[PATCH v2 0/9] powerpc: Add support for Microwatt soft-core
From: Paul Mackerras <hidden>
Date: 2021-06-18 03:55:40
This series of patches adds support for the Microwatt soft-core. Microwatt is an open-source 64-bit Power ISA processor written in VHDL which targets medium-sized FPGAs such as the Xilinx Artix-7 or the Lattice ECP5. Microwatt currently implements the scalar fixed plus floating-point subset of Power ISA v3.0B plus the radix MMU, but not logical partitioning (i.e. it does not have hypervisor mode or nested radix translation). Changes in v2: - Dropped the patch that adds support for the PRTBL register, since it is not architected. Instead, I have added support for a 1-entry partition table to Microwatt and implemented the PTCR register. - Updated the device tree. - Dropped the change to archrandom.h. - Combined patches 10 and 11 of the previous series into one. Paul. arch/powerpc/Kconfig | 2 +- arch/powerpc/boot/Makefile | 4 + arch/powerpc/boot/devtree.c | 59 ++++--- arch/powerpc/boot/dts/microwatt.dts | 138 ++++++++++++++++ arch/powerpc/boot/microwatt.c | 24 +++ arch/powerpc/boot/ns16550.c | 9 +- arch/powerpc/boot/wrapper | 5 + arch/powerpc/configs/microwatt_defconfig | 98 ++++++++++++ arch/powerpc/kernel/udbg_16550.c | 39 +++++ arch/powerpc/platforms/Kconfig | 1 + arch/powerpc/platforms/Makefile | 1 + arch/powerpc/platforms/microwatt/Kconfig | 13 ++ arch/powerpc/platforms/microwatt/Makefile | 1 + arch/powerpc/platforms/microwatt/rng.c | 48 ++++++ arch/powerpc/platforms/microwatt/setup.c | 41 +++++ arch/powerpc/sysdev/xics/Kconfig | 3 + arch/powerpc/sysdev/xics/Makefile | 1 + arch/powerpc/sysdev/xics/ics-native.c | 257 ++++++++++++++++++++++++++++++ arch/powerpc/sysdev/xics/xics-common.c | 2 + 19 files changed, 718 insertions(+), 28 deletions(-)