Ibex is a small and efficient, 32-bit, in-order RISC-V core with a 2-stage pipeline that implements the RV32IMC instruction set architecture.
For more details on lowRISC see here: https://github.com/lowRISC/ibex Signed-off-by: Alistair Francis <alistair.fran...@wdc.com> Reviewed-by: Bin Meng <bin.m...@windriver.com> Reviewed-by: LIU Zhiwei <zhiwei_...@c-sky.com> --- target/riscv/cpu.h | 1 + target/riscv/cpu.c | 11 +++++++++++ 2 files changed, 12 insertions(+) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index d0e7f5b9c5..8733d7467f 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -35,6 +35,7 @@ #define TYPE_RISCV_CPU_ANY RISCV_CPU_TYPE_NAME("any") #define TYPE_RISCV_CPU_BASE32 RISCV_CPU_TYPE_NAME("rv32") #define TYPE_RISCV_CPU_BASE64 RISCV_CPU_TYPE_NAME("rv64") +#define TYPE_RISCV_CPU_IBEX RISCV_CPU_TYPE_NAME("lowrisc-ibex") #define TYPE_RISCV_CPU_SIFIVE_E31 RISCV_CPU_TYPE_NAME("sifive-e31") #define TYPE_RISCV_CPU_SIFIVE_E34 RISCV_CPU_TYPE_NAME("sifive-e34") #define TYPE_RISCV_CPU_SIFIVE_E51 RISCV_CPU_TYPE_NAME("sifive-e51") diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 8deba3d16d..4761ebad42 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -154,6 +154,16 @@ static void rv32gcsu_priv1_10_0_cpu_init(Object *obj) set_feature(env, RISCV_FEATURE_PMP); } +static void rv32imcu_nommu_cpu_init(Object *obj) +{ + CPURISCVState *env = &RISCV_CPU(obj)->env; + set_misa(env, RV32 | RVI | RVM | RVC | RVU); + set_priv_version(env, PRIV_VERSION_1_10_0); + set_resetvec(env, 0x8090); + set_feature(env, RISCV_FEATURE_PMP); + qdev_prop_set_bit(DEVICE(obj), "mmu", false); +} + static void rv32imacu_nommu_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; @@ -618,6 +628,7 @@ static const TypeInfo riscv_cpu_type_infos[] = { DEFINE_CPU(TYPE_RISCV_CPU_ANY, riscv_any_cpu_init), #if defined(TARGET_RISCV32) DEFINE_CPU(TYPE_RISCV_CPU_BASE32, riscv_base32_cpu_init), + DEFINE_CPU(TYPE_RISCV_CPU_IBEX, rv32imcu_nommu_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32imacu_nommu_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34, rv32imafcu_nommu_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34, rv32gcsu_priv1_10_0_cpu_init), -- 2.26.2
