x86: q35: add 'wdat' property
Used for enabling WDAT based watchdog for builtin iTCO watchdog. Usage: -M q35,wdat={on|off} By default it is disabled. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Zhao Liu <zhao1.liu@intel.com> Reviewed-by: Ani Sinha <anisinha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-Id: <20260303092532.2410177-3-imammedo@redhat.com>
Igor Mammedov committed
Mar 3, 2026 at 10:25 UTC
d30189cce17038ecaeaaacbfee9ab2c1a07c80fa
2 files changed
+19
hw/i386/pc_q35.c
+18
@@ -331,6 +331,18 @@ static void pc_q35_init(MachineState *machine)
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}
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}
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+static bool pc_q35_machine_get_wdat(Object *o, Error **errp)
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+{
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+ PCMachineState *pcms = PC_MACHINE(o);
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+ return pcms->wdat_enabled;
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+}
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+
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+static void pc_q35_machine_set_wdat(Object *o, bool value, Error **errp)
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+{
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+ PCMachineState *pcms = PC_MACHINE(o);
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+ pcms->wdat_enabled = value;
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+}
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+
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#define DEFINE_Q35_MACHINE(major, minor) \
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DEFINE_PC_VER_MACHINE(pc_q35, "pc-q35", pc_q35_init, false, NULL, major, minor);
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@@ -343,6 +355,7 @@ static void pc_q35_init(MachineState *machine)
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static void pc_q35_machine_options(MachineClass *m)
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{
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PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
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+ ObjectClass *oc = OBJECT_CLASS(m);
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pcmc->pci_root_uid = 0;
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pcmc->default_cpu_version = 1;
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@@ -361,6 +374,11 @@ static void pc_q35_machine_options(MachineClass *m)
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machine_class_allow_dynamic_sysbus_dev(m, TYPE_RAMFB_DEVICE);
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machine_class_allow_dynamic_sysbus_dev(m, TYPE_VMBUS_BRIDGE);
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machine_class_allow_dynamic_sysbus_dev(m, TYPE_UEFI_VARS_X64);
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+ object_class_property_add_bool(oc, "wdat",
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+ pc_q35_machine_get_wdat, pc_q35_machine_set_wdat);
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+ object_class_property_set_description(oc, "wdat",
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+ "Enable WDAT watchdog support. Default: off");
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+
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compat_props_add(m->compat_props,
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pc_q35_compat_defaults, pc_q35_compat_defaults_len);
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}
include/hw/i386/pc.h
+1
@@ -45,6 +45,7 @@ typedef struct PCMachineState {
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const char *south_bridge;
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bool acpi_build_enabled;
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+ bool wdat_enabled;
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bool smbus_enabled;
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bool sata_enabled;
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bool hpet_enabled;