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