/* * (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 <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", "" );