diff --git a/hw/riscv/riscv_hart.c b/hw/riscv/riscv_hart.c
index 6620e41cb7..5b98227db6 100644
--- a/hw/riscv/riscv_hart.c
+++ b/hw/riscv/riscv_hart.c
@@ -29,6 +29,7 @@
 
 static Property riscv_harts_props[] = {
     DEFINE_PROP_UINT32("num-harts", RISCVHartArrayState, num_harts, 1),
+    DEFINE_PROP_UINT32("hartid-base", RISCVHartArrayState, hartid_base, 0),
     DEFINE_PROP_STRING("cpu-type", RISCVHartArrayState, cpu_type),
     DEFINE_PROP_END_OF_LIST(),
 };
@@ -47,7 +48,7 @@ static void riscv_hart_realize(RISCVHartArrayState *s, int idx,
     object_initialize_child(OBJECT(s), "harts[*]", &s->harts[idx],
                             sizeof(RISCVCPU), cpu_type,
                             &error_abort, NULL);
-    s->harts[idx].env.mhartid = idx;
+    s->harts[idx].env.mhartid = s->hartid_base + idx;
     qemu_register_reset(riscv_harts_cpu_reset, &s->harts[idx]);
     object_property_set_bool(OBJECT(&s->harts[idx]), true,
                              "realized", &err);
diff --git a/include/hw/riscv/riscv_hart.h b/include/hw/riscv/riscv_hart.h
index 3b52b50571..c75856fa73 100644
--- a/include/hw/riscv/riscv_hart.h
+++ b/include/hw/riscv/riscv_hart.h
@@ -35,6 +35,7 @@ typedef struct RISCVHartArrayState {
 
     /*< public >*/
     uint32_t num_harts;
+    uint32_t hartid_base;
     char *cpu_type;
     RISCVCPU *harts;
 } RISCVHartArrayState;