PowerNV: add reset, poweroff, OPAL console
Add basic power control (reset, power off) and bind ttyuX to opal console so that init will start login there. Created by: Nathan Whitehorn <nw@freebsd.org> Submitted by: Wojciech Macek <wma@freebsd.org> Sponsored by: FreeBSD Foundation
This commit is contained in:
wma
parent
689e0529b7
commit
999af6c5ea
@ -40,6 +40,8 @@ int opal_call(uint64_t token, ...);
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#define OPAL_CONSOLE_WRITE 1
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#define OPAL_CONSOLE_READ 2
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#define OPAL_CEC_POWER_DOWN 5
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#define OPAL_CEC_REBOOT 6
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#define OPAL_START_CPU 41
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#define OPAL_SUCCESS 0
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@ -439,3 +439,76 @@ uart_opal_intr(void *v)
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callout_reset(&sc->callout, sc->polltime, uart_opal_intr, sc);
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}
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static int
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opalcons_probe(device_t dev)
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{
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const char *name;
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name = ofw_bus_get_name(dev);
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if (name == NULL || strcmp(name, "consoles") != 0)
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return (ENXIO);
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device_set_desc(dev, "OPAL Consoles");
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return (BUS_PROBE_SPECIFIC);
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}
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static int
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opalcons_attach(device_t dev)
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{
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phandle_t child;
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device_t cdev;
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struct ofw_bus_devinfo *dinfo;
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for (child = OF_child(ofw_bus_get_node(dev)); child != 0;
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child = OF_peer(child)) {
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dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
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if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) {
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free(dinfo, M_DEVBUF);
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continue;
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}
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cdev = device_add_child(dev, NULL, -1);
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if (cdev == NULL) {
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device_printf(dev, "<%s>: device_add_child failed\n",
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dinfo->obd_name);
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ofw_bus_gen_destroy_devinfo(dinfo);
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free(dinfo, M_DEVBUF);
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continue;
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}
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device_set_ivars(cdev, dinfo);
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}
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return (bus_generic_attach(dev));
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}
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static const struct ofw_bus_devinfo *
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opalcons_get_devinfo(device_t dev, device_t child)
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{
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return (device_get_ivars(child));
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}
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static device_method_t opalcons_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, opalcons_probe),
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DEVMETHOD(device_attach, opalcons_attach),
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/* ofw_bus interface */
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DEVMETHOD(ofw_bus_get_devinfo, opalcons_get_devinfo),
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DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
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DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
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DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
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DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
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DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
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DEVMETHOD_END
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};
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static driver_t opalcons_driver = {
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"opalcons",
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opalcons_methods,
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0
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};
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static devclass_t opalcons_devclass;
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DRIVER_MODULE(opalcons, opal, opalcons_driver, opalcons_devclass, 0, 0);
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162
sys/powerpc/powernv/opal_dev.c
Normal file
162
sys/powerpc/powernv/opal_dev.c
Normal file
@ -0,0 +1,162 @@
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/*-
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* Copyright (c) 2015 Nathan Whitehorn
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/conf.h>
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#include <sys/clock.h>
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#include <sys/cpu.h>
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#include <sys/kernel.h>
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#include <sys/reboot.h>
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#include <sys/sysctl.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/ofw/openfirm.h>
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#include "clock_if.h"
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#include "opal.h"
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static int opaldev_probe(device_t);
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static int opaldev_attach(device_t);
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/* clock interface */
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static int opal_gettime(device_t dev, struct timespec *ts);
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static int opal_settime(device_t dev, struct timespec *ts);
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/* ofw bus interface */
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static const struct ofw_bus_devinfo *opaldev_get_devinfo(device_t dev,
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device_t child);
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static void opal_shutdown(void *arg, int howto);
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static device_method_t opaldev_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, opaldev_probe),
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DEVMETHOD(device_attach, opaldev_attach),
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/* clock interface */
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DEVMETHOD(clock_gettime, opal_gettime),
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DEVMETHOD(clock_settime, opal_settime),
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/* ofw_bus interface */
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DEVMETHOD(ofw_bus_get_devinfo, opaldev_get_devinfo),
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DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
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DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
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DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
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DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
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DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
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DEVMETHOD_END
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};
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static driver_t opaldev_driver = {
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"opal",
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opaldev_methods,
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0
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};
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static devclass_t opaldev_devclass;
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DRIVER_MODULE(opaldev, ofwbus, opaldev_driver, opaldev_devclass, 0, 0);
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static int
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opaldev_probe(device_t dev)
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{
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if (!ofw_bus_is_compatible(dev, "ibm,opal-v3"))
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return (ENXIO);
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if (opal_check() != 0)
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return (ENXIO);
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device_set_desc(dev, "OPAL Abstraction Firmware");
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return (BUS_PROBE_SPECIFIC);
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}
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static int
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opaldev_attach(device_t dev)
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{
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phandle_t child;
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device_t cdev;
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struct ofw_bus_devinfo *dinfo;
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if (0 /* XXX NOT YET TEST FOR RTC */)
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clock_register(dev, 2000);
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EVENTHANDLER_REGISTER(shutdown_final, opal_shutdown, NULL,
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SHUTDOWN_PRI_LAST);
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for (child = OF_child(ofw_bus_get_node(dev)); child != 0;
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child = OF_peer(child)) {
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dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO);
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if (ofw_bus_gen_setup_devinfo(dinfo, child) != 0) {
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free(dinfo, M_DEVBUF);
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continue;
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}
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cdev = device_add_child(dev, NULL, -1);
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if (cdev == NULL) {
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device_printf(dev, "<%s>: device_add_child failed\n",
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dinfo->obd_name);
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ofw_bus_gen_destroy_devinfo(dinfo);
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free(dinfo, M_DEVBUF);
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continue;
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}
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device_set_ivars(cdev, dinfo);
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}
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return (bus_generic_attach(dev));
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}
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static int
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opal_gettime(device_t dev, struct timespec *ts) {
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return (ENXIO);
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}
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static int
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opal_settime(device_t dev, struct timespec *ts)
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{
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return (0);
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}
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static const struct ofw_bus_devinfo *
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opaldev_get_devinfo(device_t dev, device_t child)
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{
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return (device_get_ivars(child));
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}
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static void
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opal_shutdown(void *arg, int howto)
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{
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if (howto & RB_HALT)
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opal_call(OPAL_CEC_POWER_DOWN, 0 /* Normal power off */);
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else
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opal_call(OPAL_CEC_REBOOT);
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}
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@ -324,6 +324,8 @@ powernv_smp_topo(platform_t plat)
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static void
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powernv_reset(platform_t platform)
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{
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opal_call(OPAL_CEC_REBOOT);
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}
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static void
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