1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1998 Dag-Erling Smørgrav
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer
12 * in this position and unchanged.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35 #include <sys/syslog.h>
36 #include <sys/consio.h>
37 #include <sys/fbio.h>
38
39 #include <dev/fb/fbreg.h>
40 #include <dev/fb/splashreg.h>
41 #include <dev/syscons/syscons.h>
42
43 #define SAVER_NAME "logo_saver"
44
45 #define SET_ORIGIN(adp, o) do { \
46 int oo = o; \
47 if (oo != last_origin) \
48 vidd_set_win_org(adp, last_origin = oo); \
49 } while (0)
50
51 extern unsigned int logo_w;
52 extern unsigned int logo_h;
53 extern unsigned char logo_pal[];
54 extern unsigned char logo_img[];
55 extern unsigned int logo_img_size;
56
57 static u_char *vid;
58 static int banksize, scrmode, bpsl, scrw, scrh;
59 static int blanked;
60
61 static void
logo_blit(video_adapter_t * adp,int x,int y)62 logo_blit(video_adapter_t *adp, int x, int y)
63 {
64 int d, l, o, p;
65 int last_origin = -1;
66
67 for (o = 0, p = y * bpsl + x; p > banksize; p -= banksize)
68 o += banksize;
69 SET_ORIGIN(adp, o);
70
71 for (d = 0; d < logo_img_size; d += logo_w) {
72 if (p + logo_w < banksize) {
73 bcopy(logo_img + d, vid + p, logo_w);
74 p += bpsl;
75 } else if (p < banksize) {
76 l = banksize - p;
77 bcopy(logo_img + d, vid + p, l);
78 SET_ORIGIN(adp, (o += banksize));
79 bcopy(logo_img + d + l, vid, logo_w - l);
80 p += bpsl - banksize;
81 } else {
82 p -= banksize;
83 SET_ORIGIN(adp, (o += banksize));
84 bcopy(logo_img + d, vid + p, logo_w);
85 p += bpsl;
86 }
87 }
88 }
89
90 static void
logo_update(video_adapter_t * adp)91 logo_update(video_adapter_t *adp)
92 {
93 static int xpos = 0, ypos = 0;
94 static int xinc = 1, yinc = 1;
95
96 /* Turn when you hit the edge */
97 if ((xpos + logo_w + xinc > scrw) || (xpos + xinc < 0))
98 xinc = -xinc;
99 if ((ypos + logo_h + yinc > scrh) || (ypos + yinc < 0))
100 yinc = -yinc;
101 xpos += xinc;
102 ypos += yinc;
103
104 /* XXX Relies on margin around logo to erase trail */
105 logo_blit(adp, xpos, ypos);
106 }
107
108 static int
logo_saver(video_adapter_t * adp,int blank)109 logo_saver(video_adapter_t *adp, int blank)
110 {
111 int pl;
112
113 if (blank) {
114 /* switch to graphics mode */
115 if (blanked <= 0) {
116 pl = splhigh();
117 vidd_set_mode(adp, scrmode);
118 vidd_load_palette(adp, logo_pal);
119 vidd_set_border(adp, 0);
120 blanked++;
121 vid = (u_char *)adp->va_window;
122 banksize = adp->va_window_size;
123 bpsl = adp->va_line_width;
124 splx(pl);
125 vidd_clear(adp);
126 }
127 logo_update(adp);
128 } else {
129 blanked = 0;
130 }
131 return (0);
132 }
133
134 static int
logo_init(video_adapter_t * adp)135 logo_init(video_adapter_t *adp)
136 {
137 video_info_t info;
138
139 if (!vidd_get_info(adp, M_VESA_CG800x600, &info)) {
140 scrmode = M_VESA_CG800x600;
141 } else if (!vidd_get_info(adp, M_VGA_CG320, &info)) {
142 scrmode = M_VGA_CG320;
143 } else {
144 log(LOG_NOTICE,
145 "%s: the console does not support M_VGA_CG320\n",
146 SAVER_NAME);
147 return (ENODEV);
148 }
149
150 scrw = info.vi_width;
151 scrh = info.vi_height;
152
153 return (0);
154 }
155
156 static int
logo_term(video_adapter_t * adp)157 logo_term(video_adapter_t *adp)
158 {
159 return (0);
160 }
161
162 static scrn_saver_t logo_module = {
163 SAVER_NAME,
164 logo_init,
165 logo_term,
166 logo_saver,
167 NULL
168 };
169
170 #ifdef BEASTIE_LOGO
171 SAVER_MODULE(beastie_saver, logo_module);
172 #else
173 SAVER_MODULE(logo_saver, logo_module);
174 #endif
175