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 <timestamp.h>
  46 #include <version.h>
  47 #include <net.h>
  48 #include <serial.h>
  49 #include <nand.h>
  50 #include <onenand_uboot.h>
  51
  52 #ifdef CONFIG_DRIVER_SMC91111
  53 #include "../drivers/net/smc91111.h"
  54 #endif
  55 #ifdef CONFIG_DRIVER_LAN91C96
  56 #include "../drivers/net/lan91c96.h"
  57 #endif
  58
  59 DECLARE_GLOBAL_DATA_PTR;
  60
  61 ulong monitor_flash_len;
  62
  63 #ifdef CONFIG_HAS_DATAFLASH
  64 extern int  AT91F_DataflashInit(void);
  65 extern void dataflash_print_info(void);
  66 #endif
  67
  68 #ifndef CONFIG_IDENT_STRING
  69 #define CONFIG_IDENT_STRING ""
  70 #endif
  71
  72 const char version_string[] =
  73         U_BOOT_VERSION" (" U_BOOT_DATE " - " U_BOOT_TIME ")"CONFIG_IDENT_STRING;
  74
  75 #ifdef CONFIG_DRIVER_CS8900
  76 extern void cs8900_get_enetaddr (void);
  77 #endif
  78
  79 #ifdef CONFIG_DRIVER_RTL8019
  80 extern void rtl8019_get_enetaddr (uchar * addr);
  81 #endif
  82
  83 #if defined(CONFIG_HARD_I2C) || \
  84     defined(CONFIG_SOFT_I2C)
  85 #include <i2c.h>
  86 #endif
  87
  88 /*
  89  * Begin and End of memory area for malloc(), and current "brk"
  90  */
  91 static ulong mem_malloc_start = 0;
  92 static ulong mem_malloc_end = 0;
  93 static ulong mem_malloc_brk = 0;
  94
  95 static
  96 void mem_malloc_init (ulong dest_addr)
  97 {
  98         mem_malloc_start = dest_addr;
  99         mem_malloc_end = dest_addr + CONFIG_SYS_MALLOC_LEN;
 100         mem_malloc_brk = mem_malloc_start;
 101
 102         memset ((void *) mem_malloc_start, 0,
 103                         mem_malloc_end - mem_malloc_start);
 104 }
 105
 106 void *sbrk (ptrdiff_t increment)
 107 {
 108         ulong old = mem_malloc_brk;
 109         ulong new = old + increment;
 110
 111         if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
 112                 return (NULL);
 113         }
 114         mem_malloc_brk = new;
 115
 116         return ((void *) old);
 117 }
 118
 119
 120 /************************************************************************
 121  * Coloured LED functionality
 122  ************************************************************************
 123  * May be supplied by boards if desired
 124  */
 125 void inline __coloured_LED_init (void) {}
 126 void inline coloured_LED_init (void) __attribute__((weak, alias("__coloured_LED_init")));
 127 void inline __red_LED_on (void) {}
 128 void inline red_LED_on (void) __attribute__((weak, alias("__red_LED_on")));
 129 void inline __red_LED_off(void) {}
 130 void inline red_LED_off(void)        __attribute__((weak, alias("__red_LED_off")));
 131 void inline __green_LED_on(void) {}
 132 void inline green_LED_on(void) __attribute__((weak, alias("__green_LED_on")));
 133 void inline __green_LED_off(void) {}
 134 void inline green_LED_off(void)__attribute__((weak, alias("__green_LED_off")));
 135 void inline __yellow_LED_on(void) {}
 136 void inline yellow_LED_on(void)__attribute__((weak, alias("__yellow_LED_on")));
 137 void inline __yellow_LED_off(void) {}
 138 void inline yellow_LED_off(void)__attribute__((weak, alias("__yellow_LED_off")));
 139
 140 /************************************************************************
 141  * Init Utilities                                                       *
 142  ************************************************************************
 143  * Some of this code should be moved into the core functions,
 144  * or dropped completely,
 145  * but let's get it working (again) first...
 146  */
 147
 148 #if defined(CONFIG_ARM_DCC) && !defined(CONFIG_BAUDRATE)
 149 #define CONFIG_BAUDRATE 115200
 150 #endif
 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 CONFIG_SYS_NO_FLASH
 210 static void display_flash_config (ulong size)
 211 {
 212         puts ("Flash: ");
 213         print_size (size, "\n");
 214 }
 215 #endif /* CONFIG_SYS_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 (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 222         puts ("ready\n");
 223         return (0);
 224 }
 225 #endif
 226
 227 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
 228 #include <pci.h>
 229 static int arm_pci_init(void)
 230 {
 231         pci_init();
 232         return 0;
 233 }
 234 #endif /* CONFIG_CMD_PCI || CONFIG_PCI */
 235
 236 /*
 237  * Breathe some life into the board...
 238  *
 239  * Initialize a serial port as console, and carry out some hardware
 240  * tests.
 241  *
 242  * The first part of initialization is running from Flash memory;
 243  * its main purpose is to initialize the RAM so that we
 244  * can relocate the monitor code to RAM.
 245  */
 246
 247 /*
 248  * All attempts to come up with a "common" initialization sequence
 249  * that works for all boards and architectures failed: some of the
 250  * requirements are just _too_ different. To get rid of the resulting
 251  * mess of board dependent #ifdef'ed code we now make the whole
 252  * initialization sequence configurable to the user.
 253  *
 254  * The requirements for any new initalization function is simple: it
 255  * receives a pointer to the "global data" structure as it's only
 256  * argument, and returns an integer return code, where 0 means
 257  * "continue" and != 0 means "fatal error, hang the system".
 258  */
 259 typedef int (init_fnc_t) (void);
 260
 261 int print_cpuinfo (void); /* test-only */
 262
 263 init_fnc_t *init_sequence[] = {
 264         cpu_init,               /* basic cpu dependent setup */
 265 #if defined(CONFIG_ARCH_CPU_INIT)
 266         arch_cpu_init,          /* basic arch cpu dependent setup */
 267 #endif
 268         board_init,             /* basic board dependent setup */
 269         interrupt_init,         /* set up exceptions */
 270         env_init,               /* initialize environment */
 271         init_baudrate,          /* initialze baudrate settings */
 272         serial_init,            /* serial communications setup */
 273         console_init_f,         /* stage 1 init of console */
 274         display_banner,         /* say that we are here */
 275 #if defined(CONFIG_DISPLAY_CPUINFO)
 276         print_cpuinfo,          /* display cpu info (and speed) */
 277 #endif
 278 #if defined(CONFIG_DISPLAY_BOARDINFO)
 279         checkboard,             /* display board info */
 280 #endif
 281 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
 282         init_func_i2c,
 283 #endif
 284         dram_init,              /* configure available RAM banks */
 285 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
 286         arm_pci_init,
 287 #endif
 288         display_dram_config,
 289         NULL,
 290 };
 291
 292 void start_armboot (void)
 293 {
 294         init_fnc_t **init_fnc_ptr;
 295         char *s;
 296 #if defined(CONFIG_VFD) || defined(CONFIG_LCD)
 297         unsigned long addr;
 298 #endif
 299
 300         /* Pointer is writable since we allocated a register for it */
 301         gd = (gd_t*)(_armboot_start - CONFIG_SYS_MALLOC_LEN - sizeof(gd_t));
 302         /* compiler optimization barrier needed for GCC >= 3.4 */
 303         __asm__ __volatile__("": : :"memory");
 304
 305         memset ((void*)gd, 0, sizeof (gd_t));
 306         gd->bd = (bd_t*)((char*)gd - sizeof(bd_t));
 307         memset (gd->bd, 0, sizeof (bd_t));
 308
 309         gd->flags |= GD_FLG_RELOC;
 310
 311         monitor_flash_len = _bss_start - _armboot_start;
 312
 313         for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
 314                 if ((*init_fnc_ptr)() != 0) {
 315                         hang ();
 316                 }
 317         }
 318
 319 #ifndef CONFIG_SYS_NO_FLASH
 320         /* configure available FLASH banks */
 321         display_flash_config (flash_init ());
 322 #endif /* CONFIG_SYS_NO_FLASH */
 323
 324 #ifdef CONFIG_VFD
 325 #       ifndef PAGE_SIZE
 326 #         define PAGE_SIZE 4096
 327 #       endif
 328         /*
 329          * reserve memory for VFD 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         vfd_setmem (addr);
 334         gd->fb_base = addr;
 335 #endif /* CONFIG_VFD */
 336
 337 #ifdef CONFIG_LCD
 338         /* board init may have inited fb_base */
 339         if (!gd->fb_base) {
 340 #               ifndef PAGE_SIZE
 341 #                 define PAGE_SIZE 4096
 342 #               endif
 343                 /*
 344                  * reserve memory for LCD display (always full pages)
 345                  */
 346                 /* bss_end is defined in the board-specific linker script */
 347                 addr = (_bss_end + (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
 348                 lcd_setmem (addr);
 349                 gd->fb_base = addr;
 350         }
 351 #endif /* CONFIG_LCD */
 352
 353         /* armboot_start is defined in the board-specific linker script */
 354         mem_malloc_init (_armboot_start - CONFIG_SYS_MALLOC_LEN);
 355
 356 #if defined(CONFIG_CMD_NAND)
 357         puts ("NAND:  ");
 358         nand_init();            /* go init the NAND */
 359 #endif
 360
 361 #if defined(CONFIG_CMD_ONENAND)
 362         onenand_init();
 363 #endif
 364
 365 #ifdef CONFIG_HAS_DATAFLASH
 366         AT91F_DataflashInit();
 367         dataflash_print_info();
 368 #endif
 369
 370         /* initialize environment */
 371         env_relocate ();
 372
 373 #ifdef CONFIG_VFD
 374         /* must do this after the framebuffer is allocated */
 375         drv_vfd_init();
 376 #endif /* CONFIG_VFD */
 377
 378 #ifdef CONFIG_SERIAL_MULTI
 379         serial_initialize();
 380 #endif
 381
 382         /* IP Address */
 383         gd->bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
 384
 385         devices_init ();        /* get the devices list going. */
 386
 387         jumptable_init ();
 388
 389 #if defined(CONFIG_API)
 390         /* Initialize API */
 391         api_init ();
 392 #endif
 393
 394         console_init_r ();      /* fully init console as a device */
 395
 396 #if defined(CONFIG_MISC_INIT_R)
 397         /* miscellaneous platform dependent initialisations */
 398         misc_init_r ();
 399 #endif
 400
 401         /* enable exceptions */
 402         enable_interrupts ();
 403
 404         /* Perform network card initialisation if necessary */
 405 #ifdef CONFIG_DRIVER_TI_EMAC
 406         /* XXX: this needs to be moved to board init */
 407 extern void davinci_eth_set_mac_addr (const u_int8_t *addr);
 408         if (getenv ("ethaddr")) {
 409                 uchar enetaddr[6];
 410                 eth_getenv_enetaddr("ethaddr", enetaddr);
 411                 davinci_eth_set_mac_addr(enetaddr);
 412         }
 413 #endif
 414
 415 #ifdef CONFIG_DRIVER_CS8900
 416         /* XXX: this needs to be moved to board init */
 417         cs8900_get_enetaddr ();
 418 #endif
 419
 420 #if defined(CONFIG_DRIVER_SMC91111) || defined (CONFIG_DRIVER_LAN91C96)
 421         /* XXX: this needs to be moved to board init */
 422         if (getenv ("ethaddr")) {
 423                 uchar enetaddr[6];
 424                 eth_getenv_enetaddr("ethaddr", enetaddr);
 425                 smc_set_mac_addr(enetaddr);
 426         }
 427 #endif /* CONFIG_DRIVER_SMC91111 || CONFIG_DRIVER_LAN91C96 */
 428
 429         /* Initialize from environment */
 430         if ((s = getenv ("loadaddr")) != NULL) {
 431                 load_addr = simple_strtoul (s, NULL, 16);
 432         }
 433 #if defined(CONFIG_CMD_NET)
 434         if ((s = getenv ("bootfile")) != NULL) {
 435                 copy_filename (BootFile, s, sizeof (BootFile));
 436         }
 437 #endif
 438
 439 #ifdef BOARD_LATE_INIT
 440         board_late_init ();
 441 #endif
 442 #if defined(CONFIG_CMD_NET)
 443 #if defined(CONFIG_NET_MULTI)
 444         puts ("Net:   ");
 445 #endif
 446         eth_initialize(gd->bd);
 447 #if defined(CONFIG_RESET_PHY_R)
 448         debug ("Reset Ethernet PHY\n");
 449         reset_phy();
 450 #endif
 451 #endif
 452         /* main_loop() can return to retry autoboot, if so just run it again. */
 453         for (;;) {
 454                 main_loop ();
 455         }
 456
 457         /* NOTREACHED - no way out of command loop except booting */
 458 }
 459
 460 void hang (void)
 461 {
 462         puts ("### ERROR ### Please RESET the board ###\n");
 463         for (;;);
 464 }
 465
 466 #ifdef CONFIG_MODEM_SUPPORT
 467 static inline void mdm_readline(char *buf, int bufsiz);
 468
 469 /* called from main loop (common/main.c) */
 470 extern void  dbg(const char *fmt, ...);
 471 int mdm_init (void)
 472 {
 473         char env_str[16];
 474         char *init_str;
 475         int i;
 476         extern char console_buffer[];
 477         extern void enable_putc(void);
 478         extern int hwflow_onoff(int);
 479
 480         enable_putc(); /* enable serial_putc() */
 481
 482 #ifdef CONFIG_HWFLOW
 483         init_str = getenv("mdm_flow_control");
 484         if (init_str && (strcmp(init_str, "rts/cts") == 0))
 485                 hwflow_onoff (1);
 486         else
 487                 hwflow_onoff(-1);
 488 #endif
 489
 490         for (i = 1;;i++) {
 491                 sprintf(env_str, "mdm_init%d", i);
 492                 if ((init_str = getenv(env_str)) != NULL) {
 493                         serial_puts(init_str);
 494                         serial_puts("\n");
 495                         for(;;) {
 496                                 mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
 497                                 dbg("ini%d: [%s]", i, console_buffer);
 498
 499                                 if ((strcmp(console_buffer, "OK") == 0) ||
 500                                         (strcmp(console_buffer, "ERROR") == 0)) {
 501                                         dbg("ini%d: cmd done", i);
 502                                         break;
 503                                 } else /* in case we are originating call ... */
 504                                         if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 505                                                 dbg("ini%d: connect", i);
 506                                                 return 0;
 507                                         }
 508                         }
 509                 } else
 510                         break; /* no init string - stop modem init */
 511
 512                 udelay(100000);
 513         }
 514
 515         udelay(100000);
 516
 517         /* final stage - wait for connect */
 518         for(;i > 1;) { /* if 'i' > 1 - wait for connection
 519                                   message from modem */
 520                 mdm_readline(console_buffer, CONFIG_SYS_CBSIZE);
 521                 dbg("ini_f: [%s]", console_buffer);
 522                 if (strncmp(console_buffer, "CONNECT", 7) == 0) {
 523                         dbg("ini_f: connected");
 524                         return 0;
 525                 }
 526         }
 527
 528         return 0;
 529 }
 530
 531 /* 'inline' - We have to do it fast */
 532 static inline void mdm_readline(char *buf, int bufsiz)
 533 {
 534         char c;
 535         char *p;
 536         int n;
 537
 538         n = 0;
 539         p = buf;
 540         for(;;) {
 541                 c = serial_getc();
 542
 543                 /*              dbg("(%c)", c); */
 544
 545                 switch(c) {
 546                 case '\r':
 547                         break;
 548                 case '\n':
 549                         *p = '\0';
 550                         return;
 551
 552                 default:
 553                         if(n++ > bufsiz) {
 554                                 *p = '\0';
 555                                 return; /* sanity check */
 556                         }
 557                         *p = c;
 558                         p++;
 559                         break;
 560                 }
 561         }
 562 }
 563 #endif  /* CONFIG_MODEM_SUPPORT */