1 Atmel AT91 Evaluation kits
4 - I. Board mapping & boot media
5 - II. NAND partition table
6 - III. watchdog support
8 I. Board mapping & boot media
9 ------------------------------------------------------------------------------
10 AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK
11 ------------------------------------------------------------------------------
14 0x20000000 - 23FFFFFF SDRAM (64 MB)
15 0xC0000000 - Cxxxxxxx Atmel Dataflash card (J13)
16 0xD0000000 - D07FFFFF Soldered Atmel Dataflash (AT45DB642)
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)
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)
31 ------------------------------------------------------------------------------
32 AT91SAM9261EK, AT91SAM9G10EK
33 ------------------------------------------------------------------------------
36 0x20000000 - 23FFFFFF SDRAM (64 MB)
37 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642)
38 0xD0000000 - Dxxxxxxx Atmel Dataflash card (J22)
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)
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)
53 ------------------------------------------------------------------------------
55 ------------------------------------------------------------------------------
58 0x20000000 - 23FFFFFF SDRAM (64 MB)
59 0xC0000000 - Cxxxxxxx Atmel Dataflash card (J9)
63 U-Boot environment variables can be stored at different places:
64 - Dataflash on SPI chip select 0 (dataflash card)
66 - Nor flash (not populate by default)
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
73 You can choose to boot directly from U-Boot at config step
74 make at91sam9263ek_norflash_boot_config - boot from nor flash
77 ------------------------------------------------------------------------------
79 ------------------------------------------------------------------------------
82 0x70000000 - 77FFFFFF SDRAM (128 MB)
86 U-Boot environment variables can be stored at different places:
89 You can choose your storage location at config step (here for at91sam9m10g45ek) :
90 make at91sam9m10g45ek_nandflash_config - use nand flash
93 ------------------------------------------------------------------------------
95 ------------------------------------------------------------------------------
98 0x20000000 - 23FFFFFF SDRAM (64 MB)
99 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642)
101 Environment variables
103 U-Boot environment variables can be stored at different places:
104 - Dataflash on SPI chip select 0
107 You can choose your storage location at config step (here for at91sam9rlek) :
108 make at91sam9rlek_nandflash_config - use nand flash
111 ------------------------------------------------------------------------------
112 AT91SAM9N12EK, AT91SAM9X5EK
113 ------------------------------------------------------------------------------
116 0x20000000 - 27FFFFFF SDRAM (128 MB)
118 Environment variables
120 U-Boot environment variables can be stored at different places:
123 - Serialflash/Dataflash on SPI chip select 0
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
132 ------------------------------------------------------------------------------
134 ------------------------------------------------------------------------------
137 0x20000000 - 3FFFFFFF SDRAM (512 MB)
139 Environment variables
141 U-Boot environment variables can be stored at different places:
144 - Serialflash on SPI chip select 0
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
152 II. NAND partition table
154 All the board support boot from NAND flash will use the following NAND
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)
166 III. Watchdog support
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).
173 In the U-Boot configuration, the AT91 watchdog support is enabled using
174 the CONFIG_WDT and CONFIG_WDT_AT91 options.