[people/ms/u-boot.git] / doc / README.at91

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.
Commit	Line	Data
89a7a87f NF	1	Atmel AT91 Evaluation kits
89a7a87f NF	2
5ba444f0 BS	3	Index
	4	- I. Board mapping & boot media
	5	- II. NAND partition table
	6	- III. watchdog support
	7
843a2654	8	I. Board mapping & boot media
89a7a87f	9	------------------------------------------------------------------------------
df486b1f	10	AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK
89a7a87f NF	11	------------------------------------------------------------------------------
	12
	13	Memory map
	14	0x20000000 - 23FFFFFF SDRAM (64 MB)
	15	0xC0000000 - Cxxxxxxx Atmel Dataflash card (J13)
c9b23f80	16	0xD0000000 - D07FFFFF Soldered Atmel Dataflash (AT45DB642)
89a7a87f NF	17
	18	Environment variables
	19
	20	U-Boot environment variables can be stored at different places:
	21	- Dataflash on SPI chip select 1 (default)
	22	- Dataflash on SPI chip select 0 (dataflash card)
	23	- Nand flash.
	24
	25	You can choose your storage location at config step (here for at91sam9260ek) :
89a7a87f NF	26	make at91sam9260ek_nandflash_config - use nand flash
	27	make at91sam9260ek_dataflash_cs0_config - use data flash (spi cs0)
	28	make at91sam9260ek_dataflash_cs1_config - use data flash (spi cs1)
	29
	30
	31	------------------------------------------------------------------------------
5ccc2d99	32	AT91SAM9261EK, AT91SAM9G10EK
89a7a87f NF	33	------------------------------------------------------------------------------
	34
	35	Memory map
	36	0x20000000 - 23FFFFFF SDRAM (64 MB)
c9b23f80	37	0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642)
89a7a87f NF	38	0xD0000000 - Dxxxxxxx Atmel Dataflash card (J22)
	39
	40	Environment variables
	41
	42	U-Boot environment variables can be stored at different places:
	43	- Dataflash on SPI chip select 0 (default)
	44	- Dataflash on SPI chip select 3 (dataflash card)
	45	- Nand flash.
	46
	47	You can choose your storage location at config step (here for at91sam9260ek) :
89a7a87f NF	48	make at91sam9261ek_nandflash_config - use nand flash
	49	make at91sam9261ek_dataflash_cs0_config - use data flash (spi cs0)
	50	make at91sam9261ek_dataflash_cs3_config - use data flash (spi cs3)
	51
	52
	53	------------------------------------------------------------------------------
	54	AT91SAM9263EK
	55	------------------------------------------------------------------------------
	56
	57	Memory map
	58	0x20000000 - 23FFFFFF SDRAM (64 MB)
	59	0xC0000000 - Cxxxxxxx Atmel Dataflash card (J9)
	60
	61	Environment variables
	62
	63	U-Boot environment variables can be stored at different places:
	64	- Dataflash on SPI chip select 0 (dataflash card)
	65	- Nand flash.
c46bf09e	66	- Nor flash (not populate by default)
89a7a87f NF	67
89a7a87f NF	68	You can choose your storage location at config step (here for at91sam9260ek) :
89a7a87f NF	69	make at91sam9263ek_nandflash_config - use nand flash
89a7a87f NF	70	make at91sam9263ek_dataflash_cs0_config - use data flash (spi cs0)
c46bf09e	71	make at91sam9263ek_norflash_config - use nor flash
1b3b7c64 JCPV	72
1b3b7c64 JCPV	73	You can choose to boot directly from U-Boot at config step
c46bf09e	74	make at91sam9263ek_norflash_boot_config - boot from nor flash
89a7a87f NF	75
89a7a87f NF	76
22ee6473 SG	77	------------------------------------------------------------------------------
	78	AT91SAM9M10G45EK
	79	------------------------------------------------------------------------------
	80
	81	Memory map
c9b23f80	82	0x70000000 - 77FFFFFF SDRAM (128 MB)
22ee6473 SG	83
	84	Environment variables
	85
	86	U-Boot environment variables can be stored at different places:
22ee6473 SG	87	- Nand flash.
	88
	89	You can choose your storage location at config step (here for at91sam9m10g45ek) :
22ee6473	90	make at91sam9m10g45ek_nandflash_config - use nand flash
22ee6473 SG	91
22ee6473 SG	92
89a7a87f NF	93	------------------------------------------------------------------------------
	94	AT91SAM9RLEK
	95	------------------------------------------------------------------------------
	96
	97	Memory map
	98	0x20000000 - 23FFFFFF SDRAM (64 MB)
c9b23f80	99	0xC0000000 - C07FFFFF Soldered Atmel Dataflash (AT45DB642)
89a7a87f NF	100
	101	Environment variables
	102
	103	U-Boot environment variables can be stored at different places:
	104	- Dataflash on SPI chip select 0
	105	- Nand flash.
	106
c9b23f80 BS	107	You can choose your storage location at config step (here for at91sam9rlek) :
c9b23f80 BS	108	make at91sam9rlek_nandflash_config - use nand flash
843a2654	109
e9350d65 BS	110
	111	------------------------------------------------------------------------------
	112	AT91SAM9N12EK, AT91SAM9X5EK
	113	------------------------------------------------------------------------------
	114
	115	Memory map
	116	0x20000000 - 27FFFFFF SDRAM (128 MB)
	117
	118	Environment variables
	119
	120	U-Boot environment variables can be stored at different places:
	121	- Nand flash.
	122	- SD/MMC card
	123	- Serialflash/Dataflash on SPI chip select 0
	124
	125	You can choose your storage location at config step (here for at91sam9x5ek) :
	126	make at91sam9x5ek_dataflash_config - use data flash
	127	make at91sam9x5ek_mmc_config - use sd/mmc card
	128	make at91sam9x5ek_nandflash_config - use nand flash
	129	make at91sam9x5ek_spiflash_config - use serial flash
	130
	131
	132	------------------------------------------------------------------------------
	133	SAMA5D3XEK
	134	------------------------------------------------------------------------------
	135
	136	Memory map
	137	0x20000000 - 3FFFFFFF SDRAM (512 MB)
	138
	139	Environment variables
	140
	141	U-Boot environment variables can be stored at different places:
	142	- Nand flash.
	143	- SD/MMC card
	144	- Serialflash on SPI chip select 0
	145
	146	You can choose your storage location at config step (here for sama5d3xek) :
	147	make sama5d3xek_mmc_config - use SD/MMC card
	148	make sama5d3xek_nandflash_config - use nand flash
	149	make sama5d3xek_serialflash_config - use serial flash
	150
	151
5ba444f0 BS	152	II. NAND partition table
	153
	154	All the board support boot from NAND flash will use the following NAND
	155	partition table
	156
	157	0x00000000 - 0x0003FFFF bootstrap (256 KiB)
	158	0x00040000 - 0x000BFFFF u-boot (512 KiB)
	159	0x000C0000 - 0x000FFFFF env (256 KiB)
	160	0x00100000 - 0x0013FFFF env_redundant (256 KiB)
	161	0x00140000 - 0x0017FFFF spare (256 KiB)
	162	0x00180000 - 0x001FFFFF dtb (512 KiB)
	163	0x00200000 - 0x007FFFFF kernel (6 MiB)
	164	0x00800000 - 0xxxxxxxxx rootfs (All left)
	165
	166	III. Watchdog support
843a2654 JCPV	167
	168	For security reasons, the at91 watchdog is running at boot time and,
	169	if deactivated, cannot be used anymore.
	170	If you want to use the watchdog, you will need to keep it running in
	171	your code (make sure not to disable it in AT91Bootstrap for instance).
	172
	173	In the U-Boot configuration, the AT91 watchdog support is enabled using
	174	the CONFIG_AT91SAM9_WATCHDOG and CONFIG_HW_WATCHDOG options.