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/* $OpenBSD: autoconf.c,v 1.9 2003/08/15 23:16:30 deraadt Exp $ */
/* $NetBSD: autoconf.c,v 1.19 2002/06/01 15:33:22 ragge Exp $ */
/*
* Copyright (c) 1994, 1998 Ludd, University of Lule}, Sweden.
* 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 at Ludd, University of Lule}.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* 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.
*/
/* All bugs are subject to removal without further notice */
#include <sys/param.h>
#include <lib/libsa/stand.h>
#include "../../include/mtpr.h"
#include "../../include/sid.h"
#include "../../include/intr.h"
#include "../../include/rpb.h"
#include "../../include/scb.h"
#include "vaxstand.h"
void autoconf(void);
void findcpu(void);
void consinit(void);
void scbinit(void);
int getsecs(void);
void scb_stray(void *);
void longjmp(int *, int);
void rtimer(void *);
long *bootregs;
/*
* Do some initial setup. Also create a fake RPB for net-booted machines
* that don't have an in-prom VMB.
*/
void
autoconf(void)
{
int copyrpb = 1;
int fromnet = (bootregs[12] != -1);
findcpu(); /* Configures CPU variables */
consinit(); /* Allow us to print out things */
scbinit(); /* Fix interval clock etc */
#ifdef DEV_DEBUG
printf("Register contents:\n");
for (copyrpb = 0; copyrpb < 13; copyrpb++)
printf("r%d: %lx\n", copyrpb, bootregs[copyrpb]);
#endif
switch (vax_boardtype) {
case VAX_BTYP_780:
case VAX_BTYP_790:
case VAX_BTYP_8000:
case VAX_BTYP_9CC:
case VAX_BTYP_9RR:
case VAX_BTYP_1202:
if (fromnet == 0)
break;
copyrpb = 0;
bootrpb.devtyp = bootregs[0];
bootrpb.adpphy = bootregs[1];
bootrpb.csrphy = bootregs[2];
bootrpb.unit = bootregs[3];
bootrpb.rpb_bootr5 = bootregs[5];
bootrpb.pfncnt = 0;
break;
case VAX_BTYP_46:
case VAX_BTYP_48:
{int *map, i;
/* Map all 16MB of I/O space to low 16MB of memory */
map = (int *)0x700000; /* XXX */
*(int *)0x20080008 = (int)map; /* XXX */
for (i = 0; i < 0x8000; i++)
map[i] = 0x80000000 | i;
}break;
break;
}
if (copyrpb) {
struct rpb *prpb = (struct rpb *)bootregs[11];
bcopy((caddr_t)prpb, &bootrpb, sizeof(struct rpb));
if (prpb->iovec) {
bootrpb.iovec = (int)alloc(prpb->iovecsz);
bcopy((caddr_t)prpb->iovec, (caddr_t)bootrpb.iovec,
prpb->iovecsz);
}
}
}
/*
* Clock handling routines, needed to do timing in standalone programs.
*/
volatile int tickcnt;
int
getsecs(void)
{
return tickcnt/100;
}
struct ivec_dsp **scb;
struct ivec_dsp *scb_vec;
extern struct ivec_dsp idsptch;
extern int jbuf[10];
static void
mcheck(void *arg)
{
int off, *mfp = (int *)&arg;
off = (mfp[7]/4 + 8);
printf("Machine check, pc=%x, psl=%x\n", mfp[off], mfp[off+1]);
longjmp(jbuf, 1);
}
/*
* Init the SCB and set up a handler for all vectors in the lower space,
* to detect unwanted interrupts.
*/
void
scbinit(void)
{
int i;
/*
* Allocate space. We need one page for the SCB, and 128*20 == 2.5k
* for the vectors. The SCB must be on a page boundary.
*/
i = (int)alloc(VAX_NBPG + 128*sizeof(scb_vec[0])) + VAX_PGOFSET;
i &= ~VAX_PGOFSET;
mtpr(i, PR_SCBB);
scb = (void *)i;
scb_vec = (struct ivec_dsp *)(i + VAX_NBPG);
for (i = 0; i < 128; i++) {
scb[i] = &scb_vec[i];
(int)scb[i] |= SCB_ISTACK; /* Only interrupt stack */
scb_vec[i] = idsptch;
scb_vec[i].hoppaddr = scb_stray;
scb_vec[i].pushlarg = (void *) (i * 4);
scb_vec[i].ev = NULL;
}
scb_vec[0xc0/4].hoppaddr = rtimer;
scb_vec[4/4].hoppaddr = mcheck;
if (vax_boardtype != VAX_BTYP_VXT)
mtpr(-10000, PR_NICR); /* Load in count register */
mtpr(0x800000d1, PR_ICCS); /* Start clock and enable interrupt */
mtpr(20, PR_IPL);
}
extern int sluttid, senast, skip;
void
rtimer(void *arg)
{
mtpr(31, PR_IPL);
tickcnt++;
mtpr(0xc1, PR_ICCS);
if (skip)
return;
if ((vax_boardtype == VAX_BTYP_46) ||
(vax_boardtype == VAX_BTYP_48) ||
(vax_boardtype == VAX_BTYP_49)) {
int nu = sluttid - getsecs();
if (senast != nu) {
mtpr(20, PR_IPL);
longjmp(jbuf, 1);
}
}
}
#ifdef __ELF__
#define IDSPTCH "idsptch"
#define EIDSPTCH "eidsptch"
#define CMN_IDSPTCH "cmn_idsptch"
#else
#define IDSPTCH "_idsptch"
#define EIDSPTCH "_eidsptch"
#define CMN_IDSPTCH "_cmn_idsptch"
#endif
asm("
.text
.align 2
.globl " IDSPTCH ", " EIDSPTCH "
" IDSPTCH ":
pushr $0x3f
.word 0x9f16
.long " CMN_IDSPTCH "
.long 0
.long 0
.long 0
" EIDSPTCH ":
" CMN_IDSPTCH ":
movl (sp)+,r0
pushl 4(r0)
calls $1,*(r0)
popr $0x3f
rei
");
/*
* Stray interrupt handler.
* This function must _not_ save any registers (in the reg save mask).
*/
void
scb_stray(void *arg)
{
static int vector, ipl;
ipl = mfpr(PR_IPL);
vector = (int) arg;
printf("stray interrupt: vector 0x%x, ipl %d\n", vector, ipl);
}
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