lib_ppc/board.c

   1 /*
   2  * (C) Copyright 2000-2002
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <watchdog.h>
  26 #include <command.h>
  27 #include <malloc.h>
  28 #include <devices.h>
  29 #ifdef CONFIG_8xx
  30 #include <mpc8xx.h>
  31 #endif
  32 #ifdef CONFIG_5xx
  33 #include <mpc5xx.h>
  34 #endif
  35 #ifdef CONFIG_MPC5XXX
  36 #include <mpc5xxx.h>
  37 #endif
  38 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
  39 #include <ide.h>
  40 #endif
  41 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
  42 #include <scsi.h>
  43 #endif
  44 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
  45 #include <kgdb.h>
  46 #endif
  47 #ifdef CONFIG_STATUS_LED
  48 #include <status_led.h>
  49 #endif
  50 #include <net.h>
  51 #ifdef CFG_ALLOC_DPRAM
  52 #if !(defined(CONFIG_8260)||defined(CONFIG_MPC8560))
  53 #include <commproc.h>
  54 #endif
  55 #endif
  56 #include <version.h>
  57 #if defined(CONFIG_BAB7xx)
  58 #include <w83c553f.h>
  59 #endif
  60 #include <dtt.h>
  61 #if defined(CONFIG_POST)
  62 #include <post.h>
  63 #endif
  64 #if defined(CONFIG_LOGBUFFER)
  65 #include <logbuff.h>
  66 #endif
  67 #if defined(CFG_INIT_RAM_LOCK) && defined(CONFIG_E500)
  68 #include <asm/cache.h>
  69 #endif
  70
  71 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
  72 void doc_init (void);
  73 #endif
  74 #if defined(CONFIG_HARD_I2C) || \
  75     defined(CONFIG_SOFT_I2C)
  76 #include <i2c.h>
  77 #endif
  78 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
  79 void nand_init (void);
  80 #endif
  81
  82 static char *failed = "*** failed ***\n";
  83
  84 #if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
  85 extern flash_info_t flash_info[];
  86 #endif
  87
  88 #include <environment.h>
  89
  90 #if ( ((CFG_ENV_ADDR+CFG_ENV_SIZE) < CFG_MONITOR_BASE) || \
  91       (CFG_ENV_ADDR >= (CFG_MONITOR_BASE + CFG_MONITOR_LEN)) ) || \
  92     defined(CFG_ENV_IS_IN_NVRAM)
  93 #define TOTAL_MALLOC_LEN        (CFG_MALLOC_LEN + CFG_ENV_SIZE)
  94 #else
  95 #define TOTAL_MALLOC_LEN        CFG_MALLOC_LEN
  96 #endif
  97
  98 extern ulong __init_end;
  99 extern ulong _end;
 100 ulong monitor_flash_len;
 101
 102 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
 103 #include <bedbug/type.h>
 104 #endif
 105
 106 /*
 107  * Begin and End of memory area for malloc(), and current "brk"
 108  */
 109 static  ulong   mem_malloc_start = 0;
 110 static  ulong   mem_malloc_end   = 0;
 111 static  ulong   mem_malloc_brk   = 0;
 112
 113 /************************************************************************
 114  * Utilities                                                            *
 115  ************************************************************************
 116  */
 117
 118 /*
 119  * The Malloc area is immediately below the monitor copy in DRAM
 120  */
 121 static void mem_malloc_init (void)
 122 {
 123         DECLARE_GLOBAL_DATA_PTR;
 124
 125         ulong dest_addr = CFG_MONITOR_BASE + gd->reloc_off;
 126
 127         mem_malloc_end = dest_addr;
 128         mem_malloc_start = dest_addr - TOTAL_MALLOC_LEN;
 129         mem_malloc_brk = mem_malloc_start;
 130
 131         memset ((void *) mem_malloc_start,
 132                 0,
 133                 mem_malloc_end - mem_malloc_start);
 134 }
 135
 136 void *sbrk (ptrdiff_t increment)
 137 {
 138         ulong old = mem_malloc_brk;
 139         ulong new = old + increment;
 140
 141         if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
 142                 return (NULL);
 143         }
 144         mem_malloc_brk = new;
 145         return ((void *) old);
 146 }
 147
 148 char *strmhz (char *buf, long hz)
 149 {
 150         long l, n;
 151         long m;
 152
 153         n = hz / 1000000L;
 154         l = sprintf (buf, "%ld", n);
 155         m = (hz % 1000000L) / 1000L;
 156         if (m != 0)
 157                 sprintf (buf + l, ".%03ld", m);
 158         return (buf);
 159 }
 160
 161 /*
 162  * All attempts to come up with a "common" initialization sequence
 163  * that works for all boards and architectures failed: some of the
 164  * requirements are just _too_ different. To get rid of the resulting
 165  * mess of board dependend #ifdef'ed code we now make the whole
 166  * initialization sequence configurable to the user.
 167  *
 168  * The requirements for any new initalization function is simple: it
 169  * receives a pointer to the "global data" structure as it's only
 170  * argument, and returns an integer return code, where 0 means
 171  * "continue" and != 0 means "fatal error, hang the system".
 172  */
 173 typedef int (init_fnc_t) (void);
 174
 175 /************************************************************************
 176  * Init Utilities                                                       *
 177  ************************************************************************
 178  * Some of this code should be moved into the core functions,
 179  * but let's get it working (again) first...
 180  */
 181
 182 static int init_baudrate (void)
 183 {
 184         DECLARE_GLOBAL_DATA_PTR;
 185
 186         uchar tmp[64];  /* long enough for environment variables */
 187         int i = getenv_r ("baudrate", tmp, sizeof (tmp));
 188
 189         gd->baudrate = (i > 0)
 190                         ? (int) simple_strtoul (tmp, NULL, 10)
 191                         : CONFIG_BAUDRATE;
 192         return (0);
 193 }
 194
 195 /***********************************************************************/
 196
 197 static int init_func_ram (void)
 198 {
 199         DECLARE_GLOBAL_DATA_PTR;
 200
 201 #ifdef  CONFIG_BOARD_TYPES
 202         int board_type = gd->board_type;
 203 #else
 204         int board_type = 0;     /* use dummy arg */
 205 #endif
 206         puts ("DRAM:  ");
 207
 208         if ((gd->ram_size = initdram (board_type)) > 0) {
 209                 print_size (gd->ram_size, "\n");
 210                 return (0);
 211         }
 212         puts (failed);
 213         return (1);
 214 }
 215
 216 /***********************************************************************/
 217
 218 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 219 static int init_func_i2c (void)
 220 {
 221         puts ("I2C:   ");
 222         i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
 223         puts ("ready\n");
 224         return (0);
 225 }
 226 #endif
 227
 228 /***********************************************************************/
 229
 230 #if defined(CONFIG_WATCHDOG)
 231 static int init_func_watchdog_init (void)
 232 {
 233         puts ("       Watchdog enabled\n");
 234         WATCHDOG_RESET ();
 235         return (0);
 236 }
 237 # define INIT_FUNC_WATCHDOG_INIT        init_func_watchdog_init,
 238
 239 static int init_func_watchdog_reset (void)
 240 {
 241         WATCHDOG_RESET ();
 242         return (0);
 243 }
 244 # define INIT_FUNC_WATCHDOG_RESET       init_func_watchdog_reset,
 245 #else
 246 # define INIT_FUNC_WATCHDOG_INIT        /* undef */
 247 # define INIT_FUNC_WATCHDOG_RESET       /* undef */
 248 #endif /* CONFIG_WATCHDOG */
 249
 250 /************************************************************************
 251  * Initialization sequence                                              *
 252  ************************************************************************
 253  */
 254
 255 init_fnc_t *init_sequence[] = {
 256
 257 #if defined(CONFIG_BOARD_PRE_INIT)
 258         board_pre_init,         /* very early board init code (fpga boot, etc.) */
 259 #endif
 260
 261         get_clocks,             /* get CPU and bus clocks (etc.) */
 262         init_timebase,
 263 #ifdef CFG_ALLOC_DPRAM
 264 #if !(defined(CONFIG_8260) || defined(CONFIG_MPC8560))
 265         dpram_init,
 266 #endif
 267 #endif
 268 #if defined(CONFIG_BOARD_POSTCLK_INIT)
 269         board_postclk_init,
 270 #endif
 271         env_init,
 272         init_baudrate,
 273         serial_init,
 274         console_init_f,
 275         display_options,
 276 #if defined(CONFIG_8260)
 277         prt_8260_rsr,
 278         prt_8260_clks,
 279 #endif /* CONFIG_8260 */
 280         checkcpu,
 281 #if defined(CONFIG_MPC5XXX)
 282         prt_mpc5xxx_clks,
 283 #endif /* CONFIG_MPC5XXX */
 284         checkboard,
 285         INIT_FUNC_WATCHDOG_INIT
 286 #if defined(CONFIG_BMW)         || \
 287     defined(CONFIG_COGENT)      || \
 288     defined(CONFIG_HYMOD)       || \
 289     defined(CONFIG_RSD_PROTO)   || \
 290     defined(CONFIG_W7O)
 291         misc_init_f,
 292 #endif
 293         INIT_FUNC_WATCHDOG_RESET
 294 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 295         init_func_i2c,
 296 #endif
 297 #if defined(CONFIG_DTT)         /* Digital Thermometers and Thermostats */
 298         dtt_init,
 299 #endif
 300 #ifdef CONFIG_POST
 301         post_init_f,
 302 #endif
 303         INIT_FUNC_WATCHDOG_RESET
 304         init_func_ram,
 305 #if defined(CFG_DRAM_TEST)
 306         testdram,
 307 #endif /* CFG_DRAM_TEST */
 308         INIT_FUNC_WATCHDOG_RESET
 309
 310         NULL,                   /* Terminate this list */
 311 };
 312
 313 /************************************************************************
 314  *
 315  * This is the first part of the initialization sequence that is
 316  * implemented in C, but still running from ROM.
 317  *
 318  * The main purpose is to provide a (serial) console interface as
 319  * soon as possible (so we can see any error messages), and to
 320  * initialize the RAM so that we can relocate the monitor code to
 321  * RAM.
 322  *
 323  * Be aware of the restrictions: global data is read-only, BSS is not
 324  * initialized, and stack space is limited to a few kB.
 325  *
 326  ************************************************************************
 327  */
 328
 329 void board_init_f (ulong bootflag)
 330 {
 331         DECLARE_GLOBAL_DATA_PTR;
 332
 333         bd_t *bd;
 334         ulong len, addr, addr_sp;
 335         gd_t *id;
 336         init_fnc_t **init_fnc_ptr;
 337 #ifdef CONFIG_PRAM
 338         int i;
 339         ulong reg;
 340         uchar tmp[64];          /* long enough for environment variables */
 341 #endif
 342
 343         /* Pointer is writable since we allocated a register for it */
 344         gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
 345
 346 #if !(defined(CONFIG_8260) || defined(CONFIG_MPC8560))
 347         /* Clear initial global data */
 348         memset ((void *) gd, 0, sizeof (gd_t));
 349 #endif
 350
 351         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 352                 if ((*init_fnc_ptr) () != 0) {
 353                         hang ();
 354                 }
 355         }
 356
 357         /*
 358          * Now that we have DRAM mapped and working, we can
 359          * relocate the code and continue running from DRAM.
 360          *
 361          * Reserve memory at end of RAM for (top down in that order):
 362          *  - kernel log buffer
 363          *  - protected RAM
 364          *  - LCD framebuffer
 365          *  - monitor code
 366          *  - board info struct
 367          */
 368         len = (ulong)&_end - CFG_MONITOR_BASE;
 369
 370 #ifndef CONFIG_VERY_BIG_RAM
 371         addr = CFG_SDRAM_BASE + gd->ram_size;
 372 #else
 373         /* only allow stack below 256M */
 374         addr = CFG_SDRAM_BASE +
 375                (gd->ram_size > 256 << 20) ? 256 << 20 : gd->ram_size;
 376 #endif
 377
 378 #ifdef CONFIG_LOGBUFFER
 379         /* reserve kernel log buffer */
 380         addr -= (LOGBUFF_RESERVE);
 381         debug ("Reserving %dk for kernel logbuffer at %08lx\n", LOGBUFF_LEN, addr);
 382 #endif
 383
 384 #ifdef CONFIG_PRAM
 385         /*
 386          * reserve protected RAM
 387          */
 388         i = getenv_r ("pram", tmp, sizeof (tmp));
 389         reg = (i > 0) ? simple_strtoul (tmp, NULL, 10) : CONFIG_PRAM;
 390         addr -= (reg << 10);            /* size is in kB */
 391         debug ("Reserving %ldk for protected RAM at %08lx\n", reg, addr);
 392 #endif /* CONFIG_PRAM */
 393
 394         /* round down to next 4 kB limit */
 395         addr &= ~(4096 - 1);
 396         debug ("Top of RAM usable for U-Boot at: %08lx\n", addr);
 397
 398 #ifdef CONFIG_LCD
 399         /* reserve memory for LCD display (always full pages) */
 400         addr = lcd_setmem (addr);
 401         gd->fb_base = addr;
 402 #endif /* CONFIG_LCD */
 403
 404 #if defined(CONFIG_VIDEO) && defined(CONFIG_8xx)
 405         /* reserve memory for video display (always full pages) */
 406         addr = video_setmem (addr);
 407         gd->fb_base = addr;
 408 #endif /* CONFIG_VIDEO  */
 409
 410         /*
 411          * reserve memory for U-Boot code, data & bss
 412          * round down to next 4 kB limit
 413          */
 414         addr -= len;
 415         addr &= ~(4096 - 1);
 416
 417         debug ("Reserving %ldk for U-Boot at: %08lx\n", len >> 10, addr);
 418
 419 #ifdef CONFIG_AMIGAONEG3SE
 420         gd->relocaddr = addr;
 421 #endif
 422
 423         /*
 424          * reserve memory for malloc() arena
 425          */
 426         addr_sp = addr - TOTAL_MALLOC_LEN;
 427         debug ("Reserving %dk for malloc() at: %08lx\n",
 428                         TOTAL_MALLOC_LEN >> 10, addr_sp);
 429
 430         /*
 431          * (permanently) allocate a Board Info struct
 432          * and a permanent copy of the "global" data
 433          */
 434         addr_sp -= sizeof (bd_t);
 435         bd = (bd_t *) addr_sp;
 436         gd->bd = bd;
 437         debug ("Reserving %d Bytes for Board Info at: %08lx\n",
 438                         sizeof (bd_t), addr_sp);
 439         addr_sp -= sizeof (gd_t);
 440         id = (gd_t *) addr_sp;
 441         debug ("Reserving %d Bytes for Global Data at: %08lx\n",
 442                         sizeof (gd_t), addr_sp);
 443
 444         /*
 445          * Finally, we set up a new (bigger) stack.
 446          *
 447          * Leave some safety gap for SP, force alignment on 16 byte boundary
 448          * Clear initial stack frame
 449          */
 450         addr_sp -= 16;
 451         addr_sp &= ~0xF;
 452         *((ulong *) addr_sp)-- = 0;
 453         *((ulong *) addr_sp)-- = 0;
 454         debug ("Stack Pointer at: %08lx\n", addr_sp);
 455
 456         /*
 457          * Save local variables to board info struct
 458          */
 459
 460         bd->bi_memstart  = CFG_SDRAM_BASE;      /* start of  DRAM memory      */
 461         bd->bi_memsize   = gd->ram_size;        /* size  of  DRAM memory in bytes */
 462
 463 #ifdef CONFIG_IP860
 464         bd->bi_sramstart = SRAM_BASE;   /* start of  SRAM memory      */
 465         bd->bi_sramsize  = SRAM_SIZE;   /* size  of  SRAM memory      */
 466 #else
 467         bd->bi_sramstart = 0;           /* FIXME */ /* start of  SRAM memory      */
 468         bd->bi_sramsize  = 0;           /* FIXME */ /* size  of  SRAM memory      */
 469 #endif
 470
 471 #if defined(CONFIG_8xx) || defined(CONFIG_8260) || defined(CONFIG_5xx) || \
 472     defined(CONFIG_E500)
 473         bd->bi_immr_base = CFG_IMMR;    /* base  of IMMR register     */
 474 #endif
 475 #if defined(CONFIG_MPC5XXX)
 476         bd->bi_mbar_base = CFG_MBAR;    /* base of internal registers */
 477 #endif
 478
 479         bd->bi_bootflags = bootflag;    /* boot / reboot flag (for LynxOS)    */
 480
 481         WATCHDOG_RESET ();
 482         bd->bi_intfreq = gd->cpu_clk;   /* Internal Freq, in Hz */
 483         bd->bi_busfreq = gd->bus_clk;   /* Bus Freq,      in Hz */
 484 #if defined(CONFIG_8260) || defined(CONFIG_MPC8560)
 485         bd->bi_cpmfreq = gd->cpm_clk;
 486         bd->bi_brgfreq = gd->brg_clk;
 487         bd->bi_sccfreq = gd->scc_clk;
 488         bd->bi_vco     = gd->vco_out;
 489 #endif /* CONFIG_8260 */
 490 #if defined(CONFIG_MPC5XXX)
 491         bd->bi_ipbfreq = gd->ipb_clk;
 492         bd->bi_pcifreq = gd->pci_clk;
 493 #endif /* CONFIG_MPC5XXX */
 494         bd->bi_baudrate = gd->baudrate; /* Console Baudrate     */
 495
 496 #ifdef CFG_EXTBDINFO
 497         strncpy (bd->bi_s_version, "1.2", sizeof (bd->bi_s_version));
 498         strncpy (bd->bi_r_version, U_BOOT_VERSION, sizeof (bd->bi_r_version));
 499
 500         bd->bi_procfreq = gd->cpu_clk;  /* Processor Speed, In Hz */
 501         bd->bi_plb_busfreq = gd->bus_clk;
 502 #if defined(CONFIG_405GP) || defined(CONFIG_405EP)
 503         bd->bi_pci_busfreq = get_PCI_freq ();
 504 #endif
 505 #endif
 506
 507         debug ("New Stack Pointer is: %08lx\n", addr_sp);
 508
 509         WATCHDOG_RESET ();
 510
 511 #ifdef CONFIG_POST
 512         post_bootmode_init();
 513         post_run (NULL, POST_ROM | post_bootmode_get(0));
 514 #endif
 515
 516         WATCHDOG_RESET();
 517
 518         memcpy (id, (void *)gd, sizeof (gd_t));
 519
 520         relocate_code (addr_sp, id, addr);
 521
 522         /* NOTREACHED - relocate_code() does not return */
 523 }
 524
 525
 526 /************************************************************************
 527  *
 528  * This is the next part if the initialization sequence: we are now
 529  * running from RAM and have a "normal" C environment, i. e. global
 530  * data can be written, BSS has been cleared, the stack size in not
 531  * that critical any more, etc.
 532  *
 533  ************************************************************************
 534  */
 535
 536 void board_init_r (gd_t *id, ulong dest_addr)
 537 {
 538         DECLARE_GLOBAL_DATA_PTR;
 539         cmd_tbl_t *cmdtp;
 540         char *s, *e;
 541         bd_t *bd;
 542         int i;
 543         extern void malloc_bin_reloc (void);
 544 #ifndef CFG_ENV_IS_NOWHERE
 545         extern char * env_name_spec;
 546 #endif
 547
 548 #ifndef CFG_NO_FLASH
 549         ulong flash_size;
 550 #endif
 551
 552         gd = id;                /* initialize RAM version of global data */
 553         bd = gd->bd;
 554
 555         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 556
 557         debug ("Now running in RAM - U-Boot at: %08lx\n", dest_addr);
 558
 559         WATCHDOG_RESET ();
 560
 561         gd->reloc_off = dest_addr - CFG_MONITOR_BASE;
 562
 563         monitor_flash_len = (ulong)&__init_end - dest_addr;
 564
 565         /*
 566          * We have to relocate the command table manually
 567          */
 568         for (cmdtp = &__u_boot_cmd_start; cmdtp !=  &__u_boot_cmd_end; cmdtp++) {
 569                 ulong addr;
 570                 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
 571 #if 0
 572                 printf ("Command \"%s\": 0x%08lx => 0x%08lx\n",
 573                                 cmdtp->name, (ulong) (cmdtp->cmd), addr);
 574 #endif
 575                 cmdtp->cmd =
 576                         (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
 577
 578                 addr = (ulong)(cmdtp->name) + gd->reloc_off;
 579                 cmdtp->name = (char *)addr;
 580
 581                 if (cmdtp->usage) {
 582                         addr = (ulong)(cmdtp->usage) + gd->reloc_off;
 583                         cmdtp->usage = (char *)addr;
 584                 }
 585 #ifdef  CFG_LONGHELP
 586                 if (cmdtp->help) {
 587                         addr = (ulong)(cmdtp->help) + gd->reloc_off;
 588                         cmdtp->help = (char *)addr;
 589                 }
 590 #endif
 591         }
 592         /* there are some other pointer constants we must deal with */
 593 #ifndef CFG_ENV_IS_NOWHERE
 594         env_name_spec += gd->reloc_off;
 595 #endif
 596
 597         WATCHDOG_RESET ();
 598
 599 #ifdef CONFIG_LOGBUFFER
 600         logbuff_init_ptrs ();
 601 #endif
 602 #ifdef CONFIG_POST
 603         post_output_backlog ();
 604         post_reloc ();
 605 #endif
 606
 607         WATCHDOG_RESET();
 608
 609 #if defined(CONFIG_IP860) || defined(CONFIG_PCU_E) || defined (CONFIG_FLAGADM)
 610         icache_enable ();       /* it's time to enable the instruction cache */
 611 #endif
 612
 613 #if defined(CFG_INIT_RAM_LOCK) && defined(CONFIG_E500)
 614        unlock_ram_in_cache();  /* it's time to unlock D-cache in e500 */
 615 #endif
 616
 617 #if defined(CONFIG_BAB7xx) || defined(CONFIG_CPC45)
 618         /*
 619          * Do PCI configuration on BAB7xx and CPC45 _before_ the flash
 620          * gets initialised, because we need the ISA resp. PCI_to_LOCAL bus
 621          * bridge there.
 622          */
 623         pci_init ();
 624 #endif
 625 #if defined(CONFIG_BAB7xx)
 626         /*
 627          * Initialise the ISA bridge
 628          */
 629         initialise_w83c553f ();
 630 #endif
 631
 632         asm ("sync ; isync");
 633
 634         /*
 635          * Setup trap handlers
 636          */
 637         trap_init (dest_addr);
 638
 639 #if !defined(CFG_NO_FLASH)
 640         puts ("FLASH: ");
 641
 642         if ((flash_size = flash_init ()) > 0) {
 643 # ifdef CFG_FLASH_CHECKSUM
 644                 print_size (flash_size, "");
 645                 /*
 646                  * Compute and print flash CRC if flashchecksum is set to 'y'
 647                  *
 648                  * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 649                  */
 650                 s = getenv ("flashchecksum");
 651                 if (s && (*s == 'y')) {
 652                         printf ("  CRC: %08lX",
 653                                         crc32 (0,
 654                                                    (const unsigned char *) CFG_FLASH_BASE,
 655                                                    flash_size)
 656                                         );
 657                 }
 658                 putc ('\n');
 659 # else  /* !CFG_FLASH_CHECKSUM */
 660                 print_size (flash_size, "\n");
 661 # endif /* CFG_FLASH_CHECKSUM */
 662         } else {
 663                 puts (failed);
 664                 hang ();
 665         }
 666
 667         bd->bi_flashstart = CFG_FLASH_BASE;     /* update start of FLASH memory    */
 668         bd->bi_flashsize = flash_size;  /* size of FLASH memory (final value) */
 669 # if defined(CONFIG_PCU_E) || defined(CONFIG_OXC)
 670         bd->bi_flashoffset = 0;
 671 # elif CFG_MONITOR_BASE == CFG_FLASH_BASE
 672         bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor  */
 673 # else
 674         bd->bi_flashoffset = 0;
 675 # endif
 676 #else   /* CFG_NO_FLASH */
 677
 678         bd->bi_flashsize = 0;
 679         bd->bi_flashstart = 0;
 680         bd->bi_flashoffset = 0;
 681 #endif /* !CFG_NO_FLASH */
 682
 683         WATCHDOG_RESET ();
 684
 685         /* initialize higher level parts of CPU like time base and timers */
 686         cpu_init_r ();
 687
 688         WATCHDOG_RESET ();
 689
 690         /* initialize malloc() area */
 691         mem_malloc_init ();
 692         malloc_bin_reloc ();
 693
 694 #ifdef CONFIG_SPI
 695 # if !defined(CFG_ENV_IS_IN_EEPROM)
 696         spi_init_f ();
 697 # endif
 698         spi_init_r ();
 699 #endif
 700
 701         /* relocate environment function pointers etc. */
 702         env_relocate ();
 703
 704         /*
 705          * Fill in missing fields of bd_info.
 706          * We do this here, where we have "normal" access to the
 707          * environment; we used to do this still running from ROM,
 708          * where had to use getenv_r(), which can be pretty slow when
 709          * the environment is in EEPROM.
 710          */
 711         s = getenv ("ethaddr");
 712 #if defined (CONFIG_MBX) || defined (CONFIG_RPXCLASSIC) || defined(CONFIG_IAD210)
 713         if (s == NULL)
 714                 board_get_enetaddr (bd->bi_enetaddr);
 715         else
 716 #endif
 717                 for (i = 0; i < 6; ++i) {
 718                         bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 719                         if (s)
 720                                 s = (*e) ? e + 1 : e;
 721                 }
 722 #ifdef  CONFIG_HERMES
 723         if ((gd->board_type >> 16) == 2)
 724                 bd->bi_ethspeed = gd->board_type & 0xFFFF;
 725         else
 726                 bd->bi_ethspeed = 0xFFFF;
 727 #endif
 728
 729 #ifdef CONFIG_NX823
 730         load_sernum_ethaddr ();
 731 #endif
 732
 733 #if defined(CFG_GT_6426x) || defined(CONFIG_PN62) || defined(CONFIG_PPCHAMELEONEVB) || \
 734      defined(CONFIG_MPC8540ADS) || defined(CONFIG_MPC8560ADS)
 735         /* handle the 2nd ethernet address */
 736
 737         s = getenv ("eth1addr");
 738
 739         for (i = 0; i < 6; ++i) {
 740                 bd->bi_enet1addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 741                 if (s)
 742                         s = (*e) ? e + 1 : e;
 743         }
 744 #endif
 745 #if defined(CFG_GT_6426x) || defined(CONFIG_MPC8540ADS) || defined(CONFIG_MPC8560ADS)
 746         /* handle the 3rd ethernet address */
 747
 748         s = getenv ("eth2addr");
 749
 750         for (i = 0; i < 6; ++i) {
 751                 bd->bi_enet2addr[i] = s ? simple_strtoul (s, &e, 16) : 0;
 752                 if (s)
 753                         s = (*e) ? e + 1 : e;
 754         }
 755 #endif
 756
 757
 758 #if defined(CONFIG_TQM8xxL) || defined(CONFIG_TQM8260) || \
 759     defined(CONFIG_CCM)
 760         load_sernum_ethaddr ();
 761 #endif
 762         /* IP Address */
 763         bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 764
 765         WATCHDOG_RESET ();
 766
 767 #if defined(CONFIG_PCI) && !defined(CONFIG_BAB7xx)
 768         /*
 769          * Do pci configuration
 770          */
 771         pci_init ();
 772 #endif
 773
 774 /** leave this here (after malloc(), environment and PCI are working) **/
 775         /* Initialize devices */
 776         devices_init ();
 777
 778         /* Initialize the jump table for applications */
 779         jumptable_init ();
 780
 781         /* Initialize the console (after the relocation and devices init) */
 782         console_init_r ();
 783
 784 #if defined(CONFIG_CCM)         || \
 785     defined(CONFIG_COGENT)      || \
 786     defined(CONFIG_CPCI405)     || \
 787     defined(CONFIG_EVB64260)    || \
 788     defined(CONFIG_KUP4K)       || \
 789     defined(CONFIG_LWMON)       || \
 790     defined(CONFIG_PCU_E)       || \
 791     defined(CONFIG_W7O)         || \
 792     defined(CONFIG_MISC_INIT_R)
 793         /* miscellaneous platform dependent initialisations */
 794         misc_init_r ();
 795 #endif
 796
 797 #ifdef  CONFIG_HERMES
 798         if (bd->bi_ethspeed != 0xFFFF)
 799                 hermes_start_lxt980 ((int) bd->bi_ethspeed);
 800 #endif
 801
 802 #if (CONFIG_COMMANDS & CFG_CMD_NET) && ( \
 803     defined(CONFIG_CCM)         || \
 804     defined(CONFIG_ELPT860)     || \
 805     defined(CONFIG_EP8260)      || \
 806     defined(CONFIG_IP860)       || \
 807     defined(CONFIG_IVML24)      || \
 808     defined(CONFIG_IVMS8)       || \
 809     defined(CONFIG_LWMON)       || \
 810     defined(CONFIG_MPC8260ADS)  || \
 811     defined(CONFIG_MPC8266ADS)  || \
 812     defined(CONFIG_MPC8560ADS)  || \
 813     defined(CONFIG_PCU_E)       || \
 814     defined(CONFIG_RPXSUPER)    || \
 815     defined(CONFIG_SPD823TS)    )
 816
 817         WATCHDOG_RESET ();
 818         debug ("Reset Ethernet PHY\n");
 819         reset_phy ();
 820 #endif
 821
 822 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
 823         WATCHDOG_RESET ();
 824         puts ("KGDB:  ");
 825         kgdb_init ();
 826 #endif
 827
 828         debug ("U-Boot relocated to %08lx\n", dest_addr);
 829
 830         /*
 831          * Enable Interrupts
 832          */
 833         interrupt_init ();
 834
 835         /* Must happen after interrupts are initialized since
 836          * an irq handler gets installed
 837          */
 838 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 839         serial_buffered_init();
 840 #endif
 841
 842 #ifdef CONFIG_STATUS_LED
 843         status_led_set (STATUS_LED_BOOT, STATUS_LED_BLINKING);
 844 #endif
 845
 846         udelay (20);
 847
 848         set_timer (0);
 849
 850         /* Insert function pointers now that we have relocated the code */
 851
 852         /* Initialize from environment */
 853         if ((s = getenv ("loadaddr")) != NULL) {
 854                 load_addr = simple_strtoul (s, NULL, 16);
 855         }
 856 #if (CONFIG_COMMANDS & CFG_CMD_NET)
 857         if ((s = getenv ("bootfile")) != NULL) {
 858                 copy_filename (BootFile, s, sizeof (BootFile));
 859         }
 860 #endif /* CFG_CMD_NET */
 861
 862         WATCHDOG_RESET ();
 863
 864 #if (CONFIG_COMMANDS & CFG_CMD_SCSI)
 865         WATCHDOG_RESET ();
 866         puts ("SCSI:  ");
 867         scsi_init ();
 868 #endif
 869
 870 #if (CONFIG_COMMANDS & CFG_CMD_DOC)
 871         WATCHDOG_RESET ();
 872         puts ("DOC:   ");
 873         doc_init ();
 874 #endif
 875
 876 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
 877         WATCHDOG_RESET ();
 878         puts ("NAND:");
 879         nand_init();            /* go init the NAND */
 880 #endif
 881
 882 #if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
 883         WATCHDOG_RESET ();
 884         puts ("Net:   ");
 885         eth_initialize (bd);
 886 #endif
 887
 888 #ifdef CONFIG_POST
 889         post_run (NULL, POST_RAM | post_bootmode_get(0));
 890 #endif
 891
 892 #if (CONFIG_COMMANDS & CFG_CMD_PCMCIA) && !(CONFIG_COMMANDS & CFG_CMD_IDE)
 893         WATCHDOG_RESET ();
 894         puts ("PCMCIA:");
 895         pcmcia_init ();
 896 #endif
 897
 898 #if (CONFIG_COMMANDS & CFG_CMD_IDE)
 899         WATCHDOG_RESET ();
 900 # ifdef CONFIG_IDE_8xx_PCCARD
 901         puts ("PCMCIA:");
 902 # else
 903         puts ("IDE:   ");
 904 #endif
 905         ide_init ();
 906 #endif /* CFG_CMD_IDE */
 907
 908 #ifdef CONFIG_LAST_STAGE_INIT
 909         WATCHDOG_RESET ();
 910         /*
 911          * Some parts can be only initialized if all others (like
 912          * Interrupts) are up and running (i.e. the PC-style ISA
 913          * keyboard).
 914          */
 915         last_stage_init ();
 916 #endif
 917
 918 #if (CONFIG_COMMANDS & CFG_CMD_BEDBUG)
 919         WATCHDOG_RESET ();
 920         bedbug_init ();
 921 #endif
 922
 923 #if defined(CONFIG_PRAM) || defined(CONFIG_LOGBUFFER)
 924         /*
 925          * Export available size of memory for Linux,
 926          * taking into account the protected RAM at top of memory
 927          */
 928         {
 929                 ulong pram;
 930                 uchar memsz[32];
 931 #ifdef CONFIG_PRAM
 932                 char *s;
 933
 934                 if ((s = getenv ("pram")) != NULL) {
 935                         pram = simple_strtoul (s, NULL, 10);
 936                 } else {
 937                         pram = CONFIG_PRAM;
 938                 }
 939 #else
 940                 pram=0;
 941 #endif
 942 #ifdef CONFIG_LOGBUFFER
 943                 /* Also take the logbuffer into account (pram is in kB) */
 944                 pram += (LOGBUFF_LEN+LOGBUFF_OVERHEAD)/1024;
 945 #endif
 946                 sprintf (memsz, "%ldk", (bd->bi_memsize / 1024) - pram);
 947                 setenv ("mem", memsz);
 948         }
 949 #endif
 950
 951 #ifdef CONFIG_MODEM_SUPPORT
 952  {
 953          extern int do_mdm_init;
 954          do_mdm_init = gd->do_mdm_init;
 955  }
 956 #endif
 957
 958         /* Initialization complete - start the monitor */
 959
 960         /* main_loop() can return to retry autoboot, if so just run it again. */
 961         for (;;) {
 962                 WATCHDOG_RESET ();
 963                 main_loop ();
 964         }
 965
 966         /* NOTREACHED - no way out of command loop except booting */
 967 }
 968
 969 void hang (void)
 970 {
 971         puts ("### ERROR ### Please RESET the board ###\n");
 972         for (;;);
 973 }
 974
 975 #ifdef CONFIG_MODEM_SUPPORT
 976 /* called from main loop (common/main.c) */
 977 extern void  dbg(const char *fmt, ...);
 978 int mdm_init (void)
 979 {
 980         char env_str[16];
 981         char *init_str;
 982         int i;
 983         extern char console_buffer[];
 984         static inline void mdm_readline(char *buf, int bufsiz);
 985         extern void enable_putc(void);
 986         extern int hwflow_onoff(int);
 987
 988         enable_putc(); /* enable serial_putc() */
 989
 990 #ifdef CONFIG_HWFLOW
 991         init_str = getenv("mdm_flow_control");
 992         if (init_str && (strcmp(init_str, "rts/cts") == 0))
 993                 hwflow_onoff (1);
 994         else
 995                 hwflow_onoff(-1);
 996 #endif
 997
 998         for (i = 1;;i++) {
 999                 sprintf(env_str, "mdm_init%d", i);
1000                 if ((init_str = getenv(env_str)) != NULL) {
1001                         serial_puts(init_str);
1002                         serial_puts("\n");
1003                         for(;;) {
1004                                 mdm_readline(console_buffer, CFG_CBSIZE);
1005                                 dbg("ini%d: [%s]", i, console_buffer);
1006
1007                                 if ((strcmp(console_buffer, "OK") == 0) ||
1008                                         (strcmp(console_buffer, "ERROR") == 0)) {
1009                                         dbg("ini%d: cmd done", i);
1010                                         break;
1011                                 } else /* in case we are originating call ... */
1012                                         if (strncmp(console_buffer, "CONNECT", 7) == 0) {
1013                                                 dbg("ini%d: connect", i);
1014                                                 return 0;
1015                                         }
1016                         }
1017                 } else
1018                         break; /* no init string - stop modem init */
1019
1020                 udelay(100000);
1021         }
1022
1023         udelay(100000);
1024
1025         /* final stage - wait for connect */
1026         for(;i > 1;) { /* if 'i' > 1 - wait for connection
1027                                   message from modem */
1028                 mdm_readline(console_buffer, CFG_CBSIZE);
1029                 dbg("ini_f: [%s]", console_buffer);
1030                 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
1031                         dbg("ini_f: connected");
1032                         return 0;
1033                 }
1034         }
1035
1036         return 0;
1037 }
1038
1039 /* 'inline' - We have to do it fast */
1040 static inline void mdm_readline(char *buf, int bufsiz)
1041 {
1042         char c;
1043         char *p;
1044         int n;
1045
1046         n = 0;
1047         p = buf;
1048         for(;;) {
1049                 c = serial_getc();
1050
1051                 /*              dbg("(%c)", c); */
1052
1053                 switch(c) {
1054                 case '\r':
1055                         break;
1056                 case '\n':
1057                         *p = '\0';
1058                         return;
1059
1060                 default:
1061                         if(n++ > bufsiz) {
1062                                 *p = '\0';
1063                                 return; /* sanity check */
1064                         }
1065                         *p = c;
1066                         p++;
1067                         break;
1068                 }
1069         }
1070 }
1071 #endif
1072
1073 #if 0 /* We could use plain global data, but the resulting code is bigger */
1074 /*
1075  * Pointer to initial global data area
1076  *
1077  * Here we initialize it.
1078  */
1079 #undef  XTRN_DECLARE_GLOBAL_DATA_PTR
1080 #define XTRN_DECLARE_GLOBAL_DATA_PTR    /* empty = allocate here */
1081 DECLARE_GLOBAL_DATA_PTR = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
1082 #endif  /* 0 */
1083
1084 /************************************************************************/