board.c 4.4 KB

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  1. /*
  2. * (C) Copyright 2007 Michal Simek
  3. * (C) Copyright 2004 Atmark Techno, Inc.
  4. *
  5. * Michal SIMEK <monstr@monstr.eu>
  6. * Yasushi SHOJI <yashi@atmark-techno.com>
  7. *
  8. * See file CREDITS for list of people who contributed to this
  9. * project.
  10. *
  11. * This program is free software; you can redistribute it and/or
  12. * modify it under the terms of the GNU General Public License as
  13. * published by the Free Software Foundation; either version 2 of
  14. * the License, or (at your option) any later version.
  15. *
  16. * This program is distributed in the hope that it will be useful,
  17. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  19. * GNU General Public License for more details.
  20. *
  21. * You should have received a copy of the GNU General Public License
  22. * along with this program; if not, write to the Free Software
  23. * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24. * MA 02111-1307 USA
  25. */
  26. #include <common.h>
  27. #include <command.h>
  28. #include <malloc.h>
  29. #include <timestamp.h>
  30. #include <version.h>
  31. #include <watchdog.h>
  32. DECLARE_GLOBAL_DATA_PTR;
  33. const char version_string[] = U_BOOT_VERSION " ("U_BOOT_DATE" - "U_BOOT_TIME")";
  34. #ifdef CONFIG_SYS_GPIO_0
  35. extern int gpio_init (void);
  36. #endif
  37. #ifdef CONFIG_SYS_INTC_0
  38. extern int interrupts_init (void);
  39. #endif
  40. #if defined(CONFIG_CMD_NET)
  41. extern int eth_init (bd_t * bis);
  42. #endif
  43. /*
  44. * All attempts to come up with a "common" initialization sequence
  45. * that works for all boards and architectures failed: some of the
  46. * requirements are just _too_ different. To get rid of the resulting
  47. * mess of board dependend #ifdef'ed code we now make the whole
  48. * initialization sequence configurable to the user.
  49. *
  50. * The requirements for any new initalization function is simple: it
  51. * receives a pointer to the "global data" structure as it's only
  52. * argument, and returns an integer return code, where 0 means
  53. * "continue" and != 0 means "fatal error, hang the system".
  54. */
  55. typedef int (init_fnc_t) (void);
  56. init_fnc_t *init_sequence[] = {
  57. env_init,
  58. serial_init,
  59. #ifdef CONFIG_SYS_GPIO_0
  60. gpio_init,
  61. #endif
  62. #ifdef CONFIG_SYS_INTC_0
  63. interrupts_init,
  64. #endif
  65. NULL,
  66. };
  67. void board_init (void)
  68. {
  69. bd_t *bd;
  70. init_fnc_t **init_fnc_ptr;
  71. gd = (gd_t *) CONFIG_SYS_GBL_DATA_OFFSET;
  72. #if defined(CONFIG_CMD_FLASH)
  73. ulong flash_size = 0;
  74. #endif
  75. asm ("nop"); /* FIXME gd is not initialize - wait */
  76. memset ((void *)gd, 0, CONFIG_SYS_GBL_DATA_SIZE);
  77. gd->bd = (bd_t *) (gd + 1); /* At end of global data */
  78. gd->baudrate = CONFIG_BAUDRATE;
  79. bd = gd->bd;
  80. bd->bi_baudrate = CONFIG_BAUDRATE;
  81. bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
  82. bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
  83. gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
  84. /*
  85. * The Malloc area is immediately below the monitor copy in DRAM
  86. * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off
  87. * as our monitory code is run from SDRAM
  88. */
  89. mem_malloc_init (CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
  90. for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
  91. WATCHDOG_RESET ();
  92. if ((*init_fnc_ptr) () != 0) {
  93. hang ();
  94. }
  95. }
  96. puts ("SDRAM :\n");
  97. printf ("\t\tIcache:%s\n", icache_status() ? "OK" : "FAIL");
  98. printf ("\t\tDcache:%s\n", dcache_status() ? "OK" : "FAIL");
  99. printf ("\tU-Boot Start:0x%08x\n", TEXT_BASE);
  100. #if defined(CONFIG_CMD_FLASH)
  101. puts ("FLASH: ");
  102. bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
  103. if (0 < (flash_size = flash_init ())) {
  104. bd->bi_flashsize = flash_size;
  105. bd->bi_flashoffset = CONFIG_SYS_FLASH_BASE + flash_size;
  106. # ifdef CONFIG_SYS_FLASH_CHECKSUM
  107. print_size (flash_size, "");
  108. /*
  109. * Compute and print flash CRC if flashchecksum is set to 'y'
  110. *
  111. * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
  112. */
  113. s = getenv ("flashchecksum");
  114. if (s && (*s == 'y')) {
  115. printf (" CRC: %08X",
  116. crc32 (0, (const unsigned char *) CONFIG_SYS_FLASH_BASE, flash_size)
  117. );
  118. }
  119. putc ('\n');
  120. # else /* !CONFIG_SYS_FLASH_CHECKSUM */
  121. print_size (flash_size, "\n");
  122. # endif /* CONFIG_SYS_FLASH_CHECKSUM */
  123. } else {
  124. puts ("Flash init FAILED");
  125. bd->bi_flashstart = 0;
  126. bd->bi_flashsize = 0;
  127. bd->bi_flashoffset = 0;
  128. }
  129. #endif
  130. #if defined(CONFIG_CMD_NET)
  131. /* IP Address */
  132. bd->bi_ip_addr = getenv_IPaddr ("ipaddr");
  133. eth_init (bd);
  134. #endif
  135. /* relocate environment function pointers etc. */
  136. env_relocate ();
  137. /* main_loop */
  138. for (;;) {
  139. WATCHDOG_RESET ();
  140. main_loop ();
  141. }
  142. }
  143. void hang (void)
  144. {
  145. puts ("### ERROR ### Please RESET the board ###\n");
  146. for (;;) ;
  147. }