On Wed, 12 Mar 2025, Bernhard Beschow wrote:
Fixes a crash when creating the SoC object on the command line:
$ ./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)
Furthermore, the SoC object should be derived from TYPE_SYS_BUS_DEVICE such that
it gets properly reset.
Fixes: a4eefc69b237 "hw/arm: Add i.MX 8M Plus EVK board"
Reported-by: Thomas Huth <th...@redhat.com>
Suggested-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Bernhard Beschow <shen...@gmail.com>
---
include/hw/arm/fsl-imx8mp.h | 3 ++-
hw/arm/fsl-imx8mp.c | 4 +++-
hw/arm/imx8mp-evk.c | 2 +-
3 files changed, 6 insertions(+), 3 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;
diff --git a/hw/arm/fsl-imx8mp.c b/hw/arm/fsl-imx8mp.c
index 1ea98e1463..9133d49383 100644
--- a/hw/arm/fsl-imx8mp.c
+++ b/hw/arm/fsl-imx8mp.c
@@ -698,13 +698,15 @@ static void fsl_imx8mp_class_init(ObjectClass *oc, void
*data)
device_class_set_props(dc, fsl_imx8mp_properties);
dc->realize = fsl_imx8mp_realize;
+ /* Reason: SoC can only be instantiated from a board */
+ dc->user_creatable = false;
I think sysbus devices are not user creatable by default (that's why
dynamic sysbus device was introduced) so either this or the .parent change
below is enough. You can have both just in case but maybe not necessary as
other sysbus devices usually don't set user_createble either.
Regards,
BALATON Zoltan
dc->desc = "i.MX 8M Plus SoC";
}
static const TypeInfo fsl_imx8mp_types[] = {
{
.name = TYPE_FSL_IMX8MP,
- .parent = TYPE_DEVICE,
+ .parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(FslImx8mpState),
.instance_init = fsl_imx8mp_init,
.class_init = fsl_imx8mp_class_init,
diff --git a/hw/arm/imx8mp-evk.c b/hw/arm/imx8mp-evk.c
index e1a7892fd7..f17d5db466 100644
--- a/hw/arm/imx8mp-evk.c
+++ b/hw/arm/imx8mp-evk.c
@@ -37,7 +37,7 @@ static void imx8mp_evk_init(MachineState *machine)
s = FSL_IMX8MP(object_new(TYPE_FSL_IMX8MP));
object_property_add_child(OBJECT(machine), "soc", OBJECT(s));
object_property_set_uint(OBJECT(s), "fec1-phy-num", 1, &error_fatal);
- qdev_realize(DEVICE(s), NULL, &error_fatal);
+ sysbus_realize_and_unref(SYS_BUS_DEVICE(s), &error_fatal);
memory_region_add_subregion(get_system_memory(), FSL_IMX8MP_RAM_START,
machine->ram);
