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 #if !defined(CONFIG_LWMON) && !defined(CONFIG_PXA27X)
  34 struct serial_device *__default_serial_console (void)
  35 {
  36 #if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
  37         return &serial_smc_device;
  38 #elif defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
  39    || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
  40         return &serial_scc_device;
  41 #elif defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
  42    || defined(CONFIG_405EP) || defined(CONFIG_405EZ) || defined(CONFIG_405EX) \
  43    || defined(CONFIG_MPC5xxx) || defined(CONFIG_MPC83xx) \
  44    || defined(CONFIG_MPC85xx) || defined(CONFIG_MPC86xx)
  45 #if defined(CONFIG_CONS_INDEX) && defined(CONFIG_SYS_NS16550_SERIAL)
  46 #if (CONFIG_CONS_INDEX==1)
  47         return &eserial1_device;
  48 #elif (CONFIG_CONS_INDEX==2)
  49         return &eserial2_device;
  50 #elif (CONFIG_CONS_INDEX==3)
  51         return &eserial3_device;
  52 #elif (CONFIG_CONS_INDEX==4)
  53         return &eserial4_device;
  54 #else
  55 #error "Bad CONFIG_CONS_INDEX."
  56 #endif
  57 #elif defined(CONFIG_UART1_CONSOLE)
  58                 return &serial1_device;
  59 #else
  60                 return &serial0_device;
  61 #endif
  62 #elif defined(CONFIG_S3C2410)
  63 #if defined(CONFIG_SERIAL1)
  64         return &s3c24xx_serial0_device;
  65 #elif defined(CONFIG_SERIAL2)
  66         return &s3c24xx_serial1_device;
  67 #elif defined(CONFIG_SERIAL3)
  68         return &s3c24xx_serial2_device;
  69 #else
  70 #error "CONFIG_SERIAL? missing."
  71 #endif
  72 #elif defined(CONFIG_S5PC1XX)
  73 #if defined(CONFIG_SERIAL0)
  74         return &s5pc1xx_serial0_device;
  75 #elif defined(CONFIG_SERIAL1)
  76         return &s5pc1xx_serial1_device;
  77 #elif defined(CONFIG_SERIAL2)
  78         return &s5pc1xx_serial2_device;
  79 #elif defined(CONFIG_SERIAL3)
  80         return &s5pc1xx_serial3_device;
  81 #else
  82 #error "CONFIG_SERIAL? missing."
  83 #endif
  84 #elif defined(CONFIG_OMAP3_ZOOM2)
  85                 return ZOOM2_DEFAULT_SERIAL_DEVICE;
  86 #else
  87 #error No default console
  88 #endif
  89 }
  90
  91 struct serial_device *default_serial_console(void) __attribute__((weak, alias("__default_serial_console")));
  92 #endif
  93
  94 int serial_register (struct serial_device *dev)
  95 {
  96 #ifndef CONFIG_RELOC_FIXUP_WORKS
  97         dev->init += gd->reloc_off;
  98         dev->setbrg += gd->reloc_off;
  99         dev->getc += gd->reloc_off;
 100         dev->tstc += gd->reloc_off;
 101         dev->putc += gd->reloc_off;
 102         dev->puts += gd->reloc_off;
 103 #endif
 104
 105         dev->next = serial_devices;
 106         serial_devices = dev;
 107
 108         return 0;
 109 }
 110
 111 void serial_initialize (void)
 112 {
 113 #if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
 114         serial_register (&serial_smc_device);
 115 #endif
 116 #if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
 117  || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
 118         serial_register (&serial_scc_device);
 119 #endif
 120
 121 #if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
 122  || defined(CONFIG_405EP) || defined(CONFIG_405EZ) || defined(CONFIG_405EX) \
 123  || defined(CONFIG_MPC5xxx)
 124         serial_register(&serial0_device);
 125         serial_register(&serial1_device);
 126 #endif
 127
 128 #if defined(CONFIG_SYS_NS16550_SERIAL)
 129 #if defined(CONFIG_SYS_NS16550_COM1)
 130         serial_register(&eserial1_device);
 131 #endif
 132 #if defined(CONFIG_SYS_NS16550_COM2)
 133         serial_register(&eserial2_device);
 134 #endif
 135 #if defined(CONFIG_SYS_NS16550_COM3)
 136         serial_register(&eserial3_device);
 137 #endif
 138 #if defined(CONFIG_SYS_NS16550_COM4)
 139         serial_register(&eserial4_device);
 140 #endif
 141 #endif /* CONFIG_SYS_NS16550_SERIAL */
 142 #if defined (CONFIG_FFUART)
 143         serial_register(&serial_ffuart_device);
 144 #endif
 145 #if defined (CONFIG_BTUART)
 146         serial_register(&serial_btuart_device);
 147 #endif
 148 #if defined (CONFIG_STUART)
 149         serial_register(&serial_stuart_device);
 150 #endif
 151 #if defined(CONFIG_S3C2410)
 152         serial_register(&s3c24xx_serial0_device);
 153         serial_register(&s3c24xx_serial1_device);
 154         serial_register(&s3c24xx_serial2_device);
 155 #endif
 156 #if defined(CONFIG_S5PC1XX)
 157         serial_register(&s5pc1xx_serial0_device);
 158         serial_register(&s5pc1xx_serial1_device);
 159         serial_register(&s5pc1xx_serial2_device);
 160         serial_register(&s5pc1xx_serial3_device);
 161 #endif
 162         serial_assign (default_serial_console ()->name);
 163 }
 164
 165 void serial_stdio_init (void)
 166 {
 167         struct stdio_dev dev;
 168         struct serial_device *s = serial_devices;
 169
 170         while (s) {
 171                 memset (&dev, 0, sizeof (dev));
 172
 173                 strcpy (dev.name, s->name);
 174                 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
 175
 176                 dev.start = s->init;
 177                 dev.putc = s->putc;
 178                 dev.puts = s->puts;
 179                 dev.getc = s->getc;
 180                 dev.tstc = s->tstc;
 181
 182                 stdio_register (&dev);
 183
 184                 s = s->next;
 185         }
 186 }
 187
 188 int serial_assign (char *name)
 189 {
 190         struct serial_device *s;
 191
 192         for (s = serial_devices; s; s = s->next) {
 193                 if (strcmp (s->name, name) == 0) {
 194                         serial_current = s;
 195                         return 0;
 196                 }
 197         }
 198
 199         return 1;
 200 }
 201
 202 void serial_reinit_all (void)
 203 {
 204         struct serial_device *s;
 205
 206         for (s = serial_devices; s; s = s->next) {
 207                 s->init ();
 208         }
 209 }
 210
 211 int serial_init (void)
 212 {
 213         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 214                 struct serial_device *dev = default_serial_console ();
 215
 216                 return dev->init ();
 217         }
 218
 219         return serial_current->init ();
 220 }
 221
 222 void serial_setbrg (void)
 223 {
 224         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 225                 struct serial_device *dev = default_serial_console ();
 226
 227                 dev->setbrg ();
 228                 return;
 229         }
 230
 231         serial_current->setbrg ();
 232 }
 233
 234 int serial_getc (void)
 235 {
 236         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 237                 struct serial_device *dev = default_serial_console ();
 238
 239                 return dev->getc ();
 240         }
 241
 242         return serial_current->getc ();
 243 }
 244
 245 int serial_tstc (void)
 246 {
 247         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 248                 struct serial_device *dev = default_serial_console ();
 249
 250                 return dev->tstc ();
 251         }
 252
 253         return serial_current->tstc ();
 254 }
 255
 256 void serial_putc (const char c)
 257 {
 258         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 259                 struct serial_device *dev = default_serial_console ();
 260
 261                 dev->putc (c);
 262                 return;
 263         }
 264
 265         serial_current->putc (c);
 266 }
 267
 268 void serial_puts (const char *s)
 269 {
 270         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 271                 struct serial_device *dev = default_serial_console ();
 272
 273                 dev->puts (s);
 274                 return;
 275         }
 276
 277         serial_current->puts (s);
 278 }