aboutsummaryrefslogtreecommitdiff
path: root/common/stdio.c
blob: 5e58dbe44bc272a7a0acbfb0c3dd7ee838c76c24 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
/*
 * (C) Copyright 2000
 * Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <config.h>
#include <common.h>
#include <stdarg.h>
#include <malloc.h>
#include <stdio_dev.h>
#include <serial.h>
#ifdef CONFIG_LOGBUFFER
#include <logbuff.h>
#endif
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
#include <i2c.h>
#endif

DECLARE_GLOBAL_DATA_PTR;

static struct stdio_dev devs;
struct stdio_dev *stdio_devices[] = { NULL, NULL, NULL };
char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };

#if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV)
#define	CONFIG_SYS_DEVICE_NULLDEV	1
#endif


#ifdef CONFIG_SYS_DEVICE_NULLDEV
void nulldev_putc(const char c)
{
	/* nulldev is empty! */
}

void nulldev_puts(const char *s)
{
	/* nulldev is empty! */
}

int nulldev_input(void)
{
	/* nulldev is empty! */
	return 0;
}
#endif

/**************************************************************************
 * SYSTEM DRIVERS
 **************************************************************************
 */

static void drv_system_init (void)
{
	struct stdio_dev dev;

	memset (&dev, 0, sizeof (dev));

	strcpy (dev.name, "serial");
	dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
	dev.putc = serial_buffered_putc;
	dev.puts = serial_buffered_puts;
	dev.getc = serial_buffered_getc;
	dev.tstc = serial_buffered_tstc;
#else
	dev.putc = serial_putc;
	dev.puts = serial_puts;
	dev.getc = serial_getc;
	dev.tstc = serial_tstc;
#endif

	stdio_register (&dev);

#ifdef CONFIG_SYS_DEVICE_NULLDEV
	memset (&dev, 0, sizeof (dev));

	strcpy (dev.name, "nulldev");
	dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
	dev.putc = nulldev_putc;
	dev.puts = nulldev_puts;
	dev.getc = nulldev_input;
	dev.tstc = nulldev_input;

	stdio_register (&dev);
#endif
}

/**************************************************************************
 * DEVICES
 **************************************************************************
 */
struct list_head* stdio_get_list(void)
{
	return &(devs.list);
}

struct stdio_dev* stdio_get_by_name(char* name)
{
	struct list_head *pos;
	struct stdio_dev *dev;

	if(!name)
		return NULL;

	list_for_each(pos, &(devs.list)) {
		dev = list_entry(pos, struct stdio_dev, list);
		if(strcmp(dev->name, name) == 0)
			return dev;
	}

	return NULL;
}

struct stdio_dev* stdio_clone(struct stdio_dev *dev)
{
	struct stdio_dev *_dev;

	if(!dev)
		return NULL;

	_dev = calloc(1, sizeof(struct stdio_dev));

	if(!_dev)
		return NULL;

	memcpy(_dev, dev, sizeof(struct stdio_dev));
	strncpy(_dev->name, dev->name, 16);

	return _dev;
}

int stdio_register (struct stdio_dev * dev)
{
	struct stdio_dev *_dev;

	_dev = stdio_clone(dev);
	if(!_dev)
		return -1;
	list_add_tail(&(_dev->list), &(devs.list));
	return 0;
}

/* deregister the device "devname".
 * returns 0 if success, -1 if device is assigned and 1 if devname not found
 */
#ifdef	CONFIG_SYS_STDIO_DEREGISTER
int stdio_deregister(char *devname)
{
	int l;
	struct list_head *pos;
	struct stdio_dev *dev;
	char temp_names[3][8];

	dev = stdio_get_by_name(devname);

	if(!dev) /* device not found */
		return -1;
	/* get stdio devices (ListRemoveItem changes the dev list) */
	for (l=0 ; l< MAX_FILES; l++) {
		if (stdio_devices[l] == dev) {
			/* Device is assigned -> report error */
			return -1;
		}
		memcpy (&temp_names[l][0],
			stdio_devices[l]->name,
			sizeof(stdio_devices[l]->name));
	}

	list_del(&(dev->list));

	/* reassign Device list */
	list_for_each(pos, &(devs.list)) {
		dev = list_entry(pos, struct stdio_dev, list);
		for (l=0 ; l< MAX_FILES; l++) {
			if(strcmp(dev->name, temp_names[l]) == 0)
				stdio_devices[l] = dev;
		}
	}
	return 0;
}
#endif	/* CONFIG_SYS_STDIO_DEREGISTER */

int stdio_init (void)
{
#if !defined(CONFIG_ARM) && !defined(CONFIG_RELOC_FIXUP_WORKS)
	/* already relocated for current ARM implementation */
	ulong relocation_offset = gd->reloc_off;
	int i;

	/* relocate device name pointers */
	for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
		stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
						relocation_offset);
	}
#endif /* !ARM && !CONFIG_RELOC_FIXUP_WORKS */

	/* Initialize the list */
	INIT_LIST_HEAD(&(devs.list));

#ifdef CONFIG_ARM_DCC_MULTI
	drv_arm_dcc_init ();
#endif
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
	i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
#ifdef CONFIG_LCD
	drv_lcd_init ();
#endif
#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
	drv_video_init ();
#endif
#ifdef CONFIG_KEYBOARD
	drv_keyboard_init ();
#endif
#ifdef CONFIG_LOGBUFFER
	drv_logbuff_init ();
#endif
	drv_system_init ();
#ifdef CONFIG_SERIAL_MULTI
	serial_stdio_init ();
#endif
#ifdef CONFIG_USB_TTY
	drv_usbtty_init ();
#endif
#ifdef CONFIG_NETCONSOLE
	drv_nc_init ();
#endif
#ifdef CONFIG_JTAG_CONSOLE
	drv_jtag_console_init ();
#endif

	return (0);
}