1 /* $NetBSD: stubs.c,v 1.15 2005/12/11 12:16:41 christos 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 1.15 2005/12/11 12:16:41 christos 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 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 89 if (bdev->d_psize == NULL) 90 return; 91 nblks = (*bdev->d_psize)(dumpdev); 92 if (nblks <= ctod(1)) 93 return; 94 95 dumpsize = physmem; 96 97 /* Always skip the first CLBYTES, in case there is a label there. */ 98 if (dumplo < ctod(1)) 99 dumplo = ctod(1); 100 101 /* Put dump at end of partition, and make it fit. */ 102 if (dumpsize > dtoc(nblks - dumplo)) 103 dumpsize = dtoc(nblks - dumplo); 104 if (dumplo < nblks - ctod(dumpsize)) 105 dumplo = nblks - ctod(dumpsize); 106 } 107 108 /* This should be moved to machdep.c */ 109 110 extern char *memhook; /* XXX */ 111 112 /* 113 * Doadump comes here after turning off memory management and 114 * getting on the dump stack, either when called above, or by 115 * the auto-restart code. 116 */ 117 118 void 119 dumpsys() 120 { 121 const struct bdevsw *bdev; 122 daddr_t blkno; 123 int psize; 124 int error; 125 int addr; 126 int block; 127 int len; 128 vaddr_t dumpspace; 129 130 /* Save registers. */ 131 savectx(&dumppcb); 132 /* flush everything out of caches */ 133 cpu_dcache_wbinv_all(); 134 135 if (dumpdev == NODEV) 136 return; 137 if (dumpsize == 0) { 138 cpu_dumpconf(); 139 if (dumpsize == 0) 140 return; 141 } 142 if (dumplo <= 0) { 143 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 144 minor(dumpdev)); 145 return; 146 } 147 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 148 minor(dumpdev), dumplo); 149 150 blkno = dumplo; 151 dumpspace = (vaddr_t) memhook; 152 153 bdev = bdevsw_lookup(dumpdev); 154 if (bdev == NULL || bdev->d_psize == NULL) 155 return; 156 psize = (*bdev->d_psize)(dumpdev); 157 printf("dump "); 158 if (psize == -1) { 159 printf("area unavailable\n"); 160 return; 161 } 162 163 error = 0; 164 len = 0; 165 166 for (block = 0; block < bootconfig.dramblocks && error == 0; ++block) { 167 addr = bootconfig.dram[block].address; 168 for (;addr < (bootconfig.dram[block].address 169 + (bootconfig.dram[block].pages * PAGE_SIZE)); 170 addr += PAGE_SIZE) { 171 if ((len % (1024*1024)) == 0) 172 printf("%d ", len / (1024*1024)); 173 pmap_kenter_pa(dumpspace, addr, VM_PROT_READ); 174 pmap_update(pmap_kernel()); 175 176 error = (*bdev->d_dump)(dumpdev, 177 blkno, (caddr_t) dumpspace, PAGE_SIZE); 178 pmap_kremove(dumpspace, PAGE_SIZE); 179 pmap_update(pmap_kernel()); 180 if (error) break; 181 blkno += btodb(PAGE_SIZE); 182 len += PAGE_SIZE; 183 } 184 } 185 186 switch (error) { 187 case ENXIO: 188 printf("device bad\n"); 189 break; 190 191 case EFAULT: 192 printf("device not ready\n"); 193 break; 194 195 case EINVAL: 196 printf("area improper\n"); 197 break; 198 199 case EIO: 200 printf("i/o error\n"); 201 break; 202 203 case EINTR: 204 printf("aborted from console\n"); 205 break; 206 207 default: 208 printf("succeeded\n"); 209 break; 210 } 211 printf("\n\n"); 212 delay(1000000); 213 } 214 215 /* End of stubs.c */ 216