common/cmd_terminal.c

   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
  32 #if defined(CONFIG_CMD_TERMINAL)
  33
  34 static void init_serial_by_name(char *name)
  35 {
  36         struct serial_device *ser;
  37         for (ser = serial_devices; ser; ser = ser->next) {
  38                 if (!strcmp(ser->name, name)) {
  39                         ser->init();
  40                         return;
  41                 }
  42         }
  43 }
  44
  45 int do_terminal(cmd_tbl_t * cmd, int flag, int argc, char *argv[])
  46 {
  47         int i, l;
  48         int last_tilde = 0;
  49         device_t *dev = NULL;
  50
  51         if (argc < 1)
  52                 return -1;
  53
  54         /* Scan for selected output/input device */
  55         for (i = 1; i <= ListNumItems (devlist); i++) {
  56                 device_t *tmp = ListGetPtrToItem (devlist, i);
  57                 if (!strcmp(tmp->name, argv[1])) {
  58                         dev = tmp;
  59                         break;
  60                 }
  61         }
  62         if (!dev)
  63                 return -1;
  64
  65 #if defined(CONFIG_ARCH_GTA01_v3) || defined(CONFIG_ARCH_GTA01_v4) || \
  66     defined(CONFIG_ARCH_GTA01B_v2) || defined(CONFIG_ARCH_GTA01B_v3) || \
  67     defined(CONFIG_ARCH_GTA01B_v4)
  68         if (!strcmp(dev->name, "serial") ||
  69             !strcmp(dev->name, "s3ser0"))
  70                 neo1973_gta01_serial0_gsm(1);
  71 #endif
  72
  73         init_serial_by_name(dev->name);
  74         //serial_reinit_all();
  75         printf("Entering terminal mode for port %s\n", dev->name);
  76         puts("Use '~.' to leave the terminal and get back to u-boot\n");
  77
  78         while (1) {
  79                 int c;
  80
  81                 /* read from console and display on serial port */
  82                 if (stdio_devices[0]->tstc()) {
  83                         c = stdio_devices[0]->getc();
  84                         if (last_tilde == 1) {
  85                                 if (c == '.') {
  86                                         putc(c);
  87                                         putc('\n');
  88                                         break;
  89                                 } else {
  90                                         last_tilde = 0;
  91                                         /* write the delayed tilde */
  92                                         dev->putc('~');
  93                                         /* fall-through to print current
  94                                          * character */
  95                                 }
  96                         }
  97                         if (c == '~') {
  98                                 last_tilde = 1;
  99                                 puts("[u-boot]");
 100                                 putc(c);
 101                         }
 102                         dev->putc(c);
 103                 }
 104
 105                 /* read from serial port and display on console */
 106                 if (dev->tstc()) {
 107                         c = dev->getc();
 108                         putc(c);
 109                 }
 110         }
 111 #if defined(CONFIG_ARCH_GTA01_v3) || defined(CONFIG_ARCH_GTA01_v4) || \
 112     defined(CONFIG_ARCH_GTA01B_v2) || defined(CONFIG_ARCH_GTA01B_v3) || \
 113     defined(CONFIG_ARCH_GTA01B_v4)
 114         if (!strcmp(dev->name, "serial") ||
 115             !strcmp(dev->name, "s3ser0"))
 116                 neo1973_gta01_serial0_gsm(0);
 117 #endif
 118
 119         return 0;
 120 }
 121
 122
 123 /***************************************************/
 124
 125 U_BOOT_CMD(
 126         terminal,       3,      1,      do_terminal,
 127         "terminal - start terminal emulator\n",
 128         ""
 129 );
 130
 131 #endif /* CONFIG_CMD_TERMINAL */