examples/smc91111_eeprom.c

   1 /*
   2  * (C) Copyright 2004
   3  * Robin Getz rgetz@blacfin.uclinux.org
   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  * Heavily borrowed from the following peoples GPL'ed software:
  24  *  - Wolfgang Denk, DENX Software Engineering, wd@denx.de
  25  *       Das U-boot
  26  *  - Ladislav Michl ladis@linux-mips.org
  27  *       A rejected patch on the U-Boot mailing list
  28  */
  29
  30 #include <common.h>
  31 #include <exports.h>
  32 #include "../drivers/net/smc91111.h"
  33
  34 #ifdef CONFIG_DRIVER_SMC91111
  35
  36 #ifdef pFIO0_DIR
  37 # define pFIO_DIR    pFIO0_DIR
  38 # define pFIO_FLAG_S pFIO0_FLAG_S
  39 #endif
  40
  41 #define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
  42 #define EEPROM          0x1;
  43 #define MAC             0x2;
  44 #define UNKNOWN         0x4;
  45
  46 void dump_reg (void);
  47 void dump_eeprom (void);
  48 int write_eeprom_reg (int, int);
  49 void copy_from_eeprom (void);
  50 void print_MAC (void);
  51 int read_eeprom_reg (int);
  52 void print_macaddr (void);
  53
  54 int smc91111_eeprom (int argc, char *argv[])
  55 {
  56         int c, i, j, done, line, reg, value, start, what;
  57         char input[50];
  58
  59         /* Print the ABI version */
  60         app_startup (argv);
  61         if (XF_VERSION != (int) get_version ()) {
  62                 printf ("Expects ABI version %d\n", XF_VERSION);
  63                 printf ("Actual U-Boot ABI version %d\n",
  64                         (int) get_version ());
  65                 printf ("Can't run\n\n");
  66                 return (0);
  67         }
  68
  69         *pFIO_DIR = 0x01;
  70         *pFIO_FLAG_S = 0x01;
  71         SSYNC();
  72
  73         if ((SMC_inw (BANK_SELECT) & 0xFF00) != 0x3300) {
  74                 printf ("Can't find SMSC91111\n");
  75                 return (0);
  76         }
  77
  78         done = 0;
  79         what = UNKNOWN;
  80         printf ("\n");
  81         while (!done) {
  82                 /* print the prompt */
  83                 printf ("SMC91111> ");
  84                 line = 0;
  85                 i = 0;
  86                 start = 1;
  87                 while (!line) {
  88                         /* Wait for a keystroke */
  89                         while (!tstc ());
  90
  91                         c = getc ();
  92                         /* Make Uppercase */
  93                         if (c >= 'Z')
  94                                 c -= ('a' - 'A');
  95                         /* printf(" |%02x| ",c); */
  96
  97                         switch (c) {
  98                         case '\r':      /* Enter                */
  99                         case '\n':
 100                                 input[i] = 0;
 101                                 puts ("\r\n");
 102                                 line = 1;
 103                                 break;
 104                         case '\0':      /* nul                  */
 105                                 continue;
 106
 107                         case 0x03:      /* ^C - break           */
 108                                 input[0] = 0;
 109                                 i = 0;
 110                                 line = 1;
 111                                 done = 1;
 112                                 break;
 113
 114                         case 0x5F:
 115                         case 0x08:      /* ^H  - backspace      */
 116                         case 0x7F:      /* DEL - backspace      */
 117                                 if (i > 0) {
 118                                         puts ("\b \b");
 119                                         i--;
 120                                 }
 121                                 break;
 122                         default:
 123                                 if (start) {
 124                                         if ((c == 'W') || (c == 'D')
 125                                             || (c == 'M') || (c == 'C')
 126                                             || (c == 'P')) {
 127                                                 putc (c);
 128                                                 input[i] = c;
 129                                                 if (i <= 45)
 130                                                         i++;
 131                                                 start = 0;
 132                                         }
 133                                 } else {
 134                                         if ((c >= '0' && c <= '9')
 135                                             || (c >= 'A' && c <= 'F')
 136                                             || (c == 'E') || (c == 'M')
 137                                             || (c == ' ')) {
 138                                                 putc (c);
 139                                                 input[i] = c;
 140                                                 if (i <= 45)
 141                                                         i++;
 142                                                 break;
 143                                         }
 144                                 }
 145                                 break;
 146                         }
 147                 }
 148
 149                 for (; i < 49; i++)
 150                         input[i] = 0;
 151
 152                 switch (input[0]) {
 153                 case ('W'):
 154                         /* Line should be w reg value */
 155                         i = 0;
 156                         reg = 0;
 157                         value = 0;
 158                         /* Skip to the next space or end) */
 159                         while ((input[i] != ' ') && (input[i] != 0))
 160                                 i++;
 161
 162                         if (input[i] != 0)
 163                                 i++;
 164
 165                         /* Are we writing to EEPROM or MAC */
 166                         switch (input[i]) {
 167                         case ('E'):
 168                                 what = EEPROM;
 169                                 break;
 170                         case ('M'):
 171                                 what = MAC;
 172                                 break;
 173                         default:
 174                                 what = UNKNOWN;
 175                                 break;
 176                         }
 177
 178                         /* skip to the next space or end */
 179                         while ((input[i] != ' ') && (input[i] != 0))
 180                                 i++;
 181                         if (input[i] != 0)
 182                                 i++;
 183
 184                         /* Find register to write into */
 185                         j = 0;
 186                         while ((input[i] != ' ') && (input[i] != 0)) {
 187                                 j = input[i] - 0x30;
 188                                 if (j >= 0xA) {
 189                                         j -= 0x07;
 190                                 }
 191                                 reg = (reg * 0x10) + j;
 192                                 i++;
 193                         }
 194
 195                         while ((input[i] != ' ') && (input[i] != 0))
 196                                 i++;
 197
 198                         if (input[i] != 0)
 199                                 i++;
 200                         else
 201                                 what = UNKNOWN;
 202
 203                         /* Get the value to write */
 204                         j = 0;
 205                         while ((input[i] != ' ') && (input[i] != 0)) {
 206                                 j = input[i] - 0x30;
 207                                 if (j >= 0xA) {
 208                                         j -= 0x07;
 209                                 }
 210                                 value = (value * 0x10) + j;
 211                                 i++;
 212                         }
 213
 214                         switch (what) {
 215                         case 1:
 216                                 printf ("Writing EEPROM register %02x with %04x\n", reg, value);
 217                                 write_eeprom_reg (value, reg);
 218                                 break;
 219                         case 2:
 220                                 printf ("Writing MAC register bank %i, reg %02x with %04x\n", reg >> 4, reg & 0xE, value);
 221                                 SMC_SELECT_BANK (reg >> 4);
 222                                 SMC_outw (value, reg & 0xE);
 223                                 break;
 224                         default:
 225                                 printf ("Wrong\n");
 226                                 break;
 227                         }
 228                         break;
 229                 case ('D'):
 230                         dump_eeprom ();
 231                         break;
 232                 case ('M'):
 233                         dump_reg ();
 234                         break;
 235                 case ('C'):
 236                         copy_from_eeprom ();
 237                         break;
 238                 case ('P'):
 239                         print_macaddr ();
 240                         break;
 241                 default:
 242                         break;
 243                 }
 244
 245         }
 246
 247         return (0);
 248 }
 249
 250 void copy_from_eeprom (void)
 251 {
 252         int i;
 253
 254         SMC_SELECT_BANK (1);
 255         SMC_outw ((SMC_inw (CTL_REG) & !CTL_EEPROM_SELECT) | CTL_RELOAD,
 256                   CTL_REG);
 257         i = 100;
 258         while ((SMC_inw (CTL_REG) & CTL_RELOAD) && --i)
 259                 udelay (100);
 260         if (i == 0) {
 261                 printf ("Timeout Refreshing EEPROM registers\n");
 262         } else {
 263                 printf ("EEPROM contents copied to MAC\n");
 264         }
 265
 266 }
 267
 268 void print_macaddr (void)
 269 {
 270         int i, j, k, mac[6];
 271
 272         printf ("Current MAC Address in SMSC91111 ");
 273         SMC_SELECT_BANK (1);
 274         for (i = 0; i < 5; i++) {
 275                 printf ("%02x:", SMC_inb (ADDR0_REG + i));
 276         }
 277
 278         printf ("%02x\n", SMC_inb (ADDR0_REG + 5));
 279
 280         i = 0;
 281         for (j = 0x20; j < 0x23; j++) {
 282                 k = read_eeprom_reg (j);
 283                 mac[i] = k & 0xFF;
 284                 i++;
 285                 mac[i] = k >> 8;
 286                 i++;
 287         }
 288
 289         printf ("Current MAC Address in EEPROM    ");
 290         for (i = 0; i < 5; i++)
 291                 printf ("%02x:", mac[i]);
 292         printf ("%02x\n", mac[5]);
 293
 294 }
 295 void dump_eeprom (void)
 296 {
 297         int j, k;
 298
 299         printf ("IOS2-0    ");
 300         for (j = 0; j < 8; j++) {
 301                 printf ("%03x     ", j);
 302         }
 303         printf ("\n");
 304
 305         for (k = 0; k < 4; k++) {
 306                 if (k == 0)
 307                         printf ("CONFIG ");
 308                 if (k == 1)
 309                         printf ("BASE   ");
 310                 if ((k == 2) || (k == 3))
 311                         printf ("       ");
 312                 for (j = 0; j < 0x20; j += 4) {
 313                         printf ("%02x:%04x ", j + k, read_eeprom_reg (j + k));
 314                 }
 315                 printf ("\n");
 316         }
 317
 318         for (j = 0x20; j < 0x40; j++) {
 319                 if ((j & 0x07) == 0)
 320                         printf ("\n");
 321                 printf ("%02x:%04x ", j, read_eeprom_reg (j));
 322         }
 323         printf ("\n");
 324
 325 }
 326
 327 int read_eeprom_reg (int reg)
 328 {
 329         int timeout;
 330
 331         SMC_SELECT_BANK (2);
 332         SMC_outw (reg, PTR_REG);
 333
 334         SMC_SELECT_BANK (1);
 335         SMC_outw (SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_RELOAD,
 336                   CTL_REG);
 337         timeout = 100;
 338         while ((SMC_inw (CTL_REG) & CTL_RELOAD) && --timeout)
 339                 udelay (100);
 340         if (timeout == 0) {
 341                 printf ("Timeout Reading EEPROM register %02x\n", reg);
 342                 return 0;
 343         }
 344
 345         return SMC_inw (GP_REG);
 346
 347 }
 348
 349 int write_eeprom_reg (int value, int reg)
 350 {
 351         int timeout;
 352
 353         SMC_SELECT_BANK (2);
 354         SMC_outw (reg, PTR_REG);
 355
 356         SMC_SELECT_BANK (1);
 357         SMC_outw (value, GP_REG);
 358         SMC_outw (SMC_inw (CTL_REG) | CTL_EEPROM_SELECT | CTL_STORE, CTL_REG);
 359         timeout = 100;
 360         while ((SMC_inw (CTL_REG) & CTL_STORE) && --timeout)
 361                 udelay (100);
 362         if (timeout == 0) {
 363                 printf ("Timeout Writing EEPROM register %02x\n", reg);
 364                 return 0;
 365         }
 366
 367         return 1;
 368
 369 }
 370
 371 void dump_reg (void)
 372 {
 373         int i, j;
 374
 375         printf ("    ");
 376         for (j = 0; j < 4; j++) {
 377                 printf ("Bank%i ", j);
 378         }
 379         printf ("\n");
 380         for (i = 0; i < 0xF; i += 2) {
 381                 printf ("%02x  ", i);
 382                 for (j = 0; j < 4; j++) {
 383                         SMC_SELECT_BANK (j);
 384                         printf ("%04x  ", SMC_inw (i));
 385                 }
 386                 printf ("\n");
 387         }
 388 }
 389
 390 #else
 391
 392 int smc91111_eeprom (int argc, char *argv[])
 393 {
 394         printf("Not supported for this board\n");
 395         return 1;
 396 }
 397
 398 #endif