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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/u-boot/doc/README.at91
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
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+Atmel AT91 Evaluation kits
+
+Index
+ - I. Board mapping & boot media
+ - II. NAND partition table
+ - III. watchdog support
+
+I. 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
+
+
+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.