Annotation of sys/arch/sparc64/dev/consinit.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: consinit.c,v 1.10 2005/04/26 15:16:20 miod Exp $ */
2: /* $NetBSD: consinit.c,v 1.9 2000/10/20 05:32:35 mrg Exp $ */
3:
4: /*-
5: * Copyright (c) 1999 Eduardo E. Horvath
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
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,
24: * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26: * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
31:
32: #include "pcons.h"
33: #include "ukbd.h"
34:
35: #include <sys/param.h>
36: #include <sys/systm.h>
37: #include <sys/conf.h>
38: #include <sys/device.h>
39: #include <sys/file.h>
40: #include <sys/ioctl.h>
41: #include <sys/kernel.h>
42: #include <sys/proc.h>
43: #include <sys/tty.h>
44: #include <sys/time.h>
45: #include <sys/syslog.h>
46:
47: #include <machine/autoconf.h>
48: #include <machine/openfirm.h>
49: #include <machine/bsd_openprom.h>
50: #include <machine/conf.h>
51: #include <machine/cpu.h>
52: #include <machine/eeprom.h>
53: #include <machine/psl.h>
54: #include <machine/z8530var.h>
55: #include <machine/sparc64.h>
56:
57: #include <dev/cons.h>
58:
59: #include <sparc64/dev/cons.h>
60:
61: #include <dev/usb/ukbdvar.h>
62:
63: cons_decl(prom_);
64:
65: int stdin = NULL, stdout = NULL;
66:
67: /*
68: * The console is set to this one initially,
69: * which lets us use the PROM until consinit()
70: * is called to select a real console.
71: */
72: struct consdev consdev_prom = {
73: prom_cnprobe,
74: prom_cninit,
75: prom_cngetc,
76: prom_cnputc,
77: prom_cnpollc,
78: NULL
79: };
80:
81: /*
82: * The console table pointer is statically initialized
83: * to point to the PROM (output only) table, so that
84: * early calls to printf will work.
85: */
86: struct consdev *cn_tab = &consdev_prom;
87:
88: void
89: prom_cnprobe(struct consdev *cd)
90: {
91: #if NPCONS > 0
92: int maj;
93:
94: for (maj = 0; maj < nchrdev; maj++)
95: if (cdevsw[maj].d_open == pconsopen)
96: break;
97: cd->cn_dev = makedev(maj, 0);
98: cd->cn_pri = CN_INTERNAL;
99: #endif
100: }
101:
102: int
103: prom_cngetc(dev_t dev)
104: {
105: unsigned char ch = '\0';
106: int l;
107: #ifdef DDB
108: static int nplus = 0;
109: #endif
110:
111: while ((l = OF_read(stdin, &ch, 1)) != 1)
112: /* void */;
113: #ifdef DDB
114: if (ch == '+') {
115: if (nplus++ > 3)
116: Debugger();
117: } else
118: nplus = 0;
119: #endif
120: if (ch == '\r')
121: ch = '\n';
122: if (ch == '\b')
123: ch = '\177';
124: return ch;
125: }
126:
127: void
128: prom_cninit(struct consdev *cn)
129: {
130: if (!stdin) stdin = OF_stdin();
131: if (!stdout) stdout = OF_stdout();
132: }
133:
134: /*
135: * PROM console output putchar.
136: */
137: void
138: prom_cnputc(dev_t dev, int c)
139: {
140: int s;
141: char c0 = (c & 0x7f);
142:
143: #if 0
144: if (!stdout) stdout = OF_stdout();
145: #endif
146: s = splhigh();
147: OF_write(stdout, &c0, 1);
148: splx(s);
149: }
150:
151: void
152: prom_cnpollc(dev_t dev, int on)
153: {
154: if (on) {
155: /* Entering debugger. */
156: fb_unblank();
157: } else {
158: /* Resuming kernel. */
159: }
160: #if NPCONS > 0
161: pcons_cnpollc(dev, on);
162: #endif
163: }
164:
165: /*****************************************************************/
166:
167: #ifdef DEBUG
168: #define DBPRINT(x) prom_printf x
169: #else
170: #define DBPRINT(x)
171: #endif
172:
173: /*
174: * This function replaces sys/dev/cninit.c
175: * Determine which device is the console using
176: * the PROM "input source" and "output sink".
177: */
178: void
179: consinit()
180: {
181: register int chosen;
182: char buffer[128];
183: extern int stdinnode, fbnode;
184: char *consname = "unknown";
185:
186: DBPRINT(("consinit()\r\n"));
187: if (cn_tab != &consdev_prom) return;
188:
189: DBPRINT(("setting up stdin\r\n"));
190: chosen = OF_finddevice("/chosen");
191: OF_getprop(chosen, "stdin", &stdin, sizeof(stdin));
192: DBPRINT(("stdin instance = %x\r\n", stdin));
193:
194: if ((stdinnode = OF_instance_to_package(stdin)) == 0) {
195: printf("WARNING: no PROM stdin\n");
196: }
197: #if NUKBD > 0
198: else {
199: if (OF_getprop(stdinnode, "compatible", buffer,
200: sizeof(buffer)) != -1 && strncmp("usb", buffer, 3) == 0)
201: ukbd_cnattach();
202: }
203: #endif
204:
205: DBPRINT(("setting up stdout\r\n"));
206: OF_getprop(chosen, "stdout", &stdout, sizeof(stdout));
207:
208: DBPRINT(("stdout instance = %x\r\n", stdout));
209:
210: if ((fbnode = OF_instance_to_package(stdout)) == 0)
211: printf("WARNING: no PROM stdout\n");
212:
213: DBPRINT(("stdout package = %x\r\n", fbnode));
214:
215: if (stdinnode && (OF_getproplen(stdinnode,"keyboard") >= 0)) {
216: consname = "keyboard/display";
217: } else if (fbnode &&
218: (OF_instance_to_path(stdin, buffer, sizeof(buffer)) >= 0)) {
219: consname = buffer;
220: }
221: printf("console is %s\n", consname);
222:
223: /* Initialize PROM console */
224: (*cn_tab->cn_probe)(cn_tab);
225: (*cn_tab->cn_init)(cn_tab);
226: }
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