board/hymod/bsp.c

   1 /*
   2  * (C) Copyright 2000
   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  * hacked for Hymod FPGA support by Murray.Jensen@csiro.au, 29-Jan-01
  24  */
  25
  26 #include <common.h>
  27 #include <command.h>
  28 #include <net.h>
  29 #include <asm/iopin_8260.h>
  30
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 /*-----------------------------------------------------------------------
  34  * Board Special Commands: FPGA load/store, EEPROM erase
  35  */
  36
  37 #if defined(CONFIG_CMD_BSP)
  38
  39 #define LOAD_SUCCESS            0
  40 #define LOAD_FAIL_NOCONF        1
  41 #define LOAD_FAIL_NOINIT        2
  42 #define LOAD_FAIL_NODONE        3
  43
  44 #define STORE_SUCCESS           0
  45
  46 /*
  47  * Programming the Hymod FPGAs
  48  *
  49  * The 8260 io port config table is set up so that the INIT pin is
  50  * held Low (Open Drain output 0) - this will delay the automatic
  51  * Power-On config until INIT is released (by making it an input).
  52  *
  53  * If the FPGA has been programmed before, then the assertion of PROGRAM
  54  * will initiate configuration (i.e. it begins clearing the RAM).
  55  *
  56  * When the FPGA is ready to receive configuration data (either after
  57  * releasing INIT after Power-On, or after asserting PROGRAM), it will
  58  * pull INIT high.
  59  *
  60  * Notes from Paul Dunn:
  61  *
  62  *  1. program pin should be forced low for >= 300ns
  63  *     (about 20 bus clock cycles minimum).
  64  *
  65  *  2. then wait for init to go high, which signals
  66  *     that the FPGA has cleared its internal memory
  67  *     and is ready to load
  68  *
  69  *  3. perform load writes of entire config file
  70  *
  71  *  4. wait for done to go high, which should be
  72  *     within a few bus clock cycles. If done has not
  73  *     gone high after reasonable period, then load
  74  *     has not worked (wait several ms?)
  75  */
  76
  77 int
  78 fpga_load (int mezz, uchar *addr, ulong size)
  79 {
  80         hymod_conf_t *cp = &gd->bd->bi_hymod_conf;
  81         xlx_info_t *fp;
  82         xlx_iopins_t *fpgaio;
  83         volatile uchar *fpgabase;
  84         volatile uint cnt;
  85         uchar *eaddr = addr + size;
  86         int result;
  87
  88         if (mezz)
  89                 fp = &cp->mezz.xlx[0];
  90         else
  91                 fp = &cp->main.xlx[0];
  92
  93         if (!fp->mmap.prog.exists)
  94                 return (LOAD_FAIL_NOCONF);
  95
  96         fpgabase = (uchar *)fp->mmap.prog.base;
  97         fpgaio = &fp->iopins;
  98
  99         /* set enable HIGH if required */
 100         if (fpgaio->enable_pin.flag)
 101                 iopin_set_high (&fpgaio->enable_pin);
 102
 103         /* ensure INIT is released (set it to be an input) */
 104         iopin_set_in (&fpgaio->init_pin);
 105
 106         /* toggle PROG Low then High (will already be Low after Power-On) */
 107         iopin_set_low (&fpgaio->prog_pin);
 108         udelay (1);     /* minimum 300ns - 1usec should do it */
 109         iopin_set_high (&fpgaio->prog_pin);
 110
 111         /* wait for INIT High */
 112         cnt = 0;
 113         while (!iopin_is_high (&fpgaio->init_pin))
 114                 if (++cnt == 10000000) {
 115                         result = LOAD_FAIL_NOINIT;
 116                         goto done;
 117                 }
 118
 119         /* write configuration data */
 120         while (addr < eaddr)
 121                 *fpgabase = *addr++;
 122
 123         /* wait for DONE High */
 124         cnt = 0;
 125         while (!iopin_is_high (&fpgaio->done_pin))
 126                 if (++cnt == 100000000) {
 127                         result = LOAD_FAIL_NODONE;
 128                         goto done;
 129                 }
 130
 131         /* success */
 132         result = LOAD_SUCCESS;
 133
 134   done:
 135
 136         if (fpgaio->enable_pin.flag)
 137                 iopin_set_low (&fpgaio->enable_pin);
 138
 139         return (result);
 140 }
 141
 142 /* ------------------------------------------------------------------------- */
 143 int
 144 do_fpga (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 145 {
 146         uchar *addr, *save_addr;
 147         ulong size;
 148         int mezz, arg, result;
 149
 150         switch (argc) {
 151
 152         case 0:
 153         case 1:
 154                 break;
 155
 156         case 2:
 157                 if (strcmp (argv[1], "info") == 0) {
 158                         printf ("\nHymod FPGA Info...\n");
 159                         printf ("\t\t\t\tAddress\t\tSize\n");
 160                         printf ("\tMain Configuration:\t0x%08x\t%d\n",
 161                                 FPGA_MAIN_CFG_BASE, FPGA_MAIN_CFG_SIZE);
 162                         printf ("\tMain Register:\t\t0x%08x\t%d\n",
 163                                 FPGA_MAIN_REG_BASE, FPGA_MAIN_REG_SIZE);
 164                         printf ("\tMain Port:\t\t0x%08x\t%d\n",
 165                                 FPGA_MAIN_PORT_BASE, FPGA_MAIN_PORT_SIZE);
 166                         printf ("\tMezz Configuration:\t0x%08x\t%d\n",
 167                                 FPGA_MEZZ_CFG_BASE, FPGA_MEZZ_CFG_SIZE);
 168                         return 0;
 169                 }
 170                 break;
 171
 172         case 3:
 173                 if (strcmp (argv[1], "store") == 0) {
 174                         addr = (uchar *) simple_strtoul (argv[2], NULL, 16);
 175
 176                         save_addr = addr;
 177 #if 0
 178                         /* fpga readback unimplemented */
 179                         while (more readback data)
 180                                 *addr++ = *fpga;
 181                         result = error ? STORE_FAIL_XXX : STORE_SUCCESS;
 182 #else
 183                         result = STORE_SUCCESS;
 184 #endif
 185
 186                         if (result == STORE_SUCCESS) {
 187                                 printf ("SUCCEEDED (%d bytes)\n",
 188                                         addr - save_addr);
 189                                 return 0;
 190                         } else
 191                                 printf ("FAILED (%d bytes)\n",
 192                                         addr - save_addr);
 193                         return 1;
 194                 }
 195                 break;
 196
 197         case 4:
 198                 if (strcmp (argv[1], "tftp") == 0) {
 199                         copy_filename (BootFile, argv[2], sizeof (BootFile));
 200                         load_addr = simple_strtoul (argv[3], NULL, 16);
 201                         NetBootFileXferSize = 0;
 202
 203                         if (NetLoop (TFTP) <= 0) {
 204                                 printf ("tftp transfer failed - aborting "
 205                                         "fgpa load\n");
 206                                 return 1;
 207                         }
 208
 209                         if (NetBootFileXferSize == 0) {
 210                                 printf ("can't determine file size - "
 211                                         "aborting fpga load\n");
 212                                 return 1;
 213                         }
 214
 215                         printf ("File transfer succeeded - "
 216                                 "beginning fpga load...");
 217
 218                         result = fpga_load (0, (uchar *) load_addr,
 219                                 NetBootFileXferSize);
 220
 221                         if (result == LOAD_SUCCESS) {
 222                                 printf ("SUCCEEDED\n");
 223                                 return 0;
 224                         } else if (result == LOAD_FAIL_NOCONF)
 225                                 printf ("FAILED (no CONF)\n");
 226                         else if (result == LOAD_FAIL_NOINIT)
 227                                 printf ("FAILED (no INIT)\n");
 228                         else
 229                                 printf ("FAILED (no DONE)\n");
 230                         return 1;
 231
 232                 }
 233                 /* fall through ... */
 234
 235         case 5:
 236                 if (strcmp (argv[1], "load") == 0) {
 237                         if (argc == 5) {
 238                                 if (strcmp (argv[2], "main") == 0)
 239                                         mezz = 0;
 240                                 else if (strcmp (argv[2], "mezz") == 0)
 241                                         mezz = 1;
 242                                 else {
 243                                         printf ("FPGA type must be either "
 244                                                 "`main' or `mezz'\n");
 245                                         return 1;
 246                                 }
 247                                 arg = 3;
 248                         } else {
 249                                 mezz = 0;
 250                                 arg = 2;
 251                         }
 252
 253                         addr = (uchar *) simple_strtoul (argv[arg++], NULL, 16);
 254                         size = (ulong) simple_strtoul (argv[arg], NULL, 16);
 255
 256                         result = fpga_load (mezz, addr, size);
 257
 258                         if (result == LOAD_SUCCESS) {
 259                                 printf ("SUCCEEDED\n");
 260                                 return 0;
 261                         } else if (result == LOAD_FAIL_NOCONF)
 262                                 printf ("FAILED (no CONF)\n");
 263                         else if (result == LOAD_FAIL_NOINIT)
 264                                 printf ("FAILED (no INIT)\n");
 265                         else
 266                                 printf ("FAILED (no DONE)\n");
 267                         return 1;
 268                 }
 269                 break;
 270
 271         default:
 272                 break;
 273         }
 274
 275         return cmd_usage(cmdtp);
 276 }
 277 U_BOOT_CMD(
 278         fpga,   6,      1,      do_fpga,
 279         "FPGA sub-system",
 280         "load [type] addr size\n"
 281         "  - write the configuration data at memory address `addr',\n"
 282         "    size `size' bytes, into the FPGA of type `type' (either\n"
 283         "    `main' or `mezz', default `main'). e.g.\n"
 284         "        `fpga load 100000 7d8f'\n"
 285         "    loads the main FPGA with config data at address 100000\n"
 286         "    HEX, size 7d8f HEX (32143 DEC) bytes\n"
 287         "fpga tftp file addr\n"
 288         "  - transfers `file' from the tftp server into memory at\n"
 289         "    address `addr', then writes the entire file contents\n"
 290         "    into the main FPGA\n"
 291         "fpga store addr\n"
 292         "  - read configuration data from the main FPGA (the mezz\n"
 293         "    FPGA is write-only), into address `addr'. There must be\n"
 294         "    enough memory available at `addr' to hold all the config\n"
 295         "    data - the size of which is determined by VC:???\n"
 296         "fpga info\n"
 297         "  - print information about the Hymod FPGA, namely the\n"
 298         "    memory addresses at which the four FPGA local bus\n"
 299         "    address spaces appear in the physical address space"
 300 );
 301 /* ------------------------------------------------------------------------- */
 302 int
 303 do_eecl (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 304 {
 305         uchar data[HYMOD_EEPROM_SIZE];
 306         uint addr = CONFIG_SYS_I2C_EEPROM_ADDR;
 307
 308         switch (argc) {
 309
 310         case 1:
 311                 addr |= HYMOD_EEOFF_MAIN;
 312                 break;
 313
 314         case 2:
 315                 if (strcmp (argv[1], "main") == 0) {
 316                         addr |= HYMOD_EEOFF_MAIN;
 317                         break;
 318                 }
 319                 if (strcmp (argv[1], "mezz") == 0) {
 320                         addr |= HYMOD_EEOFF_MEZZ;
 321                         break;
 322                 }
 323                 /* fall through ... */
 324
 325         default:
 326                 return cmd_usage(cmdtp);
 327         }
 328
 329         memset (data, 0, HYMOD_EEPROM_SIZE);
 330
 331         eeprom_write (addr, 0, data, HYMOD_EEPROM_SIZE);
 332
 333         return 0;
 334 }
 335 U_BOOT_CMD(
 336         eeclear,        1,      0,      do_eecl,
 337         "Clear the eeprom on a Hymod board",
 338         "[type]\n"
 339         "  - write zeroes into the EEPROM on the board of type `type'\n"
 340         "    (`type' is either `main' or `mezz' - default `main')\n"
 341         "    Note: the EEPROM write enable jumper must be installed"
 342 );
 343
 344 /* ------------------------------------------------------------------------- */
 345
 346 int
 347 do_htest (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 348 {
 349 #if 0
 350         int rc;
 351 #endif
 352 #ifdef CONFIG_ETHER_LOOPBACK_TEST
 353         extern void eth_loopback_test (void);
 354 #endif /* CONFIG_ETHER_LOOPBACK_TEST */
 355
 356         printf ("HYMOD tests - ensure loopbacks etc. are connected\n\n");
 357
 358 #if 0
 359         /* Load FPGA with test program */
 360
 361         printf ("Loading test FPGA program ...");
 362
 363         rc = fpga_load (0, test_bitfile, sizeof (test_bitfile));
 364
 365         switch (rc) {
 366
 367         case LOAD_SUCCESS:
 368                 printf (" SUCCEEDED\n");
 369                 break;
 370
 371         case LOAD_FAIL_NOCONF:
 372                 printf (" FAILED (no configuration space defined)\n");
 373                 return 1;
 374
 375         case LOAD_FAIL_NOINIT:
 376                 printf (" FAILED (timeout - no INIT signal seen)\n");
 377                 return 1;
 378
 379         case LOAD_FAIL_NODONE:
 380                 printf (" FAILED (timeout - no DONE signal seen)\n");
 381                 return 1;
 382
 383         default:
 384                 printf (" FAILED (unknown return code from fpga_load\n");
 385                 return 1;
 386         }
 387
 388         /* run Local Bus <=> Xilinx tests */
 389
 390         /* tell Xilinx to run ZBT Ram, High Speed serial and Mezzanine tests */
 391
 392         /* run SDRAM test */
 393 #endif
 394
 395 #ifdef CONFIG_ETHER_LOOPBACK_TEST
 396         /* run Ethernet test */
 397         eth_loopback_test ();
 398 #endif /* CONFIG_ETHER_LOOPBACK_TEST */
 399
 400         return 0;
 401 }
 402
 403 #endif