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 <stdio_dev.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 #include <serial.h>
  49 #if defined(CONFIG_CMD_BEDBUG)
  50 #include <cmd_bedbug.h>
  51 #endif
  52 #ifdef CONFIG_SYS_ALLOC_DPRAM
  53 #include <commproc.h>
  54 #endif
  55 #include <version.h>
  56
  57 #if defined(CONFIG_HARD_I2C) || \
  58     defined(CONFIG_SOFT_I2C)
  59 #include <i2c.h>
  60 #endif
  61
  62 #ifdef CONFIG_CMD_SPI
  63 #include <spi.h>
  64 #endif
  65
  66 #include <nand.h>
  67
  68 DECLARE_GLOBAL_DATA_PTR;
  69
  70 static char *failed = "*** failed ***\n";
  71
  72 #ifdef  CONFIG_PCU_E
  73 extern flash_info_t flash_info[];
  74 #endif
  75
  76 #include <environment.h>
  77
  78 #if ( ((CONFIG_ENV_ADDR+CONFIG_ENV_SIZE) < CONFIG_SYS_MONITOR_BASE) || \
  79       (CONFIG_ENV_ADDR >= (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)) ) || \
  80     defined(CONFIG_ENV_IS_IN_NVRAM)
  81 #define TOTAL_MALLOC_LEN        (CONFIG_SYS_MALLOC_LEN + CONFIG_ENV_SIZE)
  82 #else
  83 #define TOTAL_MALLOC_LEN        CONFIG_SYS_MALLOC_LEN
  84 #endif
  85
  86 extern ulong __init_end;
  87 extern ulong _end;
  88
  89 extern  void timer_init(void);
  90
  91 #if defined(CONFIG_WATCHDOG)
  92 # define INIT_FUNC_WATCHDOG_INIT        watchdog_init,
  93 # define WATCHDOG_DISABLE               watchdog_disable
  94
  95 extern int watchdog_init(void);
  96 extern int watchdog_disable(void);
  97 #else
  98 # define INIT_FUNC_WATCHDOG_INIT        /* undef */
  99 # define WATCHDOG_DISABLE               /* undef */
 100 #endif /* CONFIG_WATCHDOG */
 101
 102 ulong monitor_flash_len;
 103
 104 /*
 105  * Begin and End of memory area for malloc(), and current "brk"
 106  */
 107 static  ulong   mem_malloc_start = 0;
 108 static  ulong   mem_malloc_end   = 0;
 109 static  ulong   mem_malloc_brk   = 0;
 110
 111 /************************************************************************
 112  * Utilities                                                            *
 113  ************************************************************************
 114  */
 115
 116 /*
 117  * The Malloc area is immediately below the monitor copy in DRAM
 118  */
 119 static void mem_malloc_init (void)
 120 {
 121         ulong dest_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
 122
 123         mem_malloc_end = dest_addr;
 124         mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
 125         mem_malloc_brk = mem_malloc_start;
 126
 127         memset ((void *) mem_malloc_start,
 128                 0,
 129                 mem_malloc_end - mem_malloc_start);
 130 }
 131
 132 void *sbrk (ptrdiff_t increment)
 133 {
 134         ulong old = mem_malloc_brk;
 135         ulong new = old + increment;
 136
 137         if ((new < mem_malloc_start) ||
 138             (new > mem_malloc_end) ) {
 139                 return (NULL);
 140         }
 141         mem_malloc_brk = new;
 142         return ((void *)old);
 143 }
 144
 145 /*
 146  * All attempts to come up with a "common" initialization sequence
 147  * that works for all boards and architectures failed: some of the
 148  * requirements are just _too_ different. To get rid of the resulting
 149  * mess of board dependend #ifdef'ed code we now make the whole
 150  * initialization sequence configurable to the user.
 151  *
 152  * The requirements for any new initalization function is simple: it
 153  * receives a pointer to the "global data" structure as it's only
 154  * argument, and returns an integer return code, where 0 means
 155  * "continue" and != 0 means "fatal error, hang the system".
 156  */
 157 typedef int (init_fnc_t) (void);
 158
 159 /************************************************************************
 160  * Init Utilities
 161  ************************************************************************
 162  * Some of this code should be moved into the core functions,
 163  * but let's get it working (again) first...
 164  */
 165
 166 static int init_baudrate (void)
 167 {
 168         char tmp[64];   /* long enough for environment variables */
 169         int i = getenv_r ("baudrate", tmp, sizeof (tmp));
 170
 171         gd->baudrate = (i > 0)
 172                         ? (int) simple_strtoul (tmp, NULL, 10)
 173                         : CONFIG_BAUDRATE;
 174         return (0);
 175 }
 176
 177 /***********************************************************************/
 178
 179 static int init_func_ram (void)
 180 {
 181         int board_type = 0;     /* use dummy arg */
 182         puts ("DRAM:  ");
 183
 184         if ((gd->ram_size = initdram (board_type)) > 0) {
 185                 print_size (gd->ram_size, "\n");
 186                 return (0);
 187         }
 188         puts (failed);
 189         return (1);
 190 }
 191
 192 /***********************************************************************/
 193
 194 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 195 static int init_func_i2c (void)
 196 {
 197         puts ("I2C:   ");
 198         i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 199         puts ("ready\n");
 200         return (0);
 201 }
 202 #endif
 203
 204 #if defined(CONFIG_HARD_SPI)
 205 static int init_func_spi (void)
 206 {
 207         puts ("SPI:   ");
 208         spi_init ();
 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 #if defined(CONFIG_HARD_SPI)
 234         init_func_spi,
 235 #endif
 236         init_func_ram,
 237 #if defined(CONFIG_SYS_DRAM_TEST)
 238         testdram,
 239 #endif /* CONFIG_SYS_DRAM_TEST */
 240         INIT_FUNC_WATCHDOG_INIT
 241         NULL,                   /* Terminate this list */
 242 };
 243
 244
 245 /************************************************************************
 246  *
 247  * This is the first part of the initialization sequence that is
 248  * implemented in C, but still running from ROM.
 249  *
 250  * The main purpose is to provide a (serial) console interface as
 251  * soon as possible (so we can see any error messages), and to
 252  * initialize the RAM so that we can relocate the monitor code to
 253  * RAM.
 254  *
 255  * Be aware of the restrictions: global data is read-only, BSS is not
 256  * initialized, and stack space is limited to a few kB.
 257  *
 258  ************************************************************************
 259  */
 260
 261 void
 262 board_init_f (ulong bootflag)
 263 {
 264         bd_t *bd;
 265         ulong len, addr, addr_sp;
 266         ulong *paddr;
 267         gd_t *id;
 268         init_fnc_t **init_fnc_ptr;
 269 #ifdef CONFIG_PRAM
 270         int i;
 271         ulong reg;
 272         char tmp[64];           /* long enough for environment variables */
 273 #endif
 274
 275         /* Pointer is writable since we allocated a register for it */
 276         gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
 277         /* compiler optimization barrier needed for GCC >= 3.4 */
 278         __asm__ __volatile__("": : :"memory");
 279
 280         /* Clear initial global data */
 281         memset ((void *) gd, 0, sizeof (gd_t));
 282
 283         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 284                 if ((*init_fnc_ptr)() != 0) {
 285                         hang ();
 286                 }
 287         }
 288
 289         /*
 290          * Now that we have DRAM mapped and working, we can
 291          * relocate the code and continue running from DRAM.
 292          *
 293          * Reserve memory at end of RAM for (top down in that order):
 294          *      - protected RAM
 295          *      - LCD framebuffer
 296          *      - monitor code
 297          *      - board info struct
 298          */
 299         len = (ulong)&_end - CONFIG_SYS_MONITOR_BASE;
 300
 301         addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
 302
 303 #ifdef CONFIG_LOGBUFFER
 304         /* reserve kernel log buffer */
 305         addr -= (LOGBUFF_RESERVE);
 306         debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
 307 #endif
 308
 309 #ifdef CONFIG_PRAM
 310         /*
 311          * reserve protected RAM
 312          */
 313         i = getenv_r ("pram", tmp, sizeof (tmp));
 314         reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
 315         addr -= (reg << 10);            /* size is in kB */
 316         debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
 317 #endif /* CONFIG_PRAM */
 318
 319         /* round down to next 4 kB limit */
 320         addr &= ~(4096 - 1);
 321         debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
 322
 323 #ifdef CONFIG_LCD
 324         /* reserve memory for LCD display (always full pages) */
 325         addr = lcd_setmem (addr);
 326         gd->fb_base = addr;
 327 #endif /* CONFIG_LCD */
 328
 329         /*
 330          * reserve memory for U-Boot code, data & bss
 331          * round down to next 4 kB limit
 332          */
 333         addr -= len;
 334         addr &= ~(4096 - 1);
 335
 336         debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
 337
 338         /*
 339          * reserve memory for malloc() arena
 340          */
 341         addr_sp = addr - TOTAL_MALLOC_LEN;
 342         debug ("Reserving %dk for malloc() at: %08lx\n",
 343                         TOTAL_MALLOC_LEN >> 10, addr_sp);
 344
 345         /*
 346          * (permanently) allocate a Board Info struct
 347          * and a permanent copy of the "global" data
 348          */
 349         addr_sp -= sizeof (bd_t);
 350         bd = (bd_t *) addr_sp;
 351         gd->bd = bd;
 352         debug ("Reserving %zu Bytes for Board Info at: %08lx\n",
 353                         sizeof (bd_t), addr_sp);
 354         addr_sp -= sizeof (gd_t);
 355         id = (gd_t *) addr_sp;
 356         debug ("Reserving %zu Bytes for Global Data at: %08lx\n",
 357                         sizeof (gd_t), addr_sp);
 358
 359         /* Reserve memory for boot params. */
 360         addr_sp -= CONFIG_SYS_BOOTPARAMS_LEN;
 361         bd->bi_boot_params = addr_sp;
 362         debug ("Reserving %dk for boot parameters at: %08lx\n",
 363                         CONFIG_SYS_BOOTPARAMS_LEN >> 10, addr_sp);
 364
 365         /*
 366          * Finally, we set up a new (bigger) stack.
 367          *
 368          * Leave some safety gap for SP, force alignment on 16 byte boundary
 369          * Clear initial stack frame
 370          */
 371         addr_sp -= 16;
 372         addr_sp &= ~0xF;
 373
 374         paddr = (ulong *)addr_sp;
 375         *paddr-- = 0;
 376         *paddr-- = 0;
 377         addr_sp = (ulong)paddr;
 378
 379         debug ("Stack Pointer at: %08lx\n", addr_sp);
 380
 381         /*
 382          * Save local variables to board info struct
 383          */
 384         bd->bi_memstart  = CONFIG_SYS_SDRAM_BASE;       /* start of  DRAM memory      */
 385         bd->bi_memsize   = gd->ram_size;        /* size  of  DRAM memory in bytes */
 386 #ifdef CONFIG_SYS_INIT_RAM_ADDR
 387         bd->bi_sramstart = CONFIG_SYS_INIT_RAM_ADDR;    /* start of  SRAM memory        */
 388         bd->bi_sramsize  = CONFIG_SYS_INIT_RAM_END;     /* size  of  SRAM memory        */
 389 #endif
 390         bd->bi_mbar_base = CONFIG_SYS_MBAR;             /* base of internal registers */
 391
 392         bd->bi_bootflags = bootflag;            /* boot / reboot flag (for LynxOS)    */
 393
 394         WATCHDOG_RESET ();
 395         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 396         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 397 #ifdef CONFIG_PCI
 398         bd->bi_pcifreq = gd->pci_clk;           /* PCI Freq in Hz */
 399 #endif
 400 #ifdef CONFIG_EXTRA_CLOCK
 401         bd->bi_inpfreq = gd->inp_clk;           /* input Freq in Hz */
 402         bd->bi_vcofreq = gd->vco_clk;           /* vco Freq in Hz */
 403         bd->bi_flbfreq = gd->flb_clk;           /* flexbus Freq in Hz */
 404 #endif
 405         bd->bi_baudrate = gd->baudrate; /* Console Baudrate     */
 406
 407 #ifdef CONFIG_SYS_EXTBDINFO
 408         strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
 409         strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
 410 #endif
 411
 412         WATCHDOG_RESET ();
 413
 414 #ifdef CONFIG_POST
 415         post_bootmode_init();
 416         post_run (NULL, POST_ROM | post_bootmode_get(0));
 417 #endif
 418
 419         WATCHDOG_RESET();
 420
 421         memcpy (id, (void *)gd, sizeof (gd_t));
 422
 423         debug ("Start relocate of code from %08x to %08lx\n", CONFIG_SYS_MONITOR_BASE, addr);
 424         relocate_code (addr_sp, id, addr);
 425
 426         /* NOTREACHED - jump_to_ram() does not return */
 427 }
 428
 429 /************************************************************************
 430  *
 431  * This is the next part if the initialization sequence: we are now
 432  * running from RAM and have a "normal" C environment, i. e. global
 433  * data can be written, BSS has been cleared, the stack size in not
 434  * that critical any more, etc.
 435  *
 436  ************************************************************************
 437  */
 438 void board_init_r (gd_t *id, ulong dest_addr)
 439 {
 440         cmd_tbl_t *cmdtp;
 441         char *s;
 442         bd_t *bd;
 443         extern void malloc_bin_reloc (void);
 444
 445 #ifndef CONFIG_ENV_IS_NOWHERE
 446         extern char * env_name_spec;
 447 #endif
 448 #ifndef CONFIG_SYS_NO_FLASH
 449         ulong flash_size;
 450 #endif
 451         gd = id;                /* initialize RAM version of global data */
 452         bd = gd->bd;
 453
 454         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 455
 456 #ifdef CONFIG_SERIAL_MULTI
 457         serial_initialize();
 458 #endif
 459
 460         debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
 461
 462         WATCHDOG_RESET ();
 463
 464         gd->reloc_off =  dest_addr - CONFIG_SYS_MONITOR_BASE;
 465
 466         monitor_flash_len = (ulong)&__init_end - dest_addr;
 467
 468         /*
 469          * We have to relocate the command table manually
 470          */
 471         for (cmdtp = &__u_boot_cmd_start; cmdtp !=  &__u_boot_cmd_end; cmdtp++) {
 472                 ulong addr;
 473                 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
 474 #if 0
 475                 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
 476                                 cmdtp->name, (ulong) (cmdtp->cmd), addr);
 477 #endif
 478                 cmdtp->cmd =
 479                         (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
 480
 481                 addr = (ulong)(cmdtp->name) + gd->reloc_off;
 482                 cmdtp->name = (char *)addr;
 483
 484                 if (cmdtp->usage) {
 485                         addr = (ulong)(cmdtp->usage) + gd->reloc_off;
 486                         cmdtp->usage = (char *)addr;
 487                 }
 488 #ifdef  CONFIG_SYS_LONGHELP
 489                 if (cmdtp->help) {
 490                         addr = (ulong)(cmdtp->help) + gd->reloc_off;
 491                         cmdtp->help = (char *)addr;
 492                 }
 493 #endif
 494         }
 495         /* there are some other pointer constants we must deal with */
 496 #ifndef CONFIG_ENV_IS_NOWHERE
 497         env_name_spec += gd->reloc_off;
 498 #endif
 499
 500         WATCHDOG_RESET ();
 501
 502 #ifdef CONFIG_LOGBUFFER
 503         logbuff_init_ptrs ();
 504 #endif
 505 #ifdef CONFIG_POST
 506         post_output_backlog ();
 507         post_reloc ();
 508 #endif
 509         WATCHDOG_RESET();
 510
 511 #if 0
 512         /* instruction cache enabled in cpu_init_f() for faster relocation */
 513         icache_enable ();       /* it's time to enable the instruction cache */
 514 #endif
 515
 516         /*
 517          * Setup trap handlers
 518          */
 519         trap_init (CONFIG_SYS_SDRAM_BASE);
 520
 521         /* initialize malloc() area */
 522         mem_malloc_init ();
 523         malloc_bin_reloc ();
 524
 525 #if !defined(CONFIG_SYS_NO_FLASH)
 526         puts ("FLASH: ");
 527
 528         if ((flash_size = flash_init ()) > 0) {
 529 # ifdef CONFIG_SYS_FLASH_CHECKSUM
 530                 print_size (flash_size, "");
 531                 /*
 532                  * Compute and print flash CRC if flashchecksum is set to 'y'
 533                  *
 534                  * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 535                  */
 536                 s = getenv ("flashchecksum");
 537                 if (s && (*s == 'y')) {
 538                         printf ("  CRC: %08lX",
 539                                         crc32 (0,
 540                                                    (const unsigned char *) CONFIG_SYS_FLASH_BASE,
 541                                                    flash_size)
 542                                         );
 543                 }
 544                 putc ('\n');
 545 # else  /* !CONFIG_SYS_FLASH_CHECKSUM */
 546                 print_size (flash_size, "\n");
 547 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
 548         } else {
 549                 puts (failed);
 550                 hang ();
 551         }
 552
 553         bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;      /* update start of FLASH memory    */
 554         bd->bi_flashsize = flash_size;  /* size of FLASH memory (final value) */
 555         bd->bi_flashoffset = 0;
 556 #else   /* CONFIG_SYS_NO_FLASH */
 557         bd->bi_flashsize = 0;
 558         bd->bi_flashstart = 0;
 559         bd->bi_flashoffset = 0;
 560 #endif /* !CONFIG_SYS_NO_FLASH */
 561
 562         WATCHDOG_RESET ();
 563
 564         /* initialize higher level parts of CPU like time base and timers */
 565         cpu_init_r ();
 566
 567         WATCHDOG_RESET ();
 568
 569 #ifdef CONFIG_SPI
 570 # if !defined(CONFIG_ENV_IS_IN_EEPROM)
 571         spi_init_f ();
 572 # endif
 573         spi_init_r ();
 574 #endif
 575
 576         /* relocate environment function pointers etc. */
 577         env_relocate ();
 578
 579         /*
 580          * Fill in missing fields of bd_info.
 581          * We do this here, where we have "normal" access to the
 582          * environment; we used to do this still running from ROM,
 583          * where had to use getenv_r(), which can be pretty slow when
 584          * the environment is in EEPROM.
 585          */
 586         bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 587
 588         WATCHDOG_RESET ();
 589
 590 #if defined(CONFIG_PCI)
 591         /*
 592          * Do pci configuration
 593          */
 594         pci_init ();
 595 #endif
 596
 597         /** leave this here (after malloc(), environment and PCI are working) **/
 598         /* Initialize stdio devices */
 599         stdio_init ();
 600
 601         /* Initialize the jump table for applications */
 602         jumptable_init ();
 603
 604         /* Initialize the console (after the relocation and devices init) */
 605         console_init_r ();
 606
 607 #if defined(CONFIG_MISC_INIT_R)
 608         /* miscellaneous platform dependent initialisations */
 609         misc_init_r ();
 610 #endif
 611
 612 #if defined(CONFIG_CMD_KGDB)
 613         WATCHDOG_RESET ();
 614         puts ("KGDB:  ");
 615         kgdb_init ();
 616 #endif
 617
 618         debug ("U-Boot relocated to %08lx\n", dest_addr);
 619
 620         /*
 621          * Enable Interrupts
 622          */
 623         interrupt_init ();
 624
 625         /* Must happen after interrupts are initialized since
 626          * an irq handler gets installed
 627          */
 628         timer_init();
 629
 630 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 631         serial_buffered_init();
 632 #endif
 633
 634 #ifdef CONFIG_STATUS_LED
 635         status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
 636 #endif
 637
 638         udelay (20);
 639
 640         set_timer (0);
 641
 642         /* Insert function pointers now that we have relocated the code */
 643
 644         /* Initialize from environment */
 645         if ((s = getenv ("loadaddr")) != NULL) {
 646                 load_addr = simple_strtoul (s, NULL, 16);
 647         }
 648 #if defined(CONFIG_CMD_NET)
 649         if ((s = getenv ("bootfile")) != NULL) {
 650                 copy_filename (BootFile, s, sizeof (BootFile));
 651         }
 652 #endif
 653
 654         WATCHDOG_RESET ();
 655
 656 #if defined(CONFIG_CMD_DOC)
 657         WATCHDOG_RESET ();
 658         puts ("DOC:   ");
 659         doc_init ();
 660 #endif
 661
 662 #if defined(CONFIG_CMD_NAND)
 663         WATCHDOG_RESET ();
 664         puts ("NAND:  ");
 665         nand_init();            /* go init the NAND */
 666 #endif
 667
 668 #if defined(CONFIG_CMD_NET)
 669         WATCHDOG_RESET();
 670 #if defined(FEC_ENET)
 671         eth_init(bd);
 672 #endif
 673 #if defined(CONFIG_NET_MULTI)
 674         puts ("Net:   ");
 675         eth_initialize (bd);
 676 #endif
 677 #endif
 678
 679 #ifdef CONFIG_POST
 680         post_run (NULL, POST_RAM | post_bootmode_get(0));
 681 #endif
 682
 683 #if defined(CONFIG_CMD_PCMCIA) \
 684     && !defined(CONFIG_CMD_IDE)
 685         WATCHDOG_RESET ();
 686         puts ("PCMCIA:");
 687         pcmcia_init ();
 688 #endif
 689
 690 #if defined(CONFIG_CMD_IDE)
 691         WATCHDOG_RESET ();
 692         puts ("IDE:   ");
 693         ide_init ();
 694 #endif
 695
 696 #ifdef CONFIG_LAST_STAGE_INIT
 697         WATCHDOG_RESET ();
 698         /*
 699          * Some parts can be only initialized if all others (like
 700          * Interrupts) are up and running (i.e. the PC-style ISA
 701          * keyboard).
 702          */
 703         last_stage_init ();
 704 #endif
 705
 706 #if defined(CONFIG_CMD_BEDBUG)
 707         WATCHDOG_RESET ();
 708         bedbug_init ();
 709 #endif
 710
 711 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
 712         /*
 713          * Export available size of memory for Linux,
 714          * taking into account the protected RAM at top of memory
 715          */
 716         {
 717                 ulong pram;
 718                 char memsz[32];
 719 #ifdef CONFIG_PRAM
 720                 char *s;
 721
 722                 if ((s = getenv ("pram")) != NULL) {
 723                         pram = simple_strtoul (s, NULL, 10);
 724                 } else {
 725                         pram = CONFIG_PRAM;
 726                 }
 727 #else
 728                 pram=0;
 729 #endif
 730 #ifdef CONFIG_LOGBUFFER
 731                 /* Also take the logbuffer into account (pram is in kB) */
 732                 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
 733 #endif
 734                 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
 735                 setenv ("mem", memsz);
 736         }
 737 #endif
 738
 739 #ifdef CONFIG_MODEM_SUPPORT
 740  {
 741          extern int do_mdm_init;
 742          do_mdm_init = gd->do_mdm_init;
 743  }
 744 #endif
 745
 746 #ifdef CONFIG_WATCHDOG
 747         /* disable watchdog if environment is set */
 748         if ((s = getenv ("watchdog")) != NULL) {
 749                 if (strncmp (s, "off", 3) == 0) {
 750                         WATCHDOG_DISABLE ();
 751                 }
 752         }
 753 #endif /* CONFIG_WATCHDOG*/
 754
 755
 756         /* Initialization complete - start the monitor */
 757
 758         /* main_loop() can return to retry autoboot, if so just run it again. */
 759         for (;;) {
 760                 WATCHDOG_RESET ();
 761                 main_loop ();
 762         }
 763
 764         /* NOTREACHED - no way out of command loop except booting */
 765 }
 766
 767
 768 void hang(void)
 769 {
 770         puts ("### ERROR ### Please RESET the board ###\n");
 771         for (;;);
 772 }