lib_sparc/board.c

   1 /* SPARC Board initialization
   2  *
   3  * (C) Copyright 2000-2006
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  *
   6  * (C) Copyright 2007
   7  * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
   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 #include <common.h>
  29 #include <command.h>
  30 #include <malloc.h>
  31 #include <stdio_dev.h>
  32 #include <config.h>
  33 #if defined(CONFIG_CMD_IDE)
  34 #include <ide.h>
  35 #endif
  36 #ifdef CONFIG_STATUS_LED
  37 #include <status_led.h>
  38 #endif
  39 #include <net.h>
  40 #include <serial.h>
  41 #include <version.h>
  42 #if defined(CONFIG_POST)
  43 #include <post.h>
  44 #endif
  45 #ifdef CONFIG_PS2KBD
  46 #include <keyboard.h>
  47 #endif
  48 #ifdef CONFIG_CMD_AMBAPP
  49 #include <ambapp.h>
  50 #endif
  51
  52 DECLARE_GLOBAL_DATA_PTR;
  53
  54 /* Debug options
  55 #define DEBUG_INIT_SEQUENCE
  56 #define DEBUG_MEM_LAYOUT
  57 #define DEBUG_COMMANDS
  58 */
  59
  60 extern void timer_interrupt_init(void);
  61 extern void malloc_bin_reloc(void);
  62 extern int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]);
  63 extern int prom_init(void);
  64
  65 #if defined(CONFIG__CMD_DOC)
  66 void doc_init(void);
  67 #endif
  68
  69 #if !defined(CONFIG_SYS_NO_FLASH)
  70 static char *failed = "*** failed ***\n";
  71 #endif
  72
  73 #include <environment.h>
  74
  75 ulong monitor_flash_len;
  76
  77 /*
  78  * Begin and End of memory area for malloc(), and current "brk"
  79  */
  80 static ulong mem_malloc_start = 0;
  81 static ulong mem_malloc_end = 0;
  82 static ulong mem_malloc_brk = 0;
  83
  84 /************************************************************************
  85  * Utilities                                                            *
  86  ************************************************************************
  87  */
  88
  89 /*
  90  * The Malloc area is immediately below the monitor copy in RAM
  91  */
  92 static void mem_malloc_init(void)
  93 {
  94         mem_malloc_start = CONFIG_SYS_MALLOC_BASE;
  95         mem_malloc_end = CONFIG_SYS_MALLOC_END;
  96         mem_malloc_brk = mem_malloc_start;
  97         memset((void *)mem_malloc_start, 0, mem_malloc_end - mem_malloc_start);
  98 }
  99
 100 void *sbrk(ptrdiff_t increment)
 101 {
 102         ulong old = mem_malloc_brk;
 103         ulong new = old + increment;
 104
 105         if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
 106                 return (NULL);
 107         }
 108         mem_malloc_brk = new;
 109         return ((void *)old);
 110 }
 111
 112 /***********************************************************************/
 113
 114 /************************************************************************
 115  * Init Utilities                                                       *
 116  ************************************************************************
 117  * Some of this code should be moved into the core functions,
 118  * but let's get it working (again) first...
 119  */
 120
 121 static int init_baudrate(void)
 122 {
 123         char tmp[64];           /* long enough for environment variables */
 124         int i = getenv_r("baudrate", tmp, sizeof(tmp));
 125
 126         gd->baudrate = (i > 0)
 127             ? (int)simple_strtoul(tmp, NULL, 10)
 128             : CONFIG_BAUDRATE;
 129         return (0);
 130 }
 131
 132 /***********************************************************************/
 133
 134 /*
 135  * All attempts to come up with a "common" initialization sequence
 136  * that works for all boards and architectures failed: some of the
 137  * requirements are just _too_ different. To get rid of the resulting
 138  * mess of board dependend #ifdef'ed code we now make the whole
 139  * initialization sequence configurable to the user.
 140  *
 141  * The requirements for any new initalization function is simple: it
 142  * receives a pointer to the "global data" structure as it's only
 143  * argument, and returns an integer return code, where 0 means
 144  * "continue" and != 0 means "fatal error, hang the system".
 145  */
 146 typedef int (init_fnc_t) (void);
 147
 148 #define WATCHDOG_RESET(x)
 149
 150 /************************************************************************
 151  * Initialization sequence                                              *
 152  ************************************************************************
 153  */
 154
 155 init_fnc_t *init_sequence[] = {
 156
 157 #if defined(CONFIG_BOARD_EARLY_INIT_F)
 158         board_early_init_f,
 159 #endif
 160         serial_init,
 161
 162         init_timebase,
 163
 164 #if defined(CONFIG_CMD_AMBAPP)
 165         ambapp_init_reloc,
 166 #endif
 167
 168         env_init,
 169
 170         init_baudrate,
 171
 172         console_init_f,
 173         display_options,
 174
 175         checkcpu,
 176         checkboard,
 177 #if defined(CONFIG_MISC_INIT_F)
 178         misc_init_f,
 179 #endif
 180
 181 #ifdef CONFIG_POST
 182         post_init_f,
 183 #endif
 184
 185         NULL,                   /* Terminate this list,
 186                                  * beware: this list will be relocated
 187                                  * which means that NULL will become
 188                                  * NULL+RELOC_OFFSET. We simply make
 189                                  * NULL be -RELOC_OFFSET instead.
 190                                  */
 191 };
 192
 193 /************************************************************************
 194  *
 195  * This is the SPARC board initialization routine, running from RAM.
 196  *
 197  ************************************************************************
 198  */
 199 #ifdef DEBUG_INIT_SEQUENCE
 200 char *str_init_seq = "INIT_SEQ 00\n";
 201 char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n";
 202 #endif
 203
 204 void board_init_f(ulong bootflag)
 205 {
 206         cmd_tbl_t *cmdtp;
 207         bd_t *bd;
 208         unsigned char *s;
 209         init_fnc_t **init_fnc_ptr;
 210         int j;
 211         int i;
 212         char *e;
 213
 214 #ifndef CONFIG_SYS_NO_FLASH
 215         ulong flash_size;
 216 #endif
 217
 218         gd = (gd_t *) (CONFIG_SYS_GBL_DATA_OFFSET);
 219
 220         /* Clear initial global data */
 221         memset((void *)gd, 0, sizeof(gd_t));
 222
 223         gd->bd = (bd_t *) (gd + 1);     /* At end of global data */
 224         gd->baudrate = CONFIG_BAUDRATE;
 225         gd->cpu_clk = CONFIG_SYS_CLK_FREQ;
 226
 227         bd = gd->bd;
 228         bd->bi_memstart = CONFIG_SYS_RAM_BASE;
 229         bd->bi_memsize = CONFIG_SYS_RAM_SIZE;
 230         bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
 231 #if     defined(CONFIG_SYS_SRAM_BASE) && defined(CONFIG_SYS_SRAM_SIZE)
 232         bd->bi_sramstart = CONFIG_SYS_SRAM_BASE;
 233         bd->bi_sramsize = CONFIG_SYS_SRAM_SIZE;
 234 #endif
 235         bd->bi_baudrate = CONFIG_BAUDRATE;
 236         bd->bi_bootflags = bootflag;    /* boot / reboot flag (for LynxOS)    */
 237
 238         gd->flags |= GD_FLG_RELOC;      /* tell others: relocation done */
 239         gd->reloc_off = CONFIG_SYS_RELOC_MONITOR_BASE - CONFIG_SYS_MONITOR_BASE;
 240
 241         for (init_fnc_ptr = init_sequence, j = 0; *init_fnc_ptr;
 242              ++init_fnc_ptr, j++) {
 243 #ifdef DEBUG_INIT_SEQUENCE
 244                 if (j > 9)
 245                         str_init_seq[9] = '0' + (j / 10);
 246                 str_init_seq[10] = '0' + (j - (j / 10) * 10);
 247                 serial_puts(str_init_seq);
 248 #endif
 249                 if ((*init_fnc_ptr + gd->reloc_off) () != 0) {
 250                         hang();
 251                 }
 252         }
 253 #ifdef DEBUG_INIT_SEQUENCE
 254         serial_puts(str_init_seq_done);
 255 #endif
 256
 257         /*
 258          * Now that we have DRAM mapped and working, we can
 259          * relocate the code and continue running from DRAM.
 260          *
 261          * Reserve memory at end of RAM for (top down in that order):
 262          *  - kernel log buffer
 263          *  - protected RAM
 264          *  - LCD framebuffer
 265          *  - monitor code
 266          *  - board info struct
 267          */
 268 #ifdef DEBUG_MEM_LAYOUT
 269         printf("CONFIG_SYS_MONITOR_BASE:       0x%lx\n", CONFIG_SYS_MONITOR_BASE);
 270         printf("CONFIG_ENV_ADDR:           0x%lx\n", CONFIG_ENV_ADDR);
 271         printf("CONFIG_SYS_RELOC_MONITOR_BASE: 0x%lx (%d)\n", CONFIG_SYS_RELOC_MONITOR_BASE,
 272                CONFIG_SYS_MONITOR_LEN);
 273         printf("CONFIG_SYS_MALLOC_BASE:        0x%lx (%d)\n", CONFIG_SYS_MALLOC_BASE,
 274                CONFIG_SYS_MALLOC_LEN);
 275         printf("CONFIG_SYS_INIT_SP_OFFSET:     0x%lx (%d)\n", CONFIG_SYS_INIT_SP_OFFSET,
 276                CONFIG_SYS_STACK_SIZE);
 277         printf("CONFIG_SYS_PROM_OFFSET:        0x%lx (%d)\n", CONFIG_SYS_PROM_OFFSET,
 278                CONFIG_SYS_PROM_SIZE);
 279         printf("CONFIG_SYS_GBL_DATA_OFFSET:    0x%lx (%d)\n", CONFIG_SYS_GBL_DATA_OFFSET,
 280                CONFIG_SYS_GBL_DATA_SIZE);
 281 #endif
 282
 283 #ifdef CONFIG_POST
 284         post_bootmode_init();
 285         post_run(NULL, POST_ROM | post_bootmode_get(0));
 286 #endif
 287
 288         /*
 289          * We have to relocate the command table manually
 290          */
 291         for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
 292                 ulong addr;
 293                 addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
 294 #if DEBUG_COMMANDS
 295                 printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
 296                        cmdtp->name, (ulong) (cmdtp->cmd), addr);
 297 #endif
 298                 cmdtp->cmd =
 299                     (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
 300
 301                 addr = (ulong) (cmdtp->name) + gd->reloc_off;
 302                 cmdtp->name = (char *)addr;
 303
 304                 if (cmdtp->usage) {
 305                         addr = (ulong) (cmdtp->usage) + gd->reloc_off;
 306                         cmdtp->usage = (char *)addr;
 307                 }
 308 #ifdef  CONFIG_SYS_LONGHELP
 309                 if (cmdtp->help) {
 310                         addr = (ulong) (cmdtp->help) + gd->reloc_off;
 311                         cmdtp->help = (char *)addr;
 312                 }
 313 #endif
 314         }
 315
 316 #if defined(CONFIG_CMD_AMBAPP) && defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP)
 317         puts("AMBA:\n");
 318         do_ambapp_print(NULL, 0, 0, NULL);
 319 #endif
 320
 321         /* initialize higher level parts of CPU like time base and timers */
 322         cpu_init_r();
 323
 324         /* start timer */
 325         timer_interrupt_init();
 326
 327         /*
 328          * Enable Interrupts before any calls to udelay,
 329          * the flash driver may use udelay resulting in
 330          * a hang if not timer0 IRQ is enabled.
 331          */
 332         interrupt_init();
 333
 334         /* initialize malloc() area */
 335         mem_malloc_init();
 336         malloc_bin_reloc();
 337
 338 #if !defined(CONFIG_SYS_NO_FLASH)
 339         puts("FLASH: ");
 340
 341         if ((flash_size = flash_init()) > 0) {
 342 # ifdef CONFIG_SYS_FLASH_CHECKSUM
 343                 print_size(flash_size, "");
 344                 /*
 345                  * Compute and print flash CRC if flashchecksum is set to 'y'
 346                  *
 347                  * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 348                  */
 349                 s = getenv("flashchecksum");
 350                 if (s && (*s == 'y')) {
 351                         printf("  CRC: %08lX",
 352                                crc32(0, (const unsigned char *)CONFIG_SYS_FLASH_BASE,
 353                                      flash_size)
 354                             );
 355                 }
 356                 putc('\n');
 357 # else                          /* !CONFIG_SYS_FLASH_CHECKSUM */
 358                 print_size(flash_size, "\n");
 359 # endif                         /* CONFIG_SYS_FLASH_CHECKSUM */
 360         } else {
 361                 puts(failed);
 362                 hang();
 363         }
 364
 365         bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;      /* update start of FLASH memory    */
 366         bd->bi_flashsize = flash_size;  /* size of FLASH memory (final value) */
 367 #if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
 368         bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor  */
 369 #else
 370         bd->bi_flashoffset = 0;
 371 #endif
 372 #else                           /* CONFIG_SYS_NO_FLASH */
 373         bd->bi_flashsize = 0;
 374         bd->bi_flashstart = 0;
 375         bd->bi_flashoffset = 0;
 376 #endif                          /* !CONFIG_SYS_NO_FLASH */
 377
 378 #ifdef CONFIG_SPI
 379 # if !defined(CONFIG_ENV_IS_IN_EEPROM)
 380         spi_init_f();
 381 # endif
 382         spi_init_r();
 383 #endif
 384
 385         /* relocate environment function pointers etc. */
 386         env_relocate();
 387
 388 #if defined(CONFIG_BOARD_LATE_INIT)
 389         board_late_init();
 390 #endif
 391
 392 #ifdef CONFIG_ID_EEPROM
 393         mac_read_from_eeprom();
 394 #endif
 395
 396         /* IP Address */
 397         bd->bi_ip_addr = getenv_IPaddr("ipaddr");
 398 #if defined(CONFIG_PCI)
 399         /*
 400          * Do pci configuration
 401          */
 402         pci_init();
 403 #endif
 404
 405         /* Initialize stdio devices */
 406         stdio_init();
 407
 408         /* Initialize the jump table for applications */
 409         jumptable_init();
 410
 411         /* Initialize the console (after the relocation and devices init) */
 412         console_init_r();
 413
 414 #ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 415         serial_buffered_init();
 416 #endif
 417
 418 #ifdef CONFIG_STATUS_LED
 419         status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
 420 #endif
 421
 422         udelay(20);
 423
 424         set_timer(0);
 425
 426         /* Initialize from environment */
 427         if ((s = getenv("loadaddr")) != NULL) {
 428                 load_addr = simple_strtoul(s, NULL, 16);
 429         }
 430 #if defined(CONFIG_CMD_NET)
 431         if ((s = getenv("bootfile")) != NULL) {
 432                 copy_filename(BootFile, s, sizeof(BootFile));
 433         }
 434 #endif /* CONFIG_CMD_NET */
 435
 436         WATCHDOG_RESET();
 437
 438 #if defined(CONFIG_CMD_DOC)
 439         WATCHDOG_RESET();
 440         puts("DOC:   ");
 441         doc_init();
 442 #endif
 443
 444 #if defined(CONFIG_CMD_NET)
 445 #if defined(CONFIG_NET_MULTI)
 446         WATCHDOG_RESET();
 447         puts("Net:   ");
 448 #endif
 449         eth_initialize(bd);
 450 #endif
 451
 452 #if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R)
 453         WATCHDOG_RESET();
 454         debug("Reset Ethernet PHY\n");
 455         reset_phy();
 456 #endif
 457
 458 #ifdef CONFIG_POST
 459         post_run(NULL, POST_RAM | post_bootmode_get(0));
 460 #endif
 461
 462 #if defined(CONFIG_CMD_IDE)
 463         WATCHDOG_RESET();
 464         puts("IDE:   ");
 465         ide_init();
 466 #endif /* CONFIG_CMD_IDE */
 467
 468 #ifdef CONFIG_LAST_STAGE_INIT
 469         WATCHDOG_RESET();
 470         /*
 471          * Some parts can be only initialized if all others (like
 472          * Interrupts) are up and running (i.e. the PC-style ISA
 473          * keyboard).
 474          */
 475         last_stage_init();
 476 #endif
 477
 478 #ifdef CONFIG_PS2KBD
 479         puts("PS/2:  ");
 480         kbd_init();
 481 #endif
 482         prom_init();
 483
 484         /* main_loop */
 485         for (;;) {
 486                 WATCHDOG_RESET();
 487                 main_loop();
 488         }
 489
 490 }
 491
 492 void hang(void)
 493 {
 494         puts("### ERROR ### Please RESET the board ###\n");
 495 #ifdef CONFIG_SHOW_BOOT_PROGRESS
 496         show_boot_progress(-30);
 497 #endif
 498         for (;;) ;
 499 }
 500
 501 /************************************************************************/