doc/README.at91

   1 Atmel AT91 Evaluation kits
   2
   3 http://atmel.com/dyn/products/tools.asp?family_id=605#1443
   4
   5 I. Board mapping & boot media
   6 ------------------------------------------------------------------------------
   7 AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK
   8 ------------------------------------------------------------------------------
   9
  10 Memory map
  11         0x20000000 - 23FFFFFF   SDRAM (64 MB)
  12         0xC0000000 - Cxxxxxxx   Atmel Dataflash card (J13)
  13         0xD0000000 - Dxxxxxxx   Soldered Atmel Dataflash
  14
  15 Environment variables
  16
  17         U-Boot environment variables can be stored at different places:
  18                 - Dataflash on SPI chip select 1 (default)
  19                 - Dataflash on SPI chip select 0 (dataflash card)
  20                 - Nand flash.
  21
  22         You can choose your storage location at config step (here for at91sam9260ek) :
  23                 make at91sam9260ek_config               - use data flash (spi cs1) (default)
  24                 make at91sam9260ek_nandflash_config     - use nand flash
  25                 make at91sam9260ek_dataflash_cs0_config - use data flash (spi cs0)
  26                 make at91sam9260ek_dataflash_cs1_config - use data flash (spi cs1)
  27
  28
  29 ------------------------------------------------------------------------------
  30 AT91SAM9261EK
  31 ------------------------------------------------------------------------------
  32
  33 Memory map
  34         0x20000000 - 23FFFFFF   SDRAM (64 MB)
  35         0xC0000000 - Cxxxxxxx   Soldered Atmel Dataflash
  36         0xD0000000 - Dxxxxxxx   Atmel Dataflash card (J22)
  37
  38 Environment variables
  39
  40         U-Boot environment variables can be stored at different places:
  41                 - Dataflash on SPI chip select 0 (default)
  42                 - Dataflash on SPI chip select 3 (dataflash card)
  43                 - Nand flash.
  44
  45         You can choose your storage location at config step (here for at91sam9260ek) :
  46                 make at91sam9261ek_config               - use data flash (spi cs0) (default)
  47                 make at91sam9261ek_nandflash_config     - use nand flash
  48                 make at91sam9261ek_dataflash_cs0_config - use data flash (spi cs0)
  49                 make at91sam9261ek_dataflash_cs3_config - use data flash (spi cs3)
  50
  51
  52 ------------------------------------------------------------------------------
  53 AT91SAM9263EK
  54 ------------------------------------------------------------------------------
  55
  56 Memory map
  57         0x20000000 - 23FFFFFF   SDRAM (64 MB)
  58         0xC0000000 - Cxxxxxxx   Atmel Dataflash card (J9)
  59
  60 Environment variables
  61
  62         U-Boot environment variables can be stored at different places:
  63                 - Dataflash on SPI chip select 0 (dataflash card)
  64                 - Nand flash.
  65                 - Nor falsh (not populate by default)
  66
  67         You can choose your storage location at config step (here for at91sam9260ek) :
  68                 make at91sam9263ek_config               - use data flash (spi cs0) (default)
  69                 make at91sam9263ek_nandflash_config     - use nand flash
  70                 make at91sam9263ek_dataflash_cs0_config - use data flash (spi cs0)
  71                 make at91sam9263ek_norflash_config      - use nor falsh
  72
  73         You can choose to boot directly from U-Boot at config step
  74                 make at91sam9263ek_norflash_boot_config - boot from nor falsh
  75
  76
  77 ------------------------------------------------------------------------------
  78 AT91SAM9RLEK
  79 ------------------------------------------------------------------------------
  80
  81 Memory map
  82         0x20000000 - 23FFFFFF   SDRAM (64 MB)
  83         0xC0000000 - Cxxxxxxx   Soldered Atmel Dataflash
  84
  85 Environment variables
  86
  87         U-Boot environment variables can be stored at different places:
  88                 - Dataflash on SPI chip select 0
  89                 - Nand flash.
  90
  91         You can choose your storage location at config step (here for at91sam9260ek) :
  92                 make at91sam9263ek_config               - use data flash (spi cs0) (default)
  93                 make at91sam9263ek_nandflash_config     - use nand flash
  94                 make at91sam9263ek_dataflash_cs0_config - use data flash (spi cs0)
  95
  96 II. Watchdog support
  97
  98         For security reasons, the at91 watchdog is running at boot time and,
  99         if deactivated, cannot be used anymore.
 100         If you want to use the watchdog, you will need to keep it running in
 101         your code (make sure not to disable it in AT91Bootstrap for instance).
 102
 103         In the U-Boot configuration, the AT91 watchdog support is enabled using
 104         the CONFIG_AT91SAM9_WATCHDOG and CONFIG_HW_WATCHDOG options.