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 void inline __coloured_LED_init (void) {}
 129 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
 130 void inline __red_LED_on (void) {}
 131 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
 132 void inline __red_LED_off(void) {}
 133 void inline red_LED_off(void)        __attribute__((weak, alias("__red_LED_off")));
 134 void inline __green_LED_on(void) {}
 135 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
 136 void inline __green_LED_off(void) {}
 137 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
 138 void inline __yellow_LED_on(void) {}
 139 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
 140 void inline __yellow_LED_off(void) {}
 141 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
 142
 143 /************************************************************************
 144  * Init Utilities                                                       *
 145  ************************************************************************
 146  * Some of this code should be moved into the core functions,
 147  * or dropped completely,
 148  * but let's get it working (again) first...
 149  */
 150
 151 static int init_baudrate (void)
 152 {
 153         char tmp[64];   /* long enough for environment variables */
 154         int i = getenv_r ("baudrate", tmp, sizeof (tmp));
 155         gd->bd->bi_baudrate = gd->baudrate = (i > 0)
 156                         ? (int) simple_strtoul (tmp, NULL, 10)
 157                         : CONFIG_BAUDRATE;
 158
 159         return (0);
 160 }
 161
 162 static int display_banner (void)
 163 {
 164         printf ("\n\n%s\n\n", version_string);
 165         debug ("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
 166                _armboot_start, _bss_start, _bss_end);
 167 #ifdef CONFIG_MODEM_SUPPORT
 168         debug ("Modem Support enabled\n");
 169 #endif
 170 #ifdef CONFIG_USE_IRQ
 171         debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
 172         debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
 173 #endif
 174
 175         return (0);
 176 }
 177
 178 /*
 179  * WARNING: this code looks "cleaner" than the PowerPC version, but
 180  * has the disadvantage that you either get nothing, or everything.
 181  * On PowerPC, you might see "DRAM: " before the system hangs - which
 182  * gives a simple yet clear indication which part of the
 183  * initialization if failing.
 184  */
 185 static int display_dram_config (void)
 186 {
 187         int i;
 188
 189 #ifdef DEBUG
 190         puts ("RAM Configuration:\n");
 191
 192         for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 193                 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
 194                 print_size (gd->bd->bi_dram[i].size, "\n");
 195         }
 196 #else
 197         ulong size = 0;
 198
 199         for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 200                 size += gd->bd->bi_dram[i].size;
 201         }
 202         puts("DRAM:  ");
 203         print_size(size, "\n");
 204 #endif
 205
 206         return (0);
 207 }
 208
 209 #ifndef CFG_NO_FLASH
 210 static void display_flash_config (ulong size)
 211 {
 212         puts ("Flash: ");
 213         print_size (size, "\n");
 214 }
 215 #endif /* CFG_NO_FLASH */
 216
 217 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 218 static int init_func_i2c (void)
 219 {
 220         puts ("I2C:   ");
 221         i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
 222         puts ("ready\n");
 223         return (0);
 224 }
 225 #endif
 226
 227 /*
 228  * Breathe some life into the board...
 229  *
 230  * Initialize a serial port as console, and carry out some hardware
 231  * tests.
 232  *
 233  * The first part of initialization is running from Flash memory;
 234  * its main purpose is to initialize the RAM so that we
 235  * can relocate the monitor code to RAM.
 236  */
 237
 238 /*
 239  * All attempts to come up with a "common" initialization sequence
 240  * that works for all boards and architectures failed: some of the
 241  * requirements are just _too_ different. To get rid of the resulting
 242  * mess of board dependent #ifdef'ed code we now make the whole
 243  * initialization sequence configurable to the user.
 244  *
 245  * The requirements for any new initalization function is simple: it
 246  * receives a pointer to the "global data" structure as it's only
 247  * argument, and returns an integer return code, where 0 means
 248  * "continue" and != 0 means "fatal error, hang the system".
 249  */
 250 typedef int (init_fnc_t) (void);
 251
 252 int print_cpuinfo (void); /* test-only */
 253
 254 init_fnc_t *init_sequence[] = {
 255         cpu_init,               /* basic cpu dependent setup */
 256         board_init,             /* basic board dependent setup */
 257         interrupt_init,         /* set up exceptions */
 258         env_init,               /* initialize environment */
 259         init_baudrate,          /* initialze baudrate settings */
 260         serial_init,            /* serial communications setup */
 261         console_init_f,         /* stage 1 init of console */
 262         display_banner,         /* say that we are here */
 263 #if defined(CONFIG_DISPLAY_CPUINFO)
 264         print_cpuinfo,          /* display cpu info (and speed) */
 265 #endif
 266 #if defined(CONFIG_DISPLAY_BOARDINFO)
 267         checkboard,             /* display board info */
 268 #endif
 269 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 270         init_func_i2c,
 271 #endif
 272         dram_init,              /* configure available RAM banks */
 273         display_dram_config,
 274         NULL,
 275 };
 276
 277 void start_armboot (void)
 278 {
 279         init_fnc_t **init_fnc_ptr;
 280         char *s;
 281 #ifndef CFG_NO_FLASH
 282         ulong size;
 283 #endif
 284 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
 285         unsigned long addr;
 286 #endif
 287
 288         /* Pointer is writable since we allocated a register for it */
 289         gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
 290         /* compiler optimization barrier needed for GCC >= 3.4 */
 291         __asm__ __volatile__("": : :"memory");
 292
 293         memset ((void*)gd, 0, sizeof (gd_t));
 294         gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
 295         memset (gd->bd, 0, sizeof (bd_t));
 296
 297         monitor_flash_len = _bss_start - _armboot_start;
 298
 299         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 300                 if ((*init_fnc_ptr)() != 0) {
 301                         hang ();
 302                 }
 303         }
 304
 305 #ifndef CFG_NO_FLASH
 306         /* configure available FLASH banks */
 307         size = flash_init ();
 308         display_flash_config (size);
 309 #endif /* CFG_NO_FLASH */
 310
 311 #ifdef CONFIG_VFD
 312 #       ifndef PAGE_SIZE
 313 #         define PAGE_SIZE 4096
 314 #       endif
 315         /*
 316          * reserve memory for VFD display (always full pages)
 317          */
 318         /* bss_end is defined in the board-specific linker script */
 319         addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 320         size = vfd_setmem (addr);
 321         gd->fb_base = addr;
 322 #endif /* CONFIG_VFD */
 323
 324 #ifdef CONFIG_LCD
 325 #       ifndef PAGE_SIZE
 326 #         define PAGE_SIZE 4096
 327 #       endif
 328         /*
 329          * reserve memory for LCD display (always full pages)
 330          */
 331         /* bss_end is defined in the board-specific linker script */
 332         addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 333         size = lcd_setmem (addr);
 334         gd->fb_base = addr;
 335 #endif /* CONFIG_LCD */
 336
 337         /* armboot_start is defined in the board-specific linker script */
 338         mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
 339
 340 #if defined(CONFIG_CMD_NAND)
 341         puts ("NAND:  ");
 342         nand_init();            /* go init the NAND */
 343 #endif
 344
 345 #if defined(CONFIG_CMD_ONENAND)
 346         onenand_init();
 347 #endif
 348
 349 #ifdef CONFIG_HAS_DATAFLASH
 350         AT91F_DataflashInit();
 351         dataflash_print_info();
 352 #endif
 353
 354         /* initialize environment */
 355         env_relocate ();
 356
 357 #ifdef CONFIG_VFD
 358         /* must do this after the framebuffer is allocated */
 359         drv_vfd_init();
 360 #endif /* CONFIG_VFD */
 361
 362 #ifdef CONFIG_SERIAL_MULTI
 363         serial_initialize();
 364 #endif
 365
 366         /* IP Address */
 367         gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 368
 369         /* MAC Address */
 370         {
 371                 int i;
 372                 ulong reg;
 373                 char *s, *e;
 374                 char tmp[64];
 375
 376                 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
 377                 s = (i > 0) ? tmp : NULL;
 378
 379                 for (reg = 0; reg < 6; ++reg) {
 380                         gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
 381                         if (s)
 382                                 s = (*e) ? e + 1 : e;
 383                 }
 384
 385 #ifdef CONFIG_HAS_ETH1
 386                 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
 387                 s = (i > 0) ? tmp : NULL;
 388
 389                 for (reg = 0; reg < 6; ++reg) {
 390                         gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
 391                         if (s)
 392                                 s = (*e) ? e + 1 : e;
 393                 }
 394 #endif
 395         }
 396
 397         devices_init ();        /* get the devices list going. */
 398
 399 #ifdef CONFIG_CMC_PU2
 400         load_sernum_ethaddr ();
 401 #endif /* CONFIG_CMC_PU2 */
 402
 403         jumptable_init ();
 404
 405         console_init_r ();      /* fully init console as a device */
 406
 407 #if defined(CONFIG_MISC_INIT_R)
 408         /* miscellaneous platform dependent initialisations */
 409         misc_init_r ();
 410 #endif
 411
 412         /* enable exceptions */
 413         enable_interrupts ();
 414
 415         /* Perform network card initialisation if necessary */
 416 #ifdef CONFIG_DRIVER_TI_EMAC
 417 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
 418         if (getenv ("ethaddr")) {
 419                 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
 420         }
 421 #endif
 422
 423 #ifdef CONFIG_DRIVER_CS8900
 424         cs8900_get_enetaddr (gd->bd->bi_enetaddr);
 425 #endif
 426
 427 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
 428         if (getenv ("ethaddr")) {
 429                 smc_set_mac_addr(gd->bd->bi_enetaddr);
 430         }
 431 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
 432
 433         /* Initialize from environment */
 434         if ((s = getenv ("loadaddr")) != NULL) {
 435                 load_addr = simple_strtoul (s, NULL, 16);
 436         }
 437 #if defined(CONFIG_CMD_NET)
 438         if ((s = getenv ("bootfile")) != NULL) {
 439                 copy_filename (BootFile, s, sizeof (BootFile));
 440         }
 441 #endif
 442
 443 #ifdef BOARD_LATE_INIT
 444         board_late_init ();
 445 #endif
 446 #if defined(CONFIG_CMD_NET)
 447 #if defined(CONFIG_NET_MULTI)
 448         puts ("Net:   ");
 449 #endif
 450         eth_initialize(gd->bd);
 451 #if defined(CONFIG_RESET_PHY_R)
 452         debug ("Reset Ethernet PHY\n");
 453         reset_phy();
 454 #endif
 455 #endif
 456         /* main_loop() can return to retry autoboot, if so just run it again. */
 457         for (;;) {
 458                 main_loop ();
 459         }
 460
 461         /* NOTREACHED - no way out of command loop except booting */
 462 }
 463
 464 void hang (void)
 465 {
 466         puts ("### ERROR ### Please RESET the board ###\n");
 467         for (;;);
 468 }
 469
 470 #ifdef CONFIG_MODEM_SUPPORT
 471 static inline void mdm_readline(char *buf, int bufsiz);
 472
 473 /* called from main loop (common/main.c) */
 474 extern void  dbg(const char *fmt, ...);
 475 int mdm_init (void)
 476 {
 477         char env_str[16];
 478         char *init_str;
 479         int i;
 480         extern char console_buffer[];
 481         extern void enable_putc(void);
 482         extern int hwflow_onoff(int);
 483
 484         enable_putc(); /* enable serial_putc() */
 485
 486 #ifdef CONFIG_HWFLOW
 487         init_str = getenv("mdm_flow_control");
 488         if (init_str && (strcmp(init_str, "rts/cts") == 0))
 489                 hwflow_onoff (1);
 490         else
 491                 hwflow_onoff(-1);
 492 #endif
 493
 494         for (i = 1;;i++) {
 495                 sprintf(env_str, "mdm_init%d", i);
 496                 if ((init_str = getenv(env_str)) != NULL) {
 497                         serial_puts(init_str);
 498                         serial_puts("\n");
 499                         for(;;) {
 500                                 mdm_readline(console_buffer, CFG_CBSIZE);
 501                                 dbg("ini%d: [%s]", i, console_buffer);
 502
 503                                 if ((strcmp(console_buffer, "OK") == 0) ||
 504                                         (strcmp(console_buffer, "ERROR") == 0)) {
 505                                         dbg("ini%d: cmd done", i);
 506                                         break;
 507                                 } else /* in case we are originating call ... */
 508                                         if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 509                                                 dbg("ini%d: connect", i);
 510                                                 return 0;
 511                                         }
 512                         }
 513                 } else
 514                         break; /* no init string - stop modem init */
 515
 516                 udelay(100000);
 517         }
 518
 519         udelay(100000);
 520
 521         /* final stage - wait for connect */
 522         for(;i > 1;) { /* if 'i' > 1 - wait for connection
 523                                   message from modem */
 524                 mdm_readline(console_buffer, CFG_CBSIZE);
 525                 dbg("ini_f: [%s]", console_buffer);
 526                 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 527                         dbg("ini_f: connected");
 528                         return 0;
 529                 }
 530         }
 531
 532         return 0;
 533 }
 534
 535 /* 'inline' - We have to do it fast */
 536 static inline void mdm_readline(char *buf, int bufsiz)
 537 {
 538         char c;
 539         char *p;
 540         int n;
 541
 542         n = 0;
 543         p = buf;
 544         for(;;) {
 545                 c = serial_getc();
 546
 547                 /*              dbg("(%c)", c); */
 548
 549                 switch(c) {
 550                 case '\r':
 551                         break;
 552                 case '\n':
 553                         *p = '\0';
 554                         return;
 555
 556                 default:
 557                         if(n++ > bufsiz) {
 558                                 *p = '\0';
 559                                 return; /* sanity check */
 560                         }
 561                         *p = c;
 562                         p++;
 563                         break;
 564                 }
 565         }
 566 }
 567 #endif  /* CONFIG_MODEM_SUPPORT */