/[gxemul]/trunk/src/disk/bootblock_apple.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /trunk/src/disk/bootblock_apple.c

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Revision 36 - (show annotations)
Mon Oct 8 16:21:34 2007 UTC (13 years, 1 month ago) by dpavlin
File MIME type: text/plain
File size: 3569 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1497 2007/03/18 03:41:36 debug Exp $
20070224	Minor update to the initialization of the ns16550 in
		machine_walnut.c, to allow that machine type to boot with the
		new interrupt system (although it is still a dummy machine).
		Adding a wdc at 0x14000000 to machine_landisk.c, and fixing
		the SCIF serial interrupts of the SH4 cpu enough to get
		NetBSD/landisk booting from a disk image :-)  Adding a
		preliminary install instruction skeleton to guestoses.html.
20070306	Adding SH-IPL+G PROM emulation, and also passing the "end"
		symbol in r5 on bootup, for Landisk emulation. This is enough
		to get OpenBSD/landisk to install :)  Adding a preliminary
		install instruction skeleton to the documentation. SuperH
		emulation is still shaky, though :-/
20070307	Fixed a strangeness in memory_sh.c (read/write was never
		returned for any page). (Unknown whether this fixes any actual
		problems, though.)
20070308	dev_ram.c fix: invalidate code translations on writes to
		RAM, emulated as separate devices. Linux/dreamcast gets
		further in the boot process than before, but still bugs out
		in userland.
		Fixing bugs in the "stc.l gbr,@-rN" and "ldc.l @rN+,gbr" SuperH 
		instructions (they should NOT check the MD bit), allowing the
		Linux/dreamcast Live CD to reach userland correctly :-)
20070310	Changing the cpu name "Alpha" in src/useremul.c to "21364" to
		unbreak userland syscall emulation of FreeBSD/Alpha binaries.
20070314	Applying a patch from Michael Yaroslavtsev which fixes the
		previous Linux lib64 patch to the configure script.
20070315	Adding a (dummy) sun4v machine type, and SPARC T1 cpu type.
20070316	Creating a new directory, src/disk, and moving diskimage.c
		to it. Separating out bootblock loading stuff from emul.c into
		new files in src/disk.
		Adding some more SPARC registers.
20070318	Preparing/testing for a minirelease, 0.4.4.1.

==============  RELEASE 0.4.4.1  ==============


1 /*
2 * Copyright (C) 2006-2007 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: bootblock_apple.c,v 1.1 2007/03/16 14:45:30 debug Exp $
29 *
30 * Apple bootblock handling.
31 *
32 * TODO: This is just a quick hack skeleton. Doesn't really work yet.
33 */
34
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38
39 #include "diskimage.h"
40 #include "misc.h"
41
42
43 /*
44 * apple_load_bootblock():
45 *
46 * Try to load a kernel from a disk image with an Apple Partition Table.
47 *
48 * TODO: This function uses too many magic offsets and so on; it should be
49 * cleaned up some day. See http://www.awprofessional.com/articles/
50 * article.asp?p=376123&seqNum=3&rl=1 for some info on the Apple
51 * partition format.
52 *
53 * Returns 1 on success, 0 on failure.
54 */
55 int apple_load_bootblock(struct machine *m, struct cpu *cpu,
56 int disk_id, int disk_type, int *n_loadp, char ***load_namesp)
57 {
58 unsigned char buf[0x8000];
59 int res, partnr, n_partitions = 0, n_hfs_partitions = 0;
60 uint64_t hfs_start, hfs_length;
61
62 res = diskimage_access(m, disk_id, disk_type, 0, 0x0, buf, sizeof(buf));
63 if (!res) {
64 fatal("apple_load_bootblock: couldn't read the disk "
65 "image. Aborting.\n");
66 return 0;
67 }
68
69 partnr = 0;
70 do {
71 int start, length;
72 int ofs = 0x200 * (partnr + 1);
73 if (partnr == 0)
74 n_partitions = buf[ofs + 7];
75 start = ((uint64_t)buf[ofs + 8] << 24) + (buf[ofs + 9] << 16) +
76 (buf[ofs + 10] << 8) + buf[ofs + 11];
77 length = ((uint64_t)buf[ofs+12] << 24) + (buf[ofs + 13] << 16) +
78 (buf[ofs + 14] << 8) + buf[ofs + 15];
79
80 debug("partition %i: '%s', type '%s', start %i, length %i\n",
81 partnr, buf + ofs + 0x10, buf + ofs + 0x30,
82 start, length);
83
84 if (strcmp((char *)buf + ofs + 0x30, "Apple_HFS") == 0) {
85 n_hfs_partitions ++;
86 hfs_start = 512 * start;
87 hfs_length = 512 * length;
88 }
89
90 /* Any more partitions? */
91 partnr ++;
92 } while (partnr < n_partitions);
93
94 if (n_hfs_partitions == 0) {
95 fatal("Error: No HFS partition found! TODO\n");
96 return 0;
97 }
98 if (n_hfs_partitions >= 2) {
99 fatal("Error: Too many HFS partitions found! TODO\n");
100 return 0;
101 }
102
103 return 0;
104 }
105
106

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