X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=doc%2FREADME.at91;h=67412136eeba1760b2d117fb1f468eb1a0168d38;hb=bc55c07a2bc8435d427707d96b3b08fe1fa00198;hp=838769a9084c0461c528f0de1ac56cb0746a6305;hpb=13d36ec849785453953d00220b2c7dc66644a3c2;p=people%2Fms%2Fu-boot.git diff --git a/doc/README.at91 b/doc/README.at91 index 838769a908..67412136ee 100644 --- a/doc/README.at91 +++ b/doc/README.at91 @@ -1,15 +1,19 @@ Atmel AT91 Evaluation kits -http://atmel.com/dyn/products/tools.asp?family_id=605#1443 +Index + - I. Board mapping & boot media + - II. NAND partition table + - III. watchdog support +I. Board mapping & boot media ------------------------------------------------------------------------------ -AT91SAM9260EK +AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK ------------------------------------------------------------------------------ Memory map 0x20000000 - 23FFFFFF SDRAM (64 MB) 0xC0000000 - Cxxxxxxx Atmel Dataflash card (J13) - 0xD0000000 - Dxxxxxxx Soldered Atmel Dataflash + 0xD0000000 - D07FFFFF Soldered Atmel Dataflash (AT45DB642) Environment variables @@ -19,19 +23,18 @@ Environment variables - Nand flash. You can choose your storage location at config step (here for at91sam9260ek) : - make at91sam9260ek_config - use data flash (spi cs1) (default) 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 +AT91SAM9261EK, AT91SAM9G10EK ------------------------------------------------------------------------------ Memory map 0x20000000 - 23FFFFFF SDRAM (64 MB) - 0xC0000000 - Cxxxxxxx Soldered Atmel Dataflash + 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642) 0xD0000000 - Dxxxxxxx Atmel Dataflash card (J22) Environment variables @@ -42,7 +45,6 @@ Environment variables - Nand flash. You can choose your storage location at config step (here for at91sam9260ek) : - make at91sam9261ek_config - use data flash (spi cs0) (default) 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) @@ -61,11 +63,31 @@ 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_config - use data flash (spi cs0) (default) 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 ------------------------------------------------------------------------------ @@ -74,7 +96,7 @@ AT91SAM9RLEK Memory map 0x20000000 - 23FFFFFF SDRAM (64 MB) - 0xC0000000 - Cxxxxxxx Soldered Atmel Dataflash + 0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642) Environment variables @@ -82,7 +104,71 @@ Environment variables - Dataflash on SPI chip select 0 - Nand flash. - You can choose your storage location at config step (here for at91sam9260ek) : - make at91sam9263ek_config - use data flash (spi cs0) (default) - make at91sam9263ek_nandflash_config - use nand flash - make at91sam9263ek_dataflash_cs0_config - use data flash (spi cs0) + 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 + + +II. 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) + +III. 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_AT91SAM9_WATCHDOG and CONFIG_HW_WATCHDOG options.