406 lines
9.9 KiB
C
406 lines
9.9 KiB
C
/* $NetBSD: bootxx.c,v 1.5 1996/02/17 18:23:21 ragge Exp $ */
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/*-
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* Copyright (c) 1982, 1986 The Regents of the University of California.
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* All rights reserved.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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* @(#)boot.c 7.15 (Berkeley) 5/4/91
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*/
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#include "sys/param.h"
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#include "sys/reboot.h"
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#include "sys/disklabel.h"
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#include "lib/libsa/stand.h"
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#include "lib/libsa/ufs.h"
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#include "../include/pte.h"
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#include "../include/sid.h"
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#include "../include/mtpr.h"
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#include "../include/reg.h"
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#include "../include/rpb.h"
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#include "../mba/mbareg.h"
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#include "../mba/hpreg.h"
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#define NRSP 0 /* Kludge */
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#define NCMD 0 /* Kludge */
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#include "../uba/ubareg.h"
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#include "../uba/udareg.h"
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#include "../vax/mscp.h"
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#include "data.h"
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#include "vaxstand.h"
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#include <a.out.h>
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int romstrategy(), romopen();
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int command(int, int);
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/*
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* Boot program... argume passed in r10 and r11 determine whether boot
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* stops to ask for system name and which device boot comes from.
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*/
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volatile u_int devtype, bootdev;
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unsigned opendev, boothowto, bootset;
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int cpu_type, cpunumber;
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unsigned *bootregs;
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int is_750 = 0, is_mvax = 0, is_tmscp = 0;
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struct rpb *rpb;
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main()
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{
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int io;
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char *hej = "/boot";
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cpu_type = mfpr(PR_SID);
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cpunumber = (mfpr(PR_SID) >> 24) & 0xFF;
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switch (cpunumber) {
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case VAX_78032:
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case VAX_650:
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{
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int cpu_sie; /* sid-extension */
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is_mvax = 1;
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cpu_sie = *((int *) 0x20040004) >> 24;
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cpu_type |= cpu_sie;
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rpb = (struct rpb *)bootregs[11];
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bootdev = rpb->devtyp;
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break;
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}
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case VAX_750:
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is_750 = 1;
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bootdev = bootregs[10];
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break;
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}
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bootset = getbootdev();
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printf("\nhowto 0x%x, bdev 0x%x, booting...\n", boothowto, bootdev);
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io = open(hej, 0);
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if (io >= 0 && io < SOPEN_MAX) {
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copyunix(io);
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} else {
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printf("Boot failed. errno %d (%s)\n", errno, strerror(errno));
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}
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}
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/* ARGSUSED */
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copyunix(aio)
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{
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struct exec x;
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register int io = aio, i;
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char *addr;
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i = read(io, (char *) &x, sizeof(x));
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if (i != sizeof(x) || N_BADMAG(x)) {
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printf("Bad format: errno %s\n", strerror(errno));
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return;
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}
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printf("%d", x.a_text);
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if (N_GETMAGIC(x) == ZMAGIC && lseek(io, N_TXTADDR(x), SEEK_SET) == -1)
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goto shread;
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if (read(io, (char *) 0x10000, x.a_text) != x.a_text)
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goto shread;
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addr = (char *) x.a_text;
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if (N_GETMAGIC(x) == ZMAGIC || N_GETMAGIC(x) == NMAGIC)
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while ((int) addr & CLOFSET)
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*addr++ = 0;
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printf("+%d", x.a_data);
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if (read(io, addr + 0x10000, x.a_data) != x.a_data)
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goto shread;
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addr += x.a_data;
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bcopy((void *) 0x10000, 0, (int) addr);
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printf("+%d", x.a_bss);
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for (i = 0; i < x.a_bss; i++)
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*addr++ = 0;
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for (i = 0; i < 128 * 512; i++) /* slop */
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*addr++ = 0;
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printf(" start 0x%x\n", x.a_entry);
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hoppabort(x.a_entry, boothowto, bootset);
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(*((int (*) ()) x.a_entry)) ();
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return;
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shread:
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printf("Short read\n");
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return;
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}
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getbootdev()
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{
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int i, major, adaptor, controller, unit, partition;
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switch (cpunumber) {
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case VAX_78032:
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case VAX_650:
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adaptor = 0;
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controller = ((rpb->csrphy & 017777) == 0xDC)?1:0;
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unit = rpb->unit; /* DUC, DUD? */
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break;
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case VAX_750:
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controller = 0; /* XXX Actually massbuss can be on 3 ctlr's */
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unit = bootregs[3];
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break;
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}
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partition = 0;
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switch (bootdev) {
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case 0: /* massbuss boot */
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major = 0; /* hp / ... */
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adaptor = (bootregs[1] & 0x6000) >> 17;
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break;
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case 17: /* UDA50 boot */
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major = 9; /* ra / mscp */
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if (is_750)
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adaptor = (bootregs[1] & 0x40000 ? 0 : 1);
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break;
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case 18: /* TK50 boot */
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major = 15; /* tms / tmscp */
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is_tmscp = 1; /* use tape spec in mscp routines */
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break;
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case 64:
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major = 8;
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break;
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default:
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printf("Unsupported boot device %d, trying anyway.\n", bootdev);
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boothowto |= (RB_SINGLE | RB_ASKNAME);
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}
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return MAKEBOOTDEV(major, adaptor, controller, unit, partition);
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}
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struct devsw devsw[] = {
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SADEV("rom", romstrategy,nullsys,nullsys, noioctl),
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};
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int ndevs = (sizeof(devsw) / sizeof(devsw[0]));
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struct fs_ops file_system[] = {
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{ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek, ufs_stat}
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};
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int nfsys = (sizeof(file_system) / sizeof(struct fs_ops));
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struct disklabel lp;
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int part_off = 0; /* offset into partition holding /boot */
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char io_buf[MAXBSIZE];
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volatile struct uda {
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struct uda1ca uda_ca; /* communications area */
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struct mscp uda_rsp; /* response packets */
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struct mscp uda_cmd; /* command packets */
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} uda;
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volatile struct udadevice *csr;
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devopen(f, fname, file)
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struct open_file *f;
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const char *fname;
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char **file;
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{
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char *msg;
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int i, err, off;
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char line[64];
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f->f_dev = &devsw[0];
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*file = (char *)fname;
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/*
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* On uVAX we need to init [T]MSCP ctlr to be able to use it.
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*/
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if (is_mvax) {
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switch (bootdev) {
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case 17: /* MSCP */
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case 18: /* TMSCP */
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csr = (struct udadevice *)rpb->csrphy;
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csr->udaip = 0; /* Start init */
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while((csr->udasa & UDA_STEP1) == 0);
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csr->udasa = 0x8000;
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while((csr->udasa & UDA_STEP2) == 0);
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csr->udasa = (short)(((u_int)&uda)&0xffff) + 8;
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while((csr->udasa & UDA_STEP3) == 0);
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csr->udasa = 0x10;
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while((csr->udasa & UDA_STEP4) == 0);
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csr->udasa = 0x0001;
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uda.uda_ca.ca_rspdsc =
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(int) &uda.uda_rsp.mscp_cmdref;
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uda.uda_ca.ca_cmddsc =
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(int) &uda.uda_cmd.mscp_cmdref;
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if (is_tmscp)
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uda.uda_cmd.mscp_vcid = 1;
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command(M_OP_SETCTLRC, 0);
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uda.uda_cmd.mscp_unit = rpb->unit;
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command(M_OP_ONLINE, 0);
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}
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}
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/*
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* the disklabel _shall_ be at address LABELOFFSET + RELOC in
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* phys memory now, no need at all to reread it again.
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* Actually disklabel is only needed when using hp disks,
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* but it doesn't hurt to always get it.
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*/
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if (!is_tmscp) {
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msg = getdisklabel((void *)LABELOFFSET + RELOC, &lp);
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if (msg) {
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printf("getdisklabel: %s\n", msg);
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}
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}
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return 0;
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}
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command(cmd, arg)
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{
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volatile int hej;
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uda.uda_cmd.mscp_opcode = cmd;
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uda.uda_cmd.mscp_modifier = arg;
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uda.uda_cmd.mscp_msglen = MSCP_MSGLEN;
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uda.uda_rsp.mscp_msglen = MSCP_MSGLEN;
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uda.uda_ca.ca_rspdsc |= MSCP_OWN|MSCP_INT;
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uda.uda_ca.ca_cmddsc |= MSCP_OWN|MSCP_INT;
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hej = csr->udaip;
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while (uda.uda_ca.ca_rspdsc < 0);
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}
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int curblock = 0;
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romstrategy(sc, func, dblk, size, buf, rsize)
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void *sc;
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int func;
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daddr_t dblk;
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char *buf;
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int size, *rsize;
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{
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int i;
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int block = dblk;
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int nsize = size;
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switch (cpunumber) {
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case VAX_650:
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case VAX_78032:
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switch (bootdev) {
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case 17: /* MSCP */
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uda.uda_cmd.mscp_seq.seq_lbn = dblk;
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uda.uda_cmd.mscp_seq.seq_bytecount = size;
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uda.uda_cmd.mscp_seq.seq_buffer = (int)buf;
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uda.uda_cmd.mscp_unit = rpb->unit;
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command(M_OP_READ, 0);
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break;
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case 18: /* TMSCP */
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if (dblk < curblock) {
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uda.uda_cmd.mscp_seq.seq_bytecount =
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curblock - dblk;
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command(M_OP_POS, 12);
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} else {
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uda.uda_cmd.mscp_seq.seq_bytecount =
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dblk - curblock;
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command(M_OP_POS, 4);
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}
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curblock = size/512 + dblk;
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for (i = 0 ; i < size/512 ; i++) {
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uda.uda_cmd.mscp_seq.seq_lbn = 1;
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uda.uda_cmd.mscp_seq.seq_bytecount = 512;
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uda.uda_cmd.mscp_seq.seq_buffer =
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(int)buf + i * 512;
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uda.uda_cmd.mscp_unit = rpb->unit;
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command(M_OP_READ, 0);
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}
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break;
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}
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break;
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case VAX_750:
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if (bootdev) {
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while (size > 0) {
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if ((read750(block, bootregs) & 0x01) == 0)
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return 1;
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bcopy(0, buf, 512);
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size -= 512;
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buf += 512;
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block++;
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}
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} else
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hpread(block, size, buf);
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break;
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}
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*rsize = nsize;
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return 0;
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}
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hpread(block, size, buf)
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char *buf;
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{
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volatile struct mba_regs *mr = (void *) bootregs[1];
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volatile struct hp_drv *hd = (void*)&mr->mba_md[bootregs[3]];
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struct disklabel *dp = &lp;
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u_int pfnum, nsize, mapnr, bn, cn, sn, tn;
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pfnum = (u_int) buf >> PGSHIFT;
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for (mapnr = 0, nsize = size; (nsize + NBPG) > 0; nsize -= NBPG)
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*(int *)&mr->mba_map[mapnr++] = PG_V | pfnum++;
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mr->mba_var = ((u_int) buf & PGOFSET);
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mr->mba_bc = (~size) + 1;
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bn = block;
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cn = bn / dp->d_secpercyl;
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sn = bn % dp->d_secpercyl;
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tn = sn / dp->d_nsectors;
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sn = sn % dp->d_nsectors;
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hd->hp_dc = cn;
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hd->hp_da = (tn << 8) | sn;
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hd->hp_cs1 = HPCS_READ;
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while (mr->mba_sr & MBASR_DTBUSY);
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if (mr->mba_sr & MBACR_ABORT){
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return 1;
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}
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return 0;
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}
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