spl.c 2.1 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (C) 2013 Atmel Corporation
  4. * Bo Shen <voice.shen@atmel.com>
  5. */
  6. #include <common.h>
  7. #include <hang.h>
  8. #include <asm/io.h>
  9. #include <asm/arch/at91_common.h>
  10. #include <asm/arch/at91_wdt.h>
  11. #include <asm/arch/clk.h>
  12. #include <spl.h>
  13. #if !defined(CONFIG_WDT_AT91)
  14. void at91_disable_wdt(void)
  15. {
  16. struct at91_wdt *wdt = (struct at91_wdt *)ATMEL_BASE_WDT;
  17. writel(AT91_WDT_MR_WDDIS, &wdt->mr);
  18. }
  19. #endif
  20. #if defined(CONFIG_SAMA5D2) || defined(CONFIG_SAMA5D3) || \
  21. defined(CONFIG_SAMA5D4)
  22. #include <asm/arch/sama5_boot.h>
  23. struct {
  24. u32 r4;
  25. } bootrom_stash __section(".data");
  26. u32 spl_boot_device(void)
  27. {
  28. u32 dev = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_FROM_OFF) &
  29. ATMEL_SAMA5_BOOT_FROM_MASK;
  30. u32 off = (bootrom_stash.r4 >> ATMEL_SAMA5_BOOT_DEV_ID_OFF) &
  31. ATMEL_SAMA5_BOOT_DEV_ID_MASK;
  32. #if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT)
  33. if (dev == ATMEL_SAMA5_BOOT_FROM_MCI) {
  34. #if defined(CONFIG_SPL_OF_CONTROL)
  35. return BOOT_DEVICE_MMC1;
  36. #else
  37. if (off == 0)
  38. return BOOT_DEVICE_MMC1;
  39. if (off == 1)
  40. return BOOT_DEVICE_MMC2;
  41. printf("ERROR: MMC controller %i not present!\n", dev);
  42. hang();
  43. #endif
  44. }
  45. #endif
  46. #if defined(CONFIG_SYS_USE_SERIALFLASH) || \
  47. defined(CONFIG_SYS_USE_SPIFLASH) || \
  48. defined(CONFIG_SPI_BOOT)
  49. if (dev == ATMEL_SAMA5_BOOT_FROM_SPI)
  50. return BOOT_DEVICE_SPI;
  51. #endif
  52. if (dev == ATMEL_SAMA5_BOOT_FROM_QSPI)
  53. return BOOT_DEVICE_SPI;
  54. if (dev == ATMEL_SAMA5_BOOT_FROM_SMC)
  55. return BOOT_DEVICE_NAND;
  56. if (dev == ATMEL_SAMA5_BOOT_FROM_SAMBA)
  57. return BOOT_DEVICE_USB;
  58. printf("ERROR: SMC/TWI/QSPI boot device not supported!\n"
  59. " Boot device %i, controller number %i\n", dev, off);
  60. return BOOT_DEVICE_NONE;
  61. }
  62. #else
  63. u32 spl_boot_device(void)
  64. {
  65. #if defined(CONFIG_SYS_USE_MMC) || defined(CONFIG_SD_BOOT)
  66. return BOOT_DEVICE_MMC1;
  67. #elif defined(CONFIG_SYS_USE_NANDFLASH) || defined(CONFIG_NAND_BOOT)
  68. return BOOT_DEVICE_NAND;
  69. #elif defined(CONFIG_SYS_USE_SERIALFLASH) || \
  70. defined(CONFIG_SYS_USE_SPIFLASH) || \
  71. defined(CONFIG_SPI_BOOT)
  72. return BOOT_DEVICE_SPI;
  73. #endif
  74. return BOOT_DEVICE_NONE;
  75. }
  76. #endif