1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1996-2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * Implementation of the vestigial bootops vector for platforms using the 31 * 1275-like boot interfaces. 32 */ 33 34 #include <sys/types.h> 35 #include <sys/bootconf.h> 36 #include <sys/param.h> 37 #include <sys/obpdefs.h> 38 #include <sys/promif.h> 39 #include <sys/salib.h> 40 #include <sys/boot.h> 41 #include <stddef.h> 42 #include "boot_plat.h" 43 44 #ifdef DEBUG 45 extern int debug; 46 #else 47 static const int debug = 0; 48 #endif 49 50 #define dprintf if (debug) printf 51 52 extern void closeall(int); 53 54 /* 55 * This is the number for this version of bootops, which is vestigial. 56 * Standalones that require the old bootops will look in bootops.bsys_version, 57 * see this number is higher than they expect and fail gracefully. 58 * They can make this "peek" successfully even if they are ILP32 programs. 59 */ 60 int boot_version = BO_VERSION; 61 62 struct bootops bootops; 63 64 void 65 setup_bootops(void) 66 { 67 /* sanity-check bsys_printf - old kernels need to fail with a message */ 68 #if !defined(lint) 69 if (offsetof(struct bootops, bsys_printf) != 60) { 70 printf("boot: bsys_printf is at offset 0x%lx instead of 60\n" 71 "boot: this will likely make old kernels die without " 72 "printing a message.\n", 73 offsetof(struct bootops, bsys_printf)); 74 } 75 /* sanity-check bsys_1275_call - if it moves, kernels cannot boot */ 76 if (offsetof(struct bootops, bsys_1275_call) != 24) { 77 printf("boot: bsys_1275_call is at offset 0x%lx instead of 24\n" 78 "boot: this will likely break the kernel\n", 79 offsetof(struct bootops, bsys_1275_call)); 80 } 81 #endif 82 bootops.bsys_version = boot_version; 83 bootops.bsys_1275_call = (uint64_t)boot1275_entry; 84 /* so old kernels die with a message */ 85 bootops.bsys_printf = (uint32_t)boot_fail_gracefully; 86 87 if (!memlistpage) /* paranoia runs rampant */ 88 prom_panic("\nMemlistpage not setup yet."); 89 /* 90 * The memory list should always be updated last. The prom 91 * calls which are made to update a memory list may have the 92 * undesirable affect of claiming physical memory. This may 93 * happen after the kernel has created its page free list. 94 * The kernel deals with this by comparing the n and n-1 95 * snapshots of memory. Updating the memory available list 96 * last guarantees we will have a current, accurate snapshot. 97 * See bug #1260786. 98 */ 99 update_memlist("virtual-memory", "available", &vfreelistp); 100 update_memlist("memory", "available", &pfreelistp); 101 102 dprintf("\nPhysinstalled: "); 103 if (debug) print_memlist(pinstalledp); 104 dprintf("\nPhysfree: "); 105 if (debug) print_memlist(pfreelistp); 106 dprintf("\nVirtfree: "); 107 if (debug) print_memlist(vfreelistp); 108 } 109 110 void 111 install_memlistptrs(void) 112 { 113 114 /* prob only need 1 page for now */ 115 memlistextent = tablep - memlistpage; 116 117 dprintf("physinstalled = %p\n", (void *)pinstalledp); 118 dprintf("physavail = %p\n", (void *)pfreelistp); 119 dprintf("virtavail = %p\n", (void *)vfreelistp); 120 dprintf("extent = 0x%lx\n", memlistextent); 121 } 122 123 /* 124 * A word of explanation is in order. 125 * This routine is meant to be called during 126 * boot_release(), when the kernel is trying 127 * to ascertain the current state of memory 128 * so that it can use a memlist to walk itself 129 * thru kvm_init(). 130 */ 131 132 void 133 update_memlist(char *name, char *prop, struct memlist **list) 134 { 135 /* Just take another prom snapshot */ 136 *list = fill_memlists(name, prop, *list); 137 install_memlistptrs(); 138 } 139 140 /* 141 * This routine is meant to be called by the 142 * kernel to shut down all boot and prom activity. 143 * After this routine is called, PROM or boot IO is no 144 * longer possible, nor is memory allocation. 145 */ 146 void 147 kern_killboot(void) 148 { 149 if (verbosemode) { 150 dprintf("Entering boot_release()\n"); 151 dprintf("\nPhysinstalled: "); 152 if (debug) print_memlist(pinstalledp); 153 dprintf("\nPhysfree: "); 154 if (debug) print_memlist(pfreelistp); 155 dprintf("\nVirtfree: "); 156 if (debug) print_memlist(vfreelistp); 157 } 158 if (debug) { 159 dprintf("Calling quiesce_io()\n"); 160 prom_enter_mon(); 161 } 162 163 /* close all open devices */ 164 closeall(1); 165 166 /* 167 * Now we take YAPS (yet another Prom snapshot) of 168 * memory, just for safety sake. 169 * 170 * The memory list should always be updated last. The prom 171 * calls which are made to update a memory list may have the 172 * undesirable affect of claiming physical memory. This may 173 * happen after the kernel has created its page free list. 174 * The kernel deals with this by comparing the n and n-1 175 * snapshots of memory. Updating the memory available list 176 * last guarantees we will have a current, accurate snapshot. 177 * See bug #1260786. 178 */ 179 update_memlist("virtual-memory", "available", &vfreelistp); 180 update_memlist("memory", "available", &pfreelistp); 181 182 if (verbosemode) { 183 dprintf("physinstalled = %p\n", (void *)pinstalledp); 184 dprintf("physavail = %p\n", (void *)pfreelistp); 185 dprintf("virtavail = %p\n", (void *)vfreelistp); 186 dprintf("extent = 0x%lx\n", memlistextent); 187 dprintf("Leaving boot_release()\n"); 188 189 dprintf("Physinstalled: \n"); 190 if (debug) 191 print_memlist(pinstalledp); 192 193 dprintf("Physfree:\n"); 194 if (debug) 195 print_memlist(pfreelistp); 196 197 dprintf("Virtfree: \n"); 198 if (debug) 199 print_memlist(vfreelistp); 200 } 201 202 #ifdef DEBUG_MMU 203 dump_mmu(); 204 prom_enter_mon(); 205 #endif 206 } 207 208 void 209 boot_fail_gracefully(void) 210 { 211 prom_panic( 212 "mismatched version of /boot interface: new boot, old kernel"); 213 } 214