@@ -108,7 +108,17 @@ static const VMStateDescription vmstate_smbus_eeprom = {
}
};
-static void smbus_eeprom_realize(DeviceState *dev, Error **errp)
+/*
+ * Reset the EEPROM contents to the initial state on a reset. This
+ * isn't really how an EEPROM works, of course, but the general
+ * principle of QEMU is to restore function on reset to what it would
+ * be if QEMU was stopped and started.
+ *
+ * The proper thing to do would be to have a backing blockdev to hold
+ * the contents and restore that on startup, and not do this on reset.
+ * But until that time, act as if we had been stopped and restarted.
+ */
+static void smbus_eeprom_reset(DeviceState *dev)
{
SMBusEEPROMDevice *eeprom = SMBUS_EEPROM(dev);
@@ -116,6 +126,11 @@ static void smbus_eeprom_realize(DeviceState *dev, Error **errp)
eeprom->offset = 0;
}
+static void smbus_eeprom_realize(DeviceState *dev, Error **errp)
+{
+ smbus_eeprom_reset(dev);
+}
+
static Property smbus_eeprom_properties[] = {
DEFINE_PROP_PTR("data", SMBusEEPROMDevice, init_data),
DEFINE_PROP_END_OF_LIST(),
@@ -127,6 +142,7 @@ static void smbus_eeprom_class_initfn(ObjectClass *klass, void *data)
SMBusDeviceClass *sc = SMBUS_DEVICE_CLASS(klass);
dc->realize = smbus_eeprom_realize;
+ dc->reset = smbus_eeprom_reset;
sc->receive_byte = eeprom_receive_byte;
sc->write_data = eeprom_write_data;
dc->props = smbus_eeprom_properties;