lib_arm/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 <malloc.h>
  44 #include <devices.h>
  45 #include <version.h>
  46 #include <net.h>
  47
  48 #ifdef CONFIG_DRIVER_SMC91111
  49 #include "../drivers/net/smc91111.h"
  50 #endif
  51 #ifdef CONFIG_DRIVER_LAN91C96
  52 #include "../drivers/net/lan91c96.h"
  53 #endif
  54
  55 DECLARE_GLOBAL_DATA_PTR;
  56
  57 #if defined(CONFIG_CMD_NAND)
  58 void nand_init (void);
  59 #endif
  60
  61 #if defined(CONFIG_CMD_ONENAND)
  62 void onenand_init(void);
  63 #endif
  64
  65 ulong monitor_flash_len;
  66
  67 #ifdef CONFIG_HAS_DATAFLASH
  68 extern int  AT91F_DataflashInit(void);
  69 extern void dataflash_print_info(void);
  70 #endif
  71
  72 #ifndef CONFIG_IDENT_STRING
  73 #define CONFIG_IDENT_STRING ""
  74 #endif
  75
  76 const char version_string[] =
  77         U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")"CONFIG_IDENT_STRING;
  78
  79 #ifdef CONFIG_DRIVER_CS8900
  80 extern void cs8900_get_enetaddr (uchar * addr);
  81 #endif
  82
  83 #ifdef CONFIG_DRIVER_RTL8019
  84 extern void rtl8019_get_enetaddr (uchar * addr);
  85 #endif
  86
  87 #if defined(CONFIG_HARD_I2C) || \
  88     defined(CONFIG_SOFT_I2C)
  89 #include <i2c.h>
  90 #endif
  91
  92 /*
  93  * Begin and End of memory area for malloc(), and current "brk"
  94  */
  95 static ulong mem_malloc_start = 0;
  96 static ulong mem_malloc_end = 0;
  97 static ulong mem_malloc_brk = 0;
  98
  99 static
 100 void mem_malloc_init (ulong dest_addr)
 101 {
 102         mem_malloc_start = dest_addr;
 103         mem_malloc_end = dest_addr + CFG_MALLOC_LEN;
 104         mem_malloc_brk = mem_malloc_start;
 105
 106         memset ((void *) mem_malloc_start, 0,
 107                         mem_malloc_end - mem_malloc_start);
 108 }
 109
 110 void *sbrk (ptrdiff_t increment)
 111 {
 112         ulong old = mem_malloc_brk;
 113         ulong new = old + increment;
 114
 115         if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
 116                 return (NULL);
 117         }
 118         mem_malloc_brk = new;
 119
 120         return ((void *) old);
 121 }
 122
 123 /************************************************************************
 124  * Coloured LED functionality
 125  ************************************************************************
 126  * May be supplied by boards if desired
 127  */
 128 #ifndef CONFIG_MINI2440
 129 void inline __coloured_LED_init (void) {}
 130 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
 131 void inline __red_LED_on (void) {}
 132 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
 133 void inline __red_LED_off(void) {}
 134 void inline red_LED_off(void)        __attribute__((weak, alias("__red_LED_off")));
 135 void inline __green_LED_on(void) {}
 136 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
 137 void inline __green_LED_off(void) {}
 138 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
 139 void inline __yellow_LED_on(void) {}
 140 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
 141 void inline __yellow_LED_off(void) {}
 142 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
 143 #endif
 144
 145 /************************************************************************
 146  * Init Utilities                                                       *
 147  ************************************************************************
 148  * Some of this code should be moved into the core functions,
 149  * or dropped completely,
 150  * but let's get it working (again) first...
 151  */
 152
 153 static int init_baudrate (void)
 154 {
 155         char tmp[64];   /* long enough for environment variables */
 156         int i = getenv_r ("baudrate", tmp, sizeof (tmp));
 157         gd->bd->bi_baudrate = gd->baudrate = (i > 0)
 158                         ? (int) simple_strtoul (tmp, NULL, 10)
 159                         : CONFIG_BAUDRATE;
 160
 161         return (0);
 162 }
 163
 164 static int display_banner (void)
 165 {
 166         printf ("\n\n%s\n\n", version_string);
 167         debug ("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
 168                _armboot_start, _bss_start, _bss_end);
 169 #ifdef CONFIG_MODEM_SUPPORT
 170         debug ("Modem Support enabled\n");
 171 #endif
 172 #ifdef CONFIG_USE_IRQ
 173         debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
 174         debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
 175 #endif
 176
 177         return (0);
 178 }
 179
 180 /*
 181  * WARNING: this code looks "cleaner" than the PowerPC version, but
 182  * has the disadvantage that you either get nothing, or everything.
 183  * On PowerPC, you might see "DRAM: " before the system hangs - which
 184  * gives a simple yet clear indication which part of the
 185  * initialization if failing.
 186  */
 187 static int display_dram_config (void)
 188 {
 189         int i;
 190
 191 #ifdef DEBUG
 192         puts ("RAM Configuration:\n");
 193
 194         for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 195                 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
 196                 print_size (gd->bd->bi_dram[i].size, "\n");
 197         }
 198 #else
 199         ulong size = 0;
 200
 201         for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 202                 size += gd->bd->bi_dram[i].size;
 203         }
 204         puts("DRAM:  ");
 205         print_size(size, "\n");
 206 #endif
 207
 208         return (0);
 209 }
 210
 211 #ifndef CFG_NO_FLASH
 212 static void display_flash_config (ulong size)
 213 {
 214         puts ("Flash: ");
 215         print_size (size, "\n");
 216 }
 217 #endif /* CFG_NO_FLASH */
 218
 219 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 220 static int init_func_i2c (void)
 221 {
 222         puts ("I2C:   ");
 223         i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
 224         puts ("ready\n");
 225         return (0);
 226 }
 227 #endif
 228
 229 /*
 230  * Breathe some life into the board...
 231  *
 232  * Initialize a serial port as console, and carry out some hardware
 233  * tests.
 234  *
 235  * The first part of initialization is running from Flash memory;
 236  * its main purpose is to initialize the RAM so that we
 237  * can relocate the monitor code to RAM.
 238  */
 239
 240 /*
 241  * All attempts to come up with a "common" initialization sequence
 242  * that works for all boards and architectures failed: some of the
 243  * requirements are just _too_ different. To get rid of the resulting
 244  * mess of board dependent #ifdef'ed code we now make the whole
 245  * initialization sequence configurable to the user.
 246  *
 247  * The requirements for any new initalization function is simple: it
 248  * receives a pointer to the "global data" structure as it's only
 249  * argument, and returns an integer return code, where 0 means
 250  * "continue" and != 0 means "fatal error, hang the system".
 251  */
 252 typedef int (init_fnc_t) (void);
 253
 254 int print_cpuinfo (void); /* test-only */
 255
 256 init_fnc_t *init_sequence[] = {
 257         cpu_init,               /* basic cpu dependent setup */
 258         board_init,             /* basic board dependent setup */
 259         interrupt_init,         /* set up exceptions */
 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         display_dram_config,
 276         NULL,
 277 };
 278
 279 void start_armboot (void)
 280 {
 281         init_fnc_t **init_fnc_ptr;
 282         char *s;
 283 #ifndef CFG_NO_FLASH
 284         ulong size;
 285 #endif
 286 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
 287         unsigned long addr;
 288 #endif
 289
 290         /* Pointer is writable since we allocated a register for it */
 291         gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
 292         /* compiler optimization barrier needed for GCC >= 3.4 */
 293         __asm__ __volatile__("": : :"memory");
 294
 295         memset ((void*)gd, 0, sizeof (gd_t));
 296         gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
 297         memset (gd->bd, 0, sizeof (bd_t));
 298
 299         monitor_flash_len = _bss_start - _armboot_start;
 300
 301         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 302                 if ((*init_fnc_ptr)() != 0) {
 303                         hang ();
 304                 }
 305         }
 306
 307 #ifndef CFG_NO_FLASH
 308         /* configure available FLASH banks */
 309         size = flash_init ();
 310         display_flash_config (size);
 311 #endif /* CFG_NO_FLASH */
 312
 313 #ifdef CONFIG_VFD
 314 #       ifndef PAGE_SIZE
 315 #         define PAGE_SIZE 4096
 316 #       endif
 317         /*
 318          * reserve memory for VFD display (always full pages)
 319          */
 320         /* bss_end is defined in the board-specific linker script */
 321         addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 322         size = vfd_setmem (addr);
 323         gd->fb_base = addr;
 324 #endif /* CONFIG_VFD */
 325
 326 #ifdef CONFIG_LCD
 327 #       ifndef PAGE_SIZE
 328 #         define PAGE_SIZE 4096
 329 #       endif
 330         /*
 331          * reserve memory for LCD display (always full pages)
 332          */
 333         /* bss_end is defined in the board-specific linker script */
 334         addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 335         size = lcd_setmem (addr);
 336         gd->fb_base = addr;
 337 #endif /* CONFIG_LCD */
 338
 339         /* armboot_start is defined in the board-specific linker script */
 340         mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
 341
 342 #if defined(CONFIG_CMD_NAND)
 343         puts ("NAND:  ");
 344         nand_init();            /* go init the NAND */
 345 #endif
 346
 347 #if defined(CONFIG_CMD_ONENAND)
 348         onenand_init();
 349 #endif
 350
 351 #ifdef CONFIG_HAS_DATAFLASH
 352         AT91F_DataflashInit();
 353         dataflash_print_info();
 354 #endif
 355
 356         /* initialize environment */
 357         env_relocate ();
 358
 359 #ifdef CONFIG_VFD
 360         /* must do this after the framebuffer is allocated */
 361         drv_vfd_init();
 362 #endif /* CONFIG_VFD */
 363
 364 #ifdef CONFIG_SERIAL_MULTI
 365         serial_initialize();
 366 #endif
 367
 368         /* IP Address */
 369         gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 370
 371         /* MAC Address */
 372         {
 373                 int i;
 374                 ulong reg;
 375                 char *s, *e;
 376                 char tmp[64];
 377
 378                 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
 379                 s = (i > 0) ? tmp : NULL;
 380
 381                 for (reg = 0; reg < 6; ++reg) {
 382                         gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
 383                         if (s)
 384                                 s = (*e) ? e + 1 : e;
 385                 }
 386
 387 #ifdef CONFIG_HAS_ETH1
 388                 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
 389                 s = (i > 0) ? tmp : NULL;
 390
 391                 for (reg = 0; reg < 6; ++reg) {
 392                         gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
 393                         if (s)
 394                                 s = (*e) ? e + 1 : e;
 395                 }
 396 #endif
 397         }
 398
 399         devices_init ();        /* get the devices list going. */
 400
 401 #ifdef CONFIG_CMC_PU2
 402         load_sernum_ethaddr ();
 403 #endif /* CONFIG_CMC_PU2 */
 404
 405         jumptable_init ();
 406
 407         console_init_r ();      /* fully init console as a device */
 408
 409 #if defined(CONFIG_MISC_INIT_R)
 410         /* miscellaneous platform dependent initialisations */
 411         misc_init_r ();
 412 #endif
 413
 414         /* enable exceptions */
 415         enable_interrupts ();
 416
 417         /* Perform network card initialisation if necessary */
 418 #ifdef CONFIG_DRIVER_TI_EMAC
 419 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
 420         if (getenv ("ethaddr")) {
 421                 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
 422         }
 423 #endif
 424
 425 #if defined(CONFIG_DRIVER_DM9000) && defined(CONFIG_DRIVER_DM9000_NO_EEPROM)
 426 extern int eth_set_mac(bd_t * bd);
 427         if (getenv ("ethaddr")) {
 428                 eth_set_mac(gd->bd);
 429         }
 430 #endif
 431
 432 #ifdef CONFIG_DRIVER_CS8900
 433         cs8900_get_enetaddr (gd->bd->bi_enetaddr);
 434 #endif
 435
 436 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
 437         if (getenv ("ethaddr")) {
 438                 smc_set_mac_addr(gd->bd->bi_enetaddr);
 439         }
 440 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
 441
 442         /* Initialize from environment */
 443         if ((s = getenv ("loadaddr")) != NULL) {
 444                 load_addr = simple_strtoul (s, NULL, 16);
 445         }
 446 #if defined(CONFIG_CMD_NET)
 447         if ((s = getenv ("bootfile")) != NULL) {
 448                 copy_filename (BootFile, s, sizeof (BootFile));
 449         }
 450 #endif
 451
 452 #ifdef BOARD_LATE_INIT
 453         board_late_init ();
 454 #endif
 455 #if defined(CONFIG_CMD_NET)
 456 #if defined(CONFIG_NET_MULTI)
 457         puts ("Net:   ");
 458 #endif
 459         eth_initialize(gd->bd);
 460 #if defined(CONFIG_RESET_PHY_R)
 461         debug ("Reset Ethernet PHY\n");
 462         reset_phy();
 463 #endif
 464 #endif
 465         /* main_loop() can return to retry autoboot, if so just run it again. */
 466         for (;;) {
 467                 main_loop ();
 468         }
 469
 470         /* NOTREACHED - no way out of command loop except booting */
 471 }
 472
 473 void hang (void)
 474 {
 475         puts ("### ERROR ### Please RESET the board ###\n");
 476         for (;;);
 477 }
 478
 479 #ifdef CONFIG_MODEM_SUPPORT
 480 static inline void mdm_readline(char *buf, int bufsiz);
 481
 482 /* called from main loop (common/main.c) */
 483 extern void  dbg(const char *fmt, ...);
 484 int mdm_init (void)
 485 {
 486         char env_str[16];
 487         char *init_str;
 488         int i;
 489         extern char console_buffer[];
 490         extern void enable_putc(void);
 491         extern int hwflow_onoff(int);
 492
 493         enable_putc(); /* enable serial_putc() */
 494
 495 #ifdef CONFIG_HWFLOW
 496         init_str = getenv("mdm_flow_control");
 497         if (init_str && (strcmp(init_str, "rts/cts") == 0))
 498                 hwflow_onoff (1);
 499         else
 500                 hwflow_onoff(-1);
 501 #endif
 502
 503         for (i = 1;;i++) {
 504                 sprintf(env_str, "mdm_init%d", i);
 505                 if ((init_str = getenv(env_str)) != NULL) {
 506                         serial_puts(init_str);
 507                         serial_puts("\n");
 508                         for(;;) {
 509                                 mdm_readline(console_buffer, CFG_CBSIZE);
 510                                 dbg("ini%d: [%s]", i, console_buffer);
 511
 512                                 if ((strcmp(console_buffer, "OK") == 0) ||
 513                                         (strcmp(console_buffer, "ERROR") == 0)) {
 514                                         dbg("ini%d: cmd done", i);
 515                                         break;
 516                                 } else /* in case we are originating call ... */
 517                                         if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 518                                                 dbg("ini%d: connect", i);
 519                                                 return 0;
 520                                         }
 521                         }
 522                 } else
 523                         break; /* no init string - stop modem init */
 524
 525                 udelay(100000);
 526         }
 527
 528         udelay(100000);
 529
 530         /* final stage - wait for connect */
 531         for(;i > 1;) { /* if 'i' > 1 - wait for connection
 532                                   message from modem */
 533                 mdm_readline(console_buffer, CFG_CBSIZE);
 534                 dbg("ini_f: [%s]", console_buffer);
 535                 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 536                         dbg("ini_f: connected");
 537                         return 0;
 538                 }
 539         }
 540
 541         return 0;
 542 }
 543
 544 /* 'inline' - We have to do it fast */
 545 static inline void mdm_readline(char *buf, int bufsiz)
 546 {
 547         char c;
 548         char *p;
 549         int n;
 550
 551         n = 0;
 552         p = buf;
 553         for(;;) {
 554                 c = serial_getc();
 555
 556                 /*              dbg("(%c)", c); */
 557
 558                 switch(c) {
 559                 case '\r':
 560                         break;
 561                 case '\n':
 562                         *p = '\0';
 563                         return;
 564
 565                 default:
 566                         if(n++ > bufsiz) {
 567                                 *p = '\0';
 568                                 return; /* sanity check */
 569                         }
 570                         *p = c;
 571                         p++;
 572                         break;
 573                 }
 574         }
 575 }
 576 #endif  /* CONFIG_MODEM_SUPPORT */