diff options
| author | Alistair Francis <alistair.francis@wdc.com> | 2020-12-16 10:23:05 -0800 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2020-12-17 21:56:44 -0800 |
| commit | 094b072c6819f251e4cba608585f0f5f59259797 (patch) | |
| tree | 4fabcde541f254f5d9f06f5f3597e00562ef2198 /target/riscv | |
| parent | 8987cdc48120c268568cdf87ba38591809d3efd1 (diff) | |
target/riscv: cpu: Set XLEN independently from target
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Acked-by: Palmer Dabbelt <palmerdabbelt@google.com>
Message-id: 7eddba45b5d223321c031431849fdd42eceb514b.1608142916.git.alistair.francis@wdc.com
Diffstat (limited to 'target/riscv')
| -rw-r--r-- | target/riscv/cpu.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 47b738c314..254cd83f8b 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -151,14 +151,14 @@ static void riscv_any_cpu_init(Object *obj) set_priv_version(env, PRIV_VERSION_1_11_0); } -static void riscv_base_cpu_init(Object *obj) +#if defined(TARGET_RISCV64) +static void rv64_base_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; /* We set this in the realise function */ - set_misa(env, 0); + set_misa(env, RV64); } -#ifdef TARGET_RISCV64 static void rv64_sifive_u_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; @@ -174,6 +174,13 @@ static void rv64_sifive_e_cpu_init(Object *obj) qdev_prop_set_bit(DEVICE(obj), "mmu", false); } #else +static void rv32_base_cpu_init(Object *obj) +{ + CPURISCVState *env = &RISCV_CPU(obj)->env; + /* We set this in the realise function */ + set_misa(env, RV32); +} + static void rv32_sifive_u_cpu_init(Object *obj) { CPURISCVState *env = &RISCV_CPU(obj)->env; @@ -372,7 +379,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev); int priv_version = PRIV_VERSION_1_11_0; int vext_version = VEXT_VERSION_0_07_1; - target_ulong target_misa = 0; + target_ulong target_misa = env->misa; Error *local_err = NULL; cpu_exec_realizefn(cs, &local_err); @@ -407,8 +414,8 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) set_resetvec(env, cpu->cfg.resetvec); - /* If misa isn't set (rv32 and rv64 machines) set it here */ - if (!env->misa) { + /* If only XLEN is set for misa, then set misa from properties */ + if (env->misa == RV32 || env->misa == RV64) { /* Do some ISA extension error checking */ if (cpu->cfg.ext_i && cpu->cfg.ext_e) { error_setg(errp, @@ -504,7 +511,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) set_vext_version(env, vext_version); } - set_misa(env, RVXLEN | target_misa); + set_misa(env, target_misa); } riscv_cpu_register_gdb_regs_for_features(cs); @@ -655,13 +662,13 @@ 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_base_cpu_init), + DEFINE_CPU(TYPE_RISCV_CPU_BASE32, rv32_base_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_IBEX, rv32_ibex_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E31, rv32_sifive_e_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E34, rv32_imafcu_nommu_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34, rv32_sifive_u_cpu_init), #elif defined(TARGET_RISCV64) - DEFINE_CPU(TYPE_RISCV_CPU_BASE64, riscv_base_cpu_init), + DEFINE_CPU(TYPE_RISCV_CPU_BASE64, rv64_base_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_E51, rv64_sifive_e_cpu_init), DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U54, rv64_sifive_u_cpu_init), #endif |