1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+
22e192b24SSimon Glass /*
32e192b24SSimon Glass * (C) Copyright 2007 OpenMoko, Inc.
42e192b24SSimon Glass * Written by Harald Welte <laforge@openmoko.org>
52e192b24SSimon Glass */
62e192b24SSimon Glass
72e192b24SSimon Glass /*
82e192b24SSimon Glass * Boot support
92e192b24SSimon Glass */
102e192b24SSimon Glass #include <common.h>
112e192b24SSimon Glass #include <command.h>
122e192b24SSimon Glass #include <stdio_dev.h>
132e192b24SSimon Glass #include <serial.h>
142e192b24SSimon Glass
do_terminal(cmd_tbl_t * cmd,int flag,int argc,char * const argv[])152e192b24SSimon Glass int do_terminal(cmd_tbl_t * cmd, int flag, int argc, char * const argv[])
162e192b24SSimon Glass {
172e192b24SSimon Glass int last_tilde = 0;
182e192b24SSimon Glass struct stdio_dev *dev = NULL;
192e192b24SSimon Glass
202e192b24SSimon Glass if (argc < 1)
212e192b24SSimon Glass return -1;
222e192b24SSimon Glass
232e192b24SSimon Glass /* Scan for selected output/input device */
242e192b24SSimon Glass dev = stdio_get_by_name(argv[1]);
252e192b24SSimon Glass if (!dev)
262e192b24SSimon Glass return -1;
272e192b24SSimon Glass
282e192b24SSimon Glass serial_reinit_all();
292e192b24SSimon Glass printf("Entering terminal mode for port %s\n", dev->name);
302e192b24SSimon Glass puts("Use '~.' to leave the terminal and get back to u-boot\n");
312e192b24SSimon Glass
322e192b24SSimon Glass while (1) {
332e192b24SSimon Glass int c;
342e192b24SSimon Glass
352e192b24SSimon Glass /* read from console and display on serial port */
362e192b24SSimon Glass if (stdio_devices[0]->tstc()) {
372e192b24SSimon Glass c = stdio_devices[0]->getc();
382e192b24SSimon Glass if (last_tilde == 1) {
392e192b24SSimon Glass if (c == '.') {
402e192b24SSimon Glass putc(c);
412e192b24SSimon Glass putc('\n');
422e192b24SSimon Glass break;
432e192b24SSimon Glass } else {
442e192b24SSimon Glass last_tilde = 0;
452e192b24SSimon Glass /* write the delayed tilde */
462e192b24SSimon Glass dev->putc('~');
472e192b24SSimon Glass /* fall-through to print current
482e192b24SSimon Glass * character */
492e192b24SSimon Glass }
502e192b24SSimon Glass }
512e192b24SSimon Glass if (c == '~') {
522e192b24SSimon Glass last_tilde = 1;
532e192b24SSimon Glass puts("[u-boot]");
542e192b24SSimon Glass putc(c);
552e192b24SSimon Glass }
562e192b24SSimon Glass dev->putc(c);
572e192b24SSimon Glass }
582e192b24SSimon Glass
592e192b24SSimon Glass /* read from serial port and display on console */
602e192b24SSimon Glass if (dev->tstc()) {
612e192b24SSimon Glass c = dev->getc();
622e192b24SSimon Glass putc(c);
632e192b24SSimon Glass }
642e192b24SSimon Glass }
652e192b24SSimon Glass return 0;
662e192b24SSimon Glass }
672e192b24SSimon Glass
682e192b24SSimon Glass
692e192b24SSimon Glass /***************************************************/
702e192b24SSimon Glass
712e192b24SSimon Glass U_BOOT_CMD(
722e192b24SSimon Glass terminal, 3, 1, do_terminal,
732e192b24SSimon Glass "start terminal emulator",
742e192b24SSimon Glass ""
752e192b24SSimon Glass );
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