[RFC PATCH v3 1/2] Adding Andes AX25 CPU model

[Ruinland Chuan-Tzu Tsai]

From: Ruinaldn ChuanTzu Tsai <ruinland@andestech.com>

Adding the skeleton of Andes Technology AX25 CPU model for the future commits,
which will utilize custom/vendor CSR handling mechaism.
---
 target/riscv/cpu.c | 8 ++++++++
 target/riscv/cpu.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index ddea8fbeeb..4ae21cbf9b 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -159,6 +159,13 @@ static void rv64_base_cpu_init(Object *obj)
     set_misa(env, RV64);
 }
 
+static void ax25_cpu_init(Object *obj)
+{
+    CPURISCVState *env = &RISCV_CPU(obj)->env;
+    set_misa(env, RV64 | RVI | RVM | RVA | RVF | RVD | RVC | RVS | RVU);
+    set_priv_version(env, PRIV_VERSION_1_10_0);
+}
+
 static void rv64_sifive_u_cpu_init(Object *obj)
 {
     CPURISCVState *env = &RISCV_CPU(obj)->env;
@@ -705,6 +712,7 @@ static const TypeInfo riscv_cpu_type_infos[] = {
     DEFINE_CPU(TYPE_RISCV_CPU_SIFIVE_U34,       rv32_sifive_u_cpu_init),
 #elif defined(TARGET_RISCV64)
     DEFINE_CPU(TYPE_RISCV_CPU_BASE64,           rv64_base_cpu_init),
+    DEFINE_CPU(TYPE_RISCV_CPU_AX25,             ax25_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
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 0edb2826a2..bff9af7f3f 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -37,6 +37,7 @@
 #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_AX25             RISCV_CPU_TYPE_NAME("andes-ax25")
 #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")
-- 
2.31.1