src/console/console.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2003 Eric Biederman
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  18  */
  19
  20 #include <console/console.h>
  21 #include <build.h>
  22 #include <arch/hlt.h>
  23 #include <arch/io.h>
  24
  25 #ifndef __PRE_RAM__
  26 #include <string.h>
  27 #include <pc80/mc146818rtc.h>
  28
  29 /* initialize the console */
  30 void console_init(void)
  31 {
  32         struct console_driver *driver;
  33         if(get_option(&console_loglevel, "debug_level"))
  34                 console_loglevel=CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
  35
  36         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  37                 if (!driver->init)
  38                         continue;
  39                 driver->init();
  40         }
  41 }
  42
  43 void console_tx_flush(void)
  44 {
  45         struct console_driver *driver;
  46         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  47                 if (!driver->tx_flush)
  48                         continue;
  49                 driver->tx_flush();
  50         }
  51 }
  52
  53 static void __console_tx_byte(unsigned char byte)
  54 {
  55         struct console_driver *driver;
  56         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  57                 driver->tx_byte(byte);
  58         }
  59 }
  60
  61 void console_tx_byte(unsigned char byte)
  62 {
  63         if (byte == '\n')
  64                 __console_tx_byte('\r');
  65         __console_tx_byte(byte);
  66 }
  67
  68 unsigned char console_rx_byte(void)
  69 {
  70         struct console_driver *driver;
  71         for(driver = console_drivers; driver < econsole_drivers; driver++) {
  72                 if (driver->tst_byte)
  73                         break;
  74         }
  75         if (driver == econsole_drivers)
  76                 return 0;
  77         while (!driver->tst_byte());
  78         return driver->rx_byte();
  79 }
  80
  81 int console_tst_byte(void)
  82 {
  83         struct console_driver *driver;
  84         for(driver = console_drivers; driver < econsole_drivers; driver++)
  85                 if (driver->tst_byte)
  86                         return driver->tst_byte();
  87         return 0;
  88 }
  89
  90 #else // __PRE_RAM__   ^^^ NOT defined   vvv defined
  91
  92 void console_init(void)
  93 {
  94 #if CONFIG_USBDEBUG
  95         enable_usbdebug(CONFIG_USBDEBUG_DEFAULT_PORT);
  96         early_usbdebug_init();
  97 #endif
  98 #if CONFIG_CONSOLE_SERIAL8250
  99         uart_init();
 100 #endif
 101 #if CONFIG_DRIVERS_OXFORD_OXPCIE && CONFIG_CONSOLE_SERIAL8250MEM
 102         oxford_init();
 103 #endif
 104 #if CONFIG_CONSOLE_NE2K
 105         ne2k_init(CONFIG_CONSOLE_NE2K_IO_PORT);
 106 #endif
 107 #if CONFIG_CONSOLE_CBMEM
 108         cbmemc_init();
 109 #endif
 110         static const char console_test[] =
 111                 "\n\ncoreboot-"
 112                 COREBOOT_VERSION
 113                 COREBOOT_EXTRA_VERSION
 114                 " "
 115                 COREBOOT_BUILD
 116                 " starting...\n";
 117         print_info(console_test);
 118 }
 119 #endif