source: SVN/rincon/u-boot/common/cmd_terminal.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 2 years ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 2.1 KB
Line 
1/*
2 * (C) Copyright 2007 OpenMoko, Inc.
3 * Written by Harald Welte <laforge@openmoko.org>
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21 * MA 02111-1307 USA
22 */
23
24/*
25 * Boot support
26 */
27#include <common.h>
28#include <command.h>
29#include <devices.h>
30#include <serial.h>
31
32int do_terminal(cmd_tbl_t * cmd, int flag, int argc, char *argv[])
33{
34        int last_tilde = 0;
35        device_t *dev = NULL;
36
37        if (argc < 1)
38                return -1;
39
40        /* Scan for selected output/input device */
41        dev = device_get_by_name(argv[1]);
42        if (!dev)
43                return -1;
44
45        serial_reinit_all();
46        printf("Entering terminal mode for port %s\n", dev->name);
47        puts("Use '~.' to leave the terminal and get back to u-boot\n");
48
49        while (1) {
50                int c;
51
52                /* read from console and display on serial port */
53                if (stdio_devices[0]->tstc()) {
54                        c = stdio_devices[0]->getc();
55                        if (last_tilde == 1) {
56                                if (c == '.') {
57                                        putc(c);
58                                        putc('\n');
59                                        break;
60                                } else {
61                                        last_tilde = 0;
62                                        /* write the delayed tilde */
63                                        dev->putc('~');
64                                        /* fall-through to print current
65                                         * character */
66                                }
67                        }
68                        if (c == '~') {
69                                last_tilde = 1;
70                                puts("[u-boot]");
71                                putc(c);
72                        }
73                        dev->putc(c);
74                }
75
76                /* read from serial port and display on console */
77                if (dev->tstc()) {
78                        c = dev->getc();
79                        putc(c);
80                }
81        }
82        return 0;
83}
84
85
86/***************************************************/
87
88U_BOOT_CMD(
89        terminal,       3,      1,      do_terminal,
90        "terminal - start terminal emulator\n",
91        ""
92);
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