Re: [PATCH v2 3/9] target/riscv: Add the lowRISC Ibex CPU

[Bin Meng <bmeng.cn@gmail.com>]

On Fri, May 8, 2020 at 3:23 AM Alistair Francis
<alistair.francis@wdc.com> wrote:
>

Please include some commit message to have a brief introduction of this new CPU.

> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
> ---
>  target/riscv/cpu.c | 10 ++++++++++
>  target/riscv/cpu.h |  1 +
>  2 files changed, 11 insertions(+)
>
> diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
> index 8f837edf8d..235101f685 100644
> --- a/target/riscv/cpu.c
> +++ b/target/riscv/cpu.c
> @@ -160,6 +160,15 @@ 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, 0x8088);
> +    set_feature(env, RISCV_FEATURE_PMP);
> +}
> +
>  static void rv32imacu_nommu_cpu_init(Object *obj)
>  {
>      CPURISCVState *env = &RISCV_CPU(obj)->env;
> @@ -620,6 +629,7 @@ 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),
> 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")
> --

Otherwise, looks good to me.
Reviewed-by: Bin Meng <bin.meng@windriver.com>

Regards,
Bin