File: [local] / sys / arch / vax / vax / ka48.c (download)
Revision 1.1, Tue Mar 4 16:08:46 2008 UTC (16 years, 3 months ago) by nbrk
Branch point for: MAIN
Initial revision
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/* $OpenBSD: ka48.c,v 1.8 2002/07/21 19:28:51 hugh Exp $ */
/*
* Copyright (c) 1998 Ludd, University of Lule}, Sweden.
* All rights reserved.
*
* This code is derived from software contributed to Ludd by Bertram Barth.
*
* 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}, Sweden and its contributors.
* 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.
*/
/*** needs to be completed MK-990306 ***/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <uvm/uvm_extern.h>
#include <machine/pte.h>
#include <machine/cpu.h>
#include <machine/mtpr.h>
#include <machine/sid.h>
#include <machine/pmap.h>
#include <machine/nexus.h>
#include <machine/uvax.h>
#include <machine/ka410.h>
#include <machine/ka420.h>
#include <machine/ka48.h>
#include <machine/clock.h>
#include <machine/vsbus.h>
static void ka48_conf(void);
static void ka48_steal_pages(void);
static void ka48_memerr(void);
static int ka48_mchk(caddr_t);
static void ka48_halt(void);
static void ka48_reboot(int);
static void ka48_cache_enable(void);
struct vs_cpu *ka48_cpu;
/*
* Declaration of 48-specific calls.
*/
struct cpu_dep ka48_calls = {
ka48_steal_pages,
ka48_mchk,
ka48_memerr,
ka48_conf,
chip_clkread,
chip_clkwrite,
6, /* ~VUPS */
2, /* SCB pages */
ka48_halt,
ka48_reboot,
};
void
ka48_conf()
{
char *cpuname;
switch((vax_siedata >> 8) & 0xFF) {
case VAX_STYP_45:
cpuname = "KA45";
break;
case VAX_STYP_48:
cpuname = "KA48";
break;
default:
cpuname = "Unknown SOC";
}
printf("cpu: %s\n", cpuname);
ka48_cpu = (void *)vax_map_physmem(VS_REGS, 1);
printf("cpu: turning on floating point chip\n");
mtpr(2, PR_ACCS); /* Enable floating points */
/*
* Setup parameters necessary to read time from clock chip.
*/
clk_adrshift = 1; /* Addressed at long's... */
clk_tweak = 2; /* ...and shift two */
clk_page = (short *)vax_map_physmem(VS_CLOCK, 1);
}
void
ka48_cache_enable()
{
int i, *tmp;
long *par_ctl = (long *)KA48_PARCTL;
/* Disable cache */
mtpr(0, PR_CADR); /* disable */
*par_ctl &= ~KA48_PARCTL_INVENA; /* clear ? invalid enable */
mtpr(2, PR_CADR); /* flush */
/* Clear caches */
tmp = (void *)KA48_INVFLT; /* inv filter */
for (i = 0; i < KA48_INVFLTSZ / sizeof(int); i++)
tmp[i] = 0;
*par_ctl |= KA48_PARCTL_INVENA; /* Enable ???? */
mtpr(4, PR_CADR); /* enable cache */
*par_ctl |= (KA48_PARCTL_AGS | /* AGS? */
KA48_PARCTL_NPEN | /* N? Parity Enable */
KA48_PARCTL_CPEN); /* Cpu parity enable */
}
void
ka48_memerr()
{
printf("Memory err!\n");
}
int
ka48_mchk(addr)
caddr_t addr;
{
panic("Machine check");
return 0;
}
void
ka48_steal_pages()
{
/* Turn on caches (to speed up execution a bit) */
ka48_cache_enable();
}
#define KA48_CPMBX 0x38
#define KA48_HLT_HALT 0xcf /* 11001111 */
#define KA48_HLT_BOOT 0x8b /* 10001011 */
static void
ka48_halt()
{
if (((u_int8_t *) clk_page)[KA48_CPMBX] != KA48_HLT_HALT)
((u_int8_t *) clk_page)[KA48_CPMBX] = KA48_HLT_HALT;
asm("halt");
}
static void
ka48_reboot(arg)
int arg;
{
if (((u_int8_t *) clk_page)[KA48_CPMBX] != KA48_HLT_BOOT)
((u_int8_t *) clk_page)[KA48_CPMBX] = KA48_HLT_BOOT;
asm("halt");
}