1Atmel AT91 Evaluation kits 2 3Index 4 - I. Board mapping & boot media 5 - II. NAND partition table 6 - III. watchdog support 7 8I. Board mapping & boot media 9------------------------------------------------------------------------------ 10AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK 11------------------------------------------------------------------------------ 12 13Memory map 14 0x20000000 - 23FFFFFF SDRAM (64 MB) 15 0xC0000000 - Cxxxxxxx Atmel Dataflash card (J13) 16 0xD0000000 - D07FFFFF Soldered Atmel Dataflash (AT45DB642) 17 18Environment 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------------------------------------------------------------------------------ 32AT91SAM9261EK, AT91SAM9G10EK 33------------------------------------------------------------------------------ 34 35Memory map 36 0x20000000 - 23FFFFFF SDRAM (64 MB) 37 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642) 38 0xD0000000 - Dxxxxxxx Atmel Dataflash card (J22) 39 40Environment 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------------------------------------------------------------------------------ 54AT91SAM9263EK 55------------------------------------------------------------------------------ 56 57Memory map 58 0x20000000 - 23FFFFFF SDRAM (64 MB) 59 0xC0000000 - Cxxxxxxx Atmel Dataflash card (J9) 60 61Environment 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------------------------------------------------------------------------------ 78AT91SAM9M10G45EK 79------------------------------------------------------------------------------ 80 81Memory map 82 0x70000000 - 77FFFFFF SDRAM (128 MB) 83 84Environment 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------------------------------------------------------------------------------ 94AT91SAM9RLEK 95------------------------------------------------------------------------------ 96 97Memory map 98 0x20000000 - 23FFFFFF SDRAM (64 MB) 99 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642) 100 101Environment 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------------------------------------------------------------------------------ 112AT91SAM9N12EK, AT91SAM9X5EK 113------------------------------------------------------------------------------ 114 115Memory map 116 0x20000000 - 27FFFFFF SDRAM (128 MB) 117 118Environment 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------------------------------------------------------------------------------ 133SAMA5D3XEK 134------------------------------------------------------------------------------ 135 136Memory map 137 0x20000000 - 3FFFFFFF SDRAM (512 MB) 138 139Environment 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 152II. 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 166III. 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. 175