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      1 /*	$NetBSD: rom.c,v 1.11 2022/04/25 15:06:34 mlelstv Exp $ */
      2 /*
      3  * Copyright (c) 1996 Ludd, University of Lule}, Sweden.
      4  * All rights reserved.
      5  *
      6  * This code is derived from software contributed to Ludd by
      7  * Bertram Barth.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28  */
     29 
     30 #include <sys/param.h>
     31 #include <sys/reboot.h>
     32 #include <sys/disklabel.h>
     33 
     34 #define RF_PROTECTED_SECTORS	64	/* XXX <dev/raidframe/raidframevar.h> */
     35 
     36 #include <lib/libsa/stand.h>
     37 #include <lib/libsa/ufs.h>
     38 
     39 #include <lib/libkern/libkern.h>
     40 
     41 #include "../include/pte.h"
     42 #include "../include/sid.h"
     43 #include "../include/mtpr.h"
     44 #include "../include/reg.h"
     45 #include "../include/rpb.h"
     46 
     47 #include "data.h"
     48 #include "vaxstand.h"
     49 
     50 static struct disklabel romlabel;
     51 static char io_buf[DEV_BSIZE];
     52 static struct bqo *bqo;
     53 static int dpart, dunit;
     54 
     55 int
     56 romopen(struct open_file *f, int adapt, int ctlr, int unit, int part)
     57 {
     58 	char *msg;
     59 	struct disklabel *lp = &romlabel;
     60 	size_t i;
     61 	int err;
     62 
     63 	bqo = (void *)bootrpb.iovec;
     64 
     65 	memset(lp, 0, sizeof(struct disklabel));
     66 	dunit = unit;
     67 	dpart = part;
     68 
     69 	err = romstrategy(0, F_READ, LABELSECTOR, DEV_BSIZE, io_buf, &i);
     70 	if (err) {
     71 		printf("reading disklabel: %s\n",strerror(err));
     72 		return 0;
     73 	}
     74 	msg = getdisklabel(io_buf+LABELOFFSET, lp);
     75 	if (msg)
     76 		printf("getdisklabel: %s\n",msg);
     77 	return(0);
     78 }
     79 
     80 int	romwrite_uvax(int, int, void *, struct rpb *);
     81 int	romread_uvax(int, int, void *, struct rpb *);
     82 
     83 int
     84 romstrategy (void *f, int func, daddr_t dblk, size_t size, void *buf, size_t *rsize)
     85 {
     86 	struct	disklabel *lp;
     87 	int	block;
     88 
     89 	lp = &romlabel;
     90 	block = dblk + lp->d_partitions[dpart].p_offset;
     91 	if (dunit >= 0 && dunit < 10)
     92 		bootrpb.unit = dunit;
     93 	if (lp->d_partitions[dpart].p_fstype == FS_RAID)
     94 		block += RF_PROTECTED_SECTORS;
     95 
     96 	if (func == F_WRITE)
     97 		romwrite_uvax(block, size, buf, &bootrpb);
     98 	else
     99 		romread_uvax(block, size, buf, &bootrpb);
    100 
    101 	*rsize = size;
    102 	return 0;
    103 }
    104 
    105 int
    106 romioctl(struct open_file *f, u_long cmd, void *data)
    107 {
    108 	return ENOTTY;
    109 }
    110