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
|
/* SPDX-License-Identifier: BSD-2-Clause */
/* This file contains the TTY driver for the serial ports. The driver
* is layered so that different UART hardware can be used. It is implemented
* using the Driver Manager.
*
* This driver uses the termios pseudo driver.
*
* COPYRIGHT (c) 2010.
* Cobham Gaisler AB.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <bsp.h>
#include <string.h>
#include <unistd.h>
#include <grlib/cons.h>
#include <rtems/console.h>
#ifdef RTEMS_DRVMGR_STARTUP
/* Note that it is not possible to use the interrupt mode of the driver
* together with the "old" APBUART and -u to GRMON. However the new
* APBUART core (from 1.0.17-b2710) has the GRMON debug bit and can
* handle interrupts.
*/
static int console_initialized = 0;
#define FLAG_SYSCON 0x01
struct console_priv {
int flags; /* 0x1=SystemConsole */
int minor;
struct console_dev *dev;
};
#define CONSOLE_MAX BSP_NUMBER_OF_TERMIOS_PORTS
struct console_priv cons[CONSOLE_MAX] = {{0,0},};
/* Install Console in TERMIOS layer */
static void console_dev_init(struct console_priv *con)
{
char name[16], *fsname;
rtems_status_code status;
int minor;
minor = con->minor;
if (!con->dev->fsname) {
strcpy(name, "/dev/console_a");
/* Special console name and MINOR for SYSTEM CONSOLE */
if (minor == 0)
name[12] = '\0'; /* /dev/console */
name[13] += minor; /* when minor=0, this has no effect... */
fsname = name;
} else {
fsname = con->dev->fsname;
}
status = rtems_termios_device_install(
fsname,
con->dev->handler,
NULL,
&con->dev->base
);
if (status != RTEMS_SUCCESSFUL) {
rtems_fatal_error_occurred(status);
}
if ((con->flags & FLAG_SYSCON) != 0) {
(void) link(fsname, CONSOLE_DEVICE_NAME);
}
}
/* Called by device driver to register itself to the cons interface. */
void console_dev_register(struct console_dev *dev)
{
int i, minor = 0;
struct console_priv *con = NULL;
if ((dev->flags & CONSOLE_FLAG_SYSCON) && !cons[0].dev) {
con = &cons[0];
con->flags = FLAG_SYSCON;
} else {
for (i=1; i<CONSOLE_MAX; i++) {
if (!cons[i].dev) {
con = &cons[i];
con->flags = 0;
minor = i;
break;
}
}
}
if (con == NULL) {
/* Not enough console structures */
return;
}
dev->flags &= ~CONSOLE_FLAG_SYSCON_GRANT;
if (con->flags & FLAG_SYSCON) {
dev->flags |= CONSOLE_FLAG_SYSCON_GRANT;
}
/* Assign Console */
con->dev = dev;
con->minor = minor;
if (console_initialized) {
/* Console layer is already initialized, that means that we can
* register termios interface directly.
*/
console_dev_init(con);
}
}
#if 0
void console_dev_unregister(struct console_dev *dev)
{
}
#endif
rtems_device_driver console_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg)
{
int i;
rtems_termios_initialize();
/* Register all Console a file system device node */
for (i=0; i<CONSOLE_MAX; i++) {
if (cons[i].dev)
console_dev_init(&cons[i]);
}
console_initialized = 1;
return RTEMS_SUCCESSFUL;
}
#endif
|
