Annotation of sys/arch/arm/arm/stubs.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: stubs.c,v 1.5 2007/06/06 17:15:11 deraadt Exp $ */
! 2: /* $NetBSD: stubs.c,v 1.14 2003/07/15 00:24:42 lukem Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1994-1998 Mark Brinicombe.
! 6: * Copyright (c) 1994 Brini.
! 7: * All rights reserved.
! 8: *
! 9: * This code is derived from software written for Brini by Mark Brinicombe
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by Mark Brinicombe
! 22: * for the NetBSD Project.
! 23: * 4. The name of the company nor the name of the author may be used to
! 24: * endorse or promote products derived from this software without specific
! 25: * prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
! 28: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
! 29: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 30: * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
! 31: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 32: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 33: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 37: * SUCH DAMAGE.
! 38: *
! 39: * Routines that are temporary or do not have a home yet.
! 40: *
! 41: * Created : 17/09/94
! 42: */
! 43:
! 44: #include <sys/param.h>
! 45: #include <sys/systm.h>
! 46: #include <sys/errno.h>
! 47: #include <sys/proc.h>
! 48: #include <sys/conf.h>
! 49: #include <sys/msgbuf.h>
! 50: #include <sys/exec.h>
! 51: #include <sys/core.h>
! 52: #include <sys/kcore.h>
! 53: #include <uvm/uvm_extern.h>
! 54: #include <machine/bootconfig.h>
! 55: #include <machine/cpu.h>
! 56: #include <machine/intr.h>
! 57: #include <machine/pcb.h>
! 58: #include <arm/kcore.h>
! 59: #include <arm/machdep.h>
! 60:
! 61: extern dev_t dumpdev;
! 62:
! 63: /*
! 64: * These variables are needed by /sbin/savecore
! 65: */
! 66: u_int32_t dumpmag = 0x8fca0101; /* magic number */
! 67: int dumpsize = 0; /* pages */
! 68: long dumplo = 0; /* blocks */
! 69: cpu_kcore_hdr_t cpu_kcore_hdr;
! 70: struct pcb dumppcb;
! 71:
! 72: /*
! 73: * This is called by main to set dumplo and dumpsize.
! 74: * Dumps always skip the first CLBYTES of disk space
! 75: * in case there might be a disk label stored there.
! 76: * If there is extra space, put dump at the end to
! 77: * reduce the chance that swapping trashes it.
! 78: */
! 79:
! 80: void dumpconf(void);
! 81:
! 82: void
! 83: dumpconf(void)
! 84: {
! 85: int nblks, block;
! 86:
! 87: if (dumpdev == NODEV ||
! 88: (nblks = (bdevsw[major(dumpdev)].d_psize)(dumpdev)) == 0)
! 89: return;
! 90: if (nblks <= ctod(1))
! 91: return;
! 92:
! 93: dumpsize = physmem;
! 94:
! 95: /* Always skip the first CLBYTES, in case there is a label there. */
! 96: if (dumplo < ctod(1))
! 97: dumplo = ctod(1);
! 98:
! 99: /* Put dump at end of partition, and make it fit. */
! 100: if (dumpsize + 1 > dtoc(nblks - dumplo))
! 101: dumpsize = dtoc(nblks - dumplo) - 1;
! 102: if (dumplo < nblks - ctod(dumpsize) - 1)
! 103: dumplo = nblks - ctod(dumpsize) - 1;
! 104:
! 105: for (block = 0; block < bootconfig.dramblocks; block++) {
! 106: cpu_kcore_hdr.ram_segs[block].start =
! 107: bootconfig.dram[block].address;
! 108: cpu_kcore_hdr.ram_segs[block].size =
! 109: ptoa(bootconfig.dram[block].pages);
! 110: }
! 111: }
! 112:
! 113: /* This should be moved to machdep.c */
! 114:
! 115: extern char *memhook; /* XXX */
! 116:
! 117: /*
! 118: * Doadump comes here after turning off memory management and
! 119: * getting on the dump stack, either when called above, or by
! 120: * the auto-restart code.
! 121: */
! 122:
! 123: void
! 124: dumpsys()
! 125: {
! 126: const struct bdevsw *bdev;
! 127: daddr64_t blkno;
! 128: int psize;
! 129: int error;
! 130: int addr;
! 131: int block;
! 132: int len;
! 133: vaddr_t dumpspace;
! 134: kcore_seg_t *kseg_p;
! 135: cpu_kcore_hdr_t *chdr_p;
! 136: char dump_hdr[dbtob(1)]; /* assumes header fits in one block */
! 137:
! 138: /* Save registers. */
! 139: savectx(&dumppcb);
! 140: /* flush everything out of caches */
! 141: cpu_dcache_wbinv_all();
! 142:
! 143: if (dumpdev == NODEV)
! 144: return;
! 145: if (dumpsize == 0) {
! 146: dumpconf();
! 147: if (dumpsize == 0)
! 148: return;
! 149: }
! 150: if (dumplo <= 0) {
! 151: printf("\ndump to dev %u,%u not possible\n", major(dumpdev),
! 152: minor(dumpdev));
! 153: return;
! 154: }
! 155: printf("\ndumping to dev %u,%u offset %ld\n", major(dumpdev),
! 156: minor(dumpdev), dumplo);
! 157:
! 158: blkno = dumplo;
! 159: dumpspace = (vaddr_t) memhook;
! 160:
! 161: bdev = bdevsw_lookup(dumpdev);
! 162: if (bdev == NULL || bdev->d_psize == NULL)
! 163: return;
! 164: psize = (*bdev->d_psize)(dumpdev);
! 165: printf("dump ");
! 166: if (psize == -1) {
! 167: printf("area unavailable\n");
! 168: return;
! 169: }
! 170:
! 171: /* Setup the dump header */
! 172: kseg_p = (kcore_seg_t *)dump_hdr;
! 173: chdr_p = (cpu_kcore_hdr_t *)&dump_hdr[ALIGN(sizeof(*kseg_p))];
! 174: bzero(dump_hdr, sizeof(dump_hdr));
! 175:
! 176: CORE_SETMAGIC(*kseg_p, KCORE_MAGIC, MID_MACHINE, CORE_CPU);
! 177: kseg_p->c_size = sizeof(dump_hdr) - ALIGN(sizeof(*kseg_p));
! 178: *chdr_p = cpu_kcore_hdr;
! 179:
! 180: error = (*bdev->d_dump)(dumpdev, blkno++, (caddr_t)dump_hdr,
! 181: sizeof(dump_hdr));
! 182: if (error != 0)
! 183: goto abort;
! 184:
! 185: len = 0;
! 186: for (block = 0; block < bootconfig.dramblocks && error == 0; ++block) {
! 187: addr = bootconfig.dram[block].address;
! 188: for (;addr < (bootconfig.dram[block].address
! 189: + (bootconfig.dram[block].pages * PAGE_SIZE));
! 190: addr += PAGE_SIZE) {
! 191: if ((len % (1024*1024)) == 0)
! 192: printf("%d ", len / (1024*1024));
! 193: pmap_kenter_pa(dumpspace, addr, VM_PROT_READ);
! 194: pmap_update(pmap_kernel());
! 195:
! 196: error = (*bdev->d_dump)(dumpdev,
! 197: blkno, (caddr_t) dumpspace, PAGE_SIZE);
! 198: pmap_kremove(dumpspace, PAGE_SIZE);
! 199: pmap_update(pmap_kernel());
! 200: if (error) break;
! 201: blkno += btodb(PAGE_SIZE);
! 202: len += PAGE_SIZE;
! 203: }
! 204: }
! 205:
! 206: abort:
! 207: switch (error) {
! 208: case ENXIO:
! 209: printf("device bad\n");
! 210: break;
! 211:
! 212: case EFAULT:
! 213: printf("device not ready\n");
! 214: break;
! 215:
! 216: case EINVAL:
! 217: printf("area improper\n");
! 218: break;
! 219:
! 220: case EIO:
! 221: printf("i/o error\n");
! 222: break;
! 223:
! 224: case EINTR:
! 225: printf("aborted from console\n");
! 226: break;
! 227:
! 228: default:
! 229: printf("succeeded\n");
! 230: break;
! 231: }
! 232: printf("\n\n");
! 233: delay(1000000);
! 234: }
! 235:
! 236: /* End of stubs.c */
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