stubs.c revision 1.13
1 /* $NetBSD: stubs.c,v 1.13 2003/04/01 23:19:09 thorpej 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/param.h> 44 #include <sys/systm.h> 45 #include <sys/errno.h> 46 #include <sys/proc.h> 47 #include <sys/conf.h> 48 #include <sys/msgbuf.h> 49 #include <uvm/uvm_extern.h> 50 #include <machine/cpu.h> 51 #include <machine/intr.h> 52 #include <machine/bootconfig.h> 53 #include <machine/pcb.h> 54 #include <arm/arm32/machdep.h> 55 56 extern dev_t dumpdev; 57 58 /* 59 * These variables are needed by /sbin/savecore 60 */ 61 u_int32_t dumpmag = 0x8fca0101; /* magic number */ 62 int dumpsize = 0; /* pages */ 63 long dumplo = 0; /* blocks */ 64 65 struct pcb dumppcb; 66 67 /* 68 * This is called by main to set dumplo and dumpsize. 69 * Dumps always skip the first CLBYTES of disk space 70 * in case there might be a disk label stored there. 71 * If there is extra space, put dump at the end to 72 * reduce the chance that swapping trashes it. 73 */ 74 75 void 76 cpu_dumpconf() 77 { 78 const struct bdevsw *bdev; 79 int nblks; /* size of dump area */ 80 81 if (dumpdev == NODEV) 82 return; 83 bdev = bdevsw_lookup(dumpdev); 84 if (bdev == NULL) 85 panic("dumpconf: bad dumpdev=0x%x", dumpdev); 86 if (bdev->d_psize == NULL) 87 return; 88 nblks = (*bdev->d_psize)(dumpdev); 89 if (nblks <= ctod(1)) 90 return; 91 92 dumpsize = physmem; 93 94 /* Always skip the first CLBYTES, in case there is a label there. */ 95 if (dumplo < ctod(1)) 96 dumplo = ctod(1); 97 98 /* Put dump at end of partition, and make it fit. */ 99 if (dumpsize > dtoc(nblks - dumplo)) 100 dumpsize = dtoc(nblks - dumplo); 101 if (dumplo < nblks - ctod(dumpsize)) 102 dumplo = nblks - ctod(dumpsize); 103 } 104 105 /* This should be moved to machdep.c */ 106 107 extern char *memhook; /* XXX */ 108 109 /* 110 * Doadump comes here after turning off memory management and 111 * getting on the dump stack, either when called above, or by 112 * the auto-restart code. 113 */ 114 115 void 116 dumpsys() 117 { 118 const struct bdevsw *bdev; 119 daddr_t blkno; 120 int psize; 121 int error; 122 int addr; 123 int block; 124 int len; 125 vaddr_t dumpspace; 126 127 /* Save registers. */ 128 savectx(&dumppcb); 129 /* flush everything out of caches */ 130 cpu_dcache_wbinv_all(); 131 132 if (dumpdev == NODEV) 133 return; 134 if (dumpsize == 0) { 135 cpu_dumpconf(); 136 if (dumpsize == 0) 137 return; 138 } 139 if (dumplo <= 0) { 140 printf("\ndump to dev %u,%u not possible\n", major(dumpdev), 141 minor(dumpdev)); 142 return; 143 } 144 printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev), 145 minor(dumpdev), dumplo); 146 147 blkno = dumplo; 148 dumpspace = (vaddr_t) memhook; 149 150 bdev = bdevsw_lookup(dumpdev); 151 if (bdev == NULL || bdev->d_psize == NULL) 152 return; 153 psize = (*bdev->d_psize)(dumpdev); 154 printf("dump "); 155 if (psize == -1) { 156 printf("area unavailable\n"); 157 return; 158 } 159 160 error = 0; 161 len = 0; 162 163 for (block = 0; block < bootconfig.dramblocks && error == 0; ++block) { 164 addr = bootconfig.dram[block].address; 165 for (;addr < (bootconfig.dram[block].address 166 + (bootconfig.dram[block].pages * PAGE_SIZE)); 167 addr += PAGE_SIZE) { 168 if ((len % (1024*1024)) == 0) 169 printf("%d ", len / (1024*1024)); 170 pmap_kenter_pa(dumpspace, addr, VM_PROT_READ); 171 pmap_update(pmap_kernel()); 172 173 error = (*bdev->d_dump)(dumpdev, 174 blkno, (caddr_t) dumpspace, PAGE_SIZE); 175 pmap_kremove(dumpspace, PAGE_SIZE); 176 pmap_update(pmap_kernel()); 177 if (error) break; 178 blkno += btodb(PAGE_SIZE); 179 len += PAGE_SIZE; 180 } 181 } 182 183 switch (error) { 184 case ENXIO: 185 printf("device bad\n"); 186 break; 187 188 case EFAULT: 189 printf("device not ready\n"); 190 break; 191 192 case EINVAL: 193 printf("area improper\n"); 194 break; 195 196 case EIO: 197 printf("i/o error\n"); 198 break; 199 200 case EINTR: 201 printf("aborted from console\n"); 202 break; 203 204 default: 205 printf("succeeded\n"); 206 break; 207 } 208 printf("\n\n"); 209 delay(1000000); 210 } 211 212 /* End of stubs.c */ 213
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