pdf >> http://ftp.godson.ac.cn/lemote/3A4000user.pdf (Chinese Version) >> User Manual Part 2: >> I'm sorry that it is unavailable now. >> >> And human-translated documents (W.I.P) are available here now: >> https://github.com/loongson-community/docs/tree/master/English-translation-of-Loongson-manual >> >> Both KVM and TCG are available now! >> >> We now already have a full functional Linux kernel (based on Linux-5.4.x >> LTS, the kvm host side and guest side have both been upstream for Linux- >> 5.9, but Linux-5.9 has not been released yet) here: >> >> https://github.com/chenhuacai/linux >> >> Of course the upstream kernel is also usable (though it is "unstable" >> now): >> >> 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_{def,hpc}config; >> 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. >> >> V1 -> V2: >> 1, Add a cover letter; >> 2, Improve CPU definitions; >> 3, Remove LS7A-related things (Use GPEX instead); >> 4, Add a description of how to run QEMU/Loongson-3. >> >> V2 -> V3: >> 1, Fix all possible checkpatch.pl errors and warnings. >> >> V3 -> V4: >> 1, Sync code with upstream; >> 2, Remove merged patches; >> 3, Fix build failure without CONFIG_KVM; >> 4, Add Reviewed-by: Aleksandar Markovic <aleksandar.qemu.de...@gmail.com>. >> >> V4 -> V5: >> 1, Improve coding style; >> 2, Remove merged patches; >> 3, Rename machine name from "loongson3" to "loongson3-virt"; >> 4, Rework the "loongson3-virt" machine to drop any ISA things; >> 5, Rework "hw/mips: Implement the kvm_type() hook in MachineClass"; >> 6, Add Jiaxun Yang as a reviewer of Loongson-3. >> >> V5 -> V6: >> 1, Fix license preamble; >> 2, Improve commit messages; >> 3, Add hw/intc/loongson_liointc.c to MAINTAINERS; >> 4, Fix all possible checkpatch.pl errors and warnings. >> >> V7 and V8 have only one patch (machine definition) with some minor >> improvements. >> >> V8 -> V9: >> 1, Update KVM type definition from kernel; >> 2, Fix PageMask with variable page size for TCG; >> 3, Add TCG support (add Loongson-EXT instructions). >> >> Huacai Chen and Jiaxun Yang (6): >> linux-headers: Update MIPS KVM type defintition >> target/mips: Fix PageMask with variable page size >> target/mips: Add loongson-ext lswc2 group of instructions (Part 1) >> target/mips: Add loongson-ext lswc2 group of instructions (Part 2) >> target/mips: Add loongson-ext lsdc2 group of instructions >> hw/mips: Add Loongson-3 machine support >> >> Signed-off-by: Huacai Chen <che...@lemote.com> >> --- >> default-configs/mips64el-softmmu.mak | 1 + >> hw/mips/Kconfig | 11 + >> hw/mips/fw_cfg.c | 35 ++ >> hw/mips/fw_cfg.h | 19 + >> hw/mips/loongson3_virt.c | 956 >> +++++++++++++++++++++++++++++++++++ >> hw/mips/meson.build | 3 +- >> linux-headers/linux/kvm.h | 5 +- >> target/mips/cp0_helper.c | 36 +- >> target/mips/cpu.h | 1 + >> target/mips/translate.c | 437 ++++++++++++++++ >> 10 files changed, 1494 insertions(+), 10 deletions(-) >> create mode 100644 hw/mips/fw_cfg.c >> create mode 100644 hw/mips/fw_cfg.h >> create mode 100644 hw/mips/loongson3_virt.c >> -- > > > There should be a suitable note in QEMU documentation describing new > functionality. OK, I will update documentations in V10.
Huacai > > Thanks, > Aleksandar > > >> >> 2.7.0 -- Huacai Chen
