1*6d3ceb1dSskrll /* $NetBSD: dk.c,v 1.1 2014/02/24 07:23:43 skrll Exp $ */
2*6d3ceb1dSskrll
3*6d3ceb1dSskrll /* $OpenBSD: dk.c,v 1.5 1999/04/20 20:01:01 mickey Exp $ */
4*6d3ceb1dSskrll
5*6d3ceb1dSskrll /*
6*6d3ceb1dSskrll * Copyright 1996 1995 by Open Software Foundation, Inc.
7*6d3ceb1dSskrll * All Rights Reserved
8*6d3ceb1dSskrll *
9*6d3ceb1dSskrll * Permission to use, copy, modify, and distribute this software and
10*6d3ceb1dSskrll * its documentation for any purpose and without fee is hereby granted,
11*6d3ceb1dSskrll * provided that the above copyright notice appears in all copies and
12*6d3ceb1dSskrll * that both the copyright notice and this permission notice appear in
13*6d3ceb1dSskrll * supporting documentation.
14*6d3ceb1dSskrll *
15*6d3ceb1dSskrll * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
16*6d3ceb1dSskrll * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
17*6d3ceb1dSskrll * FOR A PARTICULAR PURPOSE.
18*6d3ceb1dSskrll *
19*6d3ceb1dSskrll * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
20*6d3ceb1dSskrll * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
21*6d3ceb1dSskrll * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
22*6d3ceb1dSskrll * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
23*6d3ceb1dSskrll * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24*6d3ceb1dSskrll *
25*6d3ceb1dSskrll */
26*6d3ceb1dSskrll
27*6d3ceb1dSskrll #include "libsa.h"
28*6d3ceb1dSskrll
29*6d3ceb1dSskrll #include <sys/param.h>
30*6d3ceb1dSskrll #include <sys/disklabel.h>
31*6d3ceb1dSskrll #include <sys/reboot.h>
32*6d3ceb1dSskrll #include <machine/pdc.h>
33*6d3ceb1dSskrll #include <machine/iomod.h>
34*6d3ceb1dSskrll
35*6d3ceb1dSskrll #include "dev_hppa.h"
36*6d3ceb1dSskrll
37*6d3ceb1dSskrll const char *dk_disklabel(struct hppa_dev *, struct disklabel *);
38*6d3ceb1dSskrll
39*6d3ceb1dSskrll iodcio_t dkiodc; /* boot IODC entry point */
40*6d3ceb1dSskrll
41*6d3ceb1dSskrll const char *
dk_disklabel(struct hppa_dev * dp,struct disklabel * label)42*6d3ceb1dSskrll dk_disklabel(struct hppa_dev *dp, struct disklabel *label)
43*6d3ceb1dSskrll {
44*6d3ceb1dSskrll char buf[DEV_BSIZE];
45*6d3ceb1dSskrll size_t ret;
46*6d3ceb1dSskrll
47*6d3ceb1dSskrll if (iodcstrategy(dp, F_READ, LABELSECTOR, DEV_BSIZE, buf, &ret) ||
48*6d3ceb1dSskrll ret != DEV_BSIZE)
49*6d3ceb1dSskrll return "can't read disklabel";
50*6d3ceb1dSskrll
51*6d3ceb1dSskrll return (getdisklabel(buf, label));
52*6d3ceb1dSskrll }
53*6d3ceb1dSskrll
54*6d3ceb1dSskrll int
dkopen(struct open_file * f,...)55*6d3ceb1dSskrll dkopen(struct open_file *f, ...)
56*6d3ceb1dSskrll {
57*6d3ceb1dSskrll struct disklabel dkl;
58*6d3ceb1dSskrll struct hppa_dev *dp = f->f_devdata;
59*6d3ceb1dSskrll const char *st;
60*6d3ceb1dSskrll u_int i;
61*6d3ceb1dSskrll
62*6d3ceb1dSskrll #ifdef DEBUG
63*6d3ceb1dSskrll if (debug)
64*6d3ceb1dSskrll printf("dkopen(%p)\n", f);
65*6d3ceb1dSskrll #endif
66*6d3ceb1dSskrll
67*6d3ceb1dSskrll if (!(dp->pz_dev = pdc_findev(-1, PCL_RANDOM)))
68*6d3ceb1dSskrll return ENXIO;
69*6d3ceb1dSskrll
70*6d3ceb1dSskrll dp->part_off = 0;
71*6d3ceb1dSskrll st = NULL;
72*6d3ceb1dSskrll #ifdef DEBUG
73*6d3ceb1dSskrll if (debug)
74*6d3ceb1dSskrll printf ("disklabel\n");
75*6d3ceb1dSskrll #endif
76*6d3ceb1dSskrll if ((st = dk_disklabel(dp, &dkl)) != NULL) {
77*6d3ceb1dSskrll #ifdef DEBUG
78*6d3ceb1dSskrll if (debug)
79*6d3ceb1dSskrll printf ("dkopen: %s\n", st);
80*6d3ceb1dSskrll #endif
81*6d3ceb1dSskrll /*
82*6d3ceb1dSskrll * Ignore disklabel errors for this two reasons:
83*6d3ceb1dSskrll * 1. It is possible to dd(1) a LIF image containing the bootloader
84*6d3ceb1dSskrll * and a kernel with attached RAM disk to disk and boot it. That way
85*6d3ceb1dSskrll * the netboot installation LIF image is also usable as disk boot
86*6d3ceb1dSskrll * image.
87*6d3ceb1dSskrll * 2. Some old 700 machines report a wrong device class in
88*6d3ceb1dSskrll * PAGE0->mem_boot.pz_class when net booting. (PCL_RANDOM instead
89*6d3ceb1dSskrll * PCL_NET_MASK|PCL_SEQU) So the bootloader thinks it is booting
90*6d3ceb1dSskrll * from disk when it is actually net booting. The net boot LIF image
91*6d3ceb1dSskrll * contains no disklabel so the test for the disklabel will fail.
92*6d3ceb1dSskrll * If the device open fails if there is no disklabel we are not able
93*6d3ceb1dSskrll * to netboot those machines.
94*6d3ceb1dSskrll * Therefore the error is ignored. The bootloader will fall back to
95*6d3ceb1dSskrll * LIF later when there is no disklabel / FFS partition.
96*6d3ceb1dSskrll * At the moment it doesn't matter that the wrong device type ("dk"
97*6d3ceb1dSskrll * instead "lf") is used, as all I/O is abstracted by the firmware.
98*6d3ceb1dSskrll * To get the correct device type it would be necessary to add a
99*6d3ceb1dSskrll * quirk table to the switch() in dev_hppa.c:devboot().
100*6d3ceb1dSskrll */
101*6d3ceb1dSskrll } else {
102*6d3ceb1dSskrll i = B_PARTITION(dp->bootdev);
103*6d3ceb1dSskrll #ifdef DEBUG
104*6d3ceb1dSskrll if (debug)
105*6d3ceb1dSskrll printf("bootdev 0x%x, partition %u\n", dp->bootdev, i);
106*6d3ceb1dSskrll #endif
107*6d3ceb1dSskrll if (i >= dkl.d_npartitions || !dkl.d_partitions[i].p_size) {
108*6d3ceb1dSskrll return (EPART);
109*6d3ceb1dSskrll }
110*6d3ceb1dSskrll dp->part_off = dkl.d_partitions[i].p_offset * dkl.d_secsize;
111*6d3ceb1dSskrll }
112*6d3ceb1dSskrll #ifdef DEBUGBUG
113*6d3ceb1dSskrll if (debug)
114*6d3ceb1dSskrll printf ("dkopen() ret\n");
115*6d3ceb1dSskrll #endif
116*6d3ceb1dSskrll return (0);
117*6d3ceb1dSskrll }
118*6d3ceb1dSskrll
119*6d3ceb1dSskrll int
dkclose(struct open_file * f)120*6d3ceb1dSskrll dkclose(struct open_file *f)
121*6d3ceb1dSskrll {
122*6d3ceb1dSskrll dealloc(f->f_devdata, sizeof(struct hppa_dev));
123*6d3ceb1dSskrll f->f_devdata = NULL;
124*6d3ceb1dSskrll return 0;
125*6d3ceb1dSskrll }
126