common/serial.c

   1 /*
   2  * (C) Copyright 2004
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   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 #include <common.h>
  25 #include <serial.h>
  26 #include <stdio_dev.h>
  27
  28 DECLARE_GLOBAL_DATA_PTR;
  29
  30 static struct serial_device *serial_devices = NULL;
  31 static struct serial_device *serial_current = NULL;
  32
  33 void serial_register(struct serial_device *dev)
  34 {
  35 #ifdef CONFIG_NEEDS_MANUAL_RELOC
  36         dev->init += gd->reloc_off;
  37         dev->setbrg += gd->reloc_off;
  38         dev->getc += gd->reloc_off;
  39         dev->tstc += gd->reloc_off;
  40         dev->putc += gd->reloc_off;
  41         dev->puts += gd->reloc_off;
  42 #endif
  43
  44         dev->next = serial_devices;
  45         serial_devices = dev;
  46 }
  47
  48 void serial_initialize (void)
  49 {
  50 #if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
  51         serial_register (&serial_smc_device);
  52 #endif
  53 #if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
  54  || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
  55         serial_register (&serial_scc_device);
  56 #endif
  57
  58 #if defined(CONFIG_SYS_NS16550_SERIAL)
  59 #if defined(CONFIG_SYS_NS16550_COM1)
  60         serial_register(&eserial1_device);
  61 #endif
  62 #if defined(CONFIG_SYS_NS16550_COM2)
  63         serial_register(&eserial2_device);
  64 #endif
  65 #if defined(CONFIG_SYS_NS16550_COM3)
  66         serial_register(&eserial3_device);
  67 #endif
  68 #if defined(CONFIG_SYS_NS16550_COM4)
  69         serial_register(&eserial4_device);
  70 #endif
  71 #endif /* CONFIG_SYS_NS16550_SERIAL */
  72 #if defined (CONFIG_FFUART)
  73         serial_register(&serial_ffuart_device);
  74 #endif
  75 #if defined (CONFIG_BTUART)
  76         serial_register(&serial_btuart_device);
  77 #endif
  78 #if defined (CONFIG_STUART)
  79         serial_register(&serial_stuart_device);
  80 #endif
  81 #if defined(CONFIG_S3C2410)
  82         serial_register(&s3c24xx_serial0_device);
  83         serial_register(&s3c24xx_serial1_device);
  84         serial_register(&s3c24xx_serial2_device);
  85 #endif
  86 #if defined(CONFIG_S5P)
  87         serial_register(&s5p_serial0_device);
  88         serial_register(&s5p_serial1_device);
  89         serial_register(&s5p_serial2_device);
  90         serial_register(&s5p_serial3_device);
  91 #endif
  92 #if defined(CONFIG_MPC512X)
  93 #if defined(CONFIG_SYS_PSC1)
  94         serial_register(&serial1_device);
  95 #endif
  96 #if defined(CONFIG_SYS_PSC3)
  97         serial_register(&serial3_device);
  98 #endif
  99 #if defined(CONFIG_SYS_PSC4)
 100         serial_register(&serial4_device);
 101 #endif
 102 #if defined(CONFIG_SYS_PSC6)
 103         serial_register(&serial6_device);
 104 #endif
 105 #endif
 106         serial_assign (default_serial_console ()->name);
 107 }
 108
 109 void serial_stdio_init (void)
 110 {
 111         struct stdio_dev dev;
 112         struct serial_device *s = serial_devices;
 113
 114         while (s) {
 115                 memset (&dev, 0, sizeof (dev));
 116
 117                 strcpy (dev.name, s->name);
 118                 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
 119
 120                 dev.start = s->init;
 121                 dev.stop = s->uninit;
 122                 dev.putc = s->putc;
 123                 dev.puts = s->puts;
 124                 dev.getc = s->getc;
 125                 dev.tstc = s->tstc;
 126
 127                 stdio_register (&dev);
 128
 129                 s = s->next;
 130         }
 131 }
 132
 133 int serial_assign (char *name)
 134 {
 135         struct serial_device *s;
 136
 137         for (s = serial_devices; s; s = s->next) {
 138                 if (strcmp (s->name, name) == 0) {
 139                         serial_current = s;
 140                         return 0;
 141                 }
 142         }
 143
 144         return 1;
 145 }
 146
 147 void serial_reinit_all (void)
 148 {
 149         struct serial_device *s;
 150
 151         for (s = serial_devices; s; s = s->next) {
 152                 s->init ();
 153         }
 154 }
 155
 156 int serial_init (void)
 157 {
 158         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 159                 struct serial_device *dev = default_serial_console ();
 160
 161                 return dev->init ();
 162         }
 163
 164         return serial_current->init ();
 165 }
 166
 167 void serial_setbrg (void)
 168 {
 169         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 170                 struct serial_device *dev = default_serial_console ();
 171
 172                 dev->setbrg ();
 173                 return;
 174         }
 175
 176         serial_current->setbrg ();
 177 }
 178
 179 int serial_getc (void)
 180 {
 181         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 182                 struct serial_device *dev = default_serial_console ();
 183
 184                 return dev->getc ();
 185         }
 186
 187         return serial_current->getc ();
 188 }
 189
 190 int serial_tstc (void)
 191 {
 192         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 193                 struct serial_device *dev = default_serial_console ();
 194
 195                 return dev->tstc ();
 196         }
 197
 198         return serial_current->tstc ();
 199 }
 200
 201 void serial_putc (const char c)
 202 {
 203         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 204                 struct serial_device *dev = default_serial_console ();
 205
 206                 dev->putc (c);
 207                 return;
 208         }
 209
 210         serial_current->putc (c);
 211 }
 212
 213 void serial_puts (const char *s)
 214 {
 215         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 216                 struct serial_device *dev = default_serial_console ();
 217
 218                 dev->puts (s);
 219                 return;
 220         }
 221
 222         serial_current->puts (s);
 223 }