/* $OpenBSD: autoconf.c,v 1.109 2023/01/30 10:49:04 jsg Exp $ */ /* $NetBSD: autoconf.c,v 1.20 1996/05/03 19:41:56 christos Exp $ */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * 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. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. * * @(#)autoconf.c 7.1 (Berkeley) 5/9/91 */ /* * Setup the system to run on the current machine. * * cpu_configure() is called at boot time and initializes the vba * device tables and the memory controller monitoring. Available * devices are determined (from possibilities mentioned in ioconf.c), * and the drivers are initialized. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ioapic.h" #include "acpi.h" #if NIOAPIC > 0 #include #endif #ifdef MULTIPROCESSOR #include #endif /* * The following several variables are related to * the configuration process, and are used in initializing * the machine. */ extern dev_t bootdev; /* Support for VIA C3 RNG */ extern struct timeout viac3_rnd_tmo; extern int viac3_rnd_present; void viac3_rnd(void *); extern struct timeout rdrand_tmo; extern int has_rdrand; extern int has_rdseed; void rdrand(void *); #ifdef CRYPTO void viac3_crypto_setup(void); extern int i386_has_xcrypt; #endif void unmap_startup(void) { extern int kernel_text[], endboot[]; vaddr_t p = (vaddr_t)kernel_text; do { pmap_kremove(p, PAGE_SIZE); p += PAGE_SIZE; } while (p < (vaddr_t)endboot); } /* * Determine i/o configuration for a machine. */ void cpu_configure(void) { /* * Note, on i386, configure is not running under splhigh unlike other * architectures. This fact is used by the pcmcia irq line probing. */ gdt_init(); /* XXX - pcibios uses gdt stuff */ /* Set up proc0's TSS */ i386_proc0_tss_init(); pmap_bootstrap_pae(); #if defined(MULTIPROCESSOR) || \ (NACPI > 0 && !defined(SMALL_KERNEL)) /* install the lowmem ptp after boot args for 1:1 mappings */ pmap_prealloc_lowmem_ptp(); #endif #ifdef MULTIPROCESSOR pmap_kenter_pa((vaddr_t)MP_TRAMPOLINE, /* virtual */ (paddr_t)MP_TRAMPOLINE, /* physical */ PROT_READ | PROT_WRITE | PROT_EXEC); /* protection */ pmap_kenter_pa((vaddr_t)MP_TRAMP_DATA, /* virtual */ (paddr_t)MP_TRAMP_DATA, /* physical */ PROT_READ | PROT_WRITE); /* protection */ #endif if (config_rootfound("mainbus", NULL) == NULL) panic("cpu_configure: mainbus not configured"); #if NIOAPIC > 0 ioapic_enable(); #endif proc0.p_addr->u_pcb.pcb_cr0 = rcr0(); unmap_startup(); #ifdef MULTIPROCESSOR /* propagate TSS configuration to the idle pcb's. */ cpu_init_idle_pcbs(); #endif spl0(); /* * We can not know which is our root disk, defer * until we can checksum blocks to figure it out. */ cold = 0; /* * At this point the RNG is running, and if FSXR is set we can * use it. Here we setup a periodic timeout to collect the data. */ if (viac3_rnd_present) { timeout_set(&viac3_rnd_tmo, viac3_rnd, &viac3_rnd_tmo); viac3_rnd(&viac3_rnd_tmo); } if (has_rdrand || has_rdseed) { timeout_set(&rdrand_tmo, rdrand, &rdrand_tmo); rdrand(&rdrand_tmo); } #ifdef CRYPTO /* * Also, if the chip has crypto available, enable it. */ if (i386_has_xcrypt) viac3_crypto_setup(); #endif } void device_register(struct device *dev, void *aux) { } /* * Now that we are fully operational, we can checksum the * disks, and using some heuristics, hopefully are able to * always determine the correct root disk. */ void diskconf(void) { int majdev, unit, part = 0; struct device *bootdv = NULL; dev_t tmpdev; char buf[128]; extern bios_bootmac_t *bios_bootmac; dkcsumattach(); if ((bootdev & B_MAGICMASK) == (u_int)B_DEVMAGIC) { majdev = B_TYPE(bootdev); unit = B_UNIT(bootdev); part = B_PARTITION(bootdev); snprintf(buf, sizeof buf, "%s%d%c", findblkname(majdev), unit, part + 'a'); bootdv = parsedisk(buf, strlen(buf), part, &tmpdev); } if (bios_bootmac) { struct ifnet *ifp; TAILQ_FOREACH(ifp, &ifnetlist, if_list) { if (ifp->if_type == IFT_ETHER && memcmp(bios_bootmac->mac, ((struct arpcom *)ifp)->ac_enaddr, ETHER_ADDR_LEN) == 0) break; } if (ifp) { printf("PXE boot MAC address %s, interface %s\n", ether_sprintf(bios_bootmac->mac), ifp->if_xname); #if defined(NFSCLIENT) bootdv = parsedisk(ifp->if_xname, strlen(ifp->if_xname), 0, &tmpdev); part = 0; #endif } else printf("PXE boot MAC address %s, interface %s\n", ether_sprintf(bios_bootmac->mac), "unknown"); } setroot(bootdv, part, RB_USERREQ); dumpconf(); #ifdef HIBERNATE hibernate_resume(); #endif /* HIBERNATE */ } const struct nam2blk nam2blk[] = { { "wd", 0 }, { "fd", 2 }, { "sd", 4 }, { "cd", 6 }, { "vnd", 14 }, { "rd", 17 }, { NULL, -1 } };