1 /* $NetBSD: autoconf.c,v 1.7 2024/08/15 07:06:35 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 34 __RCSID("$NetBSD: autoconf.c,v 1.7 2024/08/15 07:06:35 skrll Exp $"); 35 36 #include <sys/param.h> 37 38 #include <sys/buf.h> 39 #include <sys/conf.h> 40 #include <sys/cpu.h> 41 #include <sys/device.h> 42 #include <sys/reboot.h> 43 #include <sys/systm.h> 44 45 #include <machine/sysreg.h> 46 47 #include <dev/fdt/fdt_boot.h> 48 49 void 50 cpu_configure(void) 51 { 52 (void)splhigh(); 53 54 config_rootfound("mainbus", NULL); 55 56 /* Time to start taking interrupts so lets open the flood gates ... */ 57 spl0(); 58 } 59 60 /* 61 * Set up the root device from the boot args. 62 * 63 * cpu_bootconf() is called before RAIDframe root detection, 64 * and cpu_rootconf() is called after. 65 */ 66 void 67 cpu_bootconf(void) 68 { 69 #ifndef MEMORY_DISK_IS_ROOT 70 fdt_cpu_rootconf(); 71 #endif 72 } 73 74 void 75 cpu_rootconf(void) 76 { 77 cpu_bootconf(); 78 aprint_normal("boot device: %s\n", 79 booted_device != NULL ? device_xname(booted_device) : "<unknown>"); 80 rootconf(); 81 } 82 83 void 84 device_register(device_t self, void *aux) 85 { 86 87 if (device_is_a(self, "mainbus")) { 88 fdt_setup_initrd(); 89 } 90 } 91