1190 lines
25 KiB
C
1190 lines
25 KiB
C
/* $NetBSD: machdep.c,v 1.222 2011/05/16 13:22:52 tsutsui Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1982, 1986, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: machdep.c 1.74 92/12/20$
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*
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* @(#)machdep.c 8.10 (Berkeley) 4/20/94
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.222 2011/05/16 13:22:52 tsutsui Exp $");
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#include "opt_ddb.h"
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#include "opt_compat_netbsd.h"
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#include "opt_modular.h"
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#include "opt_panicbutton.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/callout.h>
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#include <sys/buf.h>
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#include <sys/conf.h>
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#include <sys/exec.h>
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#include <sys/exec_aout.h> /* for MID_* */
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#include <sys/file.h>
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#include <sys/ioctl.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <sys/mbuf.h>
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#include <sys/mount.h>
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#include <sys/msgbuf.h>
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#include <sys/proc.h>
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#include <sys/reboot.h>
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#include <sys/signalvar.h>
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#include <sys/syscallargs.h>
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#include <sys/tty.h>
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#include <sys/core.h>
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#include <sys/kcore.h>
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#include <sys/vnode.h>
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#include <sys/ksyms.h>
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#include <sys/module.h>
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#ifdef DDB
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#include <machine/db_machdep.h>
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#include <ddb/db_sym.h>
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#include <ddb/db_extern.h>
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#endif /* DDB */
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#ifdef __ELF__
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#include <sys/exec_elf.h>
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#endif
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#include <machine/autoconf.h>
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#include <machine/bootinfo.h>
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#include <machine/bus.h>
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#include <machine/cpu.h>
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#include <machine/hp300spu.h>
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#include <machine/reg.h>
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#include <machine/pcb.h>
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#include <machine/psl.h>
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#include <machine/pte.h>
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#include <machine/kcore.h> /* XXX should be pulled in by sys/kcore.h */
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#include <dev/cons.h>
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#define MAXMEM 64*1024 /* XXX - from cmap.h */
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#include <uvm/uvm_extern.h>
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#include <sys/sysctl.h>
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#include "opt_useleds.h"
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#ifdef USELEDS
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#include <hp300/hp300/leds.h>
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#endif
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#include "ksyms.h"
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/* the following is used externally (sysctl_hw) */
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char machine[] = MACHINE; /* from <machine/param.h> */
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/* Our exported CPU info; we can have only one. */
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struct cpu_info cpu_info_store;
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struct vm_map *phys_map = NULL;
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extern paddr_t avail_end;
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/*
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* bootinfo base (physical and virtual). The bootinfo is placed, by
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* the boot loader, into the first page of kernel text, which is zero
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* filled (see locore.s) and not mapped at 0. It is remapped to a
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* different address in pmap_bootstrap().
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*/
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paddr_t bootinfo_pa;
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vaddr_t bootinfo_va;
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int maxmem; /* max memory per process */
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int physmem = MAXMEM; /* max supported memory, changes to actual */
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/*
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* safepri is a safe priority for sleep to set for a spin-wait
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* during autoconfiguration or after a panic.
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*/
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int safepri = PSL_LOWIPL;
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extern u_int lowram;
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extern short exframesize[];
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/* prototypes for local functions */
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static void parityenable(void);
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static int parityerror(struct frame *);
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static int parityerrorfind(void);
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static void identifycpu(void);
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static void initcpu(void);
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static int cpu_dumpsize(void);
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static int cpu_dump(int (*)(dev_t, daddr_t, void *, size_t), daddr_t *);
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static void cpu_init_kcore_hdr(void);
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/* functions called from locore.s */
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void dumpsys(void);
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void hp300_init(void);
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void straytrap(int, u_short);
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void nmihand(struct frame);
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/*
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* Machine-dependent crash dump header info.
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*/
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static cpu_kcore_hdr_t cpu_kcore_hdr;
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/*
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* Note that the value of delay_divisor is roughly
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* 2048 / cpuspeed (where cpuspeed is in MHz) on 68020
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* and 68030 systems. See clock.c for the delay
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* calibration algorithm.
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*/
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int cpuspeed; /* relative CPU speed; XXX skewed on 68040 */
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int delay_divisor; /* delay constant */
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/*
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* Early initialization, before main() is called.
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*/
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void
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hp300_init(void)
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{
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struct btinfo_magic *bt_mag;
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int i;
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extern paddr_t avail_start, avail_end;
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#ifdef CACHE_HAVE_VAC
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/*
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* Determine VA aliasing distance if any
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*/
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switch (machineid) {
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case HP_320:
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pmap_aliasmask = 0x3fff; /* 16KB */
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break;
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case HP_350:
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pmap_aliasmask = 0x7fff; /* 32KB */
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break;
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default:
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break;
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}
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#endif
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/*
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* Tell the VM system about available physical memory. The
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* hp300 only has one segment.
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*/
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uvm_page_physload(atop(avail_start), atop(avail_end),
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atop(avail_start), atop(avail_end), VM_FREELIST_DEFAULT);
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/* Calibrate the delay loop. */
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hp300_calibrate_delay();
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/*
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* Initialize error message buffer (at end of core).
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* avail_end was pre-decremented in pmap_bootstrap to compensate.
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*/
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for (i = 0; i < btoc(MSGBUFSIZE); i++)
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pmap_kenter_pa((vaddr_t)msgbufaddr + i * PAGE_SIZE,
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avail_end + i * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, 0);
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pmap_update(pmap_kernel());
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initmsgbuf(msgbufaddr, m68k_round_page(MSGBUFSIZE));
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/*
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* Map in the bootinfo page, and make sure the bootinfo
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* exists by searching for the MAGIC record. If it's not
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* there, disable bootinfo.
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*/
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bootinfo_va = virtual_avail;
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virtual_avail += PAGE_SIZE;
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pmap_enter(pmap_kernel(), bootinfo_va, bootinfo_pa,
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VM_PROT_READ|VM_PROT_WRITE,
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VM_PROT_READ|VM_PROT_WRITE|PMAP_WIRED);
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pmap_update(pmap_kernel());
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bt_mag = lookup_bootinfo(BTINFO_MAGIC);
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if (bt_mag == NULL ||
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bt_mag->magic1 != BOOTINFO_MAGIC1 ||
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bt_mag->magic2 != BOOTINFO_MAGIC2) {
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pmap_remove(pmap_kernel(), bootinfo_va,
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bootinfo_va + PAGE_SIZE);
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pmap_update(pmap_kernel());
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virtual_avail -= PAGE_SIZE;
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bootinfo_va = 0;
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}
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}
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/*
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* Console initialization: called early on from main,
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* before vm init or startup. Do enough configuration
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* to choose and initialize a console.
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*/
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void
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consinit(void)
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{
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/*
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* Initialize the external I/O extent map.
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*/
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iomap_init();
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/*
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* Initialize the console before we print anything out.
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*/
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hp300_cninit();
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/*
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* Issue a warning if the boot loader didn't provide bootinfo.
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*/
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if (bootinfo_va != 0)
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printf("bootinfo found at 0x%08lx\n", bootinfo_pa);
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else
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printf("WARNING: boot loader did not provide bootinfo\n");
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#if NKSYMS || defined(DDB) || defined(MODULAR)
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{
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extern int end;
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extern int *esym;
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ksyms_addsyms_elf((int)esym - (int)&end - sizeof(Elf32_Ehdr),
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(void *)&end, esym);
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}
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#endif
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#ifdef DDB
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if (boothowto & RB_KDB)
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Debugger();
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#endif
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}
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/*
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* cpu_startup: allocate memory for variable-sized tables,
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* initialize CPU
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*/
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void
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cpu_startup(void)
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{
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vaddr_t minaddr, maxaddr;
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char pbuf[9];
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#ifdef DEBUG
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extern int pmapdebug;
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int opmapdebug = pmapdebug;
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pmapdebug = 0;
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#endif
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if (fputype != FPU_NONE)
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m68k_make_fpu_idle_frame();
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/*
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* Initialize the kernel crash dump header.
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*/
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cpu_init_kcore_hdr();
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/*
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* Good {morning,afternoon,evening,night}.
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*/
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printf("%s%s", copyright, version);
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identifycpu();
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format_bytes(pbuf, sizeof(pbuf), ctob(physmem));
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printf("total memory = %s\n", pbuf);
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minaddr = 0;
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/*
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* Allocate a submap for physio
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*/
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phys_map = uvm_km_suballoc(kernel_map, &minaddr, &maxaddr,
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VM_PHYS_SIZE, 0, false, NULL);
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#ifdef DEBUG
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pmapdebug = opmapdebug;
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#endif
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format_bytes(pbuf, sizeof(pbuf), ptoa(uvmexp.free));
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printf("avail memory = %s\n", pbuf);
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/*
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* Set up CPU-specific registers, cache, etc.
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*/
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initcpu();
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/* Safe to use malloc for extio_ex now. */
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extio_ex_malloc_safe = 1;
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}
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/*
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* Info for CTL_HW
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*/
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char cpu_model[120];
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struct hp300_model {
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int id;
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int mmuid;
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const char *name;
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const char *speed;
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};
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static const struct hp300_model hp300_models[] = {
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{ HP_320, -1, "320", "16.67" },
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{ HP_330, -1, "318/319/330", "16.67" },
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{ HP_340, -1, "340", "16.67" },
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{ HP_345, -1, "345", "50" },
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{ HP_350, -1, "350", "25" },
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{ HP_360, -1, "360", "25" },
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{ HP_362, -1, "362", "25" },
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{ HP_370, -1, "370", "33.33" },
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{ HP_375, -1, "375", "50" },
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{ HP_380, -1, "380", "25" },
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{ HP_382, -1, "382", "25" },
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{ HP_385, -1, "385", "33" },
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{ HP_400, -1, "400", "50" },
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{ HP_425, MMUID_425_T, "425t", "25" },
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{ HP_425, MMUID_425_S, "425s", "25" },
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{ HP_425, MMUID_425_E, "425e", "25" },
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{ HP_425, -1, "425", "25" },
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{ HP_433, MMUID_433_T, "433t", "33" },
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{ HP_433, MMUID_433_S, "433s", "33" },
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{ HP_433, -1, "433", "33" },
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{ 0, -1, NULL, NULL },
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};
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static void
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identifycpu(void)
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{
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const char *t, *mc, *s;
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int i, len;
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/*
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* Find the model number.
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*/
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for (t = s = NULL, i = 0; hp300_models[i].name != NULL; i++) {
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if (hp300_models[i].id == machineid) {
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if (hp300_models[i].mmuid != -1 &&
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hp300_models[i].mmuid != mmuid)
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continue;
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t = hp300_models[i].name;
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s = hp300_models[i].speed;
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break;
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}
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}
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if (t == NULL) {
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printf("\nunknown machineid %d\n", machineid);
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goto lose;
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}
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/*
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* ...and the CPU type.
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*/
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switch (cputype) {
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case CPU_68040:
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mc = "40";
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break;
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case CPU_68030:
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mc = "30";
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break;
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case CPU_68020:
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mc = "20";
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break;
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default:
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printf("\nunknown cputype %d\n", cputype);
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goto lose;
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}
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sprintf(cpu_model, "HP 9000/%s (%sMHz MC680%s CPU", t, s, mc);
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/*
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* ...and the MMU type.
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*/
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switch (mmutype) {
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case MMU_68040:
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case MMU_68030:
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strcat(cpu_model, "+MMU");
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break;
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case MMU_68851:
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strcat(cpu_model, ", MC68851 MMU");
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break;
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case MMU_HP:
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strcat(cpu_model, ", HP MMU");
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break;
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default:
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printf("%s\nunknown MMU type %d\n", cpu_model, mmutype);
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panic("startup");
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}
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len = strlen(cpu_model);
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/*
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* ...and the FPU type.
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*/
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switch (fputype) {
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case FPU_68040:
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len += sprintf(cpu_model + len, "+FPU");
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break;
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case FPU_68882:
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len += sprintf(cpu_model + len, ", %sMHz MC68882 FPU", s);
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break;
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case FPU_68881:
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len += sprintf(cpu_model + len, ", %sMHz MC68881 FPU",
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machineid == HP_350 ? "20" : "16.67");
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break;
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default:
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len += sprintf(cpu_model + len, ", unknown FPU");
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}
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/*
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* ...and finally, the cache type.
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*/
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if (cputype == CPU_68040)
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sprintf(cpu_model + len, ", 4k on-chip physical I/D caches");
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else {
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switch (ectype) {
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case EC_VIRT:
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sprintf(cpu_model + len,
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", %dK virtual-address cache",
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machineid == HP_320 ? 16 : 32);
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break;
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case EC_PHYS:
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sprintf(cpu_model + len,
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", %dK physical-address cache",
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machineid == HP_370 ? 64 : 32);
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break;
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}
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}
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strcat(cpu_model, ")");
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printf("%s\n", cpu_model);
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#ifdef DIAGNOSTIC
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printf("cpu: delay divisor %d", delay_divisor);
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if (mmuid)
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printf(", mmuid %d", mmuid);
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printf("\n");
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#endif
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/*
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* Now that we have told the user what they have,
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* let them know if that machine type isn't configured.
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*/
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switch (machineid) {
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case -1: /* keep compilers happy */
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#if !defined(HP320)
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case HP_320:
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#endif
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#if !defined(HP330)
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case HP_330:
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#endif
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#if !defined(HP340)
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case HP_340:
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#endif
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#if !defined(HP345)
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case HP_345:
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#endif
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#if !defined(HP350)
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case HP_350:
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#endif
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#if !defined(HP360)
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case HP_360:
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#endif
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#if !defined(HP362)
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case HP_362:
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#endif
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#if !defined(HP370)
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case HP_370:
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#endif
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#if !defined(HP375)
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case HP_375:
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#endif
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#if !defined(HP380)
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case HP_380:
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#endif
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#if !defined(HP382)
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case HP_382:
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#endif
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#if !defined(HP385)
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case HP_385:
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#endif
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#if !defined(HP400)
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case HP_400:
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#endif
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#if !defined(HP425)
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case HP_425:
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#endif
|
|
#if !defined(HP433)
|
|
case HP_433:
|
|
#endif
|
|
panic("SPU type not configured");
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return;
|
|
lose:
|
|
panic("startup");
|
|
}
|
|
|
|
/*
|
|
* machine dependent system variables.
|
|
*/
|
|
SYSCTL_SETUP(sysctl_machdep_setup, "sysctl machdep subtree setup")
|
|
{
|
|
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT,
|
|
CTLTYPE_NODE, "machdep", NULL,
|
|
NULL, 0, NULL, 0,
|
|
CTL_MACHDEP, CTL_EOL);
|
|
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT,
|
|
CTLTYPE_STRUCT, "console_device", NULL,
|
|
sysctl_consdev, 0, NULL, sizeof(dev_t),
|
|
CTL_MACHDEP, CPU_CONSDEV, CTL_EOL);
|
|
}
|
|
|
|
int waittime = -1;
|
|
|
|
void
|
|
cpu_reboot(int howto, char *bootstr)
|
|
{
|
|
struct pcb *pcb = lwp_getpcb(curlwp);
|
|
|
|
/* take a snap shot before clobbering any registers */
|
|
if (pcb != NULL)
|
|
savectx(pcb);
|
|
|
|
/* If system is cold, just halt. */
|
|
if (cold) {
|
|
howto |= RB_HALT;
|
|
goto haltsys;
|
|
}
|
|
|
|
boothowto = howto;
|
|
if ((howto & RB_NOSYNC) == 0 && waittime < 0) {
|
|
waittime = 0;
|
|
vfs_shutdown();
|
|
/*
|
|
* If we've been adjusting the clock, the todr
|
|
* will be out of synch; adjust it now.
|
|
*/
|
|
resettodr();
|
|
}
|
|
|
|
/* Disable interrupts. */
|
|
splhigh();
|
|
|
|
/* If rebooting and a dump is requested do it. */
|
|
if (howto & RB_DUMP)
|
|
dumpsys();
|
|
|
|
haltsys:
|
|
/* Run any shutdown hooks. */
|
|
doshutdownhooks();
|
|
|
|
pmf_system_shutdown(boothowto);
|
|
|
|
#if defined(PANICWAIT) && !defined(DDB)
|
|
if ((howto & RB_HALT) == 0 && panicstr) {
|
|
printf("hit any key to reboot...\n");
|
|
(void)cngetc();
|
|
printf("\n");
|
|
}
|
|
#endif
|
|
|
|
/* Finally, halt/reboot the system. */
|
|
if (howto & RB_HALT) {
|
|
printf("System halted. Hit any key to reboot.\n\n");
|
|
(void)cngetc();
|
|
}
|
|
|
|
printf("rebooting...\n");
|
|
DELAY(1000000);
|
|
doboot();
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
/*
|
|
* Initialize the kernel crash dump header.
|
|
*/
|
|
static void
|
|
cpu_init_kcore_hdr(void)
|
|
{
|
|
cpu_kcore_hdr_t *h = &cpu_kcore_hdr;
|
|
struct m68k_kcore_hdr *m = &h->un._m68k;
|
|
extern int end;
|
|
|
|
memset(&cpu_kcore_hdr, 0, sizeof(cpu_kcore_hdr));
|
|
|
|
/*
|
|
* Initialize the `dispatcher' portion of the header.
|
|
*/
|
|
strcpy(h->name, machine);
|
|
h->page_size = PAGE_SIZE;
|
|
h->kernbase = KERNBASE;
|
|
|
|
/*
|
|
* Fill in information about our MMU configuration.
|
|
*/
|
|
m->mmutype = mmutype;
|
|
m->sg_v = SG_V;
|
|
m->sg_frame = SG_FRAME;
|
|
m->sg_ishift = SG_ISHIFT;
|
|
m->sg_pmask = SG_PMASK;
|
|
m->sg40_shift1 = SG4_SHIFT1;
|
|
m->sg40_mask2 = SG4_MASK2;
|
|
m->sg40_shift2 = SG4_SHIFT2;
|
|
m->sg40_mask3 = SG4_MASK3;
|
|
m->sg40_shift3 = SG4_SHIFT3;
|
|
m->sg40_addr1 = SG4_ADDR1;
|
|
m->sg40_addr2 = SG4_ADDR2;
|
|
m->pg_v = PG_V;
|
|
m->pg_frame = PG_FRAME;
|
|
|
|
/*
|
|
* Initialize pointer to kernel segment table.
|
|
*/
|
|
m->sysseg_pa = (uint32_t)(pmap_kernel()->pm_stpa);
|
|
|
|
/*
|
|
* Initialize relocation value such that:
|
|
*
|
|
* pa = (va - KERNBASE) + reloc
|
|
*/
|
|
m->reloc = lowram;
|
|
|
|
/*
|
|
* Define the end of the relocatable range.
|
|
*/
|
|
m->relocend = (uint32_t)&end;
|
|
|
|
/*
|
|
* hp300 has one contiguous memory segment.
|
|
*/
|
|
m->ram_segs[0].start = lowram;
|
|
m->ram_segs[0].size = ctob(physmem);
|
|
}
|
|
|
|
/*
|
|
* Compute the size of the machine-dependent crash dump header.
|
|
* Returns size in disk blocks.
|
|
*/
|
|
|
|
#define CHDRSIZE (ALIGN(sizeof(kcore_seg_t)) + ALIGN(sizeof(cpu_kcore_hdr_t)))
|
|
#define MDHDRSIZE roundup(CHDRSIZE, dbtob(1))
|
|
|
|
static int
|
|
cpu_dumpsize(void)
|
|
{
|
|
|
|
return btodb(MDHDRSIZE);
|
|
}
|
|
|
|
/*
|
|
* Called by dumpsys() to dump the machine-dependent header.
|
|
*/
|
|
static int
|
|
cpu_dump(int (*dump)(dev_t, daddr_t, void *, size_t), daddr_t *blknop)
|
|
{
|
|
int buf[MDHDRSIZE / sizeof(int)];
|
|
cpu_kcore_hdr_t *chdr;
|
|
kcore_seg_t *kseg;
|
|
int error;
|
|
|
|
kseg = (kcore_seg_t *)buf;
|
|
chdr = (cpu_kcore_hdr_t *)&buf[ALIGN(sizeof(kcore_seg_t)) /
|
|
sizeof(int)];
|
|
|
|
/* Create the segment header. */
|
|
CORE_SETMAGIC(*kseg, KCORE_MAGIC, MID_MACHINE, CORE_CPU);
|
|
kseg->c_size = MDHDRSIZE - ALIGN(sizeof(kcore_seg_t));
|
|
|
|
memcpy(chdr, &cpu_kcore_hdr, sizeof(cpu_kcore_hdr_t));
|
|
error = (*dump)(dumpdev, *blknop, (void *)buf, sizeof(buf));
|
|
*blknop += btodb(sizeof(buf));
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* These variables are needed by /sbin/savecore
|
|
*/
|
|
uint32_t dumpmag = 0x8fca0101; /* magic number */
|
|
int dumpsize = 0; /* pages */
|
|
long dumplo = 0; /* blocks */
|
|
|
|
/*
|
|
* This is called by main to set dumplo and dumpsize.
|
|
* Dumps always skip the first PAGE_SIZE of disk space
|
|
* in case there might be a disk label stored there.
|
|
* If there is extra space, put dump at the end to
|
|
* reduce the chance that swapping trashes it.
|
|
*/
|
|
void
|
|
cpu_dumpconf(void)
|
|
{
|
|
const struct bdevsw *bdev;
|
|
int chdrsize; /* size of dump header */
|
|
int nblks; /* size of dump area */
|
|
|
|
if (dumpdev == NODEV)
|
|
return;
|
|
bdev = bdevsw_lookup(dumpdev);
|
|
if (bdev == NULL) {
|
|
dumpdev = NODEV;
|
|
return;
|
|
}
|
|
if (bdev->d_psize == NULL)
|
|
return;
|
|
nblks = (*bdev->d_psize)(dumpdev);
|
|
chdrsize = cpu_dumpsize();
|
|
|
|
dumpsize = btoc(cpu_kcore_hdr.un._m68k.ram_segs[0].size);
|
|
|
|
/*
|
|
* Check do see if we will fit. Note we always skip the
|
|
* first PAGE_SIZE in case there is a disk label there.
|
|
*/
|
|
if (nblks < (ctod(dumpsize) + chdrsize + ctod(1))) {
|
|
dumpsize = 0;
|
|
dumplo = -1;
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Put dump at the end of the partition.
|
|
*/
|
|
dumplo = (nblks - 1) - ctod(dumpsize) - chdrsize;
|
|
}
|
|
|
|
/*
|
|
* Dump physical memory onto the dump device. Called by cpu_reboot().
|
|
*/
|
|
void
|
|
dumpsys(void)
|
|
{
|
|
const struct bdevsw *bdev;
|
|
daddr_t blkno; /* current block to write */
|
|
/* dump routine */
|
|
int (*dump)(dev_t, daddr_t, void *, size_t);
|
|
int pg; /* page being dumped */
|
|
paddr_t maddr; /* PA being dumped */
|
|
int error; /* error code from (*dump)() */
|
|
|
|
/* XXX initialized here because of gcc lossage */
|
|
maddr = lowram;
|
|
pg = 0;
|
|
|
|
/* Make sure dump device is valid. */
|
|
if (dumpdev == NODEV)
|
|
return;
|
|
bdev = bdevsw_lookup(dumpdev);
|
|
if (bdev == NULL)
|
|
return;
|
|
if (dumpsize == 0) {
|
|
cpu_dumpconf();
|
|
if (dumpsize == 0)
|
|
return;
|
|
}
|
|
if (dumplo <= 0) {
|
|
printf("\ndump to dev %u,%u not possible\n",
|
|
major(dumpdev), minor(dumpdev));
|
|
return;
|
|
}
|
|
dump = bdev->d_dump;
|
|
blkno = dumplo;
|
|
|
|
printf("\ndumping to dev %u,%u offset %ld\n",
|
|
major(dumpdev), minor(dumpdev), dumplo);
|
|
|
|
printf("dump ");
|
|
|
|
/* Write the dump header. */
|
|
error = cpu_dump(dump, &blkno);
|
|
if (error)
|
|
goto bad;
|
|
|
|
for (pg = 0; pg < dumpsize; pg++) {
|
|
#define NPGMB (1024*1024/PAGE_SIZE)
|
|
/* print out how many MBs we have dumped */
|
|
if (pg && (pg % NPGMB) == 0)
|
|
printf("%d ", pg / NPGMB);
|
|
#undef NPGMB
|
|
pmap_enter(pmap_kernel(), (vaddr_t)vmmap, maddr,
|
|
VM_PROT_READ, VM_PROT_READ|PMAP_WIRED);
|
|
|
|
pmap_update(pmap_kernel());
|
|
error = (*dump)(dumpdev, blkno, vmmap, PAGE_SIZE);
|
|
bad:
|
|
switch (error) {
|
|
case 0:
|
|
maddr += PAGE_SIZE;
|
|
blkno += btodb(PAGE_SIZE);
|
|
break;
|
|
|
|
case ENXIO:
|
|
printf("device bad\n");
|
|
return;
|
|
|
|
case EFAULT:
|
|
printf("device not ready\n");
|
|
return;
|
|
|
|
case EINVAL:
|
|
printf("area improper\n");
|
|
return;
|
|
|
|
case EIO:
|
|
printf("i/o error\n");
|
|
return;
|
|
|
|
case EINTR:
|
|
printf("aborted from console\n");
|
|
return;
|
|
|
|
default:
|
|
printf("error %d\n", error);
|
|
return;
|
|
}
|
|
}
|
|
printf("succeeded\n");
|
|
}
|
|
|
|
static void
|
|
initcpu(void)
|
|
{
|
|
|
|
#ifdef MAPPEDCOPY
|
|
/*
|
|
* Initialize lower bound for doing copyin/copyout using
|
|
* page mapping (if not already set). We don't do this on
|
|
* VAC machines as it loses big time.
|
|
*/
|
|
if (ectype == EC_VIRT)
|
|
mappedcopysize = -1; /* in case it was patched */
|
|
else
|
|
mappedcopysize = PAGE_SIZE;
|
|
#endif
|
|
parityenable();
|
|
#ifdef USELEDS
|
|
ledinit();
|
|
#endif
|
|
}
|
|
|
|
void
|
|
straytrap(int pc, u_short evec)
|
|
{
|
|
printf("unexpected trap (vector offset %x) from %x\n",
|
|
evec & 0xFFF, pc);
|
|
}
|
|
|
|
/* XXX should change the interface, and make one badaddr() function */
|
|
|
|
int *nofault;
|
|
|
|
int
|
|
badaddr(void *addr)
|
|
{
|
|
int i;
|
|
label_t faultbuf;
|
|
|
|
nofault = (int *)&faultbuf;
|
|
if (setjmp((label_t *)nofault)) {
|
|
nofault = (int *)0;
|
|
return 1;
|
|
}
|
|
i = *(volatile short *)addr;
|
|
nofault = (int *)0;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
badbaddr(void *addr)
|
|
{
|
|
int i;
|
|
label_t faultbuf;
|
|
|
|
nofault = (int *)&faultbuf;
|
|
if (setjmp((label_t *)nofault)) {
|
|
nofault = (int *)0;
|
|
return 1;
|
|
}
|
|
i = *(volatile char *)addr;
|
|
nofault = (int *) 0;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* lookup_bootinfo:
|
|
*
|
|
* Look up information in bootinfo from boot loader.
|
|
*/
|
|
void *
|
|
lookup_bootinfo(int type)
|
|
{
|
|
struct btinfo_common *bt;
|
|
char *help = (char *)bootinfo_va;
|
|
|
|
/* Check for a bootinfo record first. */
|
|
if (help == NULL)
|
|
return NULL;
|
|
|
|
do {
|
|
bt = (struct btinfo_common *)help;
|
|
if (bt->type == type)
|
|
return help;
|
|
help += bt->next;
|
|
} while (bt->next != 0 &&
|
|
(size_t)help < (size_t)bootinfo_va + BOOTINFO_SIZE);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
#if defined(PANICBUTTON) && !defined(DDB)
|
|
/*
|
|
* Declare these so they can be patched.
|
|
*/
|
|
int panicbutton = 1; /* non-zero if panic buttons are enabled */
|
|
int candbdiv = 2; /* give em half a second (hz / candbdiv) */
|
|
|
|
static void candbtimer(void *);
|
|
|
|
int crashandburn;
|
|
|
|
callout_t candbtimer_ch;
|
|
|
|
void
|
|
candbtimer(void *arg)
|
|
{
|
|
|
|
crashandburn = 0;
|
|
}
|
|
#endif /* PANICBUTTON & !DDB */
|
|
|
|
static int innmihand; /* simple mutex */
|
|
|
|
/*
|
|
* Level 7 interrupts can be caused by HIL keyboards (in cooked mode only,
|
|
* but we run them in raw mode) or parity errors.
|
|
*/
|
|
void
|
|
nmihand(struct frame frame)
|
|
{
|
|
|
|
/* Prevent unwanted recursion. */
|
|
if (innmihand)
|
|
return;
|
|
innmihand = 1;
|
|
|
|
if (parityerror(&frame))
|
|
return;
|
|
/* panic?? */
|
|
printf("unexpected level 7 interrupt ignored\n");
|
|
|
|
innmihand = 0;
|
|
}
|
|
|
|
/*
|
|
* Parity error section. Contains magic.
|
|
*/
|
|
#define PARREG ((volatile short *)IIOV(0x5B0000))
|
|
static int gotparmem = 0;
|
|
#ifdef DEBUG
|
|
int ignorekperr = 0; /* ignore kernel parity errors */
|
|
#endif
|
|
|
|
/*
|
|
* Enable parity detection
|
|
*/
|
|
static void
|
|
parityenable(void)
|
|
{
|
|
label_t faultbuf;
|
|
|
|
nofault = (int *)&faultbuf;
|
|
if (setjmp((label_t *)nofault)) {
|
|
nofault = (int *)0;
|
|
printf("Parity detection disabled\n");
|
|
return;
|
|
}
|
|
*PARREG = 1;
|
|
nofault = (int *)0;
|
|
gotparmem = 1;
|
|
}
|
|
|
|
/*
|
|
* Determine if level 7 interrupt was caused by a parity error
|
|
* and deal with it if it was. Returns 1 if it was a parity error.
|
|
*/
|
|
static int
|
|
parityerror(struct frame *fp)
|
|
{
|
|
if (!gotparmem)
|
|
return 0;
|
|
*PARREG = 0;
|
|
DELAY(10);
|
|
*PARREG = 1;
|
|
if (panicstr) {
|
|
printf("parity error after panic ignored\n");
|
|
return 1;
|
|
}
|
|
if (!parityerrorfind())
|
|
printf("WARNING: transient parity error ignored\n");
|
|
else if (USERMODE(fp->f_sr)) {
|
|
printf("pid %d: parity error\n", curproc->p_pid);
|
|
uprintf("sorry, pid %d killed due to memory parity error\n",
|
|
curproc->p_pid);
|
|
psignal(curproc, SIGKILL);
|
|
#ifdef DEBUG
|
|
} else if (ignorekperr) {
|
|
printf("WARNING: kernel parity error ignored\n");
|
|
#endif
|
|
} else {
|
|
regdump((struct trapframe *)fp, 128);
|
|
panic("kernel parity error");
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Yuk! There has got to be a better way to do this!
|
|
* Searching all of memory with interrupts blocked can lead to disaster.
|
|
*/
|
|
static int
|
|
parityerrorfind(void)
|
|
{
|
|
static label_t parcatch;
|
|
static int looking = 0;
|
|
volatile int pg, o, s;
|
|
volatile int *ip;
|
|
int i;
|
|
int found;
|
|
|
|
#ifdef lint
|
|
i = o = pg = 0;
|
|
if (i)
|
|
return 0;
|
|
#endif
|
|
/*
|
|
* If looking is true we are searching for a known parity error
|
|
* and it has just occurred. All we do is return to the higher
|
|
* level invocation.
|
|
*/
|
|
if (looking)
|
|
longjmp(&parcatch);
|
|
s = splhigh();
|
|
/*
|
|
* If setjmp returns true, the parity error we were searching
|
|
* for has just occurred (longjmp above) at the current pg+o
|
|
*/
|
|
if (setjmp(&parcatch)) {
|
|
printf("Parity error at 0x%x\n", ctob(pg)|o);
|
|
found = 1;
|
|
goto done;
|
|
}
|
|
/*
|
|
* If we get here, a parity error has occurred for the first time
|
|
* and we need to find it. We turn off any external caches and
|
|
* loop thru memory, testing every longword til a fault occurs and
|
|
* we regain control at setjmp above. Note that because of the
|
|
* setjmp, pg and o need to be volatile or their values will be lost.
|
|
*/
|
|
looking = 1;
|
|
ecacheoff();
|
|
for (pg = btoc(lowram); pg < btoc(lowram)+physmem; pg++) {
|
|
pmap_enter(pmap_kernel(), (vaddr_t)vmmap, ctob(pg),
|
|
VM_PROT_READ, VM_PROT_READ|PMAP_WIRED);
|
|
pmap_update(pmap_kernel());
|
|
ip = (int *)vmmap;
|
|
for (o = 0; o < PAGE_SIZE; o += sizeof(int))
|
|
i = *ip++;
|
|
}
|
|
/*
|
|
* Getting here implies no fault was found. Should never happen.
|
|
*/
|
|
printf("Couldn't locate parity error\n");
|
|
found = 0;
|
|
done:
|
|
looking = 0;
|
|
pmap_remove(pmap_kernel(), (vaddr_t)vmmap, (vaddr_t)&vmmap[PAGE_SIZE]);
|
|
pmap_update(pmap_kernel());
|
|
ecacheon();
|
|
splx(s);
|
|
return found;
|
|
}
|
|
|
|
/*
|
|
* cpu_exec_aout_makecmds():
|
|
* CPU-dependent a.out format hook for execve().
|
|
*
|
|
* Determine of the given exec package refers to something which we
|
|
* understand and, if so, set up the vmcmds for it.
|
|
*
|
|
* XXX what are the special cases for the hp300?
|
|
* XXX why is this COMPAT_NOMID? was something generating
|
|
* hp300 binaries with an a_mid of 0? i thought that was only
|
|
* done on little-endian machines... -- cgd
|
|
*/
|
|
int
|
|
cpu_exec_aout_makecmds(struct lwp *l, struct exec_package *epp)
|
|
{
|
|
#if defined(COMPAT_NOMID) || defined(COMPAT_44)
|
|
u_long midmag, magic;
|
|
u_short mid;
|
|
int error;
|
|
struct exec *execp = epp->ep_hdr;
|
|
|
|
midmag = ntohl(execp->a_midmag);
|
|
mid = (midmag >> 16) & 0xffff;
|
|
magic = midmag & 0xffff;
|
|
|
|
midmag = mid << 16 | magic;
|
|
|
|
switch (midmag) {
|
|
#ifdef COMPAT_NOMID
|
|
case (MID_ZERO << 16) | ZMAGIC:
|
|
error = exec_aout_prep_oldzmagic(l, epp);
|
|
return error;
|
|
#endif
|
|
#ifdef COMPAT_44
|
|
case (MID_HP300 << 16) | ZMAGIC:
|
|
error = exec_aout_prep_oldzmagic(l, epp);
|
|
return error;
|
|
#endif
|
|
}
|
|
#endif /* !(defined(COMPAT_NOMID) || defined(COMPAT_44)) */
|
|
|
|
return ENOEXEC;
|
|
}
|
|
|
|
#ifdef MODULAR
|
|
/*
|
|
* Push any modules loaded by the bootloader etc.
|
|
*/
|
|
void
|
|
module_init_md(void)
|
|
{
|
|
}
|
|
#endif
|