Home | History | Annotate | Line # | Download | only in riscv 
      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