2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2002 Marcel Moolenaar
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include "opt_watchdog.h"
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/sysctl.h>
38 #include <sys/kernel.h>
40 #include <sys/kerneldump.h>
44 #include <machine/dump.h>
45 #include <machine/elf.h>
46 #include <machine/md_var.h>
47 #include <machine/pcb.h>
48 #include <machine/armreg.h>
49 #include <machine/vmparam.h> /* For KERNVIRTADDR */
52 SYSCTL_INT(_debug, OID_AUTO, minidump, CTLFLAG_RWTUN, &do_minidump, 0,
53 "Enable mini crash dumps");
56 dumpsys_wbinv_all(void)
60 * Make sure we write coherent data. Note that in the SMP case this
61 * only operates on the L1 cache of the current CPU, but all other CPUs
62 * have already been stopped, and their flush/invalidate was done as
65 dcache_wbinv_poc_all();
67 xscale_cache_clean_minidata();
72 dumpsys_map_chunk(vm_paddr_t pa, size_t chunk, void **va)
77 for (i = 0; i < chunk; i++) {
78 a = pa + i * PAGE_SIZE;
79 *va = pmap_kenter_temporary(trunc_page(a), i);
84 * Add a header to be used by libkvm to get the va to pa delta
87 dumpsys_write_aux_headers(struct dumperinfo *di)
92 bzero(&phdr, sizeof(phdr));
93 phdr.p_type = PT_DUMP_DELTA;
94 phdr.p_flags = PF_R; /* XXX */
96 phdr.p_vaddr = KERNVIRTADDR;
97 phdr.p_paddr = pmap_kextract(KERNVIRTADDR);
100 phdr.p_align = PAGE_SIZE;
102 error = dumpsys_buf_write(di, (char*)&phdr, sizeof(phdr));