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- /*-
- * SPDX-License-Identifier: BSD-2-Clause
- *
- * Copyright (c) 2019 Ruslan Bukin <br@bsdpad.com>
- *
- * This software was developed by SRI International and the University of
- * Cambridge Computer Laboratory (Department of Computer Science and
- * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
- * DARPA SSITH research programme.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- #include <sys/param.h>
- #include <sys/systm.h>
- #include <sys/kernel.h>
- #include <sys/module.h>
- #include <dev/fdt/simplebus.h>
- #include <dev/fdt/fdt_common.h>
- #include <dev/ofw/ofw_bus_subr.h>
- struct firmware_softc {
- struct simplebus_softc simplebus_sc;
- device_t dev;
- };
- static int
- firmware_probe(device_t dev)
- {
- phandle_t node;
- node = ofw_bus_get_node(dev);
- /*
- * The firmware node has no property compatible.
- * Look for a known child.
- */
- if (!fdt_depth_search_compatible(node, "intel,stratix10-svc", 0))
- return (ENXIO);
- if (!ofw_bus_status_okay(dev))
- return (ENXIO);
- device_set_desc(dev, "Firmware node");
- return (BUS_PROBE_DEFAULT);
- }
- static int
- firmware_attach(device_t dev)
- {
- struct firmware_softc *sc;
- phandle_t node;
- sc = device_get_softc(dev);
- sc->dev = dev;
- node = ofw_bus_get_node(dev);
- if (node == -1)
- return (ENXIO);
- simplebus_init(dev, node);
- /*
- * Allow devices to identify.
- */
- bus_generic_probe(dev);
- /*
- * Now walk the OFW tree and attach top-level devices.
- */
- for (node = OF_child(node); node > 0; node = OF_peer(node))
- simplebus_add_device(dev, node, 0, NULL, -1, NULL);
- return (bus_generic_attach(dev));
- }
- static int
- firmware_detach(device_t dev)
- {
- return (0);
- }
- static device_method_t firmware_methods[] = {
- DEVMETHOD(device_probe, firmware_probe),
- DEVMETHOD(device_attach, firmware_attach),
- DEVMETHOD(device_detach, firmware_detach),
- DEVMETHOD_END
- };
- DEFINE_CLASS_1(firmware, firmware_driver, firmware_methods,
- sizeof(struct firmware_softc), simplebus_driver);
- static devclass_t firmware_devclass;
- EARLY_DRIVER_MODULE(firmware, simplebus, firmware_driver, firmware_devclass,
- 0, 0, BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);
- MODULE_VERSION(firmware, 1);
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