mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-16 17:58:23 +00:00
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
/*
|
|
* (C) Copyright 2007 OpenMoko, Inc.
|
|
* Written by Harald Welte <laforge@openmoko.org>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* Boot support
|
|
*/
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <devices.h>
|
|
#include <serial.h>
|
|
|
|
int do_terminal(cmd_tbl_t * cmd, int flag, int argc, char *argv[])
|
|
{
|
|
int last_tilde = 0;
|
|
device_t *dev = NULL;
|
|
|
|
if (argc < 1)
|
|
return -1;
|
|
|
|
/* Scan for selected output/input device */
|
|
dev = device_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,
|
|
"terminal - start terminal emulator\n",
|
|
""
|
|
);
|