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- .. SPDX-License-Identifier: GPL-2.0+
- AT91 Evaluation kits
- ====================
- Board mapping & boot media
- --------------------------
- AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Memory map::
- 0x20000000 - 23FFFFFF SDRAM (64 MB)
- 0xC0000000 - Cxxxxxxx Atmel Dataflash card (J13)
- 0xD0000000 - D07FFFFF Soldered Atmel Dataflash (AT45DB642)
- Environment variables
- U-Boot environment variables can be stored at different places:
- - Dataflash on SPI chip select 1 (default)
- - Dataflash on SPI chip select 0 (dataflash card)
- - Nand flash
- You can choose your storage location at config step (here for at91sam9260ek)::
- make at91sam9260ek_nandflash_config - use nand flash
- make at91sam9260ek_dataflash_cs0_config - use data flash (spi cs0)
- make at91sam9260ek_dataflash_cs1_config - use data flash (spi cs1)
- AT91SAM9261EK, AT91SAM9G10EK
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Memory map::
- 0x20000000 - 23FFFFFF SDRAM (64 MB)
- 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642)
- 0xD0000000 - Dxxxxxxx Atmel Dataflash card (J22)
- Environment variables
- U-Boot environment variables can be stored at different places:
- - Dataflash on SPI chip select 0 (default)
- - Dataflash on SPI chip select 3 (dataflash card)
- - Nand flash
- You can choose your storage location at config step (here for at91sam9260ek)::
- make at91sam9261ek_nandflash_config - use nand flash
- make at91sam9261ek_dataflash_cs0_config - use data flash (spi cs0)
- make at91sam9261ek_dataflash_cs3_config - use data flash (spi cs3)
- AT91SAM9263EK
- ^^^^^^^^^^^^^
- Memory map::
- 0x20000000 - 23FFFFFF SDRAM (64 MB)
- 0xC0000000 - Cxxxxxxx Atmel Dataflash card (J9)
- Environment variables
- U-Boot environment variables can be stored at different places:
- - Dataflash on SPI chip select 0 (dataflash card)
- - Nand flash
- - Nor flash (not populate by default)
- You can choose your storage location at config step (here for at91sam9260ek)::
- make at91sam9263ek_nandflash_config - use nand flash
- make at91sam9263ek_dataflash_cs0_config - use data flash (spi cs0)
- make at91sam9263ek_norflash_config - use nor flash
- You can choose to boot directly from U-Boot at config step::
- make at91sam9263ek_norflash_boot_config - boot from nor flash
- AT91SAM9M10G45EK
- ^^^^^^^^^^^^^^^^
- Memory map::
- 0x70000000 - 77FFFFFF SDRAM (128 MB)
- Environment variables
- U-Boot environment variables can be stored at different places:
- - Nand flash
- You can choose your storage location at config step (here for at91sam9m10g45ek)::
- make at91sam9m10g45ek_nandflash_config - use nand flash
- AT91SAM9RLEK
- ^^^^^^^^^^^^
- Memory map::
- 0x20000000 - 23FFFFFF SDRAM (64 MB)
- 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642)
- Environment variables
- U-Boot environment variables can be stored at different places:
- - Dataflash on SPI chip select 0
- - Nand flash.
- You can choose your storage location at config step (here for at91sam9rlek)::
- make at91sam9rlek_nandflash_config - use nand flash
- AT91SAM9N12EK, AT91SAM9X5EK
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^
- Memory map::
- 0x20000000 - 27FFFFFF SDRAM (128 MB)
- Environment variables
- U-Boot environment variables can be stored at different places:
- - Nand flash
- - SD/MMC card
- - Serialflash/Dataflash on SPI chip select 0
- You can choose your storage location at config step (here for at91sam9x5ek)::
- make at91sam9x5ek_dataflash_config - use data flash
- make at91sam9x5ek_mmc_config - use sd/mmc card
- make at91sam9x5ek_nandflash_config - use nand flash
- make at91sam9x5ek_spiflash_config - use serial flash
- SAMA5D3XEK
- ^^^^^^^^^^
- Memory map::
- 0x20000000 - 3FFFFFFF SDRAM (512 MB)
- Environment variables
- U-Boot environment variables can be stored at different places:
- - Nand flash
- - SD/MMC card
- - Serialflash on SPI chip select 0
- You can choose your storage location at config step (here for sama5d3xek)::
- make sama5d3xek_mmc_config - use SD/MMC card
- make sama5d3xek_nandflash_config - use nand flash
- make sama5d3xek_serialflash_config - use serial flash
- NAND partition table
- --------------------
- All the board support boot from NAND flash will use the following NAND
- partition table::
- 0x00000000 - 0x0003FFFF bootstrap (256 KiB)
- 0x00040000 - 0x000BFFFF u-boot (512 KiB)
- 0x000C0000 - 0x000FFFFF env (256 KiB)
- 0x00100000 - 0x0013FFFF env_redundant (256 KiB)
- 0x00140000 - 0x0017FFFF spare (256 KiB)
- 0x00180000 - 0x001FFFFF dtb (512 KiB)
- 0x00200000 - 0x007FFFFF kernel (6 MiB)
- 0x00800000 - 0xxxxxxxxx rootfs (All left)
- Watchdog support
- ----------------
- For security reasons, the at91 watchdog is running at boot time and,
- if deactivated, cannot be used anymore.
- If you want to use the watchdog, you will need to keep it running in
- your code (make sure not to disable it in AT91Bootstrap for instance).
- In the U-Boot configuration, the AT91 watchdog support is enabled using
- the CONFIG_WDT and CONFIG_WDT_AT91 options.
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