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