cpu.c 3.4 KB

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  1. /*
  2. *
  3. * (C) Copyright 2000-2003
  4. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  5. *
  6. * Copyright (C) 2004-2008, 2012 Freescale Semiconductor, Inc.
  7. * TsiChung Liew (Tsi-Chung.Liew@freescale.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. #include <common.h>
  28. #include <watchdog.h>
  29. #include <command.h>
  30. #include <netdev.h>
  31. #include <asm/immap.h>
  32. #include <asm/io.h>
  33. DECLARE_GLOBAL_DATA_PTR;
  34. int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  35. {
  36. rcm_t *rcm = (rcm_t *) (MMAP_RCM);
  37. udelay(1000);
  38. setbits_8(&rcm->rcr, RCM_RCR_SOFTRST);
  39. /* we don't return! */
  40. return 0;
  41. };
  42. int checkcpu(void)
  43. {
  44. ccm_t *ccm = (ccm_t *) MMAP_CCM;
  45. u16 msk;
  46. u16 id = 0;
  47. u8 ver;
  48. puts("CPU: ");
  49. msk = (in_be16(&ccm->cir) >> 6);
  50. ver = (in_be16(&ccm->cir) & 0x003f);
  51. switch (msk) {
  52. #ifdef CONFIG_MCF5301x
  53. case 0x78:
  54. id = 53010;
  55. break;
  56. case 0x77:
  57. id = 53012;
  58. break;
  59. case 0x76:
  60. id = 53015;
  61. break;
  62. case 0x74:
  63. id = 53011;
  64. break;
  65. case 0x73:
  66. id = 53013;
  67. break;
  68. #endif
  69. #ifdef CONFIG_MCF532x
  70. case 0x54:
  71. id = 5329;
  72. break;
  73. case 0x59:
  74. id = 5328;
  75. break;
  76. case 0x61:
  77. id = 5327;
  78. break;
  79. case 0x65:
  80. id = 5373;
  81. break;
  82. case 0x68:
  83. id = 53721;
  84. break;
  85. case 0x69:
  86. id = 5372;
  87. break;
  88. case 0x6B:
  89. id = 5372;
  90. break;
  91. #endif
  92. }
  93. if (id) {
  94. char buf1[32], buf2[32];
  95. printf("Freescale MCF%d (Mask:%01x Version:%x)\n", id, msk,
  96. ver);
  97. printf(" CPU CLK %s MHz BUS CLK %s MHz\n",
  98. strmhz(buf1, gd->cpu_clk),
  99. strmhz(buf2, gd->bus_clk));
  100. }
  101. return 0;
  102. };
  103. #if defined(CONFIG_WATCHDOG)
  104. /* Called by macro WATCHDOG_RESET */
  105. void watchdog_reset(void)
  106. {
  107. wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
  108. /* Count register */
  109. out_be16(&wdp->sr, 0x5555);
  110. out_be16(&wdp->sr, 0xaaaa);
  111. }
  112. int watchdog_disable(void)
  113. {
  114. wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
  115. /* UserManual, once the wdog is disabled, wdog cannot be re-enabled */
  116. /* halted watchdog timer */
  117. setbits_be16(&wdp->cr, WTM_WCR_HALTED);
  118. puts("WATCHDOG:disabled\n");
  119. return (0);
  120. }
  121. int watchdog_init(void)
  122. {
  123. wdog_t *wdp = (wdog_t *) (MMAP_WDOG);
  124. u32 wdog_module = 0;
  125. /* set timeout and enable watchdog */
  126. wdog_module = ((CONFIG_SYS_CLK / 1000) * CONFIG_WATCHDOG_TIMEOUT);
  127. #ifdef CONFIG_M5329
  128. out_be16(&wdp->mr, wdog_module / 8192);
  129. #else
  130. out_be16(&wdp->mr, wdog_module / 4096);
  131. #endif
  132. out_be16(&wdp->cr, WTM_WCR_EN);
  133. puts("WATCHDOG:enabled\n");
  134. return (0);
  135. }
  136. #endif /* CONFIG_WATCHDOG */
  137. #if defined(CONFIG_MCFFEC)
  138. /* Default initializations for MCFFEC controllers. To override,
  139. * create a board-specific function called:
  140. * int board_eth_init(bd_t *bis)
  141. */
  142. int cpu_eth_init(bd_t *bis)
  143. {
  144. return mcffec_initialize(bis);
  145. }
  146. #endif