For target/mips, the CPU type name is always the combination of the
CPU model name and suffix. The CPU model names have been shown
correctly in mips_cpu_list(), which fetches the CPU model names from
the pre-defined array. It's different from other targets and lack
of flexibility.

Implement mips_cpu_list() by fetching the CPU model names from the
available CPU classes. Besides, the retrieved class needs to be
validated before it's returned in mips_cpu_class_by_name(), as other
targets do.

Signed-off-by: Gavin Shan <gshan@redhat.com>
---
 target/mips/cpu-defs.c.inc         |  9 ---------
 target/mips/cpu.c                  | 25 ++++++++++++++++++++++++-
 target/mips/sysemu/mips-qmp-cmds.c |  3 +--
 3 files changed, 25 insertions(+), 12 deletions(-)

diff --git a/target/mips/cpu-defs.c.inc b/target/mips/cpu-defs.c.inc
index c0c389c59a..fbf787d8ce 100644
--- a/target/mips/cpu-defs.c.inc
+++ b/target/mips/cpu-defs.c.inc
@@ -1018,15 +1018,6 @@ const mips_def_t mips_defs[] =
 };
 const int mips_defs_number = ARRAY_SIZE(mips_defs);
 
-void mips_cpu_list(void)
-{
-    int i;
-
-    for (i = 0; i < ARRAY_SIZE(mips_defs); i++) {
-        qemu_printf("MIPS '%s'\n", mips_defs[i].name);
-    }
-}
-
 static void fpu_init (CPUMIPSState *env, const mips_def_t *def)
 {
     int i;
diff --git a/target/mips/cpu.c b/target/mips/cpu.c
index 63da1948fd..3431acbd99 100644
--- a/target/mips/cpu.c
+++ b/target/mips/cpu.c
@@ -532,7 +532,12 @@ static ObjectClass *mips_cpu_class_by_name(const char *cpu_model)
     typename = mips_cpu_type_name(cpu_model);
     oc = object_class_by_name(typename);
     g_free(typename);
-    return oc;
+    if (object_class_dynamic_cast(oc, TYPE_MIPS_CPU) &&
+        !object_class_is_abstract(oc)) {
+        return oc;
+    }
+
+    return NULL;
 }
 
 #ifndef CONFIG_USER_ONLY
@@ -566,6 +571,24 @@ static const struct TCGCPUOps mips_tcg_ops = {
 };
 #endif /* CONFIG_TCG */
 
+static void mips_cpu_list_entry(gpointer data, gpointer user_data)
+{
+    const char *typename = object_class_get_name(OBJECT_CLASS(data));
+    char *model = cpu_model_from_type(typename);
+
+    qemu_printf("  %s\n", model);
+    g_free(model);
+}
+
+void mips_cpu_list(void)
+{
+    GSList *list;
+    list = object_class_get_list_sorted(TYPE_MIPS_CPU, false);
+    qemu_printf("Available CPUs:\n");
+    g_slist_foreach(list, mips_cpu_list_entry, NULL);
+    g_slist_free(list);
+}
+
 static void mips_cpu_class_init(ObjectClass *c, void *data)
 {
     MIPSCPUClass *mcc = MIPS_CPU_CLASS(c);
diff --git a/target/mips/sysemu/mips-qmp-cmds.c b/target/mips/sysemu/mips-qmp-cmds.c
index 6db4626412..7340ac70ba 100644
--- a/target/mips/sysemu/mips-qmp-cmds.c
+++ b/target/mips/sysemu/mips-qmp-cmds.c
@@ -19,8 +19,7 @@ static void mips_cpu_add_definition(gpointer data, gpointer user_data)
 
     typename = object_class_get_name(oc);
     info = g_malloc0(sizeof(*info));
-    info->name = g_strndup(typename,
-                           strlen(typename) - strlen("-" TYPE_MIPS_CPU));
+    info->name = cpu_model_from_type(typename);
     info->q_typename = g_strdup(typename);
 
     QAPI_LIST_PREPEND(*cpu_list, info);
-- 
2.41.0