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/smc91111.h"
  50 #endif
  51 #ifdef CONFIG_DRIVER_LAN91C96
  52 #include "../drivers/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 /*
  88  * Begin and End of memory area for malloc(), and current "brk"
  89  */
  90 static ulong mem_malloc_start = 0;
  91 static ulong mem_malloc_end = 0;
  92 static ulong mem_malloc_brk = 0;
  93
  94 static
  95 void mem_malloc_init (ulong dest_addr)
  96 {
  97         mem_malloc_start = dest_addr;
  98         mem_malloc_end = dest_addr + CFG_MALLOC_LEN;
  99         mem_malloc_brk = mem_malloc_start;
 100
 101         memset ((void *) mem_malloc_start, 0,
 102                         mem_malloc_end - mem_malloc_start);
 103 }
 104
 105 void *sbrk (ptrdiff_t increment)
 106 {
 107         ulong old = mem_malloc_brk;
 108         ulong new = old + increment;
 109
 110         if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
 111                 return (NULL);
 112         }
 113         mem_malloc_brk = new;
 114
 115         return ((void *) old);
 116 }
 117
 118 /************************************************************************
 119  * Coloured LED functionality
 120  ************************************************************************
 121  * May be supplied by boards if desired
 122  */
 123 void inline __coloured_LED_init (void) {}
 124 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
 125 void inline __red_LED_on (void) {}
 126 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
 127 void inline __red_LED_off(void) {}
 128 void inline red_LED_off(void)        __attribute__((weak, alias("__red_LED_off")));
 129 void inline __green_LED_on(void) {}
 130 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
 131 void inline __green_LED_off(void) {}
 132 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
 133 void inline __yellow_LED_on(void) {}
 134 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
 135 void inline __yellow_LED_off(void) {}
 136 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
 137
 138 /************************************************************************
 139  * Init Utilities                                                       *
 140  ************************************************************************
 141  * Some of this code should be moved into the core functions,
 142  * or dropped completely,
 143  * but let's get it working (again) first...
 144  */
 145
 146 static int init_baudrate (void)
 147 {
 148         char tmp[64];   /* long enough for environment variables */
 149         int i = getenv_r ("baudrate", tmp, sizeof (tmp));
 150         gd->bd->bi_baudrate = gd->baudrate = (i > 0)
 151                         ? (int) simple_strtoul (tmp, NULL, 10)
 152                         : CONFIG_BAUDRATE;
 153
 154         return (0);
 155 }
 156
 157 static int display_banner (void)
 158 {
 159         printf ("\n\n%s\n\n", version_string);
 160         debug ("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
 161                _armboot_start, _bss_start, _bss_end);
 162 #ifdef CONFIG_MODEM_SUPPORT
 163         debug ("Modem Support enabled\n");
 164 #endif
 165 #ifdef CONFIG_USE_IRQ
 166         debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
 167         debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
 168 #endif
 169
 170         return (0);
 171 }
 172
 173 /*
 174  * WARNING: this code looks "cleaner" than the PowerPC version, but
 175  * has the disadvantage that you either get nothing, or everything.
 176  * On PowerPC, you might see "DRAM: " before the system hangs - which
 177  * gives a simple yet clear indication which part of the
 178  * initialization if failing.
 179  */
 180 static int display_dram_config (void)
 181 {
 182         int i;
 183
 184 #ifdef DEBUG
 185         puts ("RAM Configuration:\n");
 186
 187         for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 188                 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
 189                 print_size (gd->bd->bi_dram[i].size, "\n");
 190         }
 191 #else
 192         ulong size = 0;
 193
 194         for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 195                 size += gd->bd->bi_dram[i].size;
 196         }
 197         puts("DRAM:  ");
 198         print_size(size, "\n");
 199 #endif
 200
 201         return (0);
 202 }
 203
 204 #ifndef CFG_NO_FLASH
 205 static void display_flash_config (ulong size)
 206 {
 207         puts ("Flash: ");
 208         print_size (size, "\n");
 209 }
 210 #endif /* CFG_NO_FLASH */
 211
 212 /*
 213  * Breathe some life into the board...
 214  *
 215  * Initialize a serial port as console, and carry out some hardware
 216  * tests.
 217  *
 218  * The first part of initialization is running from Flash memory;
 219  * its main purpose is to initialize the RAM so that we
 220  * can relocate the monitor code to RAM.
 221  */
 222
 223 /*
 224  * All attempts to come up with a "common" initialization sequence
 225  * that works for all boards and architectures failed: some of the
 226  * requirements are just _too_ different. To get rid of the resulting
 227  * mess of board dependent #ifdef'ed code we now make the whole
 228  * initialization sequence configurable to the user.
 229  *
 230  * The requirements for any new initalization function is simple: it
 231  * receives a pointer to the "global data" structure as it's only
 232  * argument, and returns an integer return code, where 0 means
 233  * "continue" and != 0 means "fatal error, hang the system".
 234  */
 235 typedef int (init_fnc_t) (void);
 236
 237 int print_cpuinfo (void); /* test-only */
 238
 239 init_fnc_t *init_sequence[] = {
 240         cpu_init,               /* basic cpu dependent setup */
 241         board_init,             /* basic board dependent setup */
 242         interrupt_init,         /* set up exceptions */
 243         env_init,               /* initialize environment */
 244         init_baudrate,          /* initialze baudrate settings */
 245         serial_init,            /* serial communications setup */
 246         console_init_f,         /* stage 1 init of console */
 247         display_banner,         /* say that we are here */
 248 #if defined(CONFIG_DISPLAY_CPUINFO)
 249         print_cpuinfo,          /* display cpu info (and speed) */
 250 #endif
 251 #if defined(CONFIG_DISPLAY_BOARDINFO)
 252         checkboard,             /* display board info */
 253 #endif
 254         dram_init,              /* configure available RAM banks */
 255         display_dram_config,
 256         NULL,
 257 };
 258
 259 void start_armboot (void)
 260 {
 261         init_fnc_t **init_fnc_ptr;
 262         char *s;
 263 #ifndef CFG_NO_FLASH
 264         ulong size;
 265 #endif
 266 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
 267         unsigned long addr;
 268 #endif
 269
 270         /* Pointer is writable since we allocated a register for it */
 271         gd = (gd_t*)(_armboot_start - CFG_MALLOC_LEN - sizeof(gd_t));
 272         /* compiler optimization barrier needed for GCC >= 3.4 */
 273         __asm__ __volatile__("": : :"memory");
 274
 275         memset ((void*)gd, 0, sizeof (gd_t));
 276         gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
 277         memset (gd->bd, 0, sizeof (bd_t));
 278
 279         monitor_flash_len = _bss_start - _armboot_start;
 280
 281         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 282                 if ((*init_fnc_ptr)() != 0) {
 283                         hang ();
 284                 }
 285         }
 286
 287 #ifndef CFG_NO_FLASH
 288         /* configure available FLASH banks */
 289         size = flash_init ();
 290         display_flash_config (size);
 291 #endif /* CFG_NO_FLASH */
 292
 293 #ifdef CONFIG_VFD
 294 #       ifndef PAGE_SIZE
 295 #         define PAGE_SIZE 4096
 296 #       endif
 297         /*
 298          * reserve memory for VFD display (always full pages)
 299          */
 300         /* bss_end is defined in the board-specific linker script */
 301         addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 302         size = vfd_setmem (addr);
 303         gd->fb_base = addr;
 304 #endif /* CONFIG_VFD */
 305
 306 #ifdef CONFIG_LCD
 307 #       ifndef PAGE_SIZE
 308 #         define PAGE_SIZE 4096
 309 #       endif
 310         /*
 311          * reserve memory for LCD display (always full pages)
 312          */
 313         /* bss_end is defined in the board-specific linker script */
 314         addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 315         size = lcd_setmem (addr);
 316         gd->fb_base = addr;
 317 #endif /* CONFIG_LCD */
 318
 319         /* armboot_start is defined in the board-specific linker script */
 320         mem_malloc_init (_armboot_start - CFG_MALLOC_LEN);
 321
 322 #if defined(CONFIG_CMD_NAND)
 323         puts ("NAND:  ");
 324         nand_init();            /* go init the NAND */
 325 #endif
 326
 327 #if defined(CONFIG_CMD_ONENAND)
 328         onenand_init();
 329 #endif
 330
 331 #ifdef CONFIG_HAS_DATAFLASH
 332         AT91F_DataflashInit();
 333         dataflash_print_info();
 334 #endif
 335
 336         /* initialize environment */
 337         env_relocate ();
 338
 339 #ifdef CONFIG_VFD
 340         /* must do this after the framebuffer is allocated */
 341         drv_vfd_init();
 342 #endif /* CONFIG_VFD */
 343
 344 #ifdef CONFIG_SERIAL_MULTI
 345         serial_initialize();
 346 #endif
 347
 348         /* IP Address */
 349         gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 350
 351         /* MAC Address */
 352         {
 353                 int i;
 354                 ulong reg;
 355                 char *s, *e;
 356                 char tmp[64];
 357
 358                 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
 359                 s = (i > 0) ? tmp : NULL;
 360
 361                 for (reg = 0; reg < 6; ++reg) {
 362                         gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
 363                         if (s)
 364                                 s = (*e) ? e + 1 : e;
 365                 }
 366
 367 #ifdef CONFIG_HAS_ETH1
 368                 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
 369                 s = (i > 0) ? tmp : NULL;
 370
 371                 for (reg = 0; reg < 6; ++reg) {
 372                         gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
 373                         if (s)
 374                                 s = (*e) ? e + 1 : e;
 375                 }
 376 #endif
 377         }
 378
 379         devices_init ();        /* get the devices list going. */
 380
 381 #ifdef CONFIG_CMC_PU2
 382         load_sernum_ethaddr ();
 383 #endif /* CONFIG_CMC_PU2 */
 384
 385         jumptable_init ();
 386
 387         console_init_r ();      /* fully init console as a device */
 388
 389 #if defined(CONFIG_MISC_INIT_R)
 390         /* miscellaneous platform dependent initialisations */
 391         misc_init_r ();
 392 #endif
 393
 394         /* enable exceptions */
 395         enable_interrupts ();
 396
 397         /* Perform network card initialisation if necessary */
 398 #ifdef CONFIG_DRIVER_TI_EMAC
 399 extern void dm644x_eth_set_mac_addr (const u_int8_t *addr);
 400         if (getenv ("ethaddr")) {
 401                 dm644x_eth_set_mac_addr(gd->bd->bi_enetaddr);
 402         }
 403 #endif
 404
 405 #ifdef CONFIG_DRIVER_CS8900
 406         cs8900_get_enetaddr (gd->bd->bi_enetaddr);
 407 #endif
 408
 409 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
 410         if (getenv ("ethaddr")) {
 411                 smc_set_mac_addr(gd->bd->bi_enetaddr);
 412         }
 413 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
 414
 415         /* Initialize from environment */
 416         if ((s = getenv ("loadaddr")) != NULL) {
 417                 load_addr = simple_strtoul (s, NULL, 16);
 418         }
 419 #if defined(CONFIG_CMD_NET)
 420         if ((s = getenv ("bootfile")) != NULL) {
 421                 copy_filename (BootFile, s, sizeof (BootFile));
 422         }
 423 #endif
 424
 425 #ifdef BOARD_LATE_INIT
 426         board_late_init ();
 427 #endif
 428 #if defined(CONFIG_CMD_NET)
 429 #if defined(CONFIG_NET_MULTI)
 430         puts ("Net:   ");
 431 #endif
 432         eth_initialize(gd->bd);
 433 #endif
 434         /* main_loop() can return to retry autoboot, if so just run it again. */
 435         for (;;) {
 436                 main_loop ();
 437         }
 438
 439         /* NOTREACHED - no way out of command loop except booting */
 440 }
 441
 442 void hang (void)
 443 {
 444         puts ("### ERROR ### Please RESET the board ###\n");
 445         for (;;);
 446 }
 447
 448 #ifdef CONFIG_MODEM_SUPPORT
 449 static inline void mdm_readline(char *buf, int bufsiz);
 450
 451 /* called from main loop (common/main.c) */
 452 extern void  dbg(const char *fmt, ...);
 453 int mdm_init (void)
 454 {
 455         char env_str[16];
 456         char *init_str;
 457         int i;
 458         extern char console_buffer[];
 459         extern void enable_putc(void);
 460         extern int hwflow_onoff(int);
 461
 462         enable_putc(); /* enable serial_putc() */
 463
 464 #ifdef CONFIG_HWFLOW
 465         init_str = getenv("mdm_flow_control");
 466         if (init_str && (strcmp(init_str, "rts/cts") == 0))
 467                 hwflow_onoff (1);
 468         else
 469                 hwflow_onoff(-1);
 470 #endif
 471
 472         for (i = 1;;i++) {
 473                 sprintf(env_str, "mdm_init%d", i);
 474                 if ((init_str = getenv(env_str)) != NULL) {
 475                         serial_puts(init_str);
 476                         serial_puts("\n");
 477                         for(;;) {
 478                                 mdm_readline(console_buffer, CFG_CBSIZE);
 479                                 dbg("ini%d: [%s]", i, console_buffer);
 480
 481                                 if ((strcmp(console_buffer, "OK") == 0) ||
 482                                         (strcmp(console_buffer, "ERROR") == 0)) {
 483                                         dbg("ini%d: cmd done", i);
 484                                         break;
 485                                 } else /* in case we are originating call ... */
 486                                         if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 487                                                 dbg("ini%d: connect", i);
 488                                                 return 0;
 489                                         }
 490                         }
 491                 } else
 492                         break; /* no init string - stop modem init */
 493
 494                 udelay(100000);
 495         }
 496
 497         udelay(100000);
 498
 499         /* final stage - wait for connect */
 500         for(;i > 1;) { /* if 'i' > 1 - wait for connection
 501                                   message from modem */
 502                 mdm_readline(console_buffer, CFG_CBSIZE);
 503                 dbg("ini_f: [%s]", console_buffer);
 504                 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 505                         dbg("ini_f: connected");
 506                         return 0;
 507                 }
 508         }
 509
 510         return 0;
 511 }
 512
 513 /* 'inline' - We have to do it fast */
 514 static inline void mdm_readline(char *buf, int bufsiz)
 515 {
 516         char c;
 517         char *p;
 518         int n;
 519
 520         n = 0;
 521         p = buf;
 522         for(;;) {
 523                 c = serial_getc();
 524
 525                 /*              dbg("(%c)", c); */
 526
 527                 switch(c) {
 528                 case '\r':
 529                         break;
 530                 case '\n':
 531                         *p = '\0';
 532                         return;
 533
 534                 default:
 535                         if(n++ > bufsiz) {
 536                                 *p = '\0';
 537                                 return; /* sanity check */
 538                         }
 539                         *p = c;
 540                         p++;
 541                         break;
 542                 }
 543         }
 544 }
 545 #endif  /* CONFIG_MODEM_SUPPORT */