/[gxemul]/trunk/src/machines/machine_landisk.c
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Annotation of /trunk/src/machines/machine_landisk.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: 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 dpavlin 34 /*
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 dpavlin 36 * $Id: machine_landisk.c,v 1.7 2007/03/08 10:01:50 debug Exp $
29 dpavlin 34 *
30 dpavlin 36 * 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 dpavlin 34 */
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 dpavlin 36 #include "sh4_exception.h"
52 dpavlin 34
53 dpavlin 36
54 dpavlin 34 MACHINE_SETUP(landisk)
55     {
56 dpavlin 36 char tmpstr[300];
57 dpavlin 34
58 dpavlin 36 machine->machine_name = "Landisk USL-5P";
59    
60     /* 200 MHz SH4 CPU clock: */
61 dpavlin 34 if (machine->emulated_hz == 0)
62     machine->emulated_hz = 200000000;
63    
64     /* 50 MHz SH4 PCLOCK: */
65 dpavlin 36 machine->cpus[machine->bootstrap_cpu]->cd.sh.pclock = 50000000;
66 dpavlin 34
67     dev_ram_init(machine, 0x0c000000, 64 * 1048576, DEV_RAM_RAM, 0x0);
68    
69 dpavlin 36 /* 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 dpavlin 34
75     if (!machine->prom_emulation)
76     return;
77    
78 dpavlin 36 /*
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 dpavlin 34 }
93    
94    
95     MACHINE_DEFAULT_CPU(landisk)
96     {
97 dpavlin 36 /* Hitachi SH4 7751R, 200 MHz */
98     machine->cpu_name = strdup("SH7751R");
99 dpavlin 34 }
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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