/[gxemul]/trunk/src/machines/machine_landisk.c
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Contents of /trunk/src/machines/machine_landisk.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: 3622 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: machine_landisk.c,v 1.7 2007/03/08 10:01:50 debug Exp $
29 *
30 * I-O DATA LANDISK USL-5P.
31 *
32 * This machine consists of:
33 *
34 * o) An SH4 processor, which includes serial console etc,
35 * o) an IDE controller at address 0x14000000,
36 * o) and a minimal SH-IPL+G PROM emulation layer (required to make
37 * OpenBSD/landisk boot).
38 */
39
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
43
44 #include "cpu.h"
45 #include "device.h"
46 #include "devices.h"
47 #include "machine.h"
48 #include "memory.h"
49 #include "misc.h"
50
51 #include "sh4_exception.h"
52
53
54 MACHINE_SETUP(landisk)
55 {
56 char tmpstr[300];
57
58 machine->machine_name = "Landisk USL-5P";
59
60 /* 200 MHz SH4 CPU clock: */
61 if (machine->emulated_hz == 0)
62 machine->emulated_hz = 200000000;
63
64 /* 50 MHz SH4 PCLOCK: */
65 machine->cpus[machine->bootstrap_cpu]->cd.sh.pclock = 50000000;
66
67 dev_ram_init(machine, 0x0c000000, 64 * 1048576, DEV_RAM_RAM, 0x0);
68
69 /* wdc0 at obio0 port 0x14000000-0x1400000f irq 10 */
70 snprintf(tmpstr, sizeof(tmpstr), "wdc irq=%s.cpu[%i].irq[0x%x]"
71 " addr_mult=2 addr=0x14000000",
72 machine->path, machine->bootstrap_cpu, SH4_INTEVT_IRQ10);
73 device_add(machine, tmpstr);
74
75 if (!machine->prom_emulation)
76 return;
77
78 /*
79 * Ugly hardcoded register contents at bootup:
80 *
81 * r4 (arg 0) = boot howto flags
82 * r5 (arg 1) = bootinfo pointer for NetBSD (?) and
83 * symbol end pointer for OpenBSD (?)
84 *
85 * TODO: Make nicer.
86 */
87 cpu->cd.sh.r[4] = 0;
88 cpu->cd.sh.r[5] = 0x8c000000 + 8 * 1048576; /* Note/TODO:
89 Assuming hardcoded 8 MB kernel size! */
90
91 sh_ipl_g_emul_init(machine);
92 }
93
94
95 MACHINE_DEFAULT_CPU(landisk)
96 {
97 /* Hitachi SH4 7751R, 200 MHz */
98 machine->cpu_name = strdup("SH7751R");
99 }
100
101
102 MACHINE_DEFAULT_RAM(landisk)
103 {
104 /* Note: This is the size of the boot ROM area, since the
105 Landisk's RAM isn't located at physical address zero. */
106 machine->physical_ram_in_mb = 2;
107 }
108
109
110 MACHINE_REGISTER(landisk)
111 {
112 MR_DEFAULT(landisk, "Landisk", ARCH_SH, MACHINE_LANDISK);
113 me->set_default_ram = machine_default_ram_landisk;
114 machine_entry_add_alias(me, "landisk");
115 }
116

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