doc/README.at91

   1 Atmel AT91 Evaluation kits
   2
   3 Index
   4   - I. Board mapping & boot media
   5   - II. NAND partition table
   6   - III. watchdog support
   7
   8 I. Board mapping & boot media
   9 ------------------------------------------------------------------------------
  10 AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK
  11 ------------------------------------------------------------------------------
  12
  13 Memory map
  14         0x20000000 - 23FFFFFF   SDRAM (64 MB)
  15         0xC0000000 - Cxxxxxxx   Atmel Dataflash card (J13)
  16         0xD0000000 - D07FFFFF   Soldered Atmel Dataflash (AT45DB642)
  17
  18 Environment variables
  19
  20         U-Boot environment variables can be stored at different places:
  21                 - Dataflash on SPI chip select 1 (default)
  22                 - Dataflash on SPI chip select 0 (dataflash card)
  23                 - Nand flash.
  24
  25         You can choose your storage location at config step (here for at91sam9260ek) :
  26                 make at91sam9260ek_nandflash_config     - use nand flash
  27                 make at91sam9260ek_dataflash_cs0_config - use data flash (spi cs0)
  28                 make at91sam9260ek_dataflash_cs1_config - use data flash (spi cs1)
  29
  30
  31 ------------------------------------------------------------------------------
  32 AT91SAM9261EK, AT91SAM9G10EK
  33 ------------------------------------------------------------------------------
  34
  35 Memory map
  36         0x20000000 - 23FFFFFF   SDRAM (64 MB)
  37         0xC0000000 - C07FFFFF   Soldered Atmel Dataflash (AT45DB642)
  38         0xD0000000 - Dxxxxxxx   Atmel Dataflash card (J22)
  39
  40 Environment variables
  41
  42         U-Boot environment variables can be stored at different places:
  43                 - Dataflash on SPI chip select 0 (default)
  44                 - Dataflash on SPI chip select 3 (dataflash card)
  45                 - Nand flash.
  46
  47         You can choose your storage location at config step (here for at91sam9260ek) :
  48                 make at91sam9261ek_nandflash_config     - use nand flash
  49                 make at91sam9261ek_dataflash_cs0_config - use data flash (spi cs0)
  50                 make at91sam9261ek_dataflash_cs3_config - use data flash (spi cs3)
  51
  52
  53 ------------------------------------------------------------------------------
  54 AT91SAM9263EK
  55 ------------------------------------------------------------------------------
  56
  57 Memory map
  58         0x20000000 - 23FFFFFF   SDRAM (64 MB)
  59         0xC0000000 - Cxxxxxxx   Atmel Dataflash card (J9)
  60
  61 Environment variables
  62
  63         U-Boot environment variables can be stored at different places:
  64                 - Dataflash on SPI chip select 0 (dataflash card)
  65                 - Nand flash.
  66                 - Nor flash (not populate by default)
  67
  68         You can choose your storage location at config step (here for at91sam9260ek) :
  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 flash
  72
  73         You can choose to boot directly from U-Boot at config step
  74                 make at91sam9263ek_norflash_boot_config - boot from nor flash
  75
  76
  77 ------------------------------------------------------------------------------
  78 AT91SAM9M10G45EK
  79 ------------------------------------------------------------------------------
  80
  81 Memory map
  82         0x70000000 - 77FFFFFF   SDRAM (128 MB)
  83
  84 Environment variables
  85
  86         U-Boot environment variables can be stored at different places:
  87                 - Nand flash.
  88
  89         You can choose your storage location at config step (here for at91sam9m10g45ek) :
  90                 make at91sam9m10g45ek_nandflash_config          - use nand flash
  91
  92
  93 ------------------------------------------------------------------------------
  94 AT91SAM9RLEK
  95 ------------------------------------------------------------------------------
  96
  97 Memory map
  98         0x20000000 - 23FFFFFF   SDRAM (64 MB)
  99         0xC0000000 - C07FFFFF   Soldered Atmel Dataflash (AT45DB642)
 100
 101 Environment variables
 102
 103         U-Boot environment variables can be stored at different places:
 104                 - Dataflash on SPI chip select 0
 105                 - Nand flash.
 106
 107         You can choose your storage location at config step (here for at91sam9rlek) :
 108                 make at91sam9rlek_nandflash_config      - use nand flash
 109
 110
 111 ------------------------------------------------------------------------------
 112 AT91SAM9N12EK, AT91SAM9X5EK
 113 ------------------------------------------------------------------------------
 114
 115 Memory map
 116         0x20000000 - 27FFFFFF   SDRAM (128 MB)
 117
 118 Environment variables
 119
 120         U-Boot environment variables can be stored at different places:
 121                 - Nand flash.
 122                 - SD/MMC card
 123                 - Serialflash/Dataflash on SPI chip select 0
 124
 125         You can choose your storage location at config step (here for at91sam9x5ek) :
 126                 make at91sam9x5ek_dataflash_config      - use data flash
 127                 make at91sam9x5ek_mmc_config            - use sd/mmc card
 128                 make at91sam9x5ek_nandflash_config      - use nand flash
 129                 make at91sam9x5ek_spiflash_config       - use serial flash
 130
 131
 132 ------------------------------------------------------------------------------
 133 SAMA5D3XEK
 134 ------------------------------------------------------------------------------
 135
 136 Memory map
 137         0x20000000 - 3FFFFFFF   SDRAM (512 MB)
 138
 139 Environment variables
 140
 141         U-Boot environment variables can be stored at different places:
 142                 - Nand flash.
 143                 - SD/MMC card
 144                 - Serialflash on SPI chip select 0
 145
 146         You can choose your storage location at config step (here for sama5d3xek) :
 147                 make sama5d3xek_mmc_config              - use SD/MMC card
 148                 make sama5d3xek_nandflash_config        - use nand flash
 149                 make sama5d3xek_serialflash_config      - use serial flash
 150
 151
 152 II. NAND partition table
 153
 154         All the board support boot from NAND flash will use the following NAND
 155         partition table
 156
 157                 0x00000000 - 0x0003FFFF bootstrap       (256 KiB)
 158                 0x00040000 - 0x000BFFFF u-boot          (512 KiB)
 159                 0x000C0000 - 0x000FFFFF env             (256 KiB)
 160                 0x00100000 - 0x0013FFFF env_redundant   (256 KiB)
 161                 0x00140000 - 0x0017FFFF spare           (256 KiB)
 162                 0x00180000 - 0x001FFFFF dtb             (512 KiB)
 163                 0x00200000 - 0x007FFFFF kernel          (6 MiB)
 164                 0x00800000 - 0xxxxxxxxx rootfs          (All left)
 165
 166 III. Watchdog support
 167
 168         For security reasons, the at91 watchdog is running at boot time and,
 169         if deactivated, cannot be used anymore.
 170         If you want to use the watchdog, you will need to keep it running in
 171         your code (make sure not to disable it in AT91Bootstrap for instance).
 172
 173         In the U-Boot configuration, the AT91 watchdog support is enabled using
 174         the CONFIG_AT91SAM9_WATCHDOG and CONFIG_HW_WATCHDOG options.