329 lines
7.9 KiB
C
329 lines
7.9 KiB
C
/* $NetBSD: bootxx.c,v 1.9 2000/06/04 19:58:17 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 "lib/libsa/cd9660.h"
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#include "lib/libkern/libkern.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 1 /* Kludge */
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#define NCMD 1 /* Kludge */
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#include "dev/mscp/mscp.h"
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#include "dev/mscp/mscpreg.h"
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#include "../boot/data.h"
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void Xmain(void);
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void hoppabort(int);
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void romread_uvax(int lbn, int size, void *buf, struct rpb *rpb);
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void hpread(int block);
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int read750(int block, int *regs);
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int unit_init(int, struct rpb *, int);
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struct open_file file;
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unsigned *bootregs;
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struct rpb *rpb;
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struct bqo *bqo;
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int vax_cputype;
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struct udadevice {u_short udaip;u_short udasa;};
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volatile struct udadevice *csr;
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extern int from;
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#define FROM750 1
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#define FROMMV 2
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#define FROMVMB 4
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/*
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* The boot block are used by 11/750, 8200, MicroVAX II/III, VS2000,
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* VS3100/??, VS4000 and VAX6000/???, and only when booting from disk.
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*/
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void
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Xmain()
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{
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int io;
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vax_cputype = (mfpr(PR_SID) >> 24) & 0xFF;
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/*
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*/
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rpb = (void *)0xf0000; /* Safe address right now */
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bqo = (void *)0xf1000;
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if (from == FROMMV) {
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/*
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* now relocate rpb/bqo (which are used by ROM-routines)
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*/
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bcopy ((void *)bootregs[11], rpb, sizeof(struct rpb));
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bcopy ((void*)rpb->iovec, bqo, rpb->iovecsz);
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if (rpb->devtyp == BDEV_SDN)
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rpb->devtyp = BDEV_SD; /* XXX until driver fixed */
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} else {
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bzero(rpb, sizeof(struct rpb));
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rpb->devtyp = bootregs[0];
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rpb->unit = bootregs[3];
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rpb->rpb_bootr5 = bootregs[5];
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rpb->csrphy = bootregs[2];
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rpb->adpphy = bootregs[1]; /* BI node on 8200 */
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if (rpb->devtyp != BDEV_HP && vax_cputype == VAX_TYP_750)
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rpb->adpphy =
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(bootregs[1] == 0xffe000 ? 0xf30000 : 0xf32000);
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}
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rpb->rpb_base = rpb;
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rpb->iovec = (int)bqo;
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io = open("/boot.vax", 0);
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if (io < 0)
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io = open("/boot", 0);
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if (io < 0)
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asm("halt");
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read(io, (void *)0x10000, 0x10000);
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bcopy((void *) 0x10000, 0, 0xffff);
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hoppabort(32);
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asm("halt");
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}
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/*
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* Write an extremely limited version of a (us)tar filesystem, suitable
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* for loading secondary-stage boot loader.
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* - Can only load file "boot".
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* - Must be the first file on tape.
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*/
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struct fs_ops file_system[] = {
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{ ufs_open, 0, ufs_read, 0, 0, ufs_stat },
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{ cd9660_open, 0, cd9660_read, 0, 0, cd9660_stat },
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#if 0
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{ ustarfs_open, 0, ustarfs_read, 0, 0, ustarfs_stat },
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#endif
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};
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int nfsys = (sizeof(file_system) / sizeof(struct fs_ops));
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#if 0
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int tar_open(char *path, struct open_file *f);
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ssize_t tar_read(struct open_file *f, void *buf, size_t size, size_t *resid);
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int
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tar_open(path, f)
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char *path;
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struct open_file *f;
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{
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char *buf = alloc(512);
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bzero(buf, 512);
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romstrategy(0, 0, 8192, 512, buf, 0);
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if (bcmp(buf, "boot", 5) || bcmp(&buf[257], "ustar", 5))
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return EINVAL; /* Not a ustarfs with "boot" first */
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return 0;
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}
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ssize_t
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tar_read(f, buf, size, resid)
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struct open_file *f;
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void *buf;
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size_t size;
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size_t *resid;
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{
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romstrategy(0, 0, (8192+512), size, buf, 0);
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*resid = size;
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return 0; /* XXX */
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}
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#endif
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int
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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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*file = (char *)fname;
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if (from == FROM750)
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return 0;
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/*
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* Reinit the VMB boot device.
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*/
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if (bqo->unit_init) {
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int initfn;
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initfn = rpb->iovec + bqo->unit_init;
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if (rpb->devtyp == BDEV_UDA || rpb->devtyp == BDEV_TK) {
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/*
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* This reset do not seem to be done in the
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* ROM routines, so we have to do it manually.
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*/
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csr = (struct udadevice *)rpb->csrphy;
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csr->udaip = 0;
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while ((csr->udasa & MP_STEP1) == 0)
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;
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}
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/*
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* AP (R12) have a pointer to the VMB argument list,
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* wanted by bqo->unit_init.
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*/
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unit_init(initfn, rpb, bootregs[12]);
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}
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return 0;
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}
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int
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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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size_t size;
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void *buf;
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size_t *rsize;
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{
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int block = dblk;
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int nsize = size;
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if (from == FROMMV) {
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romread_uvax(block, size, buf, rpb);
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} else /* if (from == FROM750) */ {
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while (size > 0) {
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if (rpb->devtyp == BDEV_HP)
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hpread(block);
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else
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read750(block, bootregs);
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bcopy(0, buf, 512);
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size -= 512;
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(char *)buf += 512;
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block++;
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}
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}
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if (rsize)
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*rsize = nsize;
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return 0;
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}
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/*
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* The 11/750 boot ROM for Massbus disks doesn't seen to have layout info
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* for all RP disks (not RP07 at least) so therefore a very small and dumb
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* device driver is used. It assumes that there is a label on the disk
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* already that has valid layout info. If there is no label, we can't boot
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* anyway.
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*/
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#define MBA_WCSR(reg, val) \
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((void)(*(volatile u_int32_t *)((adpadr) + (reg)) = (val)));
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#define MBA_RCSR(reg) \
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(*(volatile u_int32_t *)((adpadr) + (reg)))
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#define HP_WCSR(reg, val) \
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((void)(*(volatile u_int32_t *)((unitadr) + (reg)) = (val)));
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#define HP_RCSR(reg) \
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(*(volatile u_int32_t *)((unitadr) + (reg)))
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void
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hpread(int bn)
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{
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int adpadr = bootregs[1];
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int unitadr = adpadr + MUREG(bootregs[3], 0);
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u_int cn, sn, tn;
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struct disklabel *dp;
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extern char start;
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dp = (struct disklabel *)(LABELOFFSET + &start);
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MBA_WCSR(MAPREG(0), PG_V);
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MBA_WCSR(MBA_VAR, 0);
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MBA_WCSR(MBA_BC, (~512) + 1);
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#ifdef __GNUC__
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/*
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* Avoid four subroutine calls by using hardware division.
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*/
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asm("clrl r1;movl %3,r0;ediv %4,r0,%0,%1;movl %1,r0;ediv %5,r0,%2,%1"
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: "=g"(cn),"=g"(sn),"=g"(tn)
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: "g"(bn),"g"(dp->d_secpercyl),"g"(dp->d_nsectors)
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: "r0","r1","cc");
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#else
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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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#endif
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HP_WCSR(HP_DC, cn);
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HP_WCSR(HP_DA, (tn << 8) | sn);
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HP_WCSR(HP_CS1, HPCS_READ);
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while (MBA_RCSR(MBA_SR) & MBASR_DTBUSY)
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;
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return;
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}
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extern char end[];
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static char *top = (char*)end;
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void *
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alloc(size)
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unsigned size;
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{
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void *ut = top;
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top += size;
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return ut;
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}
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void
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free(ptr, size)
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void *ptr;
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unsigned size;
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{
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}
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int
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romclose(f)
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struct open_file *f;
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{
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return 0;
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}
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