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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2002 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_watchdog.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/sysctl.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/kerneldump.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/dump.h>
#include <machine/elf.h>
#include <machine/md_var.h>
#include <machine/pcb.h>
#include <machine/armreg.h>
#include <machine/vmparam.h> /* For KERNVIRTADDR */
int do_minidump = 1;
SYSCTL_INT(_debug, OID_AUTO, minidump, CTLFLAG_RWTUN, &do_minidump, 0,
"Enable mini crash dumps");
void
dumpsys_wbinv_all(void)
{
/*
* Make sure we write coherent data. Note that in the SMP case this
* only operates on the L1 cache of the current CPU, but all other CPUs
* have already been stopped, and their flush/invalidate was done as
* part of stopping.
*/
dcache_wbinv_poc_all();
#ifdef __XSCALE__
xscale_cache_clean_minidata();
#endif
}
void
dumpsys_map_chunk(vm_paddr_t pa, size_t chunk, void **va)
{
vm_paddr_t a;
int i;
for (i = 0; i < chunk; i++) {
a = pa + i * PAGE_SIZE;
*va = pmap_kenter_temporary(trunc_page(a), i);
}
}
/*
* Add a header to be used by libkvm to get the va to pa delta
*/
int
dumpsys_write_aux_headers(struct dumperinfo *di)
{
Elf_Phdr phdr;
int error;
bzero(&phdr, sizeof(phdr));
phdr.p_type = PT_DUMP_DELTA;
phdr.p_flags = PF_R; /* XXX */
phdr.p_offset = 0;
phdr.p_vaddr = KERNVIRTADDR;
phdr.p_paddr = pmap_kextract(KERNVIRTADDR);
phdr.p_filesz = 0;
phdr.p_memsz = 0;
phdr.p_align = PAGE_SIZE;
error = dumpsys_buf_write(di, (char*)&phdr, sizeof(phdr));
return (error);
}
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