/[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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Annotation of /trunk/src/disk/bootblock_apple.c

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Revision 36 - (hide annotations)
Mon Oct 8 16:21:34 2007 UTC (13 years, 3 months 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 dpavlin 36 /*
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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