lib_m68k/board.c

   1 /*
   2  * (C) Copyright 2003
   3  * Josef Baumgartner <josef.baumgartner@telex.de>
   4  *
   5  * (C) Copyright 2000-2002
   6  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 #include <common.h>
  28 #include <watchdog.h>
  29 #include <command.h>
  30 #include <malloc.h>
  31 #include <devices.h>
  32
  33 #include <asm/immap.h>
  34
  35 #if defined(CONFIG_CMD_IDE)
  36 #include <ide.h>
  37 #endif
  38 #if defined(CONFIG_CMD_SCSI)
  39 #include <scsi.h>
  40 #endif
  41 #if defined(CONFIG_CMD_KGDB)
  42 #include <kgdb.h>
  43 #endif
  44 #ifdef CONFIG_STATUS_LED
  45 #include <status_led.h>
  46 #endif
  47 #include <net.h>
  48 #if defined(CONFIG_CMD_BEDBUG)
  49 #include <cmd_bedbug.h>
  50 #endif
  51 #ifdef CFG_ALLOC_DPRAM
  52 #include <commproc.h>
  53 #endif
  54 #include <version.h>
  55
  56 #if defined(CONFIG_HARD_I2C) || \
  57     defined(CONFIG_SOFT_I2C)
  58 #include <i2c.h>
  59 #endif
  60
  61 DECLARE_GLOBAL_DATA_PTR;
  62
  63 static char *failed = "*** failed ***\n";
  64
  65 #ifdef  CONFIG_PCU_E
  66 extern flash_info_t flash_info[];
  67 #endif
  68
  69 #include <environment.h>
  70
  71 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
  72       (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
  73     defined(CFG_ENV_IS_IN_NVRAM)
  74 #define TOTAL_MALLOC_LEN        (CFG_MALLOC_LEN + CFG_ENV_SIZE)
  75 #else
  76 #define TOTAL_MALLOC_LEN        CFG_MALLOC_LEN
  77 #endif
  78
  79 extern ulong __init_end;
  80 extern ulong _end;
  81
  82 extern  void timer_init(void);
  83
  84 #if defined(CONFIG_WATCHDOG)
  85 # define INIT_FUNC_WATCHDOG_INIT        watchdog_init,
  86 # define WATCHDOG_DISABLE               watchdog_disable
  87
  88 extern int watchdog_init(void);
  89 extern int watchdog_disable(void);
  90 #else
  91 # define INIT_FUNC_WATCHDOG_INIT        /* undef */
  92 # define WATCHDOG_DISABLE               /* undef */
  93 #endif /* CONFIG_WATCHDOG */
  94
  95 ulong monitor_flash_len;
  96
  97 /*
  98  * Begin and End of memory area for malloc(), and current "brk"
  99  */
 100 static  ulong   mem_malloc_start = 0;
 101 static  ulong   mem_malloc_end   = 0;
 102 static  ulong   mem_malloc_brk   = 0;
 103
 104 /************************************************************************
 105  * Utilities                                                            *
 106  ************************************************************************
 107  */
 108
 109 /*
 110  * The Malloc area is immediately below the monitor copy in DRAM
 111  */
 112 static void mem_malloc_init (void)
 113 {
 114         ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
 115
 116         mem_malloc_end = dest_addr;
 117         mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
 118         mem_malloc_brk = mem_malloc_start;
 119
 120         memset ((void *) mem_malloc_start,
 121                 0,
 122                 mem_malloc_end - mem_malloc_start);
 123 }
 124
 125 void *sbrk (ptrdiff_t increment)
 126 {
 127         ulong old = mem_malloc_brk;
 128         ulong new = old + increment;
 129
 130         if ((new < mem_malloc_start) ||
 131             (new > mem_malloc_end) ) {
 132                 return (NULL);
 133         }
 134         mem_malloc_brk = new;
 135         return ((void *)old);
 136 }
 137
 138 char *strmhz(char *buf, long hz)
 139 {
 140         long l, n;
 141         long m;
 142
 143         n = hz / 1000000L;
 144
 145         l = sprintf (buf, "%ld", n);
 146
 147         m = (hz % 1000000L) / 1000L;
 148
 149         if (m != 0)
 150                 sprintf (buf+l, ".%03ld", m);
 151
 152         return (buf);
 153 }
 154
 155 /*
 156  * All attempts to come up with a "common" initialization sequence
 157  * that works for all boards and architectures failed: some of the
 158  * requirements are just _too_ different. To get rid of the resulting
 159  * mess of board dependend #ifdef'ed code we now make the whole
 160  * initialization sequence configurable to the user.
 161  *
 162  * The requirements for any new initalization function is simple: it
 163  * receives a pointer to the "global data" structure as it's only
 164  * argument, and returns an integer return code, where 0 means
 165  * "continue" and != 0 means "fatal error, hang the system".
 166  */
 167 typedef int (init_fnc_t) (void);
 168
 169 /************************************************************************
 170  * Init Utilities
 171  ************************************************************************
 172  * Some of this code should be moved into the core functions,
 173  * but let's get it working (again) first...
 174  */
 175
 176 static int init_baudrate (void)
 177 {
 178         uchar tmp[64];  /* long enough for environment variables */
 179         int i = getenv_r ("baudrate", tmp, sizeof (tmp));
 180
 181         gd->baudrate = (i > 0)
 182                         ? (int) simple_strtoul (tmp, NULL, 10)
 183                         : CONFIG_BAUDRATE;
 184         return (0);
 185 }
 186
 187 /***********************************************************************/
 188
 189 static int init_func_ram (void)
 190 {
 191         int board_type = 0;     /* use dummy arg */
 192         puts ("DRAM:  ");
 193
 194         if ((gd->ram_size = initdram (board_type)) > 0) {
 195                 print_size (gd->ram_size, "\n");
 196                 return (0);
 197         }
 198         puts (failed);
 199         return (1);
 200 }
 201
 202 /***********************************************************************/
 203
 204 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 205 static int init_func_i2c (void)
 206 {
 207         puts ("I2C:   ");
 208         i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
 209         puts ("ready\n");
 210         return (0);
 211 }
 212 #endif
 213
 214 /***********************************************************************/
 215
 216 /************************************************************************
 217  * Initialization sequence                                              *
 218  ************************************************************************
 219  */
 220
 221 init_fnc_t *init_sequence[] = {
 222         get_clocks,
 223         env_init,
 224         init_baudrate,
 225         serial_init,
 226         console_init_f,
 227         display_options,
 228         checkcpu,
 229         checkboard,
 230 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 231         init_func_i2c,
 232 #endif
 233         init_func_ram,
 234 #if defined(CFG_DRAM_TEST)
 235         testdram,
 236 #endif /* CFG_DRAM_TEST */
 237         INIT_FUNC_WATCHDOG_INIT
 238         NULL,                   /* Terminate this list */
 239 };
 240
 241
 242 /************************************************************************
 243  *
 244  * This is the first part of the initialization sequence that is
 245  * implemented in C, but still running from ROM.
 246  *
 247  * The main purpose is to provide a (serial) console interface as
 248  * soon as possible (so we can see any error messages), and to
 249  * initialize the RAM so that we can relocate the monitor code to
 250  * RAM.
 251  *
 252  * Be aware of the restrictions: global data is read-only, BSS is not
 253  * initialized, and stack space is limited to a few kB.
 254  *
 255  ************************************************************************
 256  */
 257
 258 void
 259 board_init_f (ulong bootflag)
 260 {
 261         bd_t *bd;
 262         ulong len, addr, addr_sp;
 263         ulong *paddr;
 264         gd_t *id;
 265         init_fnc_t **init_fnc_ptr;
 266 #ifdef CONFIG_PRAM
 267         int i;
 268         ulong reg;
 269         uchar tmp[64];          /* long enough for environment variables */
 270 #endif
 271
 272         /* Pointer is writable since we allocated a register for it */
 273         gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
 274         /* compiler optimization barrier needed for GCC >= 3.4 */
 275         __asm__ __volatile__("": : :"memory");
 276
 277         /* Clear initial global data */
 278         memset ((void *) gd, 0, sizeof (gd_t));
 279
 280         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 281                 if ((*init_fnc_ptr)() != 0) {
 282                         hang ();
 283                 }
 284         }
 285
 286         /*
 287          * Now that we have DRAM mapped and working, we can
 288          * relocate the code and continue running from DRAM.
 289          *
 290          * Reserve memory at end of RAM for (top down in that order):
 291          *      - protected RAM
 292          *      - LCD framebuffer
 293          *      - monitor code
 294          *      - board info struct
 295          */
 296         len = (ulong)&_end - CFG_MONITOR_BASE;
 297
 298         addr = CFG_SDRAM_BASE + gd->ram_size;
 299
 300 #ifdef CONFIG_LOGBUFFER
 301         /* reserve kernel log buffer */
 302         addr -= (LOGBUFF_RESERVE);
 303         debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
 304 #endif
 305
 306 #ifdef CONFIG_PRAM
 307         /*
 308          * reserve protected RAM
 309          */
 310         i = getenv_r ("pram", tmp, sizeof (tmp));
 311         reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
 312         addr -= (reg << 10);            /* size is in kB */
 313         debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
 314 #endif /* CONFIG_PRAM */
 315
 316         /*
 317          * reserve memory for U-Boot code, data & bss
 318          * round down to next 4 kB limit
 319          */
 320         addr -= len;
 321         addr &= ~(4096 - 1);
 322
 323         debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
 324
 325         /*
 326          * reserve memory for malloc() arena
 327          */
 328         addr_sp = addr - TOTAL_MALLOC_LEN;
 329         debug ("Reserving %dk for malloc() at: %08lx\n",
 330                         TOTAL_MALLOC_LEN >> 10, addr_sp);
 331
 332         /*
 333          * (permanently) allocate a Board Info struct
 334          * and a permanent copy of the "global" data
 335          */
 336         addr_sp -= sizeof (bd_t);
 337         bd = (bd_t *) addr_sp;
 338         gd->bd = bd;
 339         debug ("Reserving %d Bytes for Board Info at: %08lx\n",
 340                         sizeof (bd_t), addr_sp);
 341         addr_sp -= sizeof (gd_t);
 342         id = (gd_t *) addr_sp;
 343         debug ("Reserving %d Bytes for Global Data at: %08lx\n",
 344                         sizeof (gd_t), addr_sp);
 345
 346         /* Reserve memory for boot params. */
 347         addr_sp -= CFG_BOOTPARAMS_LEN;
 348         bd->bi_boot_params = addr_sp;
 349         debug ("Reserving %dk for boot parameters at: %08lx\n",
 350                         CFG_BOOTPARAMS_LEN >> 10, addr_sp);
 351
 352         /*
 353          * Finally, we set up a new (bigger) stack.
 354          *
 355          * Leave some safety gap for SP, force alignment on 16 byte boundary
 356          * Clear initial stack frame
 357          */
 358         addr_sp -= 16;
 359         addr_sp &= ~0xF;
 360
 361         paddr = (ulong *)addr_sp;
 362         *paddr-- = 0;
 363         *paddr-- = 0;
 364         addr_sp = (ulong)paddr;
 365
 366         debug ("Stack Pointer at: %08lx\n", addr_sp);
 367
 368         /*
 369          * Save local variables to board info struct
 370          */
 371         bd->bi_memstart  = CFG_SDRAM_BASE;      /* start of  DRAM memory      */
 372         bd->bi_memsize   = gd->ram_size;        /* size  of  DRAM memory in bytes */
 373 #ifdef CFG_INIT_RAM_ADDR
 374         bd->bi_sramstart = CFG_INIT_RAM_ADDR;   /* start of  SRAM memory        */
 375         bd->bi_sramsize  = CFG_INIT_RAM_END;    /* size  of  SRAM memory        */
 376 #endif
 377         bd->bi_mbar_base = CFG_MBAR;            /* base of internal registers */
 378
 379         bd->bi_bootflags = bootflag;            /* boot / reboot flag (for LynxOS)    */
 380
 381         WATCHDOG_RESET ();
 382         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 383         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 384 #ifdef CONFIG_PCI
 385         bd->bi_pcifreq = gd->pci_clk;           /* PCI Freq in Hz */
 386 #endif
 387 #ifdef CONFIG_EXTRA_CLOCK
 388         bd->bi_inpfreq = gd->inp_clk;           /* input Freq in Hz */
 389         bd->bi_vcofreq = gd->vco_clk;           /* vco Freq in Hz */
 390         bd->bi_flbfreq = gd->flb_clk;           /* flexbus Freq in Hz */
 391 #endif
 392         bd->bi_baudrate = gd->baudrate; /* Console Baudrate     */
 393
 394 #ifdef CFG_EXTBDINFO
 395         strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
 396         strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
 397 #endif
 398
 399         WATCHDOG_RESET ();
 400
 401 #ifdef CONFIG_POST
 402         post_bootmode_init();
 403         post_run (NULL, POST_ROM | post_bootmode_get(0));
 404 #endif
 405
 406         WATCHDOG_RESET();
 407
 408         memcpy (id, (void *)gd, sizeof (gd_t));
 409
 410         debug ("Start relocate of code from %08x to %08lx\n", CFG_MONITOR_BASE, addr);
 411         relocate_code (addr_sp, id, addr);
 412
 413         /* NOTREACHED - jump_to_ram() does not return */
 414 }
 415
 416 /************************************************************************
 417  *
 418  * This is the next part if the initialization sequence: we are now
 419  * running from RAM and have a "normal" C environment, i. e. global
 420  * data can be written, BSS has been cleared, the stack size in not
 421  * that critical any more, etc.
 422  *
 423  ************************************************************************
 424  */
 425 void board_init_r (gd_t *id, ulong dest_addr)
 426 {
 427         cmd_tbl_t *cmdtp;
 428         char *s, *e;
 429         bd_t *bd;
 430         int i;
 431         extern void malloc_bin_reloc (void);
 432
 433 #ifndef CFG_ENV_IS_NOWHERE
 434         extern char * env_name_spec;
 435 #endif
 436 #ifndef CFG_NO_FLASH
 437         ulong flash_size;
 438 #endif
 439         gd = id;                /* initialize RAM version of global data */
 440         bd = gd->bd;
 441
 442         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 443
 444 #ifdef CONFIG_SERIAL_MULTI
 445         serial_initialize();
 446 #endif
 447
 448         debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
 449
 450         WATCHDOG_RESET ();
 451
 452         gd->reloc_off =  dest_addr - CFG_MONITOR_BASE;
 453
 454         monitor_flash_len = (ulong)&__init_end - dest_addr;
 455
 456         /*
 457          * We have to relocate the command table manually
 458          */
 459         for (cmdtp = &__u_boot_cmd_start; cmdtp !=  &__u_boot_cmd_end; cmdtp++) {
 460                 ulong addr;
 461                 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
 462 #if 0
 463                 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
 464                                 cmdtp->name, (ulong) (cmdtp->cmd), addr);
 465 #endif
 466                 cmdtp->cmd =
 467                         (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
 468
 469                 addr = (ulong)(cmdtp->name) + gd->reloc_off;
 470                 cmdtp->name = (char *)addr;
 471
 472                 if (cmdtp->usage) {
 473                         addr = (ulong)(cmdtp->usage) + gd->reloc_off;
 474                         cmdtp->usage = (char *)addr;
 475                 }
 476 #ifdef  CFG_LONGHELP
 477                 if (cmdtp->help) {
 478                         addr = (ulong)(cmdtp->help) + gd->reloc_off;
 479                         cmdtp->help = (char *)addr;
 480                 }
 481 #endif
 482         }
 483         /* there are some other pointer constants we must deal with */
 484 #ifndef CFG_ENV_IS_NOWHERE
 485         env_name_spec += gd->reloc_off;
 486 #endif
 487
 488         WATCHDOG_RESET ();
 489
 490 #ifdef CONFIG_LOGBUFFER
 491         logbuff_init_ptrs ();
 492 #endif
 493 #ifdef CONFIG_POST
 494         post_output_backlog ();
 495         post_reloc ();
 496 #endif
 497         WATCHDOG_RESET();
 498
 499 #if 0
 500         /* instruction cache enabled in cpu_init_f() for faster relocation */
 501         icache_enable ();       /* it's time to enable the instruction cache */
 502 #endif
 503
 504         /*
 505          * Setup trap handlers
 506          */
 507         trap_init (CFG_SDRAM_BASE);
 508
 509 #if !defined(CFG_NO_FLASH)
 510         puts ("FLASH: ");
 511
 512         if ((flash_size = flash_init ()) > 0) {
 513 # ifdef CFG_FLASH_CHECKSUM
 514                 print_size (flash_size, "");
 515                 /*
 516                  * Compute and print flash CRC if flashchecksum is set to 'y'
 517                  *
 518                  * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 519                  */
 520                 s = getenv ("flashchecksum");
 521                 if (s && (*s == 'y')) {
 522                         printf ("  CRC: %08lX",
 523                                         crc32 (0,
 524                                                    (const unsigned char *) CFG_FLASH_BASE,
 525                                                    flash_size)
 526                                         );
 527                 }
 528                 putc ('\n');
 529 # else  /* !CFG_FLASH_CHECKSUM */
 530                 print_size (flash_size, "\n");
 531 # endif /* CFG_FLASH_CHECKSUM */
 532         } else {
 533                 puts (failed);
 534                 hang ();
 535         }
 536
 537         bd->bi_flashstart = CFG_FLASH_BASE;     /* update start of FLASH memory    */
 538         bd->bi_flashsize = flash_size;  /* size of FLASH memory (final value) */
 539         bd->bi_flashoffset = 0;
 540 #else   /* CFG_NO_FLASH */
 541         bd->bi_flashsize = 0;
 542         bd->bi_flashstart = 0;
 543         bd->bi_flashoffset = 0;
 544 #endif /* !CFG_NO_FLASH */
 545
 546         WATCHDOG_RESET ();
 547
 548         /* initialize higher level parts of CPU like time base and timers */
 549         cpu_init_r ();
 550
 551         WATCHDOG_RESET ();
 552
 553         /* initialize malloc() area */
 554         mem_malloc_init ();
 555         malloc_bin_reloc ();
 556
 557 #ifdef CONFIG_SPI
 558 # if !defined(CFG_ENV_IS_IN_EEPROM)
 559         spi_init_f ();
 560 # endif
 561         spi_init_r ();
 562 #endif
 563
 564         /* relocate environment function pointers etc. */
 565         env_relocate ();
 566
 567         /*
 568          * Fill in missing fields of bd_info.
 569          * We do this here, where we have "normal" access to the
 570          * environment; we used to do this still running from ROM,
 571          * where had to use getenv_r(), which can be pretty slow when
 572          * the environment is in EEPROM.
 573          */
 574         s = getenv ("ethaddr");
 575         for (i = 0; i < 6; ++i) {
 576                 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 577                 if (s)
 578                         s = (*e) ? e + 1 : e;
 579         }
 580 #ifdef CONFIG_HAS_ETH1
 581         /* handle the 2nd ethernet address */
 582
 583         s = getenv ("eth1addr");
 584         for (i = 0; i < 6; ++i) {
 585                 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 586                 if (s)
 587                         s = (*e) ? e + 1 : e;
 588         }
 589 #endif
 590 #ifdef CONFIG_HAS_ETH2
 591         /* handle the 3rd ethernet address */
 592
 593         s = getenv ("eth2addr");
 594         for (i = 0; i < 6; ++i) {
 595                 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 596                 if (s)
 597                         s = (*e) ? e + 1 : e;
 598         }
 599 #endif
 600
 601 #ifdef CONFIG_HAS_ETH3
 602         /* handle 4th ethernet address */
 603         s = getenv("eth3addr");
 604         for (i = 0; i < 6; ++i) {
 605                 bd->bi_enet3addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 606                 if (s)
 607                         s = (*e) ? e + 1 : e;
 608         }
 609 #endif
 610
 611         /* IP Address */
 612         bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 613
 614         WATCHDOG_RESET ();
 615
 616 #if defined(CONFIG_PCI)
 617         /*
 618          * Do pci configuration
 619          */
 620         pci_init ();
 621 #endif
 622
 623         /** leave this here (after malloc(), environment and PCI are working) **/
 624         /* Initialize devices */
 625         devices_init ();
 626
 627         /* Initialize the jump table for applications */
 628         jumptable_init ();
 629
 630         /* Initialize the console (after the relocation and devices init) */
 631         console_init_r ();
 632
 633 #if defined(CONFIG_MISC_INIT_R)
 634         /* miscellaneous platform dependent initialisations */
 635         misc_init_r ();
 636 #endif
 637
 638 #if defined(CONFIG_CMD_KGDB)
 639         WATCHDOG_RESET ();
 640         puts ("KGDB:  ");
 641         kgdb_init ();
 642 #endif
 643
 644         debug ("U-Boot relocated to %08lx\n", dest_addr);
 645
 646         /*
 647          * Enable Interrupts
 648          */
 649         interrupt_init ();
 650
 651         /* Must happen after interrupts are initialized since
 652          * an irq handler gets installed
 653          */
 654         timer_init();
 655
 656 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 657         serial_buffered_init();
 658 #endif
 659
 660 #ifdef CONFIG_STATUS_LED
 661         status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
 662 #endif
 663
 664         udelay (20);
 665
 666         set_timer (0);
 667
 668         /* Insert function pointers now that we have relocated the code */
 669
 670         /* Initialize from environment */
 671         if ((s = getenv ("loadaddr")) != NULL) {
 672                 load_addr = simple_strtoul (s, NULL, 16);
 673         }
 674 #if defined(CONFIG_CMD_NET)
 675         if ((s = getenv ("bootfile")) != NULL) {
 676                 copy_filename (BootFile, s, sizeof (BootFile));
 677         }
 678 #endif
 679
 680         WATCHDOG_RESET ();
 681
 682 #if defined(CONFIG_CMD_DOC)
 683         WATCHDOG_RESET ();
 684         puts ("DOC:   ");
 685         doc_init ();
 686 #endif
 687
 688 #if defined(CONFIG_CMD_NAND)
 689         WATCHDOG_RESET ();
 690         puts ("NAND:  ");
 691         nand_init();            /* go init the NAND */
 692 #endif
 693
 694 #if defined(CONFIG_CMD_NET)
 695         WATCHDOG_RESET();
 696 #if defined(FEC_ENET)
 697         eth_init(bd);
 698 #endif
 699 #if defined(CONFIG_NET_MULTI)
 700         puts ("Net:   ");
 701         eth_initialize (bd);
 702 #endif
 703 #endif
 704
 705 #ifdef CONFIG_POST
 706         post_run (NULL, POST_RAM | post_bootmode_get(0));
 707 #endif
 708
 709 #if defined(CONFIG_CMD_PCMCIA) \
 710     && !defined(CONFIG_CMD_IDE)
 711         WATCHDOG_RESET ();
 712         puts ("PCMCIA:");
 713         pcmcia_init ();
 714 #endif
 715
 716 #if defined(CONFIG_CMD_IDE)
 717         WATCHDOG_RESET ();
 718         puts ("IDE:   ");
 719         ide_init ();
 720 #endif
 721
 722 #ifdef CONFIG_LAST_STAGE_INIT
 723         WATCHDOG_RESET ();
 724         /*
 725          * Some parts can be only initialized if all others (like
 726          * Interrupts) are up and running (i.e. the PC-style ISA
 727          * keyboard).
 728          */
 729         last_stage_init ();
 730 #endif
 731
 732 #if defined(CONFIG_CMD_BEDBUG)
 733         WATCHDOG_RESET ();
 734         bedbug_init ();
 735 #endif
 736
 737 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
 738         /*
 739          * Export available size of memory for Linux,
 740          * taking into account the protected RAM at top of memory
 741          */
 742         {
 743                 ulong pram;
 744                 uchar memsz[32];
 745 #ifdef CONFIG_PRAM
 746                 char *s;
 747
 748                 if ((s = getenv ("pram")) != NULL) {
 749                         pram = simple_strtoul (s, NULL, 10);
 750                 } else {
 751                         pram = CONFIG_PRAM;
 752                 }
 753 #else
 754                 pram=0;
 755 #endif
 756 #ifdef CONFIG_LOGBUFFER
 757                 /* Also take the logbuffer into account (pram is in kB) */
 758                 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
 759 #endif
 760                 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
 761                 setenv ("mem", memsz);
 762         }
 763 #endif
 764
 765 #ifdef CONFIG_MODEM_SUPPORT
 766  {
 767          extern int do_mdm_init;
 768          do_mdm_init = gd->do_mdm_init;
 769  }
 770 #endif
 771
 772 #ifdef CONFIG_WATCHDOG
 773         /* disable watchdog if environment is set */
 774         if ((s = getenv ("watchdog")) != NULL) {
 775                 if (strncmp (s, "off", 3) == 0) {
 776                         WATCHDOG_DISABLE ();
 777                 }
 778         }
 779 #endif /* CONFIG_WATCHDOG*/
 780
 781
 782         /* Initialization complete - start the monitor */
 783
 784         /* main_loop() can return to retry autoboot, if so just run it again. */
 785         for (;;) {
 786                 WATCHDOG_RESET ();
 787                 main_loop ();
 788         }
 789
 790         /* NOTREACHED - no way out of command loop except booting */
 791 }
 792
 793
 794 void hang(void)
 795 {
 796         puts ("### ERROR ### Please RESET the board ###\n");
 797         for (;;);
 798 }