Add OpenRISC 1000 (or1k) support

Signed-off-by: Joel Holdsworth <[email protected]>

Author: jhol

.github/workflows/ci.yml

@@ -49,6 +49,7 @@ on:
         - microblazeel-zephyr-elf
         - mips-zephyr-elf
         - nios2-zephyr-elf
+        - or1k-zephyr-elf
         - riscv64-zephyr-elf
         - sparc-zephyr-elf
         - x86_64-zephyr-elf
@@ -169,6 +170,7 @@ jobs:
             microblazeel-zephyr-elf)              build_target_microblazeel_zephyr_elf="y";;
             mips-zephyr-elf)                      build_target_mips_zephyr_elf="y";;
             nios2-zephyr-elf)                     build_target_nios2_zephyr_elf="y";;
+            or1k-zephyr-elf)                      build_target_or1k_zephyr_elf="y";;
             riscv64-zephyr-elf)                   build_target_riscv64_zephyr_elf="y";;
             sparc-zephyr-elf)                     build_target_sparc_zephyr_elf="y";;
             x86_64-zephyr-elf)                    build_target_x86_64_zephyr_elf="y";;
@@ -217,6 +219,7 @@ jobs:
           build_target_microblazeel_zephyr_elf="y"
           build_target_mips_zephyr_elf="y"
           build_target_nios2_zephyr_elf="y"
+          build_target_or1k_zephyr_elf="y"
           build_target_riscv64_zephyr_elf="y"
           build_target_sparc_zephyr_elf="y"
           build_target_x86_64_zephyr_elf="y"
@@ -305,6 +308,7 @@ jobs:
         [ "${build_target_microblazeel_zephyr_elf}" == "y" ]              && MATRIX_TARGETS+='"microblazeel-zephyr-elf",'
         [ "${build_target_mips_zephyr_elf}" == "y" ]                      && MATRIX_TARGETS+='"mips-zephyr-elf",'
         [ "${build_target_nios2_zephyr_elf}" == "y" ]                     && MATRIX_TARGETS+='"nios2-zephyr-elf",'
+        [ "${build_target_or1k_zephyr_elf}" == "y" ]                      && MATRIX_TARGETS+='"or1k-zephyr-elf",'
         [ "${build_target_riscv64_zephyr_elf}" == "y" ]                   && MATRIX_TARGETS+='"riscv64-zephyr-elf",'
         [ "${build_target_sparc_zephyr_elf}" == "y" ]                     && MATRIX_TARGETS+='"sparc-zephyr-elf",'
         [ "${build_target_x86_64_zephyr_elf}" == "y" ]                    && MATRIX_TARGETS+='"x86_64-zephyr-elf",'
@@ -1551,6 +1555,9 @@ jobs:
             nios2-zephyr-elf)
               PLATFORM_ARGS+="-p qemu_nios2 "
               ;;
+            or1k-zephyr-elf)
+              PLATFORM_ARGS+="-p qemu_or1k "
+              ;;
             riscv64-zephyr-elf)
               PLATFORM_ARGS+="-p qemu_riscv32 "
               PLATFORM_ARGS+="-p qemu_riscv32e "

README.md

@@ -11,6 +11,7 @@ The toolchains for the following target architectures are supported:
 - Microblaze (32-bit)
 - MIPS (32-bit and 64-bit)
 - Nios II
+- OpenRISC 1000
 - RISC-V (32-bit and 64-bit; RV32I, RV32E, RV64I)
 - SPARC (32-bit and 64-bit; SPARC V8, SPARC V9)
 - x86 (32-bit and 64-bit)

cmake/zephyr/target.cmake

@@ -11,6 +11,7 @@ set(CROSS_COMPILE_TARGET_nios2     nios2-zephyr-elf)
 set(CROSS_COMPILE_TARGET_riscv   riscv64-zephyr-elf)
 set(CROSS_COMPILE_TARGET_mips       mips-zephyr-elf)
 set(CROSS_COMPILE_TARGET_microblaze microblazeel-zephyr-elf)
+set(CROSS_COMPILE_TARGET_or1k       or1k-zephyr-elf)
 set(CROSS_COMPILE_TARGET_xtensa   xtensa-${SOC_TOOLCHAIN_NAME}_zephyr-elf)
 
 # ARC uses the same source tree for both ARCv2 & ARCv3 architectures,

configs/or1k-zephyr-elf.config

@@ -0,0 +1,6 @@
+CT_CONFIG_VERSION="3"
+CT_EXPERIMENTAL=y
+CT_ARCH_OR1K=y
+CT_TARGET_CFLAGS="-ftls-model=local-exec"
+CT_TARGET_VENDOR="zephyr"
+CT_MULTILIB=y

meta-zephyr-sdk/recipes-devtools/qemu/zephyr-qemu_git.bb

@@ -199,7 +199,7 @@ inherit autotools pkgconfig
 #--disable-fdt: Cannot use if supporting ARM
 #--disable-kvm: AArch64 has a QEMU/KVM board
 
-QEMUS_BUILT = "aarch64-softmmu arm-softmmu i386-softmmu mips-softmmu mipsel-softmmu nios2-softmmu xtensa-softmmu riscv32-softmmu riscv64-softmmu sparc-softmmu x86_64-softmmu"
+QEMUS_BUILT = "aarch64-softmmu arm-softmmu i386-softmmu mips-softmmu mipsel-softmmu nios2-softmmu xtensa-softmmu riscv32-softmmu riscv64-softmmu sparc-softmmu x86_64-softmmu or1k-softmmu"
 QEMU_FLAGS = "--disable-docs  --disable-sdl --disable-debug-info  --disable-cap-ng \
   --disable-libnfs --disable-libusb --disable-libiscsi --disable-usb-redir --disable-linux-aio\
   --disable-guest-agent --disable-libssh --disable-vnc-png  --disable-seccomp \