arch/arm/lib/board.c

   1 /*
   2  * (C) Copyright 2002-2006
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * (C) Copyright 2002
   6  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   7  * Marius Groeger <mgroeger@sysgo.de>
   8  *
   9  * See file CREDITS for list of people who contributed to this
  10  * project.
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License as
  14  * published by the Free Software Foundation; either version 2 of
  15  * the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  25  * MA 02111-1307 USA
  26  */
  27
  28 /*
  29  * To match the U-Boot user interface on ARM platforms to the U-Boot
  30  * standard (as on PPC platforms), some messages with debug character
  31  * are removed from the default U-Boot build.
  32  *
  33  * Define DEBUG here if you want additional info as shown below
  34  * printed upon startup:
  35  *
  36  * U-Boot code: 00F00000 -> 00F3C774  BSS: -> 00FC3274
  37  * IRQ Stack: 00ebff7c
  38  * FIQ Stack: 00ebef7c
  39  */
  40
  41 #include <common.h>
  42 #include <command.h>
  43 #include <environment.h>
  44 #include <malloc.h>
  45 #include <stdio_dev.h>
  46 #include <version.h>
  47 #include <net.h>
  48 #include <serial.h>
  49 #include <nand.h>
  50 #include <onenand_uboot.h>
  51 #include <mmc.h>
  52 #include <libfdt.h>
  53 #include <fdtdec.h>
  54 #include <post.h>
  55 #include <logbuff.h>
  56 #include <asm/sections.h>
  57
  58 #ifdef CONFIG_BITBANGMII
  59 #include <miiphy.h>
  60 #endif
  61
  62 DECLARE_GLOBAL_DATA_PTR;
  63
  64 ulong monitor_flash_len;
  65
  66 #ifdef CONFIG_HAS_DATAFLASH
  67 extern int  AT91F_DataflashInit(void);
  68 extern void dataflash_print_info(void);
  69 #endif
  70
  71 #if defined(CONFIG_HARD_I2C) || \
  72     defined(CONFIG_SOFT_I2C)
  73 #include <i2c.h>
  74 #endif
  75
  76 /************************************************************************
  77  * Coloured LED functionality
  78  ************************************************************************
  79  * May be supplied by boards if desired
  80  */
  81 inline void __coloured_LED_init(void) {}
  82 void coloured_LED_init(void)
  83         __attribute__((weak, alias("__coloured_LED_init")));
  84 inline void __red_led_on(void) {}
  85 void red_led_on(void) __attribute__((weak, alias("__red_led_on")));
  86 inline void __red_led_off(void) {}
  87 void red_led_off(void) __attribute__((weak, alias("__red_led_off")));
  88 inline void __green_led_on(void) {}
  89 void green_led_on(void) __attribute__((weak, alias("__green_led_on")));
  90 inline void __green_led_off(void) {}
  91 void green_led_off(void) __attribute__((weak, alias("__green_led_off")));
  92 inline void __yellow_led_on(void) {}
  93 void yellow_led_on(void) __attribute__((weak, alias("__yellow_led_on")));
  94 inline void __yellow_led_off(void) {}
  95 void yellow_led_off(void) __attribute__((weak, alias("__yellow_led_off")));
  96 inline void __blue_led_on(void) {}
  97 void blue_led_on(void) __attribute__((weak, alias("__blue_led_on")));
  98 inline void __blue_led_off(void) {}
  99 void blue_led_off(void) __attribute__((weak, alias("__blue_led_off")));
 100
 101 /*
 102  ************************************************************************
 103  * Init Utilities                                                       *
 104  ************************************************************************
 105  * Some of this code should be moved into the core functions,
 106  * or dropped completely,
 107  * but let's get it working (again) first...
 108  */
 109
 110 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
 111 #define CONFIG_BAUDRATE 115200
 112 #endif
 113
 114 static int init_baudrate(void)
 115 {
 116         gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
 117         return 0;
 118 }
 119
 120 static int display_banner(void)
 121 {
 122         printf("\n\n%s\n\n", version_string);
 123         debug("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
 124                _TEXT_BASE,
 125                _bss_start_ofs + _TEXT_BASE, _bss_end_ofs + _TEXT_BASE);
 126 #ifdef CONFIG_MODEM_SUPPORT
 127         debug("Modem Support enabled\n");
 128 #endif
 129 #ifdef CONFIG_USE_IRQ
 130         debug("IRQ Stack: %08lx\n", IRQ_STACK_START);
 131         debug("FIQ Stack: %08lx\n", FIQ_STACK_START);
 132 #endif
 133
 134         return (0);
 135 }
 136
 137 /*
 138  * WARNING: this code looks "cleaner" than the PowerPC version, but
 139  * has the disadvantage that you either get nothing, or everything.
 140  * On PowerPC, you might see "DRAM: " before the system hangs - which
 141  * gives a simple yet clear indication which part of the
 142  * initialization if failing.
 143  */
 144 static int display_dram_config(void)
 145 {
 146         int i;
 147
 148 #ifdef DEBUG
 149         puts("RAM Configuration:\n");
 150
 151         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
 152                 printf("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
 153                 print_size(gd->bd->bi_dram[i].size, "\n");
 154         }
 155 #else
 156         ulong size = 0;
 157
 158         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++)
 159                 size += gd->bd->bi_dram[i].size;
 160
 161         puts("DRAM:  ");
 162         print_size(size, "\n");
 163 #endif
 164
 165         return (0);
 166 }
 167
 168 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 169 static int init_func_i2c(void)
 170 {
 171         puts("I2C:   ");
 172         i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 173         puts("ready\n");
 174         return (0);
 175 }
 176 #endif
 177
 178 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
 179 #include <pci.h>
 180 static int arm_pci_init(void)
 181 {
 182         pci_init();
 183         return 0;
 184 }
 185 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
 186
 187 /*
 188  * Breathe some life into the board...
 189  *
 190  * Initialize a serial port as console, and carry out some hardware
 191  * tests.
 192  *
 193  * The first part of initialization is running from Flash memory;
 194  * its main purpose is to initialize the RAM so that we
 195  * can relocate the monitor code to RAM.
 196  */
 197
 198 /*
 199  * All attempts to come up with a "common" initialization sequence
 200  * that works for all boards and architectures failed: some of the
 201  * requirements are just _too_ different. To get rid of the resulting
 202  * mess of board dependent #ifdef'ed code we now make the whole
 203  * initialization sequence configurable to the user.
 204  *
 205  * The requirements for any new initalization function is simple: it
 206  * receives a pointer to the "global data" structure as it's only
 207  * argument, and returns an integer return code, where 0 means
 208  * "continue" and != 0 means "fatal error, hang the system".
 209  */
 210 typedef int (init_fnc_t) (void);
 211
 212 int print_cpuinfo(void);
 213
 214 void __dram_init_banksize(void)
 215 {
 216         gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
 217         gd->bd->bi_dram[0].size =  gd->ram_size;
 218 }
 219 void dram_init_banksize(void)
 220         __attribute__((weak, alias("__dram_init_banksize")));
 221
 222 int __arch_cpu_init(void)
 223 {
 224         return 0;
 225 }
 226 int arch_cpu_init(void)
 227         __attribute__((weak, alias("__arch_cpu_init")));
 228
 229 int __power_init_board(void)
 230 {
 231         return 0;
 232 }
 233 int power_init_board(void)
 234         __attribute__((weak, alias("__power_init_board")));
 235
 236         /* Record the board_init_f() bootstage (after arch_cpu_init()) */
 237 static int mark_bootstage(void)
 238 {
 239         bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_F, "board_init_f");
 240
 241         return 0;
 242 }
 243
 244 init_fnc_t *init_sequence[] = {
 245         arch_cpu_init,          /* basic arch cpu dependent setup */
 246         mark_bootstage,
 247 #ifdef CONFIG_OF_CONTROL
 248         fdtdec_check_fdt,
 249 #endif
 250 #if defined(CONFIG_BOARD_EARLY_INIT_F)
 251         board_early_init_f,
 252 #endif
 253         timer_init,             /* initialize timer */
 254 #ifdef CONFIG_BOARD_POSTCLK_INIT
 255         board_postclk_init,
 256 #endif
 257 #ifdef CONFIG_FSL_ESDHC
 258         get_clocks,
 259 #endif
 260         env_init,               /* initialize environment */
 261         init_baudrate,          /* initialze baudrate settings */
 262         serial_init,            /* serial communications setup */
 263         console_init_f,         /* stage 1 init of console */
 264         display_banner,         /* say that we are here */
 265 #if defined(CONFIG_DISPLAY_CPUINFO)
 266         print_cpuinfo,          /* display cpu info (and speed) */
 267 #endif
 268 #if defined(CONFIG_DISPLAY_BOARDINFO)
 269         checkboard,             /* display board info */
 270 #endif
 271 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 272         init_func_i2c,
 273 #endif
 274         dram_init,              /* configure available RAM banks */
 275         NULL,
 276 };
 277
 278 void board_init_f(ulong bootflag)
 279 {
 280         bd_t *bd;
 281         init_fnc_t **init_fnc_ptr;
 282         gd_t *id;
 283         ulong addr, addr_sp;
 284 #ifdef CONFIG_PRAM
 285         ulong reg;
 286 #endif
 287         void *new_fdt = NULL;
 288         size_t fdt_size = 0;
 289
 290         memset((void *)gd, 0, sizeof(gd_t));
 291
 292         gd->mon_len = _bss_end_ofs;
 293 #ifdef CONFIG_OF_EMBED
 294         /* Get a pointer to the FDT */
 295         gd->fdt_blob = _binary_dt_dtb_start;
 296 #elif defined CONFIG_OF_SEPARATE
 297         /* FDT is at end of image */
 298         gd->fdt_blob = (void *)(_end_ofs + _TEXT_BASE);
 299 #endif
 300         /* Allow the early environment to override the fdt address */
 301         gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
 302                                                 (uintptr_t)gd->fdt_blob);
 303
 304         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 305                 if ((*init_fnc_ptr)() != 0) {
 306                         hang ();
 307                 }
 308         }
 309
 310 #ifdef CONFIG_OF_CONTROL
 311         /* For now, put this check after the console is ready */
 312         if (fdtdec_prepare_fdt()) {
 313                 panic("** CONFIG_OF_CONTROL defined but no FDT - please see "
 314                         "doc/README.fdt-control");
 315         }
 316 #endif
 317
 318         debug("monitor len: %08lX\n", gd->mon_len);
 319         /*
 320          * Ram is setup, size stored in gd !!
 321          */
 322         debug("ramsize: %08lX\n", gd->ram_size);
 323 #if defined(CONFIG_SYS_MEM_TOP_HIDE)
 324         /*
 325          * Subtract specified amount of memory to hide so that it won't
 326          * get "touched" at all by U-Boot. By fixing up gd->ram_size
 327          * the Linux kernel should now get passed the now "corrected"
 328          * memory size and won't touch it either. This should work
 329          * for arch/ppc and arch/powerpc. Only Linux board ports in
 330          * arch/powerpc with bootwrapper support, that recalculate the
 331          * memory size from the SDRAM controller setup will have to
 332          * get fixed.
 333          */
 334         gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
 335 #endif
 336
 337         addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
 338
 339 #ifdef CONFIG_LOGBUFFER
 340 #ifndef CONFIG_ALT_LB_ADDR
 341         /* reserve kernel log buffer */
 342         addr -= (LOGBUFF_RESERVE);
 343         debug("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN,
 344                 addr);
 345 #endif
 346 #endif
 347
 348 #ifdef CONFIG_PRAM
 349         /*
 350          * reserve protected RAM
 351          */
 352         reg = getenv_ulong("pram", 10, CONFIG_PRAM);
 353         addr -= (reg << 10);            /* size is in kB */
 354         debug("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
 355 #endif /* CONFIG_PRAM */
 356
 357 #if !(defined(CONFIG_SYS_ICACHE_OFF) && defined(CONFIG_SYS_DCACHE_OFF))
 358         /* reserve TLB table */
 359         gd->arch.tlb_size = 4096 * 4;
 360         addr -= gd->arch.tlb_size;
 361
 362         /* round down to next 64 kB limit */
 363         addr &= ~(0x10000 - 1);
 364
 365         gd->arch.tlb_addr = addr;
 366         debug("TLB table from %08lx to %08lx\n", addr, addr + gd->arch.tlb_size);
 367 #endif
 368
 369         /* round down to next 4 kB limit */
 370         addr &= ~(4096 - 1);
 371         debug("Top of RAM usable for U-Boot at: %08lx\n", addr);
 372
 373 #ifdef CONFIG_LCD
 374 #ifdef CONFIG_FB_ADDR
 375         gd->fb_base = CONFIG_FB_ADDR;
 376 #else
 377         /* reserve memory for LCD display (always full pages) */
 378         addr = lcd_setmem(addr);
 379         gd->fb_base = addr;
 380 #endif /* CONFIG_FB_ADDR */
 381 #endif /* CONFIG_LCD */
 382
 383         /*
 384          * reserve memory for U-Boot code, data & bss
 385          * round down to next 4 kB limit
 386          */
 387         addr -= gd->mon_len;
 388         addr &= ~(4096 - 1);
 389
 390         debug("Reserving %ldk for U-Boot at: %08lx\n", gd->mon_len >> 10, addr);
 391
 392 #ifndef CONFIG_SPL_BUILD
 393         /*
 394          * reserve memory for malloc() arena
 395          */
 396         addr_sp = addr - TOTAL_MALLOC_LEN;
 397         debug("Reserving %dk for malloc() at: %08lx\n",
 398                         TOTAL_MALLOC_LEN >> 10, addr_sp);
 399         /*
 400          * (permanently) allocate a Board Info struct
 401          * and a permanent copy of the "global" data
 402          */
 403         addr_sp -= sizeof (bd_t);
 404         bd = (bd_t *) addr_sp;
 405         gd->bd = bd;
 406         debug("Reserving %zu Bytes for Board Info at: %08lx\n",
 407                         sizeof (bd_t), addr_sp);
 408
 409 #ifdef CONFIG_MACH_TYPE
 410         gd->bd->bi_arch_number = CONFIG_MACH_TYPE; /* board id for Linux */
 411 #endif
 412
 413         addr_sp -= sizeof (gd_t);
 414         id = (gd_t *) addr_sp;
 415         debug("Reserving %zu Bytes for Global Data at: %08lx\n",
 416                         sizeof (gd_t), addr_sp);
 417
 418 #if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
 419         /*
 420          * If the device tree is sitting immediate above our image then we
 421          * must relocate it. If it is embedded in the data section, then it
 422          * will be relocated with other data.
 423          */
 424         if (gd->fdt_blob) {
 425                 fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
 426
 427                 addr_sp -= fdt_size;
 428                 new_fdt = (void *)addr_sp;
 429                 debug("Reserving %zu Bytes for FDT at: %08lx\n",
 430                       fdt_size, addr_sp);
 431         }
 432 #endif
 433
 434         /* setup stackpointer for exeptions */
 435         gd->irq_sp = addr_sp;
 436 #ifdef CONFIG_USE_IRQ
 437         addr_sp -= (CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ);
 438         debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
 439                 CONFIG_STACKSIZE_IRQ+CONFIG_STACKSIZE_FIQ, addr_sp);
 440 #endif
 441         /* leave 3 words for abort-stack    */
 442         addr_sp -= 12;
 443
 444         /* 8-byte alignment for ABI compliance */
 445         addr_sp &= ~0x07;
 446 #else
 447         addr_sp += 128; /* leave 32 words for abort-stack   */
 448         gd->irq_sp = addr_sp;
 449 #endif
 450
 451         debug("New Stack Pointer is: %08lx\n", addr_sp);
 452
 453 #ifdef CONFIG_POST
 454         post_bootmode_init();
 455         post_run(NULL, POST_ROM | post_bootmode_get(0));
 456 #endif
 457
 458         gd->bd->bi_baudrate = gd->baudrate;
 459         /* Ram ist board specific, so move it to board code ... */
 460         dram_init_banksize();
 461         display_dram_config();  /* and display it */
 462
 463         gd->relocaddr = addr;
 464         gd->start_addr_sp = addr_sp;
 465         gd->reloc_off = addr - _TEXT_BASE;
 466         debug("relocation Offset is: %08lx\n", gd->reloc_off);
 467         if (new_fdt) {
 468                 memcpy(new_fdt, gd->fdt_blob, fdt_size);
 469                 gd->fdt_blob = new_fdt;
 470         }
 471         memcpy(id, (void *)gd, sizeof(gd_t));
 472 }
 473
 474 #if !defined(CONFIG_SYS_NO_FLASH)
 475 static char *failed = "*** failed ***\n";
 476 #endif
 477
 478 /*
 479  * Tell if it's OK to load the environment early in boot.
 480  *
 481  * If CONFIG_OF_CONFIG is defined, we'll check with the FDT to see
 482  * if this is OK (defaulting to saying it's not OK).
 483  *
 484  * NOTE: Loading the environment early can be a bad idea if security is
 485  *       important, since no verification is done on the environment.
 486  *
 487  * @return 0 if environment should not be loaded, !=0 if it is ok to load
 488  */
 489 static int should_load_env(void)
 490 {
 491 #ifdef CONFIG_OF_CONTROL
 492         return fdtdec_get_config_int(gd->fdt_blob, "load-environment", 1);
 493 #elif defined CONFIG_DELAY_ENVIRONMENT
 494         return 0;
 495 #else
 496         return 1;
 497 #endif
 498 }
 499
 500 #if defined(CONFIG_DISPLAY_BOARDINFO_LATE) && defined(CONFIG_OF_CONTROL)
 501 static void display_fdt_model(const void *blob)
 502 {
 503         const char *model;
 504
 505         model = (char *)fdt_getprop(blob, 0, "model", NULL);
 506         printf("Model: %s\n", model ? model : "<unknown>");
 507 }
 508 #endif
 509
 510 /************************************************************************
 511  *
 512  * This is the next part if the initialization sequence: we are now
 513  * running from RAM and have a "normal" C environment, i. e. global
 514  * data can be written, BSS has been cleared, the stack size in not
 515  * that critical any more, etc.
 516  *
 517  ************************************************************************
 518  */
 519
 520 void board_init_r(gd_t *id, ulong dest_addr)
 521 {
 522         ulong malloc_start;
 523 #if !defined(CONFIG_SYS_NO_FLASH)
 524         ulong flash_size;
 525 #endif
 526
 527         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 528         bootstage_mark_name(BOOTSTAGE_ID_START_UBOOT_R, "board_init_r");
 529
 530         monitor_flash_len = _end_ofs;
 531
 532         /* Enable caches */
 533         enable_caches();
 534
 535         debug("monitor flash len: %08lX\n", monitor_flash_len);
 536         board_init();   /* Setup chipselects */
 537         /*
 538          * TODO: printing of the clock inforamtion of the board is now
 539          * implemented as part of bdinfo command. Currently only support for
 540          * davinci SOC's is added. Remove this check once all the board
 541          * implement this.
 542          */
 543 #ifdef CONFIG_CLOCKS
 544         set_cpu_clk_info(); /* Setup clock information */
 545 #endif
 546         serial_initialize();
 547
 548         debug("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
 549
 550 #ifdef CONFIG_LOGBUFFER
 551         logbuff_init_ptrs();
 552 #endif
 553 #ifdef CONFIG_POST
 554         post_output_backlog();
 555 #endif
 556
 557         /* The Malloc area is immediately below the monitor copy in DRAM */
 558         malloc_start = dest_addr - TOTAL_MALLOC_LEN;
 559         mem_malloc_init (malloc_start, TOTAL_MALLOC_LEN);
 560
 561 #ifdef CONFIG_ARCH_EARLY_INIT_R
 562         arch_early_init_r();
 563 #endif
 564         power_init_board();
 565
 566 #if !defined(CONFIG_SYS_NO_FLASH)
 567         puts("Flash: ");
 568
 569         flash_size = flash_init();
 570         if (flash_size > 0) {
 571 # ifdef CONFIG_SYS_FLASH_CHECKSUM
 572                 print_size(flash_size, "");
 573                 /*
 574                  * Compute and print flash CRC if flashchecksum is set to 'y'
 575                  *
 576                  * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 577                  */
 578                 if (getenv_yesno("flashchecksum") == 1) {
 579                         printf("  CRC: %08X", crc32(0,
 580                                 (const unsigned char *) CONFIG_SYS_FLASH_BASE,
 581                                 flash_size));
 582                 }
 583                 putc('\n');
 584 # else  /* !CONFIG_SYS_FLASH_CHECKSUM */
 585                 print_size(flash_size, "\n");
 586 # endif /* CONFIG_SYS_FLASH_CHECKSUM */
 587         } else {
 588                 puts(failed);
 589                 hang();
 590         }
 591 #endif
 592
 593 #if defined(CONFIG_CMD_NAND)
 594         puts("NAND:  ");
 595         nand_init();            /* go init the NAND */
 596 #endif
 597
 598 #if defined(CONFIG_CMD_ONENAND)
 599         onenand_init();
 600 #endif
 601
 602 #ifdef CONFIG_GENERIC_MMC
 603         puts("MMC:   ");
 604         mmc_initialize(gd->bd);
 605 #endif
 606
 607 #ifdef CONFIG_HAS_DATAFLASH
 608         AT91F_DataflashInit();
 609         dataflash_print_info();
 610 #endif
 611
 612         /* initialize environment */
 613         if (should_load_env())
 614                 env_relocate();
 615         else
 616                 set_default_env(NULL);
 617
 618 #if defined(CONFIG_CMD_PCI) || defined(CONFIG_PCI)
 619         arm_pci_init();
 620 #endif
 621
 622         stdio_init();   /* get the devices list going. */
 623
 624         jumptable_init();
 625
 626 #if defined(CONFIG_API)
 627         /* Initialize API */
 628         api_init();
 629 #endif
 630
 631         console_init_r();       /* fully init console as a device */
 632
 633 #ifdef CONFIG_DISPLAY_BOARDINFO_LATE
 634 # ifdef CONFIG_OF_CONTROL
 635         /* Put this here so it appears on the LCD, now it is ready */
 636         display_fdt_model(gd->fdt_blob);
 637 # else
 638         checkboard();
 639 # endif
 640 #endif
 641
 642 #if defined(CONFIG_ARCH_MISC_INIT)
 643         /* miscellaneous arch dependent initialisations */
 644         arch_misc_init();
 645 #endif
 646 #if defined(CONFIG_MISC_INIT_R)
 647         /* miscellaneous platform dependent initialisations */
 648         misc_init_r();
 649 #endif
 650
 651          /* set up exceptions */
 652         interrupt_init();
 653         /* enable exceptions */
 654         enable_interrupts();
 655
 656         /* Initialize from environment */
 657         load_addr = getenv_ulong("loadaddr", 16, load_addr);
 658
 659 #ifdef CONFIG_BOARD_LATE_INIT
 660         board_late_init();
 661 #endif
 662
 663 #ifdef CONFIG_BITBANGMII
 664         bb_miiphy_init();
 665 #endif
 666 #if defined(CONFIG_CMD_NET)
 667         puts("Net:   ");
 668         eth_initialize(gd->bd);
 669 #if defined(CONFIG_RESET_PHY_R)
 670         debug("Reset Ethernet PHY\n");
 671         reset_phy();
 672 #endif
 673 #endif
 674
 675 #ifdef CONFIG_POST
 676         post_run(NULL, POST_RAM | post_bootmode_get(0));
 677 #endif
 678
 679 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
 680         /*
 681          * Export available size of memory for Linux,
 682          * taking into account the protected RAM at top of memory
 683          */
 684         {
 685                 ulong pram = 0;
 686                 uchar memsz[32];
 687
 688 #ifdef CONFIG_PRAM
 689                 pram = getenv_ulong("pram", 10, CONFIG_PRAM);
 690 #endif
 691 #ifdef CONFIG_LOGBUFFER
 692 #ifndef CONFIG_ALT_LB_ADDR
 693                 /* Also take the logbuffer into account (pram is in kB) */
 694                 pram += (LOGBUFF_LEN + LOGBUFF_OVERHEAD) / 1024;
 695 #endif
 696 #endif
 697                 sprintf((char *)memsz, "%ldk", (gd->ram_size / 1024) - pram);
 698                 setenv("mem", (char *)memsz);
 699         }
 700 #endif
 701
 702         /* main_loop() can return to retry autoboot, if so just run it again. */
 703         for (;;) {
 704                 main_loop();
 705         }
 706
 707         /* NOTREACHED - no way out of command loop except booting */
 708 }