eb_cpu5282.c 5.5 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * (C) Copyright 2005-2009
  4. * BuS Elektronik GmbH & Co.KG <esw@bus-elektonik.de>
  5. *
  6. * (C) Copyright 2000-2003
  7. * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  8. */
  9. #include <common.h>
  10. #include <command.h>
  11. #include <asm/global_data.h>
  12. #include "asm/m5282.h"
  13. #include <bmp_layout.h>
  14. #include <env.h>
  15. #include <init.h>
  16. #include <status_led.h>
  17. #include <bus_vcxk.h>
  18. /*---------------------------------------------------------------------------*/
  19. DECLARE_GLOBAL_DATA_PTR;
  20. #if IS_ENABLED(CONFIG_VIDEO_VCXK)
  21. extern unsigned long display_width;
  22. extern unsigned long display_height;
  23. #endif
  24. /*---------------------------------------------------------------------------*/
  25. int checkboard (void)
  26. {
  27. puts("Board: EB+CPU5282 (BuS Elektronik GmbH & Co. KG)\n");
  28. #if (CONFIG_SYS_TEXT_BASE == CONFIG_SYS_INT_FLASH_BASE)
  29. puts(" Boot from Internal FLASH\n");
  30. #endif
  31. return 0;
  32. }
  33. int dram_init(void)
  34. {
  35. int size, i;
  36. size = 0;
  37. MCFSDRAMC_DCR = MCFSDRAMC_DCR_RTIM_6 |
  38. MCFSDRAMC_DCR_RC((15 * CONFIG_SYS_CLK / 1000000) >> 4);
  39. asm (" nop");
  40. #ifdef CONFIG_SYS_SDRAM_BASE0
  41. MCFSDRAMC_DACR0 = MCFSDRAMC_DACR_BASE(CONFIG_SYS_SDRAM_BASE0)|
  42. MCFSDRAMC_DACR_CASL(1) | MCFSDRAMC_DACR_CBM(3) |
  43. MCFSDRAMC_DACR_PS_32;
  44. asm (" nop");
  45. MCFSDRAMC_DMR0 = MCFSDRAMC_DMR_BAM_16M | MCFSDRAMC_DMR_V;
  46. asm (" nop");
  47. MCFSDRAMC_DACR0 |= MCFSDRAMC_DACR_IP;
  48. asm (" nop");
  49. for (i = 0; i < 10; i++)
  50. asm (" nop");
  51. *(unsigned long *)(CONFIG_SYS_SDRAM_BASE0) = 0xA5A5A5A5;
  52. asm (" nop");
  53. MCFSDRAMC_DACR0 |= MCFSDRAMC_DACR_RE;
  54. asm (" nop");
  55. for (i = 0; i < 2000; i++)
  56. asm (" nop");
  57. MCFSDRAMC_DACR0 |= MCFSDRAMC_DACR_IMRS;
  58. asm (" nop");
  59. /* write SDRAM mode register */
  60. *(unsigned long *)(CONFIG_SYS_SDRAM_BASE0 + 0x80440) = 0xA5A5A5A5;
  61. asm (" nop");
  62. size += CONFIG_SYS_SDRAM_SIZE0 * 1024 * 1024;
  63. #endif
  64. #ifdef CONFIG_SYS_SDRAM_BASE1xx
  65. MCFSDRAMC_DACR1 = MCFSDRAMC_DACR_BASE (CONFIG_SYS_SDRAM_BASE1)
  66. | MCFSDRAMC_DACR_CASL (1)
  67. | MCFSDRAMC_DACR_CBM (3)
  68. | MCFSDRAMC_DACR_PS_16;
  69. MCFSDRAMC_DMR1 = MCFSDRAMC_DMR_BAM_16M | MCFSDRAMC_DMR_V;
  70. MCFSDRAMC_DACR1 |= MCFSDRAMC_DACR_IP;
  71. *(unsigned short *) (CONFIG_SYS_SDRAM_BASE1) = 0xA5A5;
  72. MCFSDRAMC_DACR1 |= MCFSDRAMC_DACR_RE;
  73. for (i = 0; i < 2000; i++)
  74. asm (" nop");
  75. MCFSDRAMC_DACR1 |= MCFSDRAMC_DACR_IMRS;
  76. *(unsigned int *) (CONFIG_SYS_SDRAM_BASE1 + 0x220) = 0xA5A5;
  77. size += CONFIG_SYS_SDRAM_SIZE1 * 1024 * 1024;
  78. #endif
  79. gd->ram_size = size;
  80. return 0;
  81. }
  82. #if defined(CONFIG_SYS_DRAM_TEST)
  83. int testdram(void)
  84. {
  85. uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
  86. uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
  87. uint *p;
  88. printf("SDRAM test phase 1:\n");
  89. for (p = pstart; p < pend; p++)
  90. *p = 0xaaaaaaaa;
  91. for (p = pstart; p < pend; p++) {
  92. if (*p != 0xaaaaaaaa) {
  93. printf ("SDRAM test fails at: %08x\n", (uint) p);
  94. return 1;
  95. }
  96. }
  97. printf("SDRAM test phase 2:\n");
  98. for (p = pstart; p < pend; p++)
  99. *p = 0x55555555;
  100. for (p = pstart; p < pend; p++) {
  101. if (*p != 0x55555555) {
  102. printf ("SDRAM test fails at: %08x\n", (uint) p);
  103. return 1;
  104. }
  105. }
  106. printf("SDRAM test passed.\n");
  107. return 0;
  108. }
  109. #endif
  110. #if defined(CONFIG_HW_WATCHDOG)
  111. void hw_watchdog_init(void)
  112. {
  113. char *s;
  114. int enable;
  115. enable = 1;
  116. s = env_get("watchdog");
  117. if (s != NULL)
  118. if ((strncmp(s, "off", 3) == 0) || (strncmp(s, "0", 1) == 0))
  119. enable = 0;
  120. if (enable)
  121. MCFGPTA_GPTDDR |= (1<<2);
  122. else
  123. MCFGPTA_GPTDDR &= ~(1<<2);
  124. }
  125. void hw_watchdog_reset(void)
  126. {
  127. MCFGPTA_GPTPORT ^= (1<<2);
  128. }
  129. #endif
  130. int misc_init_r(void)
  131. {
  132. #ifdef CONFIG_HW_WATCHDOG
  133. hw_watchdog_init();
  134. #endif
  135. return 1;
  136. }
  137. void __led_toggle(led_id_t mask)
  138. {
  139. MCFGPTA_GPTPORT ^= (1 << 3);
  140. }
  141. void __led_init(led_id_t mask, int state)
  142. {
  143. __led_set(mask, state);
  144. MCFGPTA_GPTDDR |= (1 << 3);
  145. }
  146. void __led_set(led_id_t mask, int state)
  147. {
  148. if (state == CONFIG_LED_STATUS_ON)
  149. MCFGPTA_GPTPORT |= (1 << 3);
  150. else
  151. MCFGPTA_GPTPORT &= ~(1 << 3);
  152. }
  153. #if IS_ENABLED(CONFIG_VIDEO_VCXK)
  154. int drv_video_init(void)
  155. {
  156. char *s;
  157. #ifdef CONFIG_SPLASH_SCREEN
  158. unsigned long splash;
  159. #endif
  160. printf("Init Video as ");
  161. s = env_get("displaywidth");
  162. if (s != NULL)
  163. display_width = dectoul(s, NULL);
  164. else
  165. display_width = 256;
  166. s = env_get("displayheight");
  167. if (s != NULL)
  168. display_height = dectoul(s, NULL);
  169. else
  170. display_height = 256;
  171. printf("%lu x %lu pixel matrix\n", display_width, display_height);
  172. MCFCCM_CCR &= ~MCFCCM_CCR_SZEN;
  173. MCFGPIO_PEPAR &= ~MCFGPIO_PEPAR_PEPA2;
  174. vcxk_init(display_width, display_height);
  175. #ifdef CONFIG_SPLASH_SCREEN
  176. s = env_get("splashimage");
  177. if (s != NULL) {
  178. splash = hextoul(s, NULL);
  179. vcxk_acknowledge_wait();
  180. video_display_bitmap(splash, 0, 0);
  181. }
  182. #endif
  183. return 0;
  184. }
  185. #endif
  186. /*---------------------------------------------------------------------------*/
  187. #if IS_ENABLED(CONFIG_VIDEO_VCXK)
  188. int do_brightness(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
  189. {
  190. int rcode = 0;
  191. ulong side;
  192. ulong bright;
  193. switch (argc) {
  194. case 3:
  195. side = dectoul(argv[1], NULL);
  196. bright = dectoul(argv[2], NULL);
  197. if ((side >= 0) && (side <= 3) &&
  198. (bright >= 0) && (bright <= 1000)) {
  199. vcxk_setbrightness(side, bright);
  200. rcode = 0;
  201. } else {
  202. printf("parameters out of range\n");
  203. printf("Usage:\n%s\n", cmdtp->usage);
  204. rcode = 1;
  205. }
  206. break;
  207. default:
  208. printf("Usage:\n%s\n", cmdtp->usage);
  209. rcode = 1;
  210. break;
  211. }
  212. return rcode;
  213. }
  214. /*---------------------------------------------------------------------------*/
  215. U_BOOT_CMD(
  216. bright, 3, 0, do_brightness,
  217. "sets the display brightness\n",
  218. " <side> <0..1000>\n side: 0/3=both; 1=first; 2=second\n"
  219. );
  220. #endif
  221. /* EOF EB+MCF-EV123.c */