target/riscv: cpu: Set reset vector based on the configured property value

Now that we have the newly introduced 'resetvec' property in the
RISC-V CPU and HART, instead of hard-coding the reset vector addr
in the CPU's instance_init(), move that to riscv_cpu_realize()
based on the configured property value from the RISC-V machines.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <1598924352-89526-4-git-send-email-bmeng.cn@gmail.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

hw/riscv/opentitan.c

@@ -111,6 +111,7 @@ static void lowrisc_ibex_soc_realize(DeviceState *dev_soc, Error **errp)
                             &error_abort);
     object_property_set_int(OBJECT(&s->cpus), "num-harts", ms->smp.cpus,
                             &error_abort);
+    object_property_set_int(OBJECT(&s->cpus), "resetvec", 0x8090, &error_abort);
     sysbus_realize(SYS_BUS_DEVICE(&s->cpus), &error_abort);
 
     /* Boot ROM */

hw/riscv/sifive_e.c

@@ -177,6 +177,7 @@ static void sifive_e_soc_init(Object *obj)
     object_initialize_child(obj, "cpus", &s->cpus, TYPE_RISCV_HART_ARRAY);
     object_property_set_int(OBJECT(&s->cpus), "num-harts", ms->smp.cpus,
                             &error_abort);
+    object_property_set_int(OBJECT(&s->cpus), "resetvec", 0x1004, &error_abort);
     object_initialize_child(obj, "riscv.sifive.e.gpio0", &s->gpio,
                             TYPE_SIFIVE_GPIO);
 }

hw/riscv/sifive_u.c

@@ -611,6 +611,7 @@ static void sifive_u_soc_instance_init(Object *obj)
     qdev_prop_set_uint32(DEVICE(&s->e_cpus), "num-harts", 1);
     qdev_prop_set_uint32(DEVICE(&s->e_cpus), "hartid-base", 0);
     qdev_prop_set_string(DEVICE(&s->e_cpus), "cpu-type", SIFIVE_E_CPU);
+    qdev_prop_set_uint64(DEVICE(&s->e_cpus), "resetvec", 0x1004);
 
     object_initialize_child(obj, "u-cluster", &s->u_cluster, TYPE_CPU_CLUSTER);
     qdev_prop_set_uint32(DEVICE(&s->u_cluster), "cluster-id", 1);
@@ -620,6 +621,7 @@ static void sifive_u_soc_instance_init(Object *obj)
     qdev_prop_set_uint32(DEVICE(&s->u_cpus), "num-harts", ms->smp.cpus - 1);
     qdev_prop_set_uint32(DEVICE(&s->u_cpus), "hartid-base", 1);
     qdev_prop_set_string(DEVICE(&s->u_cpus), "cpu-type", SIFIVE_U_CPU);
+    qdev_prop_set_uint64(DEVICE(&s->u_cpus), "resetvec", 0x1004);
 
     object_initialize_child(obj, "prci", &s->prci, TYPE_SIFIVE_U_PRCI);
     object_initialize_child(obj, "otp", &s->otp, TYPE_SIFIVE_U_OTP);

target/riscv/cpu.c

@@ -139,7 +139,6 @@ static void riscv_any_cpu_init(Object *obj)
     CPURISCVState *env = &RISCV_CPU(obj)->env;
     set_misa(env, RVXLEN | RVI | RVM | RVA | RVF | RVD | RVC | RVU);
     set_priv_version(env, PRIV_VERSION_1_11_0);
-    set_resetvec(env, DEFAULT_RSTVEC);
 }
 
 static void riscv_base_cpu_init(Object *obj)
@@ -147,7 +146,6 @@ static void riscv_base_cpu_init(Object *obj)
     CPURISCVState *env = &RISCV_CPU(obj)->env;
     /* We set this in the realise function */
     set_misa(env, 0);
-    set_resetvec(env, DEFAULT_RSTVEC);
 }
 
 static void rvxx_sifive_u_cpu_init(Object *obj)
@@ -155,7 +153,6 @@ static void rvxx_sifive_u_cpu_init(Object *obj)
     CPURISCVState *env = &RISCV_CPU(obj)->env;
     set_misa(env, RVXLEN | RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
     set_priv_version(env, PRIV_VERSION_1_10_0);
-    set_resetvec(env, 0x1004);
 }
 
 static void rvxx_sifive_e_cpu_init(Object *obj)
@@ -163,7 +160,6 @@ static void rvxx_sifive_e_cpu_init(Object *obj)
     CPURISCVState *env = &RISCV_CPU(obj)->env;
     set_misa(env, RVXLEN | RVI | RVM | RVA | RVC | RVU);
     set_priv_version(env, PRIV_VERSION_1_10_0);
-    set_resetvec(env, 0x1004);
     qdev_prop_set_bit(DEVICE(obj), "mmu", false);
 }
 
@@ -174,7 +170,6 @@ static void rv32_ibex_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);
     qdev_prop_set_bit(DEVICE(obj), "mmu", false);
 }
 
@@ -384,6 +379,8 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
         set_feature(env, RISCV_FEATURE_PMP);
     }
 
+    set_resetvec(env, cpu->cfg.resetvec);
+
     /* If misa isn't set (rv32 and rv64 machines) set it here */
     if (!env->misa) {
         /* Do some ISA extension error checking */