target/riscv: add RVA23U64 profile

Add RVA23U64 as described in [1]. Add it as a child of RVA22U64 since
all RVA22U64 mandatory extensions are also present in RVA23U64. What's
left then is to list the mandatory extensions that are RVA23 only.

A new "rva23u64" CPU is also added.

[1] https://github.com/riscv/riscv-profiles/blob/main/src/rva23-profile.adoc

Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20250115184316.2344583-6-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

target/riscv/cpu-qom.h

@@ -40,6 +40,7 @@
 #define TYPE_RISCV_CPU_RV64E            RISCV_CPU_TYPE_NAME("rv64e")
 #define TYPE_RISCV_CPU_RVA22U64         RISCV_CPU_TYPE_NAME("rva22u64")
 #define TYPE_RISCV_CPU_RVA22S64         RISCV_CPU_TYPE_NAME("rva22s64")
+#define TYPE_RISCV_CPU_RVA23U64         RISCV_CPU_TYPE_NAME("rva23u64")
 #define TYPE_RISCV_CPU_IBEX             RISCV_CPU_TYPE_NAME("lowrisc-ibex")
 #define TYPE_RISCV_CPU_SHAKTI_C         RISCV_CPU_TYPE_NAME("shakti-c")
 #define TYPE_RISCV_CPU_SIFIVE_E31       RISCV_CPU_TYPE_NAME("sifive-e31")

target/riscv/cpu.c

@@ -2391,9 +2391,34 @@ static RISCVCPUProfile RVA22S64 = {
     }
 };
 
+/*
+ * All mandatory extensions from RVA22U64 are present
+ * in RVA23U64 so set RVA22 as a parent. We need to
+ * declare just the newly added mandatory extensions.
+ */
+static RISCVCPUProfile RVA23U64 = {
+    .u_parent = &RVA22U64,
+    .s_parent = NULL,
+    .name = "rva23u64",
+    .misa_ext = RVV,
+    .priv_spec = RISCV_PROFILE_ATTR_UNUSED,
+    .satp_mode = RISCV_PROFILE_ATTR_UNUSED,
+    .ext_offsets = {
+        CPU_CFG_OFFSET(ext_zvfhmin), CPU_CFG_OFFSET(ext_zvbb),
+        CPU_CFG_OFFSET(ext_zvkt), CPU_CFG_OFFSET(ext_zihintntl),
+        CPU_CFG_OFFSET(ext_zicond), CPU_CFG_OFFSET(ext_zimop),
+        CPU_CFG_OFFSET(ext_zcmop), CPU_CFG_OFFSET(ext_zcb),
+        CPU_CFG_OFFSET(ext_zfa), CPU_CFG_OFFSET(ext_zawrs),
+        CPU_CFG_OFFSET(ext_supm),
+
+        RISCV_PROFILE_EXT_LIST_END
+    }
+};
+
 RISCVCPUProfile *riscv_profiles[] = {
     &RVA22U64,
     &RVA22S64,
+    &RVA23U64,
     NULL,
 };
 
@@ -2880,6 +2905,13 @@ static void rva22s64_profile_cpu_init(Object *obj)
 
     RVA22S64.enabled = true;
 }
+
+static void rva23u64_profile_cpu_init(Object *obj)
+{
+    rv64i_bare_cpu_init(obj);
+
+    RVA23U64.enabled = true;
+}
 #endif
 
 static const gchar *riscv_gdb_arch_name(CPUState *cs)
@@ -3150,6 +3182,7 @@ static const TypeInfo riscv_cpu_type_infos[] = {
     DEFINE_BARE_CPU(TYPE_RISCV_CPU_RV64E,        MXL_RV64,  rv64e_bare_cpu_init),
     DEFINE_PROFILE_CPU(TYPE_RISCV_CPU_RVA22U64,  MXL_RV64,  rva22u64_profile_cpu_init),
     DEFINE_PROFILE_CPU(TYPE_RISCV_CPU_RVA22S64,  MXL_RV64,  rva22s64_profile_cpu_init),
+    DEFINE_PROFILE_CPU(TYPE_RISCV_CPU_RVA23U64,  MXL_RV64,  rva23u64_profile_cpu_init),
 #endif /* TARGET_RISCV64 */
 };