README.at91 5.7 KB

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  1. Atmel AT91 Evaluation kits
  2. Index
  3. - I. Board mapping & boot media
  4. - II. NAND partition table
  5. - III. watchdog support
  6. I. Board mapping & boot media
  7. ------------------------------------------------------------------------------
  8. AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK
  9. ------------------------------------------------------------------------------
  10. Memory map
  11. 0x20000000 - 23FFFFFF SDRAM (64 MB)
  12. 0xC0000000 - Cxxxxxxx Atmel Dataflash card (J13)
  13. 0xD0000000 - D07FFFFF Soldered Atmel Dataflash (AT45DB642)
  14. Environment variables
  15. U-Boot environment variables can be stored at different places:
  16. - Dataflash on SPI chip select 1 (default)
  17. - Dataflash on SPI chip select 0 (dataflash card)
  18. - Nand flash.
  19. You can choose your storage location at config step (here for at91sam9260ek) :
  20. make at91sam9260ek_nandflash_config - use nand flash
  21. make at91sam9260ek_dataflash_cs0_config - use data flash (spi cs0)
  22. make at91sam9260ek_dataflash_cs1_config - use data flash (spi cs1)
  23. ------------------------------------------------------------------------------
  24. AT91SAM9261EK, AT91SAM9G10EK
  25. ------------------------------------------------------------------------------
  26. Memory map
  27. 0x20000000 - 23FFFFFF SDRAM (64 MB)
  28. 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642)
  29. 0xD0000000 - Dxxxxxxx Atmel Dataflash card (J22)
  30. Environment variables
  31. U-Boot environment variables can be stored at different places:
  32. - Dataflash on SPI chip select 0 (default)
  33. - Dataflash on SPI chip select 3 (dataflash card)
  34. - Nand flash.
  35. You can choose your storage location at config step (here for at91sam9260ek) :
  36. make at91sam9261ek_nandflash_config - use nand flash
  37. make at91sam9261ek_dataflash_cs0_config - use data flash (spi cs0)
  38. make at91sam9261ek_dataflash_cs3_config - use data flash (spi cs3)
  39. ------------------------------------------------------------------------------
  40. AT91SAM9263EK
  41. ------------------------------------------------------------------------------
  42. Memory map
  43. 0x20000000 - 23FFFFFF SDRAM (64 MB)
  44. 0xC0000000 - Cxxxxxxx Atmel Dataflash card (J9)
  45. Environment variables
  46. U-Boot environment variables can be stored at different places:
  47. - Dataflash on SPI chip select 0 (dataflash card)
  48. - Nand flash.
  49. - Nor flash (not populate by default)
  50. You can choose your storage location at config step (here for at91sam9260ek) :
  51. make at91sam9263ek_nandflash_config - use nand flash
  52. make at91sam9263ek_dataflash_cs0_config - use data flash (spi cs0)
  53. make at91sam9263ek_norflash_config - use nor flash
  54. You can choose to boot directly from U-Boot at config step
  55. make at91sam9263ek_norflash_boot_config - boot from nor flash
  56. ------------------------------------------------------------------------------
  57. AT91SAM9M10G45EK
  58. ------------------------------------------------------------------------------
  59. Memory map
  60. 0x70000000 - 77FFFFFF SDRAM (128 MB)
  61. Environment variables
  62. U-Boot environment variables can be stored at different places:
  63. - Nand flash.
  64. You can choose your storage location at config step (here for at91sam9m10g45ek) :
  65. make at91sam9m10g45ek_nandflash_config - use nand flash
  66. ------------------------------------------------------------------------------
  67. AT91SAM9RLEK
  68. ------------------------------------------------------------------------------
  69. Memory map
  70. 0x20000000 - 23FFFFFF SDRAM (64 MB)
  71. 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642)
  72. Environment variables
  73. U-Boot environment variables can be stored at different places:
  74. - Dataflash on SPI chip select 0
  75. - Nand flash.
  76. You can choose your storage location at config step (here for at91sam9rlek) :
  77. make at91sam9rlek_nandflash_config - use nand flash
  78. ------------------------------------------------------------------------------
  79. AT91SAM9N12EK, AT91SAM9X5EK
  80. ------------------------------------------------------------------------------
  81. Memory map
  82. 0x20000000 - 27FFFFFF SDRAM (128 MB)
  83. Environment variables
  84. U-Boot environment variables can be stored at different places:
  85. - Nand flash.
  86. - SD/MMC card
  87. - Serialflash/Dataflash on SPI chip select 0
  88. You can choose your storage location at config step (here for at91sam9x5ek) :
  89. make at91sam9x5ek_dataflash_config - use data flash
  90. make at91sam9x5ek_mmc_config - use sd/mmc card
  91. make at91sam9x5ek_nandflash_config - use nand flash
  92. make at91sam9x5ek_spiflash_config - use serial flash
  93. ------------------------------------------------------------------------------
  94. SAMA5D3XEK
  95. ------------------------------------------------------------------------------
  96. Memory map
  97. 0x20000000 - 3FFFFFFF SDRAM (512 MB)
  98. Environment variables
  99. U-Boot environment variables can be stored at different places:
  100. - Nand flash.
  101. - SD/MMC card
  102. - Serialflash on SPI chip select 0
  103. You can choose your storage location at config step (here for sama5d3xek) :
  104. make sama5d3xek_mmc_config - use SD/MMC card
  105. make sama5d3xek_nandflash_config - use nand flash
  106. make sama5d3xek_serialflash_config - use serial flash
  107. II. NAND partition table
  108. All the board support boot from NAND flash will use the following NAND
  109. partition table
  110. 0x00000000 - 0x0003FFFF bootstrap (256 KiB)
  111. 0x00040000 - 0x000BFFFF u-boot (512 KiB)
  112. 0x000C0000 - 0x000FFFFF env (256 KiB)
  113. 0x00100000 - 0x0013FFFF env_redundant (256 KiB)
  114. 0x00140000 - 0x0017FFFF spare (256 KiB)
  115. 0x00180000 - 0x001FFFFF dtb (512 KiB)
  116. 0x00200000 - 0x007FFFFF kernel (6 MiB)
  117. 0x00800000 - 0xxxxxxxxx rootfs (All left)
  118. III. Watchdog support
  119. For security reasons, the at91 watchdog is running at boot time and,
  120. if deactivated, cannot be used anymore.
  121. If you want to use the watchdog, you will need to keep it running in
  122. your code (make sure not to disable it in AT91Bootstrap for instance).
  123. In the U-Boot configuration, the AT91 watchdog support is enabled using
  124. the CONFIG_WDT and CONFIG_WDT_AT91 options.