examples/standalone/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 #ifndef SMC91111_EEPROM_INIT
  35 # define SMC91111_EEPROM_INIT()
  36 #endif
  37
  38 #define SMC_BASE_ADDRESS CONFIG_SMC91111_BASE
  39 #define EEPROM          0x1
  40 #define MAC             0x2
  41 #define UNKNOWN         0x4
  42
  43 void dump_reg (struct eth_device *dev);
  44 void dump_eeprom (struct eth_device *dev);
  45 int write_eeprom_reg (struct eth_device *dev, int value, int reg);
  46 void copy_from_eeprom (struct eth_device *dev);
  47 void print_MAC (struct eth_device *dev);
  48 int read_eeprom_reg (struct eth_device *dev, int reg);
  49 void print_macaddr (struct eth_device *dev);
  50
  51 int smc91111_eeprom (int argc, char * const argv[])
  52 {
  53         int c, i, j, done, line, reg, value, start, what;
  54         char input[50];
  55
  56         struct eth_device dev;
  57         dev.iobase = CONFIG_SMC91111_BASE;
  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         SMC91111_EEPROM_INIT();
  70
  71         if ((SMC_inw (&dev, BANK_SELECT) & 0xFF00) != 0x3300) {
  72                 printf ("Can't find SMSC91111\n");
  73                 return (0);
  74         }
  75
  76         done = 0;
  77         what = UNKNOWN;
  78         printf ("\n");
  79         while (!done) {
  80                 /* print the prompt */
  81                 printf ("SMC91111> ");
  82                 line = 0;
  83                 i = 0;
  84                 start = 1;
  85                 while (!line) {
  86                         /* Wait for a keystroke */
  87                         while (!tstc ());
  88
  89                         c = getc ();
  90                         /* Make Uppercase */
  91                         if (c >= 'Z')
  92                                 c -= ('a' - 'A');
  93                         /* printf(" |%02x| ",c); */
  94
  95                         switch (c) {
  96                         case '\r':      /* Enter                */
  97                         case '\n':
  98                                 input[i] = 0;
  99                                 puts ("\r\n");
 100                                 line = 1;
 101                                 break;
 102                         case '\0':      /* nul                  */
 103                                 continue;
 104
 105                         case 0x03:      /* ^C - break           */
 106                                 input[0] = 0;
 107                                 i = 0;
 108                                 line = 1;
 109                                 done = 1;
 110                                 break;
 111
 112                         case 0x5F:
 113                         case 0x08:      /* ^H  - backspace      */
 114                         case 0x7F:      /* DEL - backspace      */
 115                                 if (i > 0) {
 116                                         puts ("\b \b");
 117                                         i--;
 118                                 }
 119                                 break;
 120                         default:
 121                                 if (start) {
 122                                         if ((c == 'W') || (c == 'D')
 123                                             || (c == 'M') || (c == 'C')
 124                                             || (c == 'P')) {
 125                                                 putc (c);
 126                                                 input[i] = c;
 127                                                 if (i <= 45)
 128                                                         i++;
 129                                                 start = 0;
 130                                         }
 131                                 } else {
 132                                         if ((c >= '0' && c <= '9')
 133                                             || (c >= 'A' && c <= 'F')
 134                                             || (c == 'E') || (c == 'M')
 135                                             || (c == ' ')) {
 136                                                 putc (c);
 137                                                 input[i] = c;
 138                                                 if (i <= 45)
 139                                                         i++;
 140                                                 break;
 141                                         }
 142                                 }
 143                                 break;
 144                         }
 145                 }
 146
 147                 for (; i < 49; i++)
 148                         input[i] = 0;
 149
 150                 switch (input[0]) {
 151                 case ('W'):
 152                         /* Line should be w reg value */
 153                         i = 0;
 154                         reg = 0;
 155                         value = 0;
 156                         /* Skip to the next space or end) */
 157                         while ((input[i] != ' ') && (input[i] != 0))
 158                                 i++;
 159
 160                         if (input[i] != 0)
 161                                 i++;
 162
 163                         /* Are we writing to EEPROM or MAC */
 164                         switch (input[i]) {
 165                         case ('E'):
 166                                 what = EEPROM;
 167                                 break;
 168                         case ('M'):
 169                                 what = MAC;
 170                                 break;
 171                         default:
 172                                 what = UNKNOWN;
 173                                 break;
 174                         }
 175
 176                         /* skip to the next space or end */
 177                         while ((input[i] != ' ') && (input[i] != 0))
 178                                 i++;
 179                         if (input[i] != 0)
 180                                 i++;
 181
 182                         /* Find register to write into */
 183                         j = 0;
 184                         while ((input[i] != ' ') && (input[i] != 0)) {
 185                                 j = input[i] - 0x30;
 186                                 if (j >= 0xA) {
 187                                         j -= 0x07;
 188                                 }
 189                                 reg = (reg * 0x10) + j;
 190                                 i++;
 191                         }
 192
 193                         while ((input[i] != ' ') && (input[i] != 0))
 194                                 i++;
 195
 196                         if (input[i] != 0)
 197                                 i++;
 198                         else
 199                                 what = UNKNOWN;
 200
 201                         /* Get the value to write */
 202                         j = 0;
 203                         while ((input[i] != ' ') && (input[i] != 0)) {
 204                                 j = input[i] - 0x30;
 205                                 if (j >= 0xA) {
 206                                         j -= 0x07;
 207                                 }
 208                                 value = (value * 0x10) + j;
 209                                 i++;
 210                         }
 211
 212                         switch (what) {
 213                         case 1:
 214                                 printf ("Writing EEPROM register %02x with %04x\n", reg, value);
 215                                 write_eeprom_reg (&dev, value, reg);
 216                                 break;
 217                         case 2:
 218                                 printf ("Writing MAC register bank %i, reg %02x with %04x\n", reg >> 4, reg & 0xE, value);
 219                                 SMC_SELECT_BANK (&dev, reg >> 4);
 220                                 SMC_outw (&dev, value, reg & 0xE);
 221                                 break;
 222                         default:
 223                                 printf ("Wrong\n");
 224                                 break;
 225                         }
 226                         break;
 227                 case ('D'):
 228                         dump_eeprom (&dev);
 229                         break;
 230                 case ('M'):
 231                         dump_reg (&dev);
 232                         break;
 233                 case ('C'):
 234                         copy_from_eeprom (&dev);
 235                         break;
 236                 case ('P'):
 237                         print_macaddr (&dev);
 238                         break;
 239                 default:
 240                         break;
 241                 }
 242
 243         }
 244
 245         return (0);
 246 }
 247
 248 void copy_from_eeprom (struct eth_device *dev)
 249 {
 250         int i;
 251
 252         SMC_SELECT_BANK (dev, 1);
 253         SMC_outw (dev, (SMC_inw (dev, CTL_REG) & !CTL_EEPROM_SELECT) |
 254                 CTL_RELOAD, CTL_REG);
 255         i = 100;
 256         while ((SMC_inw (dev, CTL_REG) & CTL_RELOAD) && --i)
 257                 udelay (100);
 258         if (i == 0) {
 259                 printf ("Timeout Refreshing EEPROM registers\n");
 260         } else {
 261                 printf ("EEPROM contents copied to MAC\n");
 262         }
 263
 264 }
 265
 266 void print_macaddr (struct eth_device *dev)
 267 {
 268         int i, j, k, mac[6];
 269
 270         printf ("Current MAC Address in SMSC91111 ");
 271         SMC_SELECT_BANK (dev, 1);
 272         for (i = 0; i < 5; i++) {
 273                 printf ("%02x:", SMC_inb (dev, ADDR0_REG + i));
 274         }
 275
 276         printf ("%02x\n", SMC_inb (dev, ADDR0_REG + 5));
 277
 278         i = 0;
 279         for (j = 0x20; j < 0x23; j++) {
 280                 k = read_eeprom_reg (dev, j);
 281                 mac[i] = k & 0xFF;
 282                 i++;
 283                 mac[i] = k >> 8;
 284                 i++;
 285         }
 286
 287         printf ("Current MAC Address in EEPROM    ");
 288         for (i = 0; i < 5; i++)
 289                 printf ("%02x:", mac[i]);
 290         printf ("%02x\n", mac[5]);
 291
 292 }
 293 void dump_eeprom (struct eth_device *dev)
 294 {
 295         int j, k;
 296
 297         printf ("IOS2-0    ");
 298         for (j = 0; j < 8; j++) {
 299                 printf ("%03x     ", j);
 300         }
 301         printf ("\n");
 302
 303         for (k = 0; k < 4; k++) {
 304                 if (k == 0)
 305                         printf ("CONFIG ");
 306                 if (k == 1)
 307                         printf ("BASE   ");
 308                 if ((k == 2) || (k == 3))
 309                         printf ("       ");
 310                 for (j = 0; j < 0x20; j += 4) {
 311                         printf ("%02x:%04x ", j + k,
 312                                 read_eeprom_reg (dev, j + k));
 313                 }
 314                 printf ("\n");
 315         }
 316
 317         for (j = 0x20; j < 0x40; j++) {
 318                 if ((j & 0x07) == 0)
 319                         printf ("\n");
 320                 printf ("%02x:%04x ", j, read_eeprom_reg (dev, j));
 321         }
 322         printf ("\n");
 323
 324 }
 325
 326 int read_eeprom_reg (struct eth_device *dev, int reg)
 327 {
 328         int timeout;
 329
 330         SMC_SELECT_BANK (dev, 2);
 331         SMC_outw (dev, reg, PTR_REG);
 332
 333         SMC_SELECT_BANK (dev, 1);
 334         SMC_outw (dev, SMC_inw (dev, CTL_REG) | CTL_EEPROM_SELECT |
 335                 CTL_RELOAD, CTL_REG);
 336         timeout = 100;
 337         while ((SMC_inw (dev, CTL_REG) & CTL_RELOAD) && --timeout)
 338                 udelay (100);
 339         if (timeout == 0) {
 340                 printf ("Timeout Reading EEPROM register %02x\n", reg);
 341                 return 0;
 342         }
 343
 344         return SMC_inw (dev, GP_REG);
 345
 346 }
 347
 348 int write_eeprom_reg (struct eth_device *dev, int value, int reg)
 349 {
 350         int timeout;
 351
 352         SMC_SELECT_BANK (dev, 2);
 353         SMC_outw (dev, reg, PTR_REG);
 354
 355         SMC_SELECT_BANK (dev, 1);
 356         SMC_outw (dev, value, GP_REG);
 357         SMC_outw (dev, SMC_inw (dev, CTL_REG) | CTL_EEPROM_SELECT |
 358                 CTL_STORE, CTL_REG);
 359         timeout = 100;
 360         while ((SMC_inw (dev, 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 (struct eth_device *dev)
 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 (dev, j);
 384                         printf ("%04x  ", SMC_inw (dev, i));
 385                 }
 386                 printf ("\n");
 387         }
 388 }