1 /*-
2 * Copyright (c) 2009 TAKAHASHI Yoshihiro <nyan@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
30
31 #include <btxv86.h>
32 #include <machine/cpufunc.h>
33 #define _KERNEL
34 #include <pc98/pc98/pc98_machdep.h>
35
36 /*
37 * Set machine type to PC98_SYSTEM_PARAMETER.
38 */
39 void
set_machine_type(void)40 set_machine_type(void)
41 {
42 int i;
43 u_long ret, data;
44
45 /* PC98_SYSTEM_PARAMETER (0x501) */
46 ret = ((*(u_char *)PTOV(0xA1501)) & 0x08) >> 3;
47
48 /* Wait V-SYNC */
49 while (inb(0x60) & 0x20) {}
50 while (!(inb(0x60) & 0x20)) {}
51
52 /* ANK 'A' font */
53 outb(0xa1, 0x00);
54 outb(0xa3, 0x41);
55
56 /* M_NORMAL, use CG window (all NEC OK) */
57 for (i = data = 0; i < 4; i++)
58 data += *((u_long *)PTOV(0xA4000) + i); /* 0xa4000 */
59 if (data == 0x6efc58fc) /* DA data */
60 ret |= M_NEC_PC98;
61 else
62 ret |= M_EPSON_PC98;
63 ret |= (inb(0x42) & 0x20) ? M_8M : 0;
64
65 /* PC98_SYSTEM_PARAMETER(0x400) */
66 if ((*(u_char *)PTOV(0xA1400)) & 0x80)
67 ret |= M_NOTE;
68 if (ret & M_NEC_PC98) {
69 /* PC98_SYSTEM_PARAMETER(0x458) */
70 if ((*(u_char *)PTOV(0xA1458)) & 0x80)
71 ret |= M_H98;
72 else
73 ret |= M_NOT_H98;
74 } else
75 ret |= M_NOT_H98;
76
77 (*(u_long *)PTOV(0xA1620)) = ret;
78 }
79