stubs.c revision 1.16
1 /* $NetBSD: stubs.c,v 1.16 2006/10/21 05:54:31 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1994-1998 Mark Brinicombe. 5 * Copyright (c) 1994 Brini. 6 * All rights reserved. 7 * 8 * This code is derived from software written for Brini by Mark Brinicombe 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by Mark Brinicombe 21 * for the NetBSD Project. 22 * 4. The name of the company nor the name of the author may be used to 23 * endorse or promote products derived from this software without specific 24 * prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 27 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 28 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 29 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 30 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 31 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 32 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * Routines that are temporary or do not have a home yet. 39 * 40 * Created : 17/09/94 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: stubs.c,v 1.16 2006/10/21 05:54:31 mrg Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/errno.h> 49 #include <sys/proc.h> 50 #include <sys/conf.h> 51 #include <sys/msgbuf.h> 52 #include <uvm/uvm_extern.h> 53 #include <machine/cpu.h> 54 #include <machine/intr.h> 55 #include <machine/bootconfig.h> 56 #include <machine/pcb.h> 57 #include <arm/arm32/machdep.h> 58 59 extern dev_t dumpdev; 60 61 /* 62 * These variables are needed by /sbin/savecore 63 */ 64 u_int32_t dumpmag = 0x8fca0101; /* magic number */ 65 int dumpsize = 0; /* pages */ 66 long dumplo = 0; /* blocks */ 67 68 struct pcb dumppcb; 69 70 /* 71 * This is called by main to set dumplo and dumpsize. 72 * Dumps always skip the first CLBYTES of disk space 73 * in case there might be a disk label stored there. 74 * If there is extra space, put dump at the end to 75 * reduce the chance that swapping trashes it. 76 */ 77 78 void 79 cpu_dumpconf() 80 { 81 const struct bdevsw *bdev; 82 int nblks; /* size of dump area */ 83 84 if (dumpdev == NODEV) 85 return; 86 bdev = bdevsw_lookup(dumpdev); 87 if (bdev == NULL) { 88 dumpdev = NODEV; 89 return; 90 } 91 if (bdev->d_psize == NULL) 92 return; 93 nblks = (*bdev->d_psize)(dumpdev); 94 if (nblks <= ctod(1)) 95 return; 96 97 dumpsize = physmem; 98 99 /* Always skip the first CLBYTES, in case there is a label there. */ 100 if (dumplo < ctod(1)) 101 dumplo = ctod(1); 102 103 /* Put dump at end of partition, and make it fit. */ 104 if (dumpsize > dtoc(nblks - dumplo)) 105 dumpsize = dtoc(nblks - dumplo); 106 if (dumplo < nblks - ctod(dumpsize)) 107 dumplo = nblks - ctod(dumpsize); 108 } 109 110 /* This should be moved to machdep.c */ 111 112 extern char *memhook; /* XXX */ 113 114 /* 115 * Doadump comes here after turning off memory management and 116 * getting on the dump stack, either when called above, or by 117 * the auto-restart code. 118 */ 119 120 void 121 dumpsys() 122 { 123 const struct bdevsw *bdev; 124 daddr_t blkno; 125 int psize; 126 int error; 127 int addr; 128 int block; 129 int len; 130 vaddr_t dumpspace; 131 132 /* Save registers. */ 133 savectx(&dumppcb); 134 /* flush everything out of caches */ 135 cpu_dcache_wbinv_all(); 136 137 if (dumpdev == NODEV) 138 return; 139 if (dumpsize == 0) { 140 cpu_dumpconf(); 141 if (dumpsize == 0) 142 return; 143 } 144 if (dumplo <= 0) { 145 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 146 minor(dumpdev)); 147 return; 148 } 149 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 150 minor(dumpdev), dumplo); 151 152 blkno = dumplo; 153 dumpspace = (vaddr_t) memhook; 154 155 bdev = bdevsw_lookup(dumpdev); 156 if (bdev == NULL || bdev->d_psize == NULL) 157 return; 158 psize = (*bdev->d_psize)(dumpdev); 159 printf("dump "); 160 if (psize == -1) { 161 printf("area unavailable\n"); 162 return; 163 } 164 165 error = 0; 166 len = 0; 167 168 for (block = 0; block < bootconfig.dramblocks && error == 0; ++block) { 169 addr = bootconfig.dram[block].address; 170 for (;addr < (bootconfig.dram[block].address 171 + (bootconfig.dram[block].pages * PAGE_SIZE)); 172 addr += PAGE_SIZE) { 173 if ((len % (1024*1024)) == 0) 174 printf("%d ", len / (1024*1024)); 175 pmap_kenter_pa(dumpspace, addr, VM_PROT_READ); 176 pmap_update(pmap_kernel()); 177 178 error = (*bdev->d_dump)(dumpdev, 179 blkno, (caddr_t) dumpspace, PAGE_SIZE); 180 pmap_kremove(dumpspace, PAGE_SIZE); 181 pmap_update(pmap_kernel()); 182 if (error) break; 183 blkno += btodb(PAGE_SIZE); 184 len += PAGE_SIZE; 185 } 186 } 187 188 switch (error) { 189 case ENXIO: 190 printf("device bad\n"); 191 break; 192 193 case EFAULT: 194 printf("device not ready\n"); 195 break; 196 197 case EINVAL: 198 printf("area improper\n"); 199 break; 200 201 case EIO: 202 printf("i/o error\n"); 203 break; 204 205 case EINTR: 206 printf("aborted from console\n"); 207 break; 208 209 default: 210 printf("succeeded\n"); 211 break; 212 } 213 printf("\n\n"); 214 delay(1000000); 215 } 216 217 /* End of stubs.c */ 218
Indexes created Sat Sep 27 14:09:57 GMT 2025