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 #include <serial.h>
  48 #include <nand.h>
  49 #include <onenand_uboot.h>
  50
  51 #ifdef CONFIG_DRIVER_SMC91111
  52 #include "../drivers/net/smc91111.h"
  53 #endif
  54 #ifdef CONFIG_DRIVER_LAN91C96
  55 #include "../drivers/net/lan91c96.h"
  56 #endif
  57
  58 DECLARE_GLOBAL_DATA_PTR;
  59
  60 ulong monitor_flash_len;
  61
  62 #ifdef CONFIG_HAS_DATAFLASH
  63 extern int  AT91F_DataflashInit(void);
  64 extern void dataflash_print_info(void);
  65 #endif
  66
  67 #ifndef CONFIG_IDENT_STRING
  68 #define CONFIG_IDENT_STRING ""
  69 #endif
  70
  71 const char version_string[] =
  72         U_BOOT_VERSION" (" __DATE__ " - " __TIME__ ")"CONFIG_IDENT_STRING;
  73
  74 #ifdef CONFIG_DRIVER_CS8900
  75 extern void cs8900_get_enetaddr (uchar * addr);
  76 #endif
  77
  78 #ifdef CONFIG_DRIVER_RTL8019
  79 extern void rtl8019_get_enetaddr (uchar * addr);
  80 #endif
  81
  82 #if defined(CONFIG_HARD_I2C) || \
  83     defined(CONFIG_SOFT_I2C)
  84 #include <i2c.h>
  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 + CONFIG_SYS_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 /************************************************************************
 120  * Coloured LED functionality
 121  ************************************************************************
 122  * May be supplied by boards if desired
 123  */
 124 void inline __coloured_LED_init (void) {}
 125 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
 126 void inline __red_LED_on (void) {}
 127 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
 128 void inline __red_LED_off(void) {}
 129 void inline red_LED_off(void)        __attribute__((weak, alias("__red_LED_off")));
 130 void inline __green_LED_on(void) {}
 131 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
 132 void inline __green_LED_off(void) {}
 133 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
 134 void inline __yellow_LED_on(void) {}
 135 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
 136 void inline __yellow_LED_off(void) {}
 137 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
 138
 139 /************************************************************************
 140  * Init Utilities                                                       *
 141  ************************************************************************
 142  * Some of this code should be moved into the core functions,
 143  * or dropped completely,
 144  * but let's get it working (again) first...
 145  */
 146
 147 static int init_baudrate (void)
 148 {
 149         char tmp[64];   /* long enough for environment variables */
 150         int i = getenv_r ("baudrate", tmp, sizeof (tmp));
 151         gd->bd->bi_baudrate = gd->baudrate = (i > 0)
 152                         ? (int) simple_strtoul (tmp, NULL, 10)
 153                         : CONFIG_BAUDRATE;
 154
 155         return (0);
 156 }
 157
 158 static int display_banner (void)
 159 {
 160         printf ("\n\n%s\n\n", version_string);
 161         debug ("U-Boot code: %08lX -> %08lX  BSS: -> %08lX\n",
 162                _armboot_start, _bss_start, _bss_end);
 163 #ifdef CONFIG_MODEM_SUPPORT
 164         debug ("Modem Support enabled\n");
 165 #endif
 166 #ifdef CONFIG_USE_IRQ
 167         debug ("IRQ Stack: %08lx\n", IRQ_STACK_START);
 168         debug ("FIQ Stack: %08lx\n", FIQ_STACK_START);
 169 #endif
 170
 171         return (0);
 172 }
 173
 174 /*
 175  * WARNING: this code looks "cleaner" than the PowerPC version, but
 176  * has the disadvantage that you either get nothing, or everything.
 177  * On PowerPC, you might see "DRAM: " before the system hangs - which
 178  * gives a simple yet clear indication which part of the
 179  * initialization if failing.
 180  */
 181 static int display_dram_config (void)
 182 {
 183         int i;
 184
 185 #ifdef DEBUG
 186         puts ("RAM Configuration:\n");
 187
 188         for(i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 189                 printf ("Bank #%d: %08lx ", i, gd->bd->bi_dram[i].start);
 190                 print_size (gd->bd->bi_dram[i].size, "\n");
 191         }
 192 #else
 193         ulong size = 0;
 194
 195         for (i=0; i<CONFIG_NR_DRAM_BANKS; i++) {
 196                 size += gd->bd->bi_dram[i].size;
 197         }
 198         puts("DRAM:  ");
 199         print_size(size, "\n");
 200 #endif
 201
 202         return (0);
 203 }
 204
 205 #ifndef CONFIG_SYS_NO_FLASH
 206 static void display_flash_config (ulong size)
 207 {
 208         puts ("Flash: ");
 209         print_size (size, "\n");
 210 }
 211 #endif /* CONFIG_SYS_NO_FLASH */
 212
 213 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 214 static int init_func_i2c (void)
 215 {
 216         puts ("I2C:   ");
 217         i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 218         puts ("ready\n");
 219         return (0);
 220 }
 221 #endif
 222
 223 /*
 224  * Breathe some life into the board...
 225  *
 226  * Initialize a serial port as console, and carry out some hardware
 227  * tests.
 228  *
 229  * The first part of initialization is running from Flash memory;
 230  * its main purpose is to initialize the RAM so that we
 231  * can relocate the monitor code to RAM.
 232  */
 233
 234 /*
 235  * All attempts to come up with a "common" initialization sequence
 236  * that works for all boards and architectures failed: some of the
 237  * requirements are just _too_ different. To get rid of the resulting
 238  * mess of board dependent #ifdef'ed code we now make the whole
 239  * initialization sequence configurable to the user.
 240  *
 241  * The requirements for any new initalization function is simple: it
 242  * receives a pointer to the "global data" structure as it's only
 243  * argument, and returns an integer return code, where 0 means
 244  * "continue" and != 0 means "fatal error, hang the system".
 245  */
 246 typedef int (init_fnc_t) (void);
 247
 248 int print_cpuinfo (void); /* test-only */
 249
 250 init_fnc_t *init_sequence[] = {
 251         cpu_init,               /* basic cpu dependent setup */
 252         board_init,             /* basic board dependent setup */
 253         interrupt_init,         /* set up exceptions */
 254         env_init,               /* initialize environment */
 255         init_baudrate,          /* initialze baudrate settings */
 256         serial_init,            /* serial communications setup */
 257         console_init_f,         /* stage 1 init of console */
 258         display_banner,         /* say that we are here */
 259 #if defined(CONFIG_DISPLAY_CPUINFO)
 260         print_cpuinfo,          /* display cpu info (and speed) */
 261 #endif
 262 #if defined(CONFIG_DISPLAY_BOARDINFO)
 263         checkboard,             /* display board info */
 264 #endif
 265 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 266         init_func_i2c,
 267 #endif
 268         dram_init,              /* configure available RAM banks */
 269         display_dram_config,
 270         NULL,
 271 };
 272
 273 void start_armboot (void)
 274 {
 275         init_fnc_t **init_fnc_ptr;
 276         char *s;
 277 #if !defined(CONFIG_SYS_NO_FLASH) || defined (CONFIG_VFD) || defined(CONFIG_LCD)
 278         ulong size;
 279 #endif
 280 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
 281         unsigned long addr;
 282 #endif
 283
 284         /* Pointer is writable since we allocated a register for it */
 285         gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
 286         /* compiler optimization barrier needed for GCC >= 3.4 */
 287         __asm__ __volatile__("": : :"memory");
 288
 289         memset ((void*)gd, 0, sizeof (gd_t));
 290         gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
 291         memset (gd->bd, 0, sizeof (bd_t));
 292
 293         gd->flags |= GD_FLG_RELOC;
 294
 295         monitor_flash_len = _bss_start - _armboot_start;
 296
 297         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 298                 if ((*init_fnc_ptr)() != 0) {
 299                         hang ();
 300                 }
 301         }
 302
 303 #ifndef CONFIG_SYS_NO_FLASH
 304         /* configure available FLASH banks */
 305         size = flash_init ();
 306         display_flash_config (size);
 307 #endif /* CONFIG_SYS_NO_FLASH */
 308
 309 #ifdef CONFIG_VFD
 310 #       ifndef PAGE_SIZE
 311 #         define PAGE_SIZE 4096
 312 #       endif
 313         /*
 314          * reserve memory for VFD display (always full pages)
 315          */
 316         /* bss_end is defined in the board-specific linker script */
 317         addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 318         size = vfd_setmem (addr);
 319         gd->fb_base = addr;
 320 #endif /* CONFIG_VFD */
 321
 322 #ifdef CONFIG_LCD
 323         /* board init may have inited fb_base */
 324         if (!gd->fb_base) {
 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         }
 336 #endif /* CONFIG_LCD */
 337
 338         /* armboot_start is defined in the board-specific linker script */
 339         mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN);
 340
 341 #if defined(CONFIG_CMD_NAND)
 342         puts ("NAND:  ");
 343         nand_init();            /* go init the NAND */
 344 #endif
 345
 346 #if defined(CONFIG_CMD_ONENAND)
 347         onenand_init();
 348 #endif
 349
 350 #ifdef CONFIG_HAS_DATAFLASH
 351         AT91F_DataflashInit();
 352         dataflash_print_info();
 353 #endif
 354
 355         /* initialize environment */
 356         env_relocate ();
 357
 358 #ifdef CONFIG_VFD
 359         /* must do this after the framebuffer is allocated */
 360         drv_vfd_init();
 361 #endif /* CONFIG_VFD */
 362
 363 #ifdef CONFIG_SERIAL_MULTI
 364         serial_initialize();
 365 #endif
 366
 367         /* IP Address */
 368         gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 369
 370         /* MAC Address */
 371         {
 372                 int i;
 373                 ulong reg;
 374                 char *s, *e;
 375                 char tmp[64];
 376
 377                 i = getenv_r ("ethaddr", tmp, sizeof (tmp));
 378                 s = (i > 0) ? tmp : NULL;
 379
 380                 for (reg = 0; reg < 6; ++reg) {
 381                         gd->bd->bi_enetaddr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
 382                         if (s)
 383                                 s = (*e) ? e + 1 : e;
 384                 }
 385
 386 #ifdef CONFIG_HAS_ETH1
 387                 i = getenv_r ("eth1addr", tmp, sizeof (tmp));
 388                 s = (i > 0) ? tmp : NULL;
 389
 390                 for (reg = 0; reg < 6; ++reg) {
 391                         gd->bd->bi_enet1addr[reg] = s ? simple_strtoul (s, &e, 16) : 0;
 392                         if (s)
 393                                 s = (*e) ? e + 1 : e;
 394                 }
 395 #endif
 396         }
 397
 398         devices_init ();        /* get the devices list going. */
 399
 400 #ifdef CONFIG_CMC_PU2
 401         load_sernum_ethaddr ();
 402 #endif /* CONFIG_CMC_PU2 */
 403
 404         jumptable_init ();
 405
 406         console_init_r ();      /* fully init console as a device */
 407
 408 #if defined(CONFIG_MISC_INIT_R)
 409         /* miscellaneous platform dependent initialisations */
 410         misc_init_r ();
 411 #endif
 412
 413         /* enable exceptions */
 414         enable_interrupts ();
 415
 416         /* Perform network card initialisation if necessary */
 417 #ifdef CONFIG_DRIVER_TI_EMAC
 418 extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
 419         if (getenv ("ethaddr")) {
 420                 davinci_eth_set_mac_addr(gd->bd->bi_enetaddr);
 421         }
 422 #endif
 423
 424 #ifdef CONFIG_DRIVER_CS8900
 425         cs8900_get_enetaddr (gd->bd->bi_enetaddr);
 426 #endif
 427
 428 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
 429         if (getenv ("ethaddr")) {
 430                 smc_set_mac_addr(gd->bd->bi_enetaddr);
 431         }
 432 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
 433
 434         /* Initialize from environment */
 435         if ((s = getenv ("loadaddr")) != NULL) {
 436                 load_addr = simple_strtoul (s, NULL, 16);
 437         }
 438 #if defined(CONFIG_CMD_NET)
 439         if ((s = getenv ("bootfile")) != NULL) {
 440                 copy_filename (BootFile, s, sizeof (BootFile));
 441         }
 442 #endif
 443
 444 #ifdef BOARD_LATE_INIT
 445         board_late_init ();
 446 #endif
 447 #if defined(CONFIG_CMD_NET)
 448 #if defined(CONFIG_NET_MULTI)
 449         puts ("Net:   ");
 450 #endif
 451         eth_initialize(gd->bd);
 452 #if defined(CONFIG_RESET_PHY_R)
 453         debug ("Reset Ethernet PHY\n");
 454         reset_phy();
 455 #endif
 456 #endif
 457         /* main_loop() can return to retry autoboot, if so just run it again. */
 458         for (;;) {
 459                 main_loop ();
 460         }
 461
 462         /* NOTREACHED - no way out of command loop except booting */
 463 }
 464
 465 void hang (void)
 466 {
 467         puts ("### ERROR ### Please RESET the board ###\n");
 468         for (;;);
 469 }
 470
 471 #ifdef CONFIG_MODEM_SUPPORT
 472 static inline void mdm_readline(char *buf, int bufsiz);
 473
 474 /* called from main loop (common/main.c) */
 475 extern void  dbg(const char *fmt, ...);
 476 int mdm_init (void)
 477 {
 478         char env_str[16];
 479         char *init_str;
 480         int i;
 481         extern char console_buffer[];
 482         extern void enable_putc(void);
 483         extern int hwflow_onoff(int);
 484
 485         enable_putc(); /* enable serial_putc() */
 486
 487 #ifdef CONFIG_HWFLOW
 488         init_str = getenv("mdm_flow_control");
 489         if (init_str && (strcmp(init_str, "rts/cts") == 0))
 490                 hwflow_onoff (1);
 491         else
 492                 hwflow_onoff(-1);
 493 #endif
 494
 495         for (i = 1;;i++) {
 496                 sprintf(env_str, "mdm_init%d", i);
 497                 if ((init_str = getenv(env_str)) != NULL) {
 498                         serial_puts(init_str);
 499                         serial_puts("\n");
 500                         for(;;) {
 501                                 mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
 502                                 dbg("ini%d: [%s]", i, console_buffer);
 503
 504                                 if ((strcmp(console_buffer, "OK") == 0) ||
 505                                         (strcmp(console_buffer, "ERROR") == 0)) {
 506                                         dbg("ini%d: cmd done", i);
 507                                         break;
 508                                 } else /* in case we are originating call ... */
 509                                         if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 510                                                 dbg("ini%d: connect", i);
 511                                                 return 0;
 512                                         }
 513                         }
 514                 } else
 515                         break; /* no init string - stop modem init */
 516
 517                 udelay(100000);
 518         }
 519
 520         udelay(100000);
 521
 522         /* final stage - wait for connect */
 523         for(;i > 1;) { /* if 'i' > 1 - wait for connection
 524                                   message from modem */
 525                 mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
 526                 dbg("ini_f: [%s]", console_buffer);
 527                 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 528                         dbg("ini_f: connected");
 529                         return 0;
 530                 }
 531         }
 532
 533         return 0;
 534 }
 535
 536 /* 'inline' - We have to do it fast */
 537 static inline void mdm_readline(char *buf, int bufsiz)
 538 {
 539         char c;
 540         char *p;
 541         int n;
 542
 543         n = 0;
 544         p = buf;
 545         for(;;) {
 546                 c = serial_getc();
 547
 548                 /*              dbg("(%c)", c); */
 549
 550                 switch(c) {
 551                 case '\r':
 552                         break;
 553                 case '\n':
 554                         *p = '\0';
 555                         return;
 556
 557                 default:
 558                         if(n++ > bufsiz) {
 559                                 *p = '\0';
 560                                 return; /* sanity check */
 561                         }
 562                         *p = c;
 563                         p++;
 564                         break;
 565                 }
 566         }
 567 }
 568 #endif  /* CONFIG_MODEM_SUPPORT */