diff --git a/target-arm/cpu64.c b/target-arm/cpu64.c
index 8b2081c24649..b2ed01f6676e 100644
--- a/target-arm/cpu64.c
+++ b/target-arm/cpu64.c
@@ -123,9 +123,10 @@ static void aarch64_a57_initfn(Object *obj)
     cpu->id_isar2 = 0x21232042;
     cpu->id_isar3 = 0x01112131;
     cpu->id_isar4 = 0x00011142;
+    cpu->id_isar5 = 0x00011121;
     cpu->id_aa64pfr0 = 0x00002222;
     cpu->id_aa64dfr0 = 0x10305106;
-    cpu->id_aa64isar0 = 0x00010000;
+    cpu->id_aa64isar0 = 0x00011120;
     cpu->id_aa64mmfr0 = 0x00001124;
     cpu->clidr = 0x0a200023;
     cpu->ccsidr[0] = 0x701fe00a; /* 32KB L1 dcache */