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/* $OpenBSD: kvm_arm.c,v 1.12 2021/12/01 21:45:19 deraadt Exp $ */
/*
* Copyright (c) 2006 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice, this permission notice, and the disclaimer below
* appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*-
* Copyright (C) 1996 Wolfgang Solfrank.
* Copyright (C) 1996 TooLs GmbH.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/
/*
* ARM machine dependent routines for kvm.
*/
#include <sys/types.h>
#include <sys/kcore.h>
#include <unistd.h>
#include <stdlib.h>
#include <nlist.h>
#include <kvm.h>
#include <db.h>
#include "kvm_private.h"
#include <arm/kcore.h>
void
_kvm_freevtop(kvm_t *kd)
{
free(kd->vmst);
kd->vmst = NULL;
}
int
_kvm_initvtop(kvm_t *kd)
{
return (0);
}
/*
* Translate a kernel virtual address to a physical address by walking
* the kernels page table.
*/
int
_kvm_kvatop(kvm_t *kd, u_long va, paddr_t *pa)
{
cpu_kcore_hdr_t *cpup = kd->cpu_data;
if (ISALIVE(kd)) {
_kvm_err(kd, 0, "vatop called in live kernel!");
return (0);
}
/*
* This relies upon the kernel text and data being contiguous
* in the first memory segment.
* Other virtual addresses are not reachable yet.
*/
if (va >= cpup->kernelbase + cpup->kerneloffs &&
va < cpup->kernelbase + cpup->kerneloffs + cpup->staticsize) {
*pa = (va - cpup->kernelbase) +
(paddr_t)cpup->ram_segs[0].start;
return (int)(kd->nbpg - (va & (kd->nbpg - 1)));
}
_kvm_err(kd, 0, "kvm_vatop: va %lx unreachable", va);
return (0);
}
off_t
_kvm_pa2off(kvm_t *kd, paddr_t pa)
{
cpu_kcore_hdr_t *cpup = kd->cpu_data;
phys_ram_seg_t *mp = cpup->ram_segs;
off_t off = 0;
int block;
for (block = 0; block < NPHYS_RAM_SEGS; block++, mp++) {
if (pa >= mp->start && pa < mp->start + mp->size)
return (kd->dump_off + off +
(off_t)(pa - (paddr_t)mp->start));
off += (off_t)mp->size;
}
_kvm_err(kd, 0, "not a physical address: %lx", pa);
return (-1);
}
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