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https://github.com/AsahiLinux/u-boot
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843a2654bc
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
99 lines
3.6 KiB
Text
99 lines
3.6 KiB
Text
Atmel AT91 Evaluation kits
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http://atmel.com/dyn/products/tools.asp?family_id=605#1443
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I. Board mapping & boot media
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------------------------------------------------------------------------------
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AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK
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------------------------------------------------------------------------------
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Memory map
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0x20000000 - 23FFFFFF SDRAM (64 MB)
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0xC0000000 - Cxxxxxxx Atmel Dataflash card (J13)
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0xD0000000 - Dxxxxxxx Soldered Atmel Dataflash
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Environment variables
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U-Boot environment variables can be stored at different places:
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- Dataflash on SPI chip select 1 (default)
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- Dataflash on SPI chip select 0 (dataflash card)
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- Nand flash.
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You can choose your storage location at config step (here for at91sam9260ek) :
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make at91sam9260ek_config - use data flash (spi cs1) (default)
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make at91sam9260ek_nandflash_config - use nand flash
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make at91sam9260ek_dataflash_cs0_config - use data flash (spi cs0)
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make at91sam9260ek_dataflash_cs1_config - use data flash (spi cs1)
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------------------------------------------------------------------------------
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AT91SAM9261EK
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------------------------------------------------------------------------------
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Memory map
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0x20000000 - 23FFFFFF SDRAM (64 MB)
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0xC0000000 - Cxxxxxxx Soldered Atmel Dataflash
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0xD0000000 - Dxxxxxxx Atmel Dataflash card (J22)
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Environment variables
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U-Boot environment variables can be stored at different places:
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- Dataflash on SPI chip select 0 (default)
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- Dataflash on SPI chip select 3 (dataflash card)
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- Nand flash.
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You can choose your storage location at config step (here for at91sam9260ek) :
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make at91sam9261ek_config - use data flash (spi cs0) (default)
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make at91sam9261ek_nandflash_config - use nand flash
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make at91sam9261ek_dataflash_cs0_config - use data flash (spi cs0)
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make at91sam9261ek_dataflash_cs3_config - use data flash (spi cs3)
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------------------------------------------------------------------------------
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AT91SAM9263EK
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------------------------------------------------------------------------------
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Memory map
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0x20000000 - 23FFFFFF SDRAM (64 MB)
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0xC0000000 - Cxxxxxxx Atmel Dataflash card (J9)
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Environment variables
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U-Boot environment variables can be stored at different places:
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- Dataflash on SPI chip select 0 (dataflash card)
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- Nand flash.
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You can choose your storage location at config step (here for at91sam9260ek) :
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make at91sam9263ek_config - use data flash (spi cs0) (default)
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make at91sam9263ek_nandflash_config - use nand flash
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make at91sam9263ek_dataflash_cs0_config - use data flash (spi cs0)
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------------------------------------------------------------------------------
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AT91SAM9RLEK
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------------------------------------------------------------------------------
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Memory map
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0x20000000 - 23FFFFFF SDRAM (64 MB)
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0xC0000000 - Cxxxxxxx Soldered Atmel Dataflash
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Environment variables
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U-Boot environment variables can be stored at different places:
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- Dataflash on SPI chip select 0
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- Nand flash.
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You can choose your storage location at config step (here for at91sam9260ek) :
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make at91sam9263ek_config - use data flash (spi cs0) (default)
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make at91sam9263ek_nandflash_config - use nand flash
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make at91sam9263ek_dataflash_cs0_config - use data flash (spi cs0)
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II. Watchdog support
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For security reasons, the at91 watchdog is running at boot time and,
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if deactivated, cannot be used anymore.
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If you want to use the watchdog, you will need to keep it running in
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your code (make sure not to disable it in AT91Bootstrap for instance).
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In the U-Boot configuration, the AT91 watchdog support is enabled using
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the CONFIG_AT91SAM9_WATCHDOG and CONFIG_HW_WATCHDOG options.
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