diff options
Diffstat (limited to 'doc/board/atmel/at91ek.rst')
| -rw-r--r-- | doc/board/atmel/at91ek.rst | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/doc/board/atmel/at91ek.rst b/doc/board/atmel/at91ek.rst new file mode 100644 index 0000000000..6185b1dfb2 --- /dev/null +++ b/doc/board/atmel/at91ek.rst @@ -0,0 +1,192 @@ +.. 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. |