Add OpenRISC 1000 (or1k) support

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

Author: jhol

.github/workflows/ci.yml

@@ -48,6 +48,7 @@ on:
         - arm-zephyr-eabi
         - microblazeel-zephyr-elf
         - mips-zephyr-elf
+        - or1k-zephyr-elf
         - riscv64-zephyr-elf
         - rx-zephyr-elf
         - sparc-zephyr-elf
@@ -176,6 +177,7 @@ jobs:
             arm-zephyr-eabi)                      build_target_arm_zephyr_eabi="y";;
             microblazeel-zephyr-elf)              build_target_microblazeel_zephyr_elf="y";;
             mips-zephyr-elf)                      build_target_mips_zephyr_elf="y";;
+            or1k-zephyr-elf)                      build_target_or1k_zephyr_elf="y";;
             riscv64-zephyr-elf)                   build_target_riscv64_zephyr_elf="y";;
             rx-zephyr-elf)                        build_target_rx_zephyr_elf="y";;
             sparc-zephyr-elf)                     build_target_sparc_zephyr_elf="y";;
@@ -228,6 +230,7 @@ jobs:
           build_target_arm_zephyr_eabi="y"
           build_target_microblazeel_zephyr_elf="y"
           build_target_mips_zephyr_elf="y"
+          build_target_or1k_zephyr_elf="y"
           build_target_riscv64_zephyr_elf="y"
           build_target_rx_zephyr_elf="y"
           build_target_sparc_zephyr_elf="y"
@@ -320,6 +323,7 @@ jobs:
         [ "${build_target_arm_zephyr_eabi}" == "y" ]                      && MATRIX_TARGETS+='"arm-zephyr-eabi",'
         [ "${build_target_microblazeel_zephyr_elf}" == "y" ]              && MATRIX_TARGETS+='"microblazeel-zephyr-elf",'
         [ "${build_target_mips_zephyr_elf}" == "y" ]                      && MATRIX_TARGETS+='"mips-zephyr-elf",'
+        [ "${build_target_or1k_zephyr_elf}" == "y" ]                      && MATRIX_TARGETS+='"or1k-zephyr-elf",'
         [ "${build_target_riscv64_zephyr_elf}" == "y" ]                   && MATRIX_TARGETS+='"riscv64-zephyr-elf",'
         [ "${build_target_rx_zephyr_elf}" == "y" ]                        && MATRIX_TARGETS+='"rx-zephyr-elf",'
         [ "${build_target_sparc_zephyr_elf}" == "y" ]                     && MATRIX_TARGETS+='"sparc-zephyr-elf",'
@@ -1827,6 +1831,10 @@ jobs:
               mips-zephyr-elf)
                 PLATFORM_ARGS+="-p qemu_malta "
                 ;;
+              or1k-zephyr-elf)
+                # TODO: Enable qemu_or1k when zephyrproject-rtos/zephyr#98160 is merged
+                # 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)
 - RX
 - SPARC (32-bit and 64-bit; SPARC V8, SPARC V9)

cmake/zephyr/gnu/target.cmake

@@ -11,6 +11,7 @@ set(CROSS_COMPILE_TARGET_riscv   riscv64-zephyr-elf)
 set(CROSS_COMPILE_TARGET_mips       mips-zephyr-elf)
 set(CROSS_COMPILE_TARGET_rx           rx-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 +1,9 @@
+CT_CONFIG_VERSION="3"
+CT_EXPERIMENTAL=y
+CT_ARCH_OPENRISC=y
+CT_TARGET_CFLAGS="-ftls-model=local-exec"
+CT_TARGET_VENDOR="zephyr"
+CT_MULTILIB=n
+CT_MULTILIB_SPACE=n
+CT_MULTILIB_ANY=n
+CT_DEMULTILIB=y