| .. 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. |
