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