blob: 4b9c0b34dec2e3956d800f373e98e1d389d71a06 (
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
|
/*
* (C) Copyright 2007 OpenMoko, Inc.
* Written by Harald Welte <laforge@openmoko.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* Boot support
*/
#include <common.h>
#include <command.h>
#include <stdio_dev.h>
#include <serial.h>
int do_terminal(cmd_tbl_t * cmd, int flag, int argc, char * const argv[])
{
int last_tilde = 0;
struct stdio_dev *dev = NULL;
if (argc < 1)
return -1;
/* Scan for selected output/input device */
dev = stdio_get_by_name(argv[1]);
if (!dev)
return -1;
serial_reinit_all();
printf("Entering terminal mode for port %s\n", dev->name);
puts("Use '~.' to leave the terminal and get back to u-boot\n");
while (1) {
int c;
/* read from console and display on serial port */
if (stdio_devices[0]->tstc()) {
c = stdio_devices[0]->getc();
if (last_tilde == 1) {
if (c == '.') {
putc(c);
putc('\n');
break;
} else {
last_tilde = 0;
/* write the delayed tilde */
dev->putc('~');
/* fall-through to print current
* character */
}
}
if (c == '~') {
last_tilde = 1;
puts("[u-boot]");
putc(c);
}
dev->putc(c);
}
/* read from serial port and display on console */
if (dev->tstc()) {
c = dev->getc();
putc(c);
}
}
return 0;
}
/***************************************************/
U_BOOT_CMD(
terminal, 3, 1, do_terminal,
"start terminal emulator",
""
);
|