hw/arm/fsl-imx8mp: Derive struct FslImx8mpState from TYPE_SYS_BUS_DEVICE

Deriving from TYPE_SYS_BUS_DEVICE fixes the SoC object to be reset upon machine
reset. It also makes the SoC implementation not user-creatable which can trigger
the following crash:

  $ ./qemu-system-aarch64  -M virt -device fsl-imx8mp
  **
  ERROR:../../devel/qemu/tcg/tcg.c:1006:tcg_register_thread: assertion failed:
  (n < tcg_max_ctxs)
  Bail out! ERROR:../../devel/qemu/tcg/tcg.c:1006:tcg_register_thread:
  assertion failed: (n < tcg_max_ctxs)
  Aborted (core dumped)

Fixes: a4eefc69b237 "hw/arm: Add i.MX 8M Plus EVK board"
Reported-by: Thomas Huth <thuth@redhat.com>
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-ID: <20250318205709.28862-3-shentey@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/hw/arm/fsl-imx8mp.h b/include/hw/arm/fsl-imx8mp.h
index bc97fc416e..22fdc0d67c 100644
--- a/include/hw/arm/fsl-imx8mp.h
+++ b/include/hw/arm/fsl-imx8mp.h
@@ -26,6 +26,7 @@
 #include "hw/timer/imx_gpt.h"
 #include "hw/usb/hcd-dwc3.h"
 #include "hw/watchdog/wdt_imx2.h"
+#include "hw/sysbus.h"
 #include "qom/object.h"
 #include "qemu/units.h"
 
@@ -49,7 +50,7 @@ enum FslImx8mpConfiguration {
 };
 
 struct FslImx8mpState {
-    DeviceState    parent_obj;
+    SysBusDevice   parent_obj;
 
     ARMCPU             cpu[FSL_IMX8MP_NUM_CPUS];
     GICv3State         gic;