consinit.c revision 1.3 1 1.3 lukem /* $NetBSD: consinit.c,v 1.3 2003/07/15 03:36:11 lukem Exp $ */
2 1.1 fredette
3 1.1 fredette /*-
4 1.1 fredette * Copyright (c) 2001 Matthew Fredette
5 1.1 fredette * Copyright (c) 1999 Eduardo E. Horvath
6 1.1 fredette * All rights reserved.
7 1.1 fredette *
8 1.1 fredette * Redistribution and use in source and binary forms, with or without
9 1.1 fredette * modification, are permitted provided that the following conditions
10 1.1 fredette * are met:
11 1.1 fredette * 1. Redistributions of source code must retain the above copyright
12 1.1 fredette * notice, this list of conditions and the following disclaimer.
13 1.1 fredette * 2. Redistributions in binary form must reproduce the above copyright
14 1.1 fredette * notice, this list of conditions and the following disclaimer in the
15 1.1 fredette * documentation and/or other materials provided with the distribution.
16 1.1 fredette * 3. The name of the author may not be used to endorse or promote products
17 1.1 fredette * derived from this software without specific prior written permission.
18 1.1 fredette *
19 1.1 fredette * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 1.1 fredette * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 1.1 fredette * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 1.1 fredette * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 1.1 fredette * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 1.1 fredette * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 1.1 fredette * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 1.1 fredette * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 1.1 fredette * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 1.1 fredette * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 1.1 fredette * SUCH DAMAGE.
30 1.1 fredette */
31 1.3 lukem
32 1.3 lukem #include <sys/cdefs.h>
33 1.3 lukem __KERNEL_RCSID(0, "$NetBSD: consinit.c,v 1.3 2003/07/15 03:36:11 lukem Exp $");
34 1.1 fredette
35 1.1 fredette #include "opt_ddb.h"
36 1.1 fredette #include "opt_kgdb.h"
37 1.1 fredette #include "pcons.h"
38 1.1 fredette #include "kbd.h"
39 1.1 fredette #include "zs.h"
40 1.1 fredette
41 1.1 fredette #include <sys/param.h>
42 1.1 fredette #include <sys/systm.h>
43 1.1 fredette #include <sys/conf.h>
44 1.1 fredette #include <sys/device.h>
45 1.1 fredette #include <sys/file.h>
46 1.1 fredette #include <sys/ioctl.h>
47 1.1 fredette #include <sys/kernel.h>
48 1.1 fredette #include <sys/proc.h>
49 1.1 fredette #include <sys/tty.h>
50 1.1 fredette #include <sys/time.h>
51 1.1 fredette #include <sys/syslog.h>
52 1.1 fredette #include <sys/kgdb.h>
53 1.1 fredette
54 1.1 fredette #include <machine/autoconf.h>
55 1.1 fredette #include <machine/promlib.h>
56 1.1 fredette #include <machine/cpu.h>
57 1.1 fredette #include <machine/eeprom.h>
58 1.1 fredette #include <machine/psl.h>
59 1.1 fredette #include <machine/z8530var.h>
60 1.1 fredette
61 1.1 fredette #include <dev/cons.h>
62 1.1 fredette
63 1.1 fredette #include <sun2/dev/cons.h>
64 1.1 fredette
65 1.1 fredette static void prom_cnprobe __P((struct consdev *));
66 1.1 fredette static void prom_cninit __P((struct consdev *));
67 1.1 fredette int prom_cngetc __P((dev_t));
68 1.1 fredette static void prom_cnputc __P((dev_t, int));
69 1.1 fredette static void prom_cnpollc __P((dev_t, int));
70 1.1 fredette static void prom_cnputc __P((dev_t, int));
71 1.1 fredette
72 1.1 fredette #ifdef PROM_OBP_V2
73 1.1 fredette /*
74 1.1 fredette * The following several variables are related to
75 1.1 fredette * the configuration process, and are used in initializing
76 1.1 fredette * the machine.
77 1.1 fredette */
78 1.1 fredette int prom_stdin_node; /* node ID of ROM's console input device */
79 1.1 fredette int prom_stdout_node; /* node ID of ROM's console output device */
80 1.1 fredette char prom_stdin_args[16];
81 1.1 fredette char prom_stdout_args[16];
82 1.1 fredette #endif /* PROM_OBP_V2 */
83 1.1 fredette
84 1.1 fredette /*
85 1.1 fredette * The console is set to this one initially,
86 1.1 fredette * which lets us use the PROM until consinit()
87 1.1 fredette * is called to select a real console.
88 1.1 fredette */
89 1.1 fredette struct consdev consdev_prom = {
90 1.1 fredette prom_cnprobe,
91 1.1 fredette prom_cninit,
92 1.1 fredette prom_cngetc,
93 1.1 fredette prom_cnputc,
94 1.1 fredette prom_cnpollc,
95 1.1 fredette NULL,
96 1.1 fredette };
97 1.1 fredette
98 1.1 fredette /*
99 1.1 fredette * The console table pointer is statically initialized
100 1.1 fredette * to point to the PROM (output only) table, so that
101 1.1 fredette * early calls to printf will work.
102 1.1 fredette */
103 1.1 fredette struct consdev *cn_tab = &consdev_prom;
104 1.1 fredette
105 1.1 fredette void
106 1.1 fredette prom_cnprobe(cd)
107 1.1 fredette struct consdev *cd;
108 1.1 fredette {
109 1.1 fredette #if NPCONS > 0
110 1.2 gehenna extern const struct cdevsw pcons_cdevsw;
111 1.1 fredette
112 1.2 gehenna cd->cn_dev = makedev(cdevsw_lookup_major(&pcons_cdevsw), 0);
113 1.1 fredette cd->cn_pri = CN_INTERNAL;
114 1.1 fredette #endif
115 1.1 fredette }
116 1.1 fredette
117 1.1 fredette int
118 1.1 fredette prom_cngetc(dev)
119 1.1 fredette dev_t dev;
120 1.1 fredette {
121 1.1 fredette int ch;
122 1.1 fredette #ifdef DDB
123 1.1 fredette static int nplus = 0;
124 1.1 fredette #endif
125 1.1 fredette
126 1.1 fredette ch = prom_getchar();
127 1.1 fredette #ifdef DDB
128 1.1 fredette if (ch == '+') {
129 1.1 fredette if (nplus++ > 3) Debugger();
130 1.1 fredette } else nplus = 0;
131 1.1 fredette #endif
132 1.1 fredette return ch;
133 1.1 fredette }
134 1.1 fredette
135 1.1 fredette static void
136 1.1 fredette prom_cninit(cn)
137 1.1 fredette struct consdev *cn;
138 1.1 fredette {
139 1.1 fredette }
140 1.1 fredette
141 1.1 fredette /*
142 1.1 fredette * PROM console output putchar.
143 1.1 fredette */
144 1.1 fredette static void
145 1.1 fredette prom_cnputc(dev, c)
146 1.1 fredette dev_t dev;
147 1.1 fredette int c;
148 1.1 fredette {
149 1.1 fredette int s;
150 1.1 fredette
151 1.1 fredette s = splhigh();
152 1.1 fredette prom_putchar(c);
153 1.1 fredette splx(s);
154 1.1 fredette }
155 1.1 fredette
156 1.1 fredette void
157 1.1 fredette prom_cnpollc(dev, on)
158 1.1 fredette dev_t dev;
159 1.1 fredette int on;
160 1.1 fredette {
161 1.1 fredette if (on) {
162 1.1 fredette /* Entering debugger. */
163 1.1 fredette #if NFB > 0
164 1.1 fredette fb_unblank();
165 1.1 fredette #endif
166 1.1 fredette } else {
167 1.1 fredette /* Resuming kernel. */
168 1.1 fredette }
169 1.1 fredette #if NPCONS > 0
170 1.1 fredette pcons_cnpollc(dev, on);
171 1.1 fredette #endif
172 1.1 fredette }
173 1.1 fredette
174 1.1 fredette /*****************************************************************/
175 1.1 fredette
176 1.1 fredette #ifdef DEBUG
177 1.1 fredette #define DBPRINT(x) prom_printf x
178 1.1 fredette #else
179 1.1 fredette #define DBPRINT(x)
180 1.1 fredette #endif
181 1.1 fredette
182 1.1 fredette #ifdef notyet /* PROM_OBP_V2 */
183 1.1 fredette void
184 1.1 fredette prom_get_device_args(prop, dev, dev_sz, args, args_sz)
185 1.1 fredette const char *prop;
186 1.1 fredette char *dev;
187 1.1 fredette unsigned int dev_sz;
188 1.1 fredette char *args;
189 1.1 fredette unsigned int args_sz;
190 1.1 fredette {
191 1.1 fredette char *cp, buffer[128];
192 1.1 fredette
193 1.1 fredette getpropstringA(prom_findroot(), (char *)prop, buffer, sizeof buffer);
194 1.1 fredette
195 1.1 fredette /*
196 1.1 fredette * Extract device-specific arguments from a PROM device path (if any)
197 1.1 fredette */
198 1.1 fredette cp = buffer + strlen(buffer);
199 1.1 fredette while (cp >= buffer) {
200 1.1 fredette if (*cp == ':') {
201 1.1 fredette strncpy(args, cp+1, args_sz);
202 1.1 fredette *cp = '\0';
203 1.1 fredette strncpy(dev, buffer, dev_sz);
204 1.1 fredette break;
205 1.1 fredette }
206 1.1 fredette cp--;
207 1.1 fredette }
208 1.1 fredette }
209 1.1 fredette #endif /* PROM_OBP_V2 */
210 1.1 fredette
211 1.1 fredette /*
212 1.1 fredette * This function replaces sys/dev/cninit.c
213 1.1 fredette * Determine which device is the console using
214 1.1 fredette * the PROM "input source" and "output sink".
215 1.1 fredette */
216 1.1 fredette void
217 1.1 fredette consinit()
218 1.1 fredette {
219 1.1 fredette #ifdef notyet /* PROM_OBP_V2 */
220 1.1 fredette char buffer[128];
221 1.1 fredette #endif /* PROM_OBP_V2 */
222 1.1 fredette char *consname = "unknown";
223 1.2 gehenna #if KGDB
224 1.2 gehenna #if NZS > 0
225 1.2 gehenna extern const struct cdevsw zstty_cdevsw;
226 1.2 gehenna #endif
227 1.2 gehenna #endif
228 1.1 fredette
229 1.1 fredette DBPRINT(("consinit()\r\n"));
230 1.1 fredette if (cn_tab != &consdev_prom) return;
231 1.1 fredette
232 1.1 fredette switch(prom_version()) {
233 1.1 fredette #ifdef PROM_OLDMON
234 1.1 fredette case PROM_OLDMON:
235 1.1 fredette case PROM_OBP_V0:
236 1.1 fredette switch(prom_stdin()) {
237 1.1 fredette case PROMDEV_KBD:
238 1.1 fredette consname = "keyboard/display";
239 1.1 fredette break;
240 1.1 fredette case PROMDEV_TTYA:
241 1.1 fredette consname = "ttya";
242 1.1 fredette break;
243 1.1 fredette case PROMDEV_TTYB:
244 1.1 fredette consname = "ttyb";
245 1.1 fredette break;
246 1.1 fredette }
247 1.1 fredette break;
248 1.1 fredette #endif /* PROM_OLDMON */
249 1.1 fredette
250 1.1 fredette #ifdef notyet /* PROM_OBP_V2 */
251 1.1 fredette case PROM_OBP_V2:
252 1.1 fredette case PROM_OBP_V3:
253 1.1 fredette case PROM_OPENFIRM:
254 1.1 fredette
255 1.1 fredette /* Save PROM arguments for device matching */
256 1.1 fredette prom_get_device_args("stdin-path",
257 1.1 fredette buffer,
258 1.1 fredette sizeof(buffer),
259 1.1 fredette prom_stdin_args,
260 1.1 fredette sizeof(prom_stdin_args));
261 1.1 fredette prom_get_device_args("stdout-path",
262 1.1 fredette buffer,
263 1.1 fredette sizeof(buffer),
264 1.1 fredette prom_stdout_args,
265 1.1 fredette sizeof(prom_stdout_args));
266 1.1 fredette
267 1.1 fredette /*
268 1.1 fredette * Translate the STDIO package instance (`ihandle') -- that
269 1.1 fredette * the PROM has already opened for us -- to a device tree
270 1.1 fredette * node (i.e. a `phandle').
271 1.1 fredette */
272 1.1 fredette DBPRINT(("stdin instance = %x\r\n", prom_stdin()));
273 1.1 fredette if ((prom_stdin_node = prom_instance_to_package(prom_stdin())) == 0) {
274 1.1 fredette printf("WARNING: no PROM stdin\n");
275 1.1 fredette }
276 1.1 fredette DBPRINT(("stdin package = %x\r\n", prom_stdin_node));
277 1.1 fredette
278 1.1 fredette DBPRINT(("stdout instance = %x\r\n", prom_stdout()));
279 1.1 fredette if ((prom_stdout_node = prom_instance_to_package(prom_stdout())) == 0) {
280 1.1 fredette printf("WARNING: no PROM stdout\n");
281 1.1 fredette }
282 1.1 fredette DBPRINT(("stdout package = %x\r\n", prom_stdout_node));
283 1.1 fredette DBPRINT(("buffer @ %p\r\n", buffer));
284 1.1 fredette
285 1.1 fredette if (prom_stdin_node && prom_node_has_property(prom_stdin_node, "keyboard") {
286 1.1 fredette #if NKBD == 0
287 1.1 fredette printf("cninit: kdb/display not configured\n");
288 1.1 fredette #endif
289 1.1 fredette consname = "keyboard/display";
290 1.1 fredette } else if (prom_stdout_node)
291 1.1 fredette consname = buffer;
292 1.1 fredette #endif /* PROM_OBP_V2 */
293 1.1 fredette }
294 1.1 fredette printf("console is %s\n", consname);
295 1.1 fredette
296 1.1 fredette /* Initialize PROM console */
297 1.1 fredette (*cn_tab->cn_probe)(cn_tab);
298 1.1 fredette (*cn_tab->cn_init)(cn_tab);
299 1.1 fredette
300 1.1 fredette #ifdef KGDB
301 1.1 fredette /* Set up KGDB */
302 1.1 fredette #if NZS > 0
303 1.2 gehenna if (cdevsw_lookup(kgdb_dev) == &zstty_cdevsw)
304 1.1 fredette zs_kgdb_init();
305 1.1 fredette #endif /* NZS > 0 */
306 1.1 fredette #endif /* KGDB */
307 1.1 fredette }
308 1.1 fredette
309