1 /* $NetBSD: consinit.c,v 1.28 2015/03/02 14:17:06 nakayama Exp $ */
2
3 /*-
4 * Copyright (c) 1999 Eduardo E. Horvath
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 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31 #include <sys/cdefs.h>
32 __KERNEL_RCSID(0, "$NetBSD: consinit.c,v 1.28 2015/03/02 14:17:06 nakayama Exp $");
33
34 #include "opt_ddb.h"
35 #include "pcons.h"
36 #include "ukbd.h"
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/conf.h>
41 #include <sys/device.h>
42 #include <sys/file.h>
43 #include <sys/ioctl.h>
44 #include <sys/kernel.h>
45 #include <sys/proc.h>
46 #include <sys/tty.h>
47 #include <sys/time.h>
48 #include <sys/syslog.h>
49
50 #include <machine/autoconf.h>
51 #include <machine/openfirm.h>
52 #include <machine/bsd_openprom.h>
53 #include <machine/cpu.h>
54 #include <machine/eeprom.h>
55 #include <machine/psl.h>
56 #include <machine/z8530var.h>
57 #include <machine/sparc64.h>
58
59 #include <dev/cons.h>
60
61 #include <sparc64/dev/cons.h>
62
63 #include <dev/usb/ukbdvar.h>
64
65 static void prom_cnprobe(struct consdev *);
66 static void prom_cninit(struct consdev *);
67 int prom_cngetc(dev_t);
68 static void prom_cnputc(dev_t, int);
69 static void prom_cnpollc(dev_t, int);
70
71 /*
72 * The console is set to this one initially,
73 * which lets us use the PROM until consinit()
74 * is called to select a real console.
75 */
76 struct consdev consdev_prom = {
77 .cn_probe = prom_cnprobe,
78 .cn_init = prom_cninit,
79 .cn_getc = prom_cngetc,
80 .cn_putc = prom_cnputc,
81 .cn_pollc = prom_cnpollc,
82 };
83
84 void
prom_cnprobe(struct consdev * cd)85 prom_cnprobe(struct consdev *cd)
86 {
87 #if NPCONS > 0
88 int maj;
89 extern const struct cdevsw pcons_cdevsw;
90
91 maj = cdevsw_lookup_major(&pcons_cdevsw);
92 cd->cn_dev = makedev(maj, 0);
93 cd->cn_pri = CN_INTERNAL;
94 #endif
95 }
96
97 int
prom_cngetc(dev_t dev)98 prom_cngetc(dev_t dev)
99 {
100 unsigned char ch = '\0';
101 int l;
102 #ifdef DDB
103 static int nplus = 0;
104 #endif
105
106 while ((l = prom_read(prom_stdin(), &ch, 1)) != 1)
107 /* void */;
108 #ifdef DDB
109 if (ch == '+') {
110 if (nplus++ > 3) Debugger();
111 } else nplus = 0;
112 #endif
113 if (ch == '\r')
114 ch = '\n';
115 return ch;
116 }
117
118 static void
prom_cninit(struct consdev * cn)119 prom_cninit(struct consdev *cn)
120 {
121 }
122
123 /*
124 * PROM console output putchar.
125 */
126 static void
prom_cnputc(dev_t dev,int c)127 prom_cnputc(dev_t dev, int c)
128 {
129 int s;
130 char c0 = (c & 0x7f);
131
132 s = splhigh();
133 prom_write(prom_stdout(), &c0, 1);
134 splx(s);
135 }
136
137 void
prom_cnpollc(dev_t dev,int on)138 prom_cnpollc(dev_t dev, int on)
139 {
140 if (on) {
141 /* Entering debugger. */
142 #if NFB > 0
143 fb_unblank();
144 #endif
145 } else {
146 /* Resuming kernel. */
147 }
148 #if NPCONS > 0
149 pcons_cnpollc(dev, on);
150 #endif
151 }
152
153 /*****************************************************************/
154
155 #ifdef DEBUG
156 #define DBPRINT(x) prom_printf x
157 #else
158 #define DBPRINT(x)
159 #endif
160
161 int prom_stdin_node;
162 int prom_stdout_node;
163
164 /*
165 * This function replaces sys/dev/cninit.c
166 * Determine which device is the console using
167 * the PROM "input source" and "output sink".
168 */
169 void
consinit(void)170 consinit(void)
171 {
172 char buffer[128];
173 const char *consname = "unknown";
174
175 DBPRINT(("consinit()\n"));
176
177 if (cn_tab != &consdev_prom)
178 return;
179
180 if ((prom_stdin_node = prom_instance_to_package(prom_stdin())) == 0) {
181 printf("WARNING: no PROM stdin\n");
182 }
183 DBPRINT(("stdin node = %x\n", prom_stdin_node));
184
185 if ((prom_stdout_node = prom_instance_to_package(prom_stdout())) == 0)
186 printf("WARNING: no PROM stdout\n");
187 DBPRINT(("stdout package = %x\n", prom_stdout_node));
188
189 DBPRINT(("buffer @ %p\n", buffer));
190
191 if (prom_stdin_node != 0 &&
192 (prom_getproplen(prom_stdin_node, "keyboard") >= 0)) {
193 #if NUKBD > 0
194 if ((OF_instance_to_path(prom_stdin(), buffer, sizeof(buffer)) >= 0) &&
195 (strstr(buffer, "/usb@") != NULL)) {
196 /*
197 * If we have a USB keyboard, it will show up as (e.g.)
198 * /pci@1f,0/usb@c,3/keyboard@1 (Blade 100)
199 */
200 consname = "usb-keyboard/display";
201 ukbd_cnattach();
202 } else
203 #endif
204 consname = "sun-keyboard/display";
205 } else if (prom_stdin_node != 0 &&
206 (OF_instance_to_path(prom_stdin(), buffer, sizeof(buffer)) >= 0)) {
207 consname = buffer;
208 }
209 DBPRINT(("console is %s\n", consname));
210 #ifndef DEBUG
211 (void)consname;
212 #endif
213
214 /* Initialize PROM console */
215 (*cn_tab->cn_probe)(cn_tab);
216 (*cn_tab->cn_init)(cn_tab);
217 }
218