diff -urp a/linux-user/sparc/target_proc.h b/linux-user/sparc/target_proc.h
--- a/linux-user/sparc/target_proc.h	2023-03-27 15:41:42.000000000 +0200
+++ b/linux-user/sparc/target_proc.h	2023-04-01 13:54:14.709136932 +0200
@@ -8,7 +8,11 @@
 
 static int open_cpuinfo(CPUArchState *cpu_env, int fd)
 {
+#if defined(TARGET_SPARC64)
     dprintf(fd, "type\t\t: sun4u\n");
+#else
+    dprintf(fd, "type\t\t: sun4m\n");
+#endif
     return 0;
 }
 #define HAVE_ARCH_PROC_CPUINFO
diff -urp a/target/sparc/cpu.c b/target/sparc/cpu.c
--- a/target/sparc/cpu.c	2023-03-27 15:41:42.000000000 +0200
+++ b/target/sparc/cpu.c	2023-03-31 21:32:54.927008782 +0200
@@ -557,6 +557,11 @@ static const char * const feature_name[]
     [CPU_FEATURE_BIT_MUL] = "mul",
     [CPU_FEATURE_BIT_DIV] = "div",
     [CPU_FEATURE_BIT_FSMULD] = "fsmuld",
+    [CPU_FEATURE_BIT_TA0_SHUTDOWN] = "ta0shdn",
+    [CPU_FEATURE_BIT_ASR17] = "asr17",
+    [CPU_FEATURE_BIT_CACHE_CTRL] = "cachectrl",
+    [CPU_FEATURE_BIT_POWERDOWN] = "powerdown",
+    [CPU_FEATURE_BIT_CASA] = "casa",
 #endif
 };
 
@@ -896,6 +901,16 @@ static Property sparc_cpu_properties[] =
                     CPU_FEATURE_BIT_DIV, false),
     DEFINE_PROP_BIT("fsmuld",   SPARCCPU, env.def.features,
                     CPU_FEATURE_BIT_FSMULD, false),
+    DEFINE_PROP_BIT("ta0shdn",  SPARCCPU, env.def.features,
+                    CPU_FEATURE_BIT_TA0_SHUTDOWN, false),
+    DEFINE_PROP_BIT("asr17",    SPARCCPU, env.def.features,
+                    CPU_FEATURE_BIT_ASR17, false),
+    DEFINE_PROP_BIT("cachectrl",SPARCCPU, env.def.features,
+                    CPU_FEATURE_BIT_CACHE_CTRL, false),
+    DEFINE_PROP_BIT("powerdown",SPARCCPU, env.def.features,
+                    CPU_FEATURE_BIT_POWERDOWN, false),
+    DEFINE_PROP_BIT("casa",     SPARCCPU, env.def.features,
+                    CPU_FEATURE_BIT_CASA, false),
 #endif
     DEFINE_PROP_UNSIGNED("iu-version", SPARCCPU, env.def.iu_version, 0,
                          qdev_prop_uint64, target_ulong),