1 /* $NetBSD: iq31244_machdep.c,v 1.1 2009/01/09 16:23:59 briggs Exp $ */ 2 3 /* 4 * Copyright (c) 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: iq31244_machdep.c,v 1.1 2009/01/09 16:23:59 briggs Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/device.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/reboot.h> 37 38 #include <dev/i2c/m41st84var.h> 39 40 void iq31244_reboot(int); /* I80321_REBOOT */ 41 42 /* 43 * Resetting the peripherals like the IQ80321 does isn't 44 * a sufficient reset for the IQ31244. With the stock 45 * Redboot, that reset will leave it in the Redboot 46 * debugger on reinit. 47 * The IQ31244 has an M41ST84, however, that can reset 48 * the board with the watchdog. So we just set it to 49 * do so here. 50 * The wdog on the 41ST84 should probably be a real 51 * device, but for now, we just kick it here. 52 */ 53 void 54 iq31244_reboot(int howto) 55 { 56 57 /* We can't halt; just reset. */ 58 if ((howto & RB_HALT) == 0) { 59 device_t dv; 60 61 dv = device_find_by_xname("strtc0"); 62 if (dv == NULL) 63 { 64 printf("No strtc0! Reset will probably fail!\n"); 65 return; 66 } 67 68 /* 69 * 0x80 == steer to reset 70 * 0x04 == multiplier 1, resolution 1/16s 71 */ 72 strtc_wdog_config(device_private(dv), 0x84); 73 delay(10000); 74 } 75 } 76