Annotation of sys/arch/arm/arm/stubs.c, Revision 1.1.1.1
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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