On Tue, Jan 03, 2023 at 05:43:34PM +0100, Yann Sionneau wrote: > This patch series adds support for the kv3-1 CPU architecture of the kvx family > found in the Coolidge (aka MPPA3-80) SoC of Kalray. > > This is an RFC, since kvx support is not yet upstreamed into gcc/binutils, > therefore this patch series cannot be merged into Linux for now. > > The goal is to have preliminary reviews and to fix problems early. > > The Kalray VLIW processor family (kvx) has the following features: > * 32/64 bits execution mode > * 6-issue VLIW architecture > * 64 x 64bits general purpose registers > * SIMD instructions > * little-endian > * deep learning co-processor > > Kalray kv3-1 core which is the third of the kvx family is embedded in Kalray > Coolidge SoC currently used on K200 and K200-LP boards. > > The Coolidge SoC contains 5 clusters each of which is made of: > * 4MiB of on-chip memory (SMEM) > * 1 dedicated safety/security core (kv3-1 core). > * 16 PEs (Processing Elements) (kv3-1 cores). > * 16 Co-processors (one per PE) > * 2 Crypto accelerators > > The Coolidge SoC contains the following features: > * 5 Clusters > * 2 100G Ethernet controllers > * 8 PCIe GEN4 controllers (Root Complex and Endpoint capable) > * 2 USB 2.0 controllers > * 1 Octal SPI-NOR flash controller > * 1 eMMC controller > * 3 Quad SPI controllers > * 6 UART > * 5 I2C controllers (3 of which are SMBus capable) > * 4 CAN controllers > * 1 OTP memory > > A kvx toolchain can be built using: > # install dependencies: texinfo bison flex libgmp-dev libmpc-dev libmpfr-dev > $ git clone https://github.com/kalray/build-scripts > $ cd build-scripts > $ source last.refs > $ ./build-kvx-xgcc.sh output > > The kvx toolchain will be installed in the "output" directory. > > A buildroot image (kernel+rootfs) and toolchain can be built using: > $ git clone -b coolidge-for-upstream https://github.com/kalray/buildroot > $ cd buildroot > $ make O=build_kvx kvx_defconfig > $ make O=build_kvx > > The vmlinux image can be found in buildroot/build_kvx/images/vmlinux. > > If you are just interested in building the Linux kernel with no rootfs you can > just do this with the kvx-elf- toolchain: > $ make ARCH=kvx O=build_kvx CROSS_COMPILE=kvx-elf- default_defconfig > $ make ARCH=kvx O=build_kvx CROSS_COMPILE=kvx-elf- -j$(($(nproc) + 1)) > > The vmlinux ELF can be run with qemu by doing: > # install dependencies: ninja pkg-config libglib-2.0-dev cmake libfdt-dev libpixman-1-dev zlib1g-dev > $ git clone https://github.com/kalray/qemu-builder > $ cd qemu-builder > $ git submodule update --init > $ make -j$(($(nproc) + 1)) > $ ./qemu-system-kvx -m 1024 -nographic -kernel <path/to/vmlinux> > > Yann Sionneau (25): > Documentation: kvx: Add basic documentation > kvx: Add ELF-related definitions > kvx: Add build infrastructure > kvx: Add CPU definition headers > kvx: Add atomic/locking headers > kvx: Add other common headers > kvx: Add boot and setup routines > kvx: Add exception/interrupt handling > kvx: irqchip: Add support for irq controllers > kvx: Add process management > kvx: Add memory management > kvx: Add system call support > kvx: Add signal handling support > kvx: Add ELF relocations and module support > kvx: Add misc common routines > kvx: Add some library functions > kvx: Add multi-processor (SMP) support > kvx: Add kvx default config file > kvx: power: scall poweroff driver > kvx: gdb: add kvx related gdb helpers > kvx: Add support for ftrace > kvx: Add support for jump labels > kvx: Add debugging related support > kvx: Add support for CPU Perf Monitors > kvx: Add support for cpuinfo You should strip this series down to just what's needed to boot. You don't need the last 7 patches at least. Rob
