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_MPC512X)
  63 #if (CONFIG_PSC_CONSOLE == 3)
  64                 return &serial3_device;
  65 #elif (CONFIG_PSC_CONSOLE == 6)
  66                 return &serial6_device;
  67 #else
  68 #error "Bad CONFIG_PSC_CONSOLE."
  69 #endif
  70 #elif defined(CONFIG_S3C2410)
  71 #if defined(CONFIG_SERIAL1)
  72         return &s3c24xx_serial0_device;
  73 #elif defined(CONFIG_SERIAL2)
  74         return &s3c24xx_serial1_device;
  75 #elif defined(CONFIG_SERIAL3)
  76         return &s3c24xx_serial2_device;
  77 #else
  78 #error "CONFIG_SERIAL? missing."
  79 #endif
  80 #elif defined(CONFIG_S5PC1XX)
  81 #if defined(CONFIG_SERIAL0)
  82         return &s5pc1xx_serial0_device;
  83 #elif defined(CONFIG_SERIAL1)
  84         return &s5pc1xx_serial1_device;
  85 #elif defined(CONFIG_SERIAL2)
  86         return &s5pc1xx_serial2_device;
  87 #elif defined(CONFIG_SERIAL3)
  88         return &s5pc1xx_serial3_device;
  89 #else
  90 #error "CONFIG_SERIAL? missing."
  91 #endif
  92 #elif defined(CONFIG_OMAP3_ZOOM2)
  93                 return ZOOM2_DEFAULT_SERIAL_DEVICE;
  94 #else
  95 #error No default console
  96 #endif
  97 }
  98
  99 struct serial_device *default_serial_console(void) __attribute__((weak, alias("__default_serial_console")));
 100 #endif
 101
 102 int serial_register (struct serial_device *dev)
 103 {
 104 #ifndef CONFIG_RELOC_FIXUP_WORKS
 105         dev->init += gd->reloc_off;
 106         dev->setbrg += gd->reloc_off;
 107         dev->getc += gd->reloc_off;
 108         dev->tstc += gd->reloc_off;
 109         dev->putc += gd->reloc_off;
 110         dev->puts += gd->reloc_off;
 111 #endif
 112
 113         dev->next = serial_devices;
 114         serial_devices = dev;
 115
 116         return 0;
 117 }
 118
 119 void serial_initialize (void)
 120 {
 121 #if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
 122         serial_register (&serial_smc_device);
 123 #endif
 124 #if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
 125  || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
 126         serial_register (&serial_scc_device);
 127 #endif
 128
 129 #if defined(CONFIG_405GP) || defined(CONFIG_405CR) || defined(CONFIG_440) \
 130  || defined(CONFIG_405EP) || defined(CONFIG_405EZ) || defined(CONFIG_405EX) \
 131  || defined(CONFIG_MPC5xxx)
 132         serial_register(&serial0_device);
 133         serial_register(&serial1_device);
 134 #endif
 135
 136 #if defined(CONFIG_SYS_NS16550_SERIAL)
 137 #if defined(CONFIG_SYS_NS16550_COM1)
 138         serial_register(&eserial1_device);
 139 #endif
 140 #if defined(CONFIG_SYS_NS16550_COM2)
 141         serial_register(&eserial2_device);
 142 #endif
 143 #if defined(CONFIG_SYS_NS16550_COM3)
 144         serial_register(&eserial3_device);
 145 #endif
 146 #if defined(CONFIG_SYS_NS16550_COM4)
 147         serial_register(&eserial4_device);
 148 #endif
 149 #endif /* CONFIG_SYS_NS16550_SERIAL */
 150 #if defined (CONFIG_FFUART)
 151         serial_register(&serial_ffuart_device);
 152 #endif
 153 #if defined (CONFIG_BTUART)
 154         serial_register(&serial_btuart_device);
 155 #endif
 156 #if defined (CONFIG_STUART)
 157         serial_register(&serial_stuart_device);
 158 #endif
 159 #if defined(CONFIG_S3C2410)
 160         serial_register(&s3c24xx_serial0_device);
 161         serial_register(&s3c24xx_serial1_device);
 162         serial_register(&s3c24xx_serial2_device);
 163 #endif
 164 #if defined(CONFIG_S5PC1XX)
 165         serial_register(&s5pc1xx_serial0_device);
 166         serial_register(&s5pc1xx_serial1_device);
 167         serial_register(&s5pc1xx_serial2_device);
 168         serial_register(&s5pc1xx_serial3_device);
 169 #endif
 170 #if defined(CONFIG_MPC512X)
 171 #if defined(CONFIG_SYS_PSC1)
 172         serial_register(&serial1_device);
 173 #endif
 174 #if defined(CONFIG_SYS_PSC3)
 175         serial_register(&serial3_device);
 176 #endif
 177 #if defined(CONFIG_SYS_PSC4)
 178         serial_register(&serial4_device);
 179 #endif
 180 #if defined(CONFIG_SYS_PSC6)
 181         serial_register(&serial6_device);
 182 #endif
 183 #endif
 184         serial_assign (default_serial_console ()->name);
 185 }
 186
 187 void serial_stdio_init (void)
 188 {
 189         struct stdio_dev dev;
 190         struct serial_device *s = serial_devices;
 191
 192         while (s) {
 193                 memset (&dev, 0, sizeof (dev));
 194
 195                 strcpy (dev.name, s->name);
 196                 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
 197
 198                 dev.start = s->init;
 199                 dev.stop = s->uninit;
 200                 dev.putc = s->putc;
 201                 dev.puts = s->puts;
 202                 dev.getc = s->getc;
 203                 dev.tstc = s->tstc;
 204
 205                 stdio_register (&dev);
 206
 207                 s = s->next;
 208         }
 209 }
 210
 211 int serial_assign (char *name)
 212 {
 213         struct serial_device *s;
 214
 215         for (s = serial_devices; s; s = s->next) {
 216                 if (strcmp (s->name, name) == 0) {
 217                         serial_current = s;
 218                         return 0;
 219                 }
 220         }
 221
 222         return 1;
 223 }
 224
 225 void serial_reinit_all (void)
 226 {
 227         struct serial_device *s;
 228
 229         for (s = serial_devices; s; s = s->next) {
 230                 s->init ();
 231         }
 232 }
 233
 234 int serial_init (void)
 235 {
 236         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 237                 struct serial_device *dev = default_serial_console ();
 238
 239                 return dev->init ();
 240         }
 241
 242         return serial_current->init ();
 243 }
 244
 245 void serial_setbrg (void)
 246 {
 247         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 248                 struct serial_device *dev = default_serial_console ();
 249
 250                 dev->setbrg ();
 251                 return;
 252         }
 253
 254         serial_current->setbrg ();
 255 }
 256
 257 int serial_getc (void)
 258 {
 259         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 260                 struct serial_device *dev = default_serial_console ();
 261
 262                 return dev->getc ();
 263         }
 264
 265         return serial_current->getc ();
 266 }
 267
 268 int serial_tstc (void)
 269 {
 270         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 271                 struct serial_device *dev = default_serial_console ();
 272
 273                 return dev->tstc ();
 274         }
 275
 276         return serial_current->tstc ();
 277 }
 278
 279 void serial_putc (const char c)
 280 {
 281         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 282                 struct serial_device *dev = default_serial_console ();
 283
 284                 dev->putc (c);
 285                 return;
 286         }
 287
 288         serial_current->putc (c);
 289 }
 290
 291 void serial_puts (const char *s)
 292 {
 293         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 294                 struct serial_device *dev = default_serial_console ();
 295
 296                 dev->puts (s);
 297                 return;
 298         }
 299
 300         serial_current->puts (s);
 301 }