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 #ifdef  CONFIG_M5272
  34 #include <asm/immap_5272.h>
  35 #endif
  36
  37 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
  38 #include <ide.h>
  39 #endif
  40 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
  41 #include <scsi.h>
  42 #endif
  43 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
  44 #include <kgdb.h>
  45 #endif
  46 #ifdef CONFIG_STATUS_LED
  47 #include <status_led.h>
  48 #endif
  49 #include <net.h>
  50 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
  51 #include <cmd_bedbug.h>
  52 #endif
  53 #ifdef CFG_ALLOC_DPRAM
  54 #include <commproc.h>
  55 #endif
  56 #include <version.h>
  57
  58 #if defined(CONFIG_HARD_I2C) || \
  59     defined(CONFIG_SOFT_I2C)
  60 #include <i2c.h>
  61 #endif
  62
  63 DECLARE_GLOBAL_DATA_PTR;
  64
  65 static char *failed = "*** failed ***\n";
  66
  67 #ifdef  CONFIG_PCU_E
  68 extern flash_info_t flash_info[];
  69 #endif
  70
  71 #include <environment.h>
  72
  73 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
  74       (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
  75     defined(CFG_ENV_IS_IN_NVRAM)
  76 #define TOTAL_MALLOC_LEN        (CFG_MALLOC_LEN + CFG_ENV_SIZE)
  77 #else
  78 #define TOTAL_MALLOC_LEN        CFG_MALLOC_LEN
  79 #endif
  80
  81 extern ulong __init_end;
  82 extern ulong _end;
  83
  84 extern  void timer_init(void);
  85
  86 #if defined(CONFIG_WATCHDOG)
  87 # define INIT_FUNC_WATCHDOG_INIT        watchdog_init,
  88 # define WATCHDOG_DISABLE               watchdog_disable
  89
  90 extern int watchdog_init(void);
  91 extern int watchdog_disable(void);
  92 #else
  93 # define INIT_FUNC_WATCHDOG_INIT        /* undef */
  94 # define WATCHDOG_DISABLE               /* undef */
  95 #endif /* CONFIG_WATCHDOG */
  96
  97 ulong monitor_flash_len;
  98
  99 /*
 100  * Begin and End of memory area for malloc(), and current "brk"
 101  */
 102 static  ulong   mem_malloc_start = 0;
 103 static  ulong   mem_malloc_end   = 0;
 104 static  ulong   mem_malloc_brk   = 0;
 105
 106 /************************************************************************
 107  * Utilities                                                            *
 108  ************************************************************************
 109  */
 110
 111 /*
 112  * The Malloc area is immediately below the monitor copy in DRAM
 113  */
 114 static void mem_malloc_init (void)
 115 {
 116         ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
 117
 118         mem_malloc_end = dest_addr;
 119         mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
 120         mem_malloc_brk = mem_malloc_start;
 121
 122         memset ((void *) mem_malloc_start,
 123                 0,
 124                 mem_malloc_end - mem_malloc_start);
 125 }
 126
 127 void *sbrk (ptrdiff_t increment)
 128 {
 129         ulong old = mem_malloc_brk;
 130         ulong new = old + increment;
 131
 132         if ((new < mem_malloc_start) ||
 133             (new > mem_malloc_end) ) {
 134                 return (NULL);
 135         }
 136         mem_malloc_brk = new;
 137         return ((void *)old);
 138 }
 139
 140 char *strmhz(char *buf, long hz)
 141 {
 142     long l, n;
 143     long m;
 144
 145     n = hz / 1000000L;
 146
 147     l = sprintf (buf, "%ld", n);
 148
 149     m = (hz % 1000000L) / 1000L;
 150
 151     if (m != 0)
 152         sprintf (buf+l, ".%03ld", m);
 153
 154     return (buf);
 155 }
 156
 157 /*
 158  * All attempts to come up with a "common" initialization sequence
 159  * that works for all boards and architectures failed: some of the
 160  * requirements are just _too_ different. To get rid of the resulting
 161  * mess of board dependend #ifdef'ed code we now make the whole
 162  * initialization sequence configurable to the user.
 163  *
 164  * The requirements for any new initalization function is simple: it
 165  * receives a pointer to the "global data" structure as it's only
 166  * argument, and returns an integer return code, where 0 means
 167  * "continue" and != 0 means "fatal error, hang the system".
 168  */
 169 typedef int (init_fnc_t) (void);
 170
 171 /************************************************************************
 172  * Init Utilities                                                       *
 173  ************************************************************************
 174  * Some of this code should be moved into the core functions,
 175  * but let's get it working (again) first...
 176  */
 177
 178 static int init_baudrate (void)
 179 {
 180         uchar tmp[64];  /* long enough for environment variables */
 181         int i = getenv_r ("baudrate", tmp, sizeof (tmp));
 182
 183         gd->baudrate = (i > 0)
 184                         ? (int) simple_strtoul (tmp, NULL, 10)
 185                         : CONFIG_BAUDRATE;
 186         return (0);
 187 }
 188
 189 /***********************************************************************/
 190
 191 static int init_func_ram (void)
 192 {
 193         int board_type = 0;     /* use dummy arg */
 194         puts ("DRAM:  ");
 195
 196         if ((gd->ram_size = initdram (board_type)) > 0) {
 197                 print_size (gd->ram_size, "\n");
 198                 return (0);
 199         }
 200         puts (failed);
 201         return (1);
 202 }
 203
 204 /***********************************************************************/
 205
 206 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 207 static int init_func_i2c (void)
 208 {
 209         puts ("I2C:   ");
 210         i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
 211         puts ("ready\n");
 212         return (0);
 213 }
 214 #endif
 215
 216 /***********************************************************************/
 217
 218 /************************************************************************
 219  * Initialization sequence                                              *
 220  ************************************************************************
 221  */
 222
 223 init_fnc_t *init_sequence[] = {
 224     get_clocks,
 225         env_init,
 226         init_baudrate,
 227         serial_init,
 228         console_init_f,
 229         display_options,
 230         checkcpu,
 231         checkboard,
 232 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 233         init_func_i2c,
 234 #endif
 235         init_func_ram,
 236 #if defined(CFG_DRAM_TEST)
 237         testdram,
 238 #endif /* CFG_DRAM_TEST */
 239         INIT_FUNC_WATCHDOG_INIT
 240         NULL,                   /* Terminate this list */
 241 };
 242
 243
 244 /************************************************************************
 245  *
 246  * This is the first part of the initialization sequence that is
 247  * implemented in C, but still running from ROM.
 248  *
 249  * The main purpose is to provide a (serial) console interface as
 250  * soon as possible (so we can see any error messages), and to
 251  * initialize the RAM so that we can relocate the monitor code to
 252  * RAM.
 253  *
 254  * Be aware of the restrictions: global data is read-only, BSS is not
 255  * initialized, and stack space is limited to a few kB.
 256  *
 257  ************************************************************************
 258  */
 259
 260 void
 261 board_init_f (ulong bootflag)
 262 {
 263         bd_t *bd;
 264         ulong len, addr, addr_sp;
 265         ulong *paddr;
 266         gd_t *id;
 267         init_fnc_t **init_fnc_ptr;
 268 #ifdef CONFIG_PRAM
 269         int i;
 270         ulong reg;
 271         uchar tmp[64];          /* long enough for environment variables */
 272 #endif
 273
 274         /* Pointer is writable since we allocated a register for it */
 275         gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
 276         /* compiler optimization barrier needed for GCC >= 3.4 */
 277         __asm__ __volatile__("": : :"memory");
 278
 279         /* Clear initial global data */
 280         memset ((void *) gd, 0, sizeof (gd_t));
 281
 282         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 283                 if ((*init_fnc_ptr)() != 0) {
 284                         hang ();
 285                 }
 286         }
 287
 288         /*
 289          * Now that we have DRAM mapped and working, we can
 290          * relocate the code and continue running from DRAM.
 291          *
 292          * Reserve memory at end of RAM for (top down in that order):
 293          *      - protected RAM
 294          *      - LCD framebuffer
 295          *      - monitor code
 296          *      - board info struct
 297          */
 298         len = (ulong)&_end - CFG_MONITOR_BASE;
 299
 300         addr = CFG_SDRAM_BASE + gd->ram_size;
 301
 302 #ifdef CONFIG_LOGBUFFER
 303         /* reserve kernel log buffer */
 304         addr -= (LOGBUFF_RESERVE);
 305         debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
 306 #endif
 307
 308 #ifdef CONFIG_PRAM
 309         /*
 310          * reserve protected RAM
 311          */
 312         i = getenv_r ("pram", tmp, sizeof (tmp));
 313         reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
 314         addr -= (reg << 10);            /* size is in kB */
 315         debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
 316 #endif /* CONFIG_PRAM */
 317
 318         /*
 319          * reserve memory for U-Boot code, data & bss
 320          * round down to next 4 kB limit
 321          */
 322         addr -= len;
 323         addr &= ~(4096 - 1);
 324
 325         debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
 326
 327         /*
 328          * reserve memory for malloc() arena
 329          */
 330         addr_sp = addr - TOTAL_MALLOC_LEN;
 331         debug ("Reserving %dk for malloc() at: %08lx\n",
 332                         TOTAL_MALLOC_LEN >> 10, addr_sp);
 333
 334         /*
 335          * (permanently) allocate a Board Info struct
 336          * and a permanent copy of the "global" data
 337          */
 338         addr_sp -= sizeof (bd_t);
 339         bd = (bd_t *) addr_sp;
 340         gd->bd = bd;
 341         debug ("Reserving %d Bytes for Board Info at: %08lx\n",
 342                         sizeof (bd_t), addr_sp);
 343         addr_sp -= sizeof (gd_t);
 344         id = (gd_t *) addr_sp;
 345         debug ("Reserving %d Bytes for Global Data at: %08lx\n",
 346                         sizeof (gd_t), addr_sp);
 347
 348         /* Reserve memory for boot params. */
 349         addr_sp -= CFG_BOOTPARAMS_LEN;
 350         bd->bi_boot_params = addr_sp;
 351         debug ("Reserving %dk for boot parameters at: %08lx\n",
 352                         CFG_BOOTPARAMS_LEN >> 10, addr_sp);
 353
 354         /*
 355          * Finally, we set up a new (bigger) stack.
 356          *
 357          * Leave some safety gap for SP, force alignment on 16 byte boundary
 358          * Clear initial stack frame
 359          */
 360         addr_sp -= 16;
 361         addr_sp &= ~0xF;
 362
 363         paddr = (ulong *)addr_sp;
 364         *paddr-- = 0;
 365         *paddr-- = 0;
 366         addr_sp = (ulong)paddr;
 367
 368         debug ("Stack Pointer at: %08lx\n", addr_sp);
 369
 370         /*
 371          * Save local variables to board info struct
 372          */
 373         bd->bi_memstart  = CFG_SDRAM_BASE;      /* start of  DRAM memory      */
 374         bd->bi_memsize   = gd->ram_size;        /* size  of  DRAM memory in bytes */
 375 #ifdef CFG_INIT_RAM_ADDR
 376         bd->bi_sramstart = CFG_INIT_RAM_ADDR;   /* start of  SRAM memory        */
 377         bd->bi_sramsize  = CFG_INIT_RAM_END;    /* size  of  SRAM memory        */
 378 #endif
 379         bd->bi_mbar_base = CFG_MBAR;            /* base of internal registers */
 380
 381         bd->bi_bootflags = bootflag;            /* boot / reboot flag (for LynxOS)    */
 382
 383         WATCHDOG_RESET ();
 384         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 385         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 386         bd->bi_baudrate = gd->baudrate; /* Console Baudrate     */
 387
 388 #ifdef CFG_EXTBDINFO
 389         strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
 390         strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
 391 #endif
 392
 393         WATCHDOG_RESET ();
 394
 395 #ifdef CONFIG_POST
 396         post_bootmode_init();
 397         post_run (NULL, POST_ROM | post_bootmode_get(0));
 398 #endif
 399
 400         WATCHDOG_RESET();
 401
 402         memcpy (id, (void *)gd, sizeof (gd_t));
 403
 404         debug ("Start relocate of code from %08x to %08lx\n", CFG_MONITOR_BASE, addr);
 405         relocate_code (addr_sp, id, addr);
 406
 407         /* NOTREACHED - jump_to_ram() does not return */
 408 }
 409
 410 /************************************************************************
 411  *
 412  * This is the next part if the initialization sequence: we are now
 413  * running from RAM and have a "normal" C environment, i. e. global
 414  * data can be written, BSS has been cleared, the stack size in not
 415  * that critical any more, etc.
 416  *
 417  ************************************************************************
 418  */
 419 void board_init_r (gd_t *id, ulong dest_addr)
 420 {
 421         cmd_tbl_t *cmdtp;
 422         char *s, *e;
 423         bd_t *bd;
 424         int i;
 425         extern void malloc_bin_reloc (void);
 426
 427 #ifndef CFG_ENV_IS_NOWHERE
 428         extern char * env_name_spec;
 429 #endif
 430 #ifndef CFG_NO_FLASH
 431         ulong flash_size;
 432 #endif
 433         gd = id;                /* initialize RAM version of global data */
 434         bd = gd->bd;
 435
 436         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 437
 438 #ifdef CONFIG_SERIAL_MULTI
 439         serial_initialize();
 440 #endif
 441
 442         debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
 443
 444         WATCHDOG_RESET ();
 445
 446         gd->reloc_off =  dest_addr - CFG_MONITOR_BASE;
 447
 448         monitor_flash_len = (ulong)&__init_end - dest_addr;
 449
 450         /*
 451          * We have to relocate the command table manually
 452          */
 453         for (cmdtp = &__u_boot_cmd_start; cmdtp !=  &__u_boot_cmd_end; cmdtp++) {
 454                 ulong addr;
 455                 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
 456 #if 0
 457                 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
 458                                 cmdtp->name, (ulong) (cmdtp->cmd), addr);
 459 #endif
 460                 cmdtp->cmd =
 461                         (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
 462
 463                 addr = (ulong)(cmdtp->name) + gd->reloc_off;
 464                 cmdtp->name = (char *)addr;
 465
 466                 if (cmdtp->usage) {
 467                         addr = (ulong)(cmdtp->usage) + gd->reloc_off;
 468                         cmdtp->usage = (char *)addr;
 469                 }
 470 #ifdef  CFG_LONGHELP
 471                 if (cmdtp->help) {
 472                         addr = (ulong)(cmdtp->help) + gd->reloc_off;
 473                         cmdtp->help = (char *)addr;
 474                 }
 475 #endif
 476         }
 477         /* there are some other pointer constants we must deal with */
 478 #ifndef CFG_ENV_IS_NOWHERE
 479         env_name_spec += gd->reloc_off;
 480 #endif
 481
 482         WATCHDOG_RESET ();
 483
 484 #ifdef CONFIG_LOGBUFFER
 485         logbuff_init_ptrs ();
 486 #endif
 487 #ifdef CONFIG_POST
 488         post_output_backlog ();
 489         post_reloc ();
 490 #endif
 491         WATCHDOG_RESET();
 492
 493 #if 0
 494         /* instruction cache enabled in cpu_init_f() for faster relocation */
 495         icache_enable ();       /* it's time to enable the instruction cache */
 496 #endif
 497
 498         /*
 499          * Setup trap handlers
 500          */
 501         trap_init (CFG_SDRAM_BASE);
 502
 503 #if !defined(CFG_NO_FLASH)
 504         puts ("FLASH: ");
 505
 506         if ((flash_size = flash_init ()) > 0) {
 507 # ifdef CFG_FLASH_CHECKSUM
 508                 print_size (flash_size, "");
 509                 /*
 510                  * Compute and print flash CRC if flashchecksum is set to 'y'
 511                  *
 512                  * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 513                  */
 514                 s = getenv ("flashchecksum");
 515                 if (s && (*s == 'y')) {
 516                         printf ("  CRC: %08lX",
 517                                         crc32 (0,
 518                                                    (const unsigned char *) CFG_FLASH_BASE,
 519                                                    flash_size)
 520                                         );
 521                 }
 522                 putc ('\n');
 523 # else  /* !CFG_FLASH_CHECKSUM */
 524                 print_size (flash_size, "\n");
 525 # endif /* CFG_FLASH_CHECKSUM */
 526         } else {
 527                 puts (failed);
 528                 hang ();
 529         }
 530
 531         bd->bi_flashstart = CFG_FLASH_BASE;     /* update start of FLASH memory    */
 532         bd->bi_flashsize = flash_size;  /* size of FLASH memory (final value) */
 533         bd->bi_flashoffset = 0;
 534 #else   /* CFG_NO_FLASH */
 535         bd->bi_flashsize = 0;
 536         bd->bi_flashstart = 0;
 537         bd->bi_flashoffset = 0;
 538 #endif /* !CFG_NO_FLASH */
 539
 540         WATCHDOG_RESET ();
 541
 542         /* initialize higher level parts of CPU like time base and timers */
 543         cpu_init_r ();
 544
 545         WATCHDOG_RESET ();
 546
 547         /* initialize malloc() area */
 548         mem_malloc_init ();
 549         malloc_bin_reloc ();
 550
 551 #ifdef CONFIG_SPI
 552 # if !defined(CFG_ENV_IS_IN_EEPROM)
 553         spi_init_f ();
 554 # endif
 555         spi_init_r ();
 556 #endif
 557
 558         /* relocate environment function pointers etc. */
 559         env_relocate ();
 560
 561         /*
 562          * Fill in missing fields of bd_info.
 563          * We do this here, where we have "normal" access to the
 564          * environment; we used to do this still running from ROM,
 565          * where had to use getenv_r(), which can be pretty slow when
 566          * the environment is in EEPROM.
 567          */
 568         s = getenv ("ethaddr");
 569         for (i = 0; i < 6; ++i) {
 570                 bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 571                 if (s)
 572                         s = (*e) ? e + 1 : e;
 573         }
 574 #ifdef CONFIG_HAS_ETH1
 575         /* handle the 2nd ethernet address */
 576
 577         s = getenv ("eth1addr");
 578         for (i = 0; i < 6; ++i) {
 579                 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 580                 if (s)
 581                         s = (*e) ? e + 1 : e;
 582         }
 583 #endif
 584 #ifdef CONFIG_HAS_ETH2
 585         /* handle the 3rd ethernet address */
 586
 587         s = getenv ("eth2addr");
 588         for (i = 0; i < 6; ++i) {
 589                 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 590                 if (s)
 591                         s = (*e) ? e + 1 : e;
 592         }
 593 #endif
 594
 595 #ifdef CONFIG_HAS_ETH3
 596         /* handle 4th ethernet address */
 597         s = getenv("eth3addr");
 598         for (i = 0; i < 6; ++i) {
 599                 bd->bi_enet3addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 600                 if (s)
 601                         s = (*e) ? e + 1 : e;
 602         }
 603 #endif
 604
 605         /* IP Address */
 606         bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 607
 608         WATCHDOG_RESET ();
 609
 610 #if defined(CONFIG_PCI)
 611         /*
 612          * Do pci configuration
 613          */
 614         pci_init ();
 615 #endif
 616
 617         /** leave this here (after malloc(), environment and PCI are working) **/
 618         /* Initialize devices */
 619         devices_init ();
 620
 621         /* Initialize the jump table for applications */
 622         jumptable_init ();
 623
 624         /* Initialize the console (after the relocation and devices init) */
 625         console_init_r ();
 626
 627 #if defined(CONFIG_MISC_INIT_R)
 628         /* miscellaneous platform dependent initialisations */
 629         misc_init_r ();
 630 #endif
 631
 632 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
 633         WATCHDOG_RESET ();
 634         puts ("KGDB:  ");
 635         kgdb_init ();
 636 #endif
 637
 638         debug ("U-Boot relocated to %08lx\n", dest_addr);
 639
 640         /*
 641          * Enable Interrupts
 642          */
 643         interrupt_init ();
 644
 645         /* Must happen after interrupts are initialized since
 646          * an irq handler gets installed
 647          */
 648         timer_init();
 649
 650 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 651         serial_buffered_init();
 652 #endif
 653
 654 #ifdef CONFIG_STATUS_LED
 655         status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
 656 #endif
 657
 658         udelay (20);
 659
 660         set_timer (0);
 661
 662         /* Insert function pointers now that we have relocated the code */
 663
 664         /* Initialize from environment */
 665         if ((s = getenv ("loadaddr")) != NULL) {
 666                 load_addr = simple_strtoul (s, NULL, 16);
 667         }
 668 #if (CONFIG_COMMANDS & CFG_CMD_NET)
 669         if ((s = getenv ("bootfile")) != NULL) {
 670                 copy_filename (BootFile, s, sizeof (BootFile));
 671         }
 672 #endif /* CFG_CMD_NET */
 673
 674         WATCHDOG_RESET ();
 675
 676 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
 677         WATCHDOG_RESET ();
 678         puts ("DOC:   ");
 679         doc_init ();
 680 #endif
 681
 682 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 683         WATCHDOG_RESET ();
 684         puts ("NAND:  ");
 685         nand_init();            /* go init the NAND */
 686 #endif
 687
 688 #if (CONFIG_COMMANDS & CFG_CMD_NET)
 689         WATCHDOG_RESET();
 690 #if defined(FEC_ENET)
 691         eth_init(bd);
 692 #endif
 693 #if defined(CONFIG_NET_MULTI)
 694         puts ("Net:   ");
 695         eth_initialize (bd);
 696 #endif
 697 #endif
 698
 699 #ifdef CONFIG_POST
 700         post_run (NULL, POST_RAM | post_bootmode_get(0));
 701 #endif
 702
 703 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && !(CONFIG_COMMANDS & CFG_CMD_IDE)
 704         WATCHDOG_RESET ();
 705         puts ("PCMCIA:");
 706         pcmcia_init ();
 707 #endif
 708
 709 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
 710         WATCHDOG_RESET ();
 711         puts ("IDE:   ");
 712         ide_init ();
 713 #endif /* CFG_CMD_IDE */
 714
 715 #ifdef CONFIG_LAST_STAGE_INIT
 716         WATCHDOG_RESET ();
 717         /*
 718          * Some parts can be only initialized if all others (like
 719          * Interrupts) are up and running (i.e. the PC-style ISA
 720          * keyboard).
 721          */
 722         last_stage_init ();
 723 #endif
 724
 725 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
 726         WATCHDOG_RESET ();
 727         bedbug_init ();
 728 #endif
 729
 730 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
 731         /*
 732          * Export available size of memory for Linux,
 733          * taking into account the protected RAM at top of memory
 734          */
 735         {
 736                 ulong pram;
 737                 uchar memsz[32];
 738 #ifdef CONFIG_PRAM
 739                 char *s;
 740
 741                 if ((s = getenv ("pram")) != NULL) {
 742                         pram = simple_strtoul (s, NULL, 10);
 743                 } else {
 744                         pram = CONFIG_PRAM;
 745                 }
 746 #else
 747                 pram=0;
 748 #endif
 749 #ifdef CONFIG_LOGBUFFER
 750                 /* Also take the logbuffer into account (pram is in kB) */
 751                 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
 752 #endif
 753                 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
 754                 setenv ("mem", memsz);
 755         }
 756 #endif
 757
 758 #ifdef CONFIG_MODEM_SUPPORT
 759  {
 760          extern int do_mdm_init;
 761          do_mdm_init = gd->do_mdm_init;
 762  }
 763 #endif
 764
 765 #ifdef CONFIG_WATCHDOG
 766         /* disable watchdog if environment is set */
 767         if ((s = getenv ("watchdog")) != NULL) {
 768                 if (strncmp (s, "off", 3) == 0) {
 769                         WATCHDOG_DISABLE ();
 770                 }
 771         }
 772 #endif /* CONFIG_WATCHDOG*/
 773
 774
 775         /* Initialization complete - start the monitor */
 776
 777         /* main_loop() can return to retry autoboot, if so just run it again. */
 778         for (;;) {
 779                 WATCHDOG_RESET ();
 780                 main_loop ();
 781         }
 782
 783         /* NOTREACHED - no way out of command loop except booting */
 784 }
 785
 786
 787 void hang(void)
 788 {
 789         puts ("### ERROR ### Please RESET the board ###\n");
 790         for (;;);
 791 }