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Annotation of sys/arch/vax/boot/boot/rom.c, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: rom.c,v 1.4 2002/06/11 09:36:23 hugh Exp $ */
        !             2: /*     $NetBSD: rom.c,v 1.3 2000/07/19 00:58:25 matt Exp $ */
        !             3: /*
        !             4:  * Copyright (c) 1996 Ludd, University of Lule}, Sweden.
        !             5:  * All rights reserved.
        !             6:  *
        !             7:  * This code is derived from software contributed to Ludd by
        !             8:  * Bertram Barth.
        !             9:  *
        !            10:  * Redistribution and use in source and binary forms, with or without
        !            11:  * modification, are permitted provided that the following conditions
        !            12:  * are met:
        !            13:  * 1. Redistributions of source code must retain the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer.
        !            15:  * 2. Redistributions in binary form must reproduce the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer in the
        !            17:  *    documentation and/or other materials provided with the distribution.
        !            18:  * 3. All advertising materials mentioning features or use of this software
        !            19:  *    must display the following acknowledgement:
        !            20:  *      This product includes software developed at Ludd, University of
        !            21:  *      Lule}, Sweden and its contributors.
        !            22:  * 4. The name of the author may not be used to endorse or promote products
        !            23:  *    derived from this software without specific prior written permission
        !            24:  *
        !            25:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
        !            26:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
        !            27:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
        !            28:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
        !            29:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
        !            30:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
        !            31:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
        !            32:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
        !            33:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
        !            34:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            35:  */
        !            36:
        !            37: #include "sys/param.h"
        !            38: #include "sys/reboot.h"
        !            39: #include "sys/disklabel.h"
        !            40:
        !            41: #include "lib/libsa/stand.h"
        !            42: #include "lib/libsa/ufs.h"
        !            43:
        !            44: #include "../include/pte.h"
        !            45: #include "../include/sid.h"
        !            46: #include "../include/mtpr.h"
        !            47: #include "../include/reg.h"
        !            48: #include "../include/rpb.h"
        !            49:
        !            50: #include "data.h"
        !            51: #include "vaxstand.h"
        !            52:
        !            53: static struct disklabel romlabel;
        !            54: static char io_buf[DEV_BSIZE];
        !            55: static struct bqo *bqo;
        !            56: static int dpart, dunit;
        !            57:
        !            58: int
        !            59: romopen(struct open_file *f, int adapt, int ctlr, int unit, int part)
        !            60: {
        !            61:        char *msg;
        !            62:        struct disklabel *lp = &romlabel;
        !            63:        size_t i;
        !            64:        int err;
        !            65:
        !            66:        bqo = (void *)bootrpb.iovec;
        !            67:
        !            68:        if (bootrpb.unit > 0 && (bootrpb.unit % 100) == 0) {
        !            69:                printf ("changing bootrpb.unit from %d ", bootrpb.unit);
        !            70:                bootrpb.unit /= 100;
        !            71:                printf ("to %d\n", bootrpb.unit);
        !            72:        }
        !            73:
        !            74:        bzero(lp, sizeof(struct disklabel));
        !            75:        dunit = unit;
        !            76:        dpart = part;
        !            77:
        !            78:        err = romstrategy(0, F_READ, LABELSECTOR, DEV_BSIZE, io_buf, &i);
        !            79:        if (err) {
        !            80:                printf("reading disklabel: %s\n",strerror(err));
        !            81:                return 0;
        !            82:        }
        !            83:        msg = getdisklabel(io_buf+LABELOFFSET, lp);
        !            84:        if (msg)
        !            85:                printf("getdisklabel: %s\n",msg);
        !            86:        return(0);
        !            87: }
        !            88:
        !            89: int    romwrite_uvax(int, int, void *, struct rpb *);
        !            90: int    romread_uvax(int, int, void *, struct rpb *);
        !            91:
        !            92: int
        !            93: romstrategy (f, func, dblk, size, buf, rsize)
        !            94:        void *f;
        !            95:        int func;
        !            96:        daddr_t dblk;
        !            97:        size_t size;
        !            98:        void *buf;
        !            99:        size_t *rsize;
        !           100: {
        !           101:        struct  disklabel *lp;
        !           102:        int     block;
        !           103:
        !           104:        lp = &romlabel;
        !           105:        block = dblk + lp->d_partitions[dpart].p_offset;
        !           106:        if (dunit >= 0 && dunit < 10)
        !           107:                bootrpb.unit = dunit;
        !           108:
        !           109:        if (func == F_WRITE)
        !           110:                romwrite_uvax(block, size, buf, &bootrpb);
        !           111:        else
        !           112:                romread_uvax(block, size, buf, &bootrpb);
        !           113:
        !           114:        *rsize = size;
        !           115:        return 0;
        !           116: }
        !           117: