hw/arm/cubieboard: restrict allowed CPU type to ARM Cortex-A8

The Cubieboard has an ARM Cortex-A8.  Instead of simply ignoring a
bogus -cpu option provided by the user, give them an error message so
they know their command line is wrong.

Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Message-id: 20200227220149.6845-3-nieklinnenbank@gmail.com
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: tweaked commit message]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/hw/arm/cubieboard.c b/hw/arm/cubieboard.c
index 0195925..010375f 100644 (file)
--- a/hw/arm/cubieboard.c
+++ b/hw/arm/cubieboard.c
@@ -30,9 +30,17 @@ static struct arm_boot_info cubieboard_binfo = {
 
 static void cubieboard_init(MachineState *machine)
 {
-    AwA10State *a10 = AW_A10(object_new(TYPE_AW_A10));
+    AwA10State *a10;
     Error *err = NULL;
 
+    /* Only allow Cortex-A8 for this board */
+    if (strcmp(machine->cpu_type, ARM_CPU_TYPE_NAME("cortex-a8")) != 0) {
+        error_report("This board can only be used with cortex-a8 CPU");
+        exit(1);
+    }
+
+    a10 = AW_A10(object_new(TYPE_AW_A10));
+
     object_property_set_int(OBJECT(&a10->emac), 1, "phy-addr", &err);
     if (err != NULL) {
         error_reportf_err(err, "Couldn't set phy address: ");