Add config for supporting RISC-V

Signed-off-by: Antony Chazapis <chazapis@ics.forth.gr>

.drone.yml

@@ -257,4 +257,51 @@ volumes:
  host:
  path: /var/run/docker.sock
 
+---
+kind: pipeline
+type: docker
+name: k3s-root-linux-riscv64
+
+platform:
+ os: linux
+ arch: amd64
+
+steps:
+- name: build-riscv64
+ image: rancher/dapper:v0.5.0
+ commands:
+ - dapper ci
+ environment:
+ BUILDARCH: riscv64
+ VERBOSE: "0"
+ volumes:
+ - name: docker
+ path: /var/run/docker.sock
+
+- name: github-riscv64-binary-release
+ image: plugins/github-release
+ settings:
+ api_key:
+ from_secret: github_token
+ checksum:
+ - sha256
+ checksum_file: CHECKSUMsum-riscv64.txt
+ checksum_flatten: true
+ files:
+ - dist/k3s-*riscv64.tar
+ prerelease: true
+ when:
+ event:
+ - tag
+ instance:
+ - drone-publish.k3s.io
+ ref:
+ - refs/head/master
+ - refs/tags/*
+
+volumes:
+- name: docker
+ host:
+ path: /var/run/docker.sock
+
 ...

Makefile

@@ -1,5 +1,5 @@
 ARCH ?= amd64
-ALL_ARCH = amd64 arm64 arm ppc64le s390x
+ALL_ARCH = amd64 arm64 arm ppc64le s390x riscv64
 
 export BUILDARCH = $(ARCH)
 export VERBOSE ?= 1

buildroot/riscv64config

@@ -0,0 +1,40 @@
+#
+# Target options
+#
+BR2_ARCH_IS_64=y
+BR2_USE_MMU=y
+# BR2_arcle is not set
+# BR2_arceb is not set
+# BR2_arm is not set
+# BR2_armeb is not set
+# BR2_aarch64 is not set
+# BR2_aarch64_be is not set
+# BR2_i386 is not set
+# BR2_m68k is not set
+# BR2_microblazeel is not set
+# BR2_microblazebe is not set
+# BR2_mips is not set
+# BR2_mipsel is not set
+# BR2_mips64 is not set
+# BR2_mips64el is not set
+# BR2_nios2 is not set
+# BR2_or1k is not set
+# BR2_powerpc is not set
+# BR2_powerpc64 is not set
+# BR2_powerpc64le is not set
+BR2_riscv=y
+# BR2_s390 is not set
+# BR2_sh is not set
+# BR2_sparc is not set
+# BR2_sparc64 is not set
+# BR2_x86_64 is not set
+# BR2_xtensa is not set
+BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT=y
+BR2_ARCH="riscv64"
+BR2_NORMALIZED_ARCH="riscv"
+BR2_ENDIAN="LITTLE"
+BR2_GCC_TARGET_ARCH="riscv64"
+BR2_BINFMT_SUPPORTS_SHARED=y
+BR2_READELF_ARCH_NAME="RISC-V"
+BR2_BINFMT_ELF=y
+BR2_RISCV_64=y