LXR uboot/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
  56DECLARE_GLOBAL_DATA_PTR;
  57
  58/* Debug options
  59#define DEBUG_INIT_SEQUENCE
  60#define DEBUG_MEM_LAYOUT
  61#define DEBUG_COMMANDS
  62*/
  63
  64extern void timer_interrupt_init(void);
  65extern void malloc_bin_reloc(void);
  66extern int do_ambapp_print(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]);
  67extern int prom_init(void);
  68
  69#if defined(CONFIG__CMD_DOC)
  70void doc_init(void);
  71#endif
  72
  73#if !defined(CONFIG_SYS_NO_FLASH)
  74static char *failed = "*** failed ***\n";
  75#endif
  76
  77#include <environment.h>
  78
  79ulong 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
  88static 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 */
 113typedef int (init_fnc_t) (void);
 114
 115#define WATCHDOG_RESET(x)
 116
 117/************************************************************************
 118 * Initialization sequence                                              *
 119 ************************************************************************
 120 */
 121
 122init_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
 167char *str_init_seq = "INIT_SEQ 00\n";
 168char *str_init_seq_done = "\n\rInit sequence done...\r\n\r\n";
 169#endif
 170
 171void 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        /*
 256         * We have to relocate the command table manually
 257         */
 258        for (cmdtp = &__u_boot_cmd_start; cmdtp != &__u_boot_cmd_end; cmdtp++) {
 259                ulong addr;
 260                addr = (ulong) (cmdtp->cmd) + gd->reloc_off;
 261#if DEBUG_COMMANDS
 262                printf("Command \"%s\": 0x%08lx => 0x%08lx\n",
 263                       cmdtp->name, (ulong) (cmdtp->cmd), addr);
 264#endif
 265                cmdtp->cmd =
 266                    (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
 267
 268                addr = (ulong) (cmdtp->name) + gd->reloc_off;
 269                cmdtp->name = (char *)addr;
 270
 271                if (cmdtp->usage) {
 272                        addr = (ulong) (cmdtp->usage) + gd->reloc_off;
 273                        cmdtp->usage = (char *)addr;
 274                }
 275#ifdef  CONFIG_SYS_LONGHELP
 276                if (cmdtp->help) {
 277                        addr = (ulong) (cmdtp->help) + gd->reloc_off;
 278                        cmdtp->help = (char *)addr;
 279                }
 280#endif
 281        }
 282
 283#if defined(CONFIG_CMD_AMBAPP) && defined(CONFIG_SYS_AMBAPP_PRINT_ON_STARTUP)
 284        puts("AMBA:\n");
 285        do_ambapp_print(NULL, 0, 0, NULL);
 286#endif
 287
 288        /* initialize higher level parts of CPU like time base and timers */
 289        cpu_init_r();
 290
 291        /* start timer */
 292        timer_interrupt_init();
 293
 294        /*
 295         * Enable Interrupts before any calls to udelay,
 296         * the flash driver may use udelay resulting in
 297         * a hang if not timer0 IRQ is enabled.
 298         */
 299        interrupt_init();
 300
 301        /* The Malloc area is immediately below the monitor copy in RAM */
 302        mem_malloc_init(CONFIG_SYS_MALLOC_BASE,
 303                        CONFIG_SYS_MALLOC_END - CONFIG_SYS_MALLOC_BASE);
 304        malloc_bin_reloc();
 305
 306#if !defined(CONFIG_SYS_NO_FLASH)
 307        puts("FLASH: ");
 308
 309        if ((flash_size = flash_init()) > 0) {
 310# ifdef CONFIG_SYS_FLASH_CHECKSUM
 311                print_size(flash_size, "");
 312                /*
 313                 * Compute and print flash CRC if flashchecksum is set to 'y'
 314                 *
 315                 * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
 316                 */
 317                s = getenv("flashchecksum");
 318                if (s && (*s == 'y')) {
 319                        printf("  CRC: %08lX",
 320                               crc32(0, (const unsigned char *)CONFIG_SYS_FLASH_BASE,
 321                                     flash_size)
 322                            );
 323                }
 324                putc('\n');
 325# else                          /* !CONFIG_SYS_FLASH_CHECKSUM */
 326                print_size(flash_size, "\n");
 327# endif                         /* CONFIG_SYS_FLASH_CHECKSUM */
 328        } else {
 329                puts(failed);
 330                hang();
 331        }
 332
 333        bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;      /* update start of FLASH memory    */
 334        bd->bi_flashsize = flash_size;  /* size of FLASH memory (final value) */
 335#if CONFIG_SYS_MONITOR_BASE == CONFIG_SYS_FLASH_BASE
 336        bd->bi_flashoffset = monitor_flash_len; /* reserved area for startup monitor  */
 337#else
 338        bd->bi_flashoffset = 0;
 339#endif
 340#else                           /* CONFIG_SYS_NO_FLASH */
 341        bd->bi_flashsize = 0;
 342        bd->bi_flashstart = 0;
 343        bd->bi_flashoffset = 0;
 344#endif                          /* !CONFIG_SYS_NO_FLASH */
 345
 346#ifdef CONFIG_SPI
 347# if !defined(CONFIG_ENV_IS_IN_EEPROM)
 348        spi_init_f();
 349# endif
 350        spi_init_r();
 351#endif
 352
 353        /* relocate environment function pointers etc. */
 354        env_relocate();
 355
 356#if defined(CONFIG_BOARD_LATE_INIT)
 357        board_late_init();
 358#endif
 359
 360#ifdef CONFIG_ID_EEPROM
 361        mac_read_from_eeprom();
 362#endif
 363
 364        /* IP Address */
 365        bd->bi_ip_addr = getenv_IPaddr("ipaddr");
 366#if defined(CONFIG_PCI)
 367        /*
 368         * Do pci configuration
 369         */
 370        pci_init();
 371#endif
 372
 373        /* Initialize stdio devices */
 374        stdio_init();
 375
 376        /* Initialize the jump table for applications */
 377        jumptable_init();
 378
 379        /* Initialize the console (after the relocation and devices init) */
 380        console_init_r();
 381
 382#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
 383        serial_buffered_init();
 384#endif
 385
 386#ifdef CONFIG_STATUS_LED
 387        status_led_set(STATUS_LED_BOOT, STATUS_LED_BLINKING);
 388#endif
 389
 390        udelay(20);
 391
 392        set_timer(0);
 393
 394        /* Initialize from environment */
 395        if ((s = getenv("loadaddr")) != NULL) {
 396                load_addr = simple_strtoul(s, NULL, 16);
 397        }
 398#if defined(CONFIG_CMD_NET)
 399        if ((s = getenv("bootfile")) != NULL) {
 400                copy_filename(BootFile, s, sizeof(BootFile));
 401        }
 402#endif /* CONFIG_CMD_NET */
 403
 404        WATCHDOG_RESET();
 405
 406#if defined(CONFIG_CMD_DOC)
 407        WATCHDOG_RESET();
 408        puts("DOC:   ");
 409        doc_init();
 410#endif
 411
 412#ifdef CONFIG_BITBANGMII
 413        bb_miiphy_init();
 414#endif
 415#if defined(CONFIG_CMD_NET)
 416#if defined(CONFIG_NET_MULTI)
 417        WATCHDOG_RESET();
 418        puts("Net:   ");
 419#endif
 420        eth_initialize(bd);
 421#endif
 422
 423#if defined(CONFIG_CMD_NET) && defined(CONFIG_RESET_PHY_R)
 424        WATCHDOG_RESET();
 425        debug("Reset Ethernet PHY\n");
 426        reset_phy();
 427#endif
 428
 429#ifdef CONFIG_POST
 430        post_run(NULL, POST_RAM | post_bootmode_get(0));
 431#endif
 432
 433#if defined(CONFIG_CMD_IDE)
 434        WATCHDOG_RESET();
 435        puts("IDE:   ");
 436        ide_init();
 437#endif /* CONFIG_CMD_IDE */
 438
 439#ifdef CONFIG_LAST_STAGE_INIT
 440        WATCHDOG_RESET();
 441        /*
 442         * Some parts can be only initialized if all others (like
 443         * Interrupts) are up and running (i.e. the PC-style ISA
 444         * keyboard).
 445         */
 446        last_stage_init();
 447#endif
 448
 449#ifdef CONFIG_PS2KBD
 450        puts("PS/2:  ");
 451        kbd_init();
 452#endif
 453        prom_init();
 454
 455        /* main_loop */
 456        for (;;) {
 457                WATCHDOG_RESET();
 458                main_loop();
 459        }
 460
 461}
 462
 463void hang(void)
 464{
 465        puts("### ERROR ### Please RESET the board ###\n");
 466#ifdef CONFIG_SHOW_BOOT_PROGRESS
 467        show_boot_progress(-30);
 468#endif
 469        for (;;) ;
 470}
 471
 472/************************************************************************/
 473