hw/arm/msf2-som: Exit when the cpu is not the expected one

This machine correctly defines its default_cpu_type to cortex-m3
and report an error if the user requested another cpu_type,
however it does not exit, and this can confuse users trying
to use another core:

  $ qemu-system-arm -M emcraft-sf2 -cpu cortex-m4 -kernel test-m4.elf
  qemu-system-arm: This board can only be used with CPU cortex-m3-arm-cpu
  [output related to M3 core ...]

The CPU is indeed a M3 core:

  (qemu) info qom-tree
  /machine (emcraft-sf2-machine)
    /unattached (container)
      /device[0] (msf2-soc)
        /armv7m (armv7m)
          /cpu (cortex-m3-arm-cpu)

Add the missing exit() call to return to the shell.

Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
Reviewed-by: Alistair Francis <[email protected]>
Reviewed-by: Eduardo Habkost <[email protected]>
Message-id: 20190617160136[email protected]
Signed-off-by: Peter Maydell <[email protected]>

diff --git a/hw/arm/msf2-som.c b/hw/arm/msf2-som.c
index 8c550a8bddc1283375129a7aba9013592f6004e9..2c9984bb3b879f21427d9bf81e82d056b7d8d408 100644 (file)
--- a/hw/arm/msf2-som.c
+++ b/hw/arm/msf2-som.c
@@ -53,6 +53,7 @@ static void emcraft_sf2_s2s010_init(MachineState *machine)
     if (strcmp(machine->cpu_type, mc->default_cpu_type) != 0) {
         error_report("This board can only be used with CPU %s",
                      mc->default_cpu_type);
+        exit(1);
     }
 
     memory_region_init_ram(ddr, NULL, "ddr-ram", DDR_SIZE,