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