blob: fd3dd4851480969f968b190d6e00b2e4df304cc4 [file] [log] [blame]
Harald Welted16471e2007-12-19 14:14:47 +01001/*
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>
Jean-Christophe PLAGNIOL-VILLARDc1de7a62008-08-31 04:24:55 +020030#include <serial.h>
Harald Welted16471e2007-12-19 14:14:47 +010031
Harald Welted16471e2007-12-19 14:14:47 +010032int do_terminal(cmd_tbl_t * cmd, int flag, int argc, char *argv[])
33{
Harald Welted16471e2007-12-19 14:14:47 +010034 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 */
Jean-Christophe PLAGNIOL-VILLARDc1de7a62008-08-31 04:24:55 +020041 dev = device_get_by_name(argv[1]);
Harald Welted16471e2007-12-19 14:14:47 +010042 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,
Peter Tyser2fb26042009-01-27 18:03:12 -060090 "start terminal emulator",
Harald Welted16471e2007-12-19 14:14:47 +010091 ""
92);