m5208evbe.c 1.6 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  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. #include <config.h>
  10. #include <common.h>
  11. #include <asm/immap.h>
  12. #include <asm/io.h>
  13. DECLARE_GLOBAL_DATA_PTR;
  14. int checkboard(void)
  15. {
  16. puts("Board: ");
  17. puts("Freescale M5208EVBe\n");
  18. return 0;
  19. };
  20. int dram_init(void)
  21. {
  22. sdram_t *sdram = (sdram_t *)(MMAP_SDRAM);
  23. u32 dramsize, i;
  24. dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000;
  25. for (i = 0x13; i < 0x20; i++) {
  26. if (dramsize == (1 << i))
  27. break;
  28. }
  29. i--;
  30. out_be32(&sdram->cs0, CONFIG_SYS_SDRAM_BASE | i);
  31. #ifdef CONFIG_SYS_SDRAM_BASE1
  32. out_be32(&sdram->cs1, CONFIG_SYS_SDRAM_BASE | i);
  33. #endif
  34. out_be32(&sdram->cfg1, CONFIG_SYS_SDRAM_CFG1);
  35. out_be32(&sdram->cfg2, CONFIG_SYS_SDRAM_CFG2);
  36. udelay(500);
  37. /* Issue PALL */
  38. out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
  39. asm("nop");
  40. /* Perform two refresh cycles */
  41. out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
  42. out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 4);
  43. asm("nop");
  44. /* Issue LEMR */
  45. out_be32(&sdram->mode, CONFIG_SYS_SDRAM_MODE);
  46. asm("nop");
  47. out_be32(&sdram->mode, CONFIG_SYS_SDRAM_EMOD);
  48. asm("nop");
  49. out_be32(&sdram->ctrl, CONFIG_SYS_SDRAM_CTRL | 2);
  50. asm("nop");
  51. out_be32(&sdram->ctrl,
  52. (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000F00);
  53. asm("nop");
  54. udelay(100);
  55. gd->ram_size = dramsize;
  56. return 0;
  57. };
  58. int testdram(void)
  59. {
  60. /* TODO: XXX XXX XXX */
  61. printf("DRAM test not implemented!\n");
  62. return (0);
  63. }