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_PXA250) && !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_4xx) \
  42    || defined(CONFIG_MB86R0x) || defined(CONFIG_MPC5xxx) \
  43    || defined(CONFIG_MPC83xx) || defined(CONFIG_MPC85xx) \
  44    || defined(CONFIG_MPC86xx) || defined(CONFIG_SYS_SC520) \
  45    || defined(CONFIG_TEGRA2)
  46 #if defined(CONFIG_CONS_INDEX) && defined(CONFIG_SYS_NS16550_SERIAL)
  47 #if (CONFIG_CONS_INDEX==1)
  48         return &eserial1_device;
  49 #elif (CONFIG_CONS_INDEX==2)
  50         return &eserial2_device;
  51 #elif (CONFIG_CONS_INDEX==3)
  52         return &eserial3_device;
  53 #elif (CONFIG_CONS_INDEX==4)
  54         return &eserial4_device;
  55 #else
  56 #error "Bad CONFIG_CONS_INDEX."
  57 #endif
  58 #else
  59         return &serial0_device;
  60 #endif
  61 #elif defined(CONFIG_MPC512X)
  62 #if (CONFIG_PSC_CONSOLE == 3)
  63                 return &serial3_device;
  64 #elif (CONFIG_PSC_CONSOLE == 6)
  65                 return &serial6_device;
  66 #else
  67 #error "Bad CONFIG_PSC_CONSOLE."
  68 #endif
  69 #elif defined(CONFIG_S3C2410)
  70 #if defined(CONFIG_SERIAL1)
  71         return &s3c24xx_serial0_device;
  72 #elif defined(CONFIG_SERIAL2)
  73         return &s3c24xx_serial1_device;
  74 #elif defined(CONFIG_SERIAL3)
  75         return &s3c24xx_serial2_device;
  76 #else
  77 #error "CONFIG_SERIAL? missing."
  78 #endif
  79 #elif defined(CONFIG_S5P)
  80 #if defined(CONFIG_SERIAL0)
  81         return &s5p_serial0_device;
  82 #elif defined(CONFIG_SERIAL1)
  83         return &s5p_serial1_device;
  84 #elif defined(CONFIG_SERIAL2)
  85         return &s5p_serial2_device;
  86 #elif defined(CONFIG_SERIAL3)
  87         return &s5p_serial3_device;
  88 #else
  89 #error "CONFIG_SERIAL? missing."
  90 #endif
  91 #elif defined(CONFIG_OMAP3_ZOOM2)
  92                 return ZOOM2_DEFAULT_SERIAL_DEVICE;
  93 #else
  94 #error No default console
  95 #endif
  96 }
  97
  98 struct serial_device *default_serial_console(void) __attribute__((weak, alias("__default_serial_console")));
  99 #endif
 100
 101 int serial_register (struct serial_device *dev)
 102 {
 103 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 104         dev->init += gd->reloc_off;
 105         dev->setbrg += gd->reloc_off;
 106         dev->getc += gd->reloc_off;
 107         dev->tstc += gd->reloc_off;
 108         dev->putc += gd->reloc_off;
 109         dev->puts += gd->reloc_off;
 110 #endif
 111
 112         dev->next = serial_devices;
 113         serial_devices = dev;
 114
 115         return 0;
 116 }
 117
 118 void serial_initialize (void)
 119 {
 120 #if defined(CONFIG_8xx_CONS_SMC1) || defined(CONFIG_8xx_CONS_SMC2)
 121         serial_register (&serial_smc_device);
 122 #endif
 123 #if defined(CONFIG_8xx_CONS_SCC1) || defined(CONFIG_8xx_CONS_SCC2) \
 124  || defined(CONFIG_8xx_CONS_SCC3) || defined(CONFIG_8xx_CONS_SCC4)
 125         serial_register (&serial_scc_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_S5P)
 157         serial_register(&s5p_serial0_device);
 158         serial_register(&s5p_serial1_device);
 159         serial_register(&s5p_serial2_device);
 160         serial_register(&s5p_serial3_device);
 161 #endif
 162 #if defined(CONFIG_MPC512X)
 163 #if defined(CONFIG_SYS_PSC1)
 164         serial_register(&serial1_device);
 165 #endif
 166 #if defined(CONFIG_SYS_PSC3)
 167         serial_register(&serial3_device);
 168 #endif
 169 #if defined(CONFIG_SYS_PSC4)
 170         serial_register(&serial4_device);
 171 #endif
 172 #if defined(CONFIG_SYS_PSC6)
 173         serial_register(&serial6_device);
 174 #endif
 175 #endif
 176         serial_assign (default_serial_console ()->name);
 177 }
 178
 179 void serial_stdio_init (void)
 180 {
 181         struct stdio_dev dev;
 182         struct serial_device *s = serial_devices;
 183
 184         while (s) {
 185                 memset (&dev, 0, sizeof (dev));
 186
 187                 strcpy (dev.name, s->name);
 188                 dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT;
 189
 190                 dev.start = s->init;
 191                 dev.stop = s->uninit;
 192                 dev.putc = s->putc;
 193                 dev.puts = s->puts;
 194                 dev.getc = s->getc;
 195                 dev.tstc = s->tstc;
 196
 197                 stdio_register (&dev);
 198
 199                 s = s->next;
 200         }
 201 }
 202
 203 int serial_assign (char *name)
 204 {
 205         struct serial_device *s;
 206
 207         for (s = serial_devices; s; s = s->next) {
 208                 if (strcmp (s->name, name) == 0) {
 209                         serial_current = s;
 210                         return 0;
 211                 }
 212         }
 213
 214         return 1;
 215 }
 216
 217 void serial_reinit_all (void)
 218 {
 219         struct serial_device *s;
 220
 221         for (s = serial_devices; s; s = s->next) {
 222                 s->init ();
 223         }
 224 }
 225
 226 int serial_init (void)
 227 {
 228         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 229                 struct serial_device *dev = default_serial_console ();
 230
 231                 return dev->init ();
 232         }
 233
 234         return serial_current->init ();
 235 }
 236
 237 void serial_setbrg (void)
 238 {
 239         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 240                 struct serial_device *dev = default_serial_console ();
 241
 242                 dev->setbrg ();
 243                 return;
 244         }
 245
 246         serial_current->setbrg ();
 247 }
 248
 249 int serial_getc (void)
 250 {
 251         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 252                 struct serial_device *dev = default_serial_console ();
 253
 254                 return dev->getc ();
 255         }
 256
 257         return serial_current->getc ();
 258 }
 259
 260 int serial_tstc (void)
 261 {
 262         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 263                 struct serial_device *dev = default_serial_console ();
 264
 265                 return dev->tstc ();
 266         }
 267
 268         return serial_current->tstc ();
 269 }
 270
 271 void serial_putc (const char c)
 272 {
 273         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 274                 struct serial_device *dev = default_serial_console ();
 275
 276                 dev->putc (c);
 277                 return;
 278         }
 279
 280         serial_current->putc (c);
 281 }
 282
 283 void serial_puts (const char *s)
 284 {
 285         if (!(gd->flags & GD_FLG_RELOC) || !serial_current) {
 286                 struct serial_device *dev = default_serial_console ();
 287
 288                 dev->puts (s);
 289                 return;
 290         }
 291
 292         serial_current->puts (s);
 293 }