xref: /openbmc/u-boot/doc/README.at91 (revision 5794619e)
1Atmel AT91 Evaluation kits
2
3http://atmel.com/dyn/products/tools.asp?family_id=605#1443
4
5I. Board mapping & boot media
6------------------------------------------------------------------------------
7AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK
8------------------------------------------------------------------------------
9
10Memory map
11	0x20000000 - 23FFFFFF	SDRAM (64 MB)
12	0xC0000000 - Cxxxxxxx	Atmel Dataflash card (J13)
13	0xD0000000 - Dxxxxxxx	Soldered Atmel Dataflash
14
15Environment variables
16
17	U-Boot environment variables can be stored at different places:
18		- Dataflash on SPI chip select 1 (default)
19		- Dataflash on SPI chip select 0 (dataflash card)
20		- Nand flash.
21
22	You can choose your storage location at config step (here for at91sam9260ek) :
23		make at91sam9260ek_config		- use data flash (spi cs1) (default)
24		make at91sam9260ek_nandflash_config	- use nand flash
25		make at91sam9260ek_dataflash_cs0_config	- use data flash (spi cs0)
26		make at91sam9260ek_dataflash_cs1_config	- use data flash (spi cs1)
27
28
29------------------------------------------------------------------------------
30AT91SAM9261EK, AT91SAM9G10EK
31------------------------------------------------------------------------------
32
33Memory map
34	0x20000000 - 23FFFFFF	SDRAM (64 MB)
35	0xC0000000 - Cxxxxxxx	Soldered Atmel Dataflash
36	0xD0000000 - Dxxxxxxx	Atmel Dataflash card (J22)
37
38Environment variables
39
40	U-Boot environment variables can be stored at different places:
41		- Dataflash on SPI chip select 0 (default)
42		- Dataflash on SPI chip select 3 (dataflash card)
43		- Nand flash.
44
45	You can choose your storage location at config step (here for at91sam9260ek) :
46		make at91sam9261ek_config		- use data flash (spi cs0) (default)
47		make at91sam9261ek_nandflash_config	- use nand flash
48		make at91sam9261ek_dataflash_cs0_config	- use data flash (spi cs0)
49		make at91sam9261ek_dataflash_cs3_config	- use data flash (spi cs3)
50
51
52------------------------------------------------------------------------------
53AT91SAM9263EK
54------------------------------------------------------------------------------
55
56Memory map
57	0x20000000 - 23FFFFFF	SDRAM (64 MB)
58	0xC0000000 - Cxxxxxxx	Atmel Dataflash card (J9)
59
60Environment variables
61
62	U-Boot environment variables can be stored at different places:
63		- Dataflash on SPI chip select 0 (dataflash card)
64		- Nand flash.
65		- Nor falsh (not populate by default)
66
67	You can choose your storage location at config step (here for at91sam9260ek) :
68		make at91sam9263ek_config		- use data flash (spi cs0) (default)
69		make at91sam9263ek_nandflash_config	- use nand flash
70		make at91sam9263ek_dataflash_cs0_config	- use data flash (spi cs0)
71		make at91sam9263ek_norflash_config	- use nor falsh
72
73	You can choose to boot directly from U-Boot at config step
74		make at91sam9263ek_norflash_boot_config	- boot from nor falsh
75
76
77------------------------------------------------------------------------------
78AT91SAM9M10G45EK
79------------------------------------------------------------------------------
80
81Memory map
82	0x20000000 - 23FFFFFF	SDRAM (64 MB)
83	0xC0000000 - Cxxxxxxx	Atmel Dataflash card (J12)
84
85Environment variables
86
87	U-Boot environment variables can be stored at different places:
88		- Dataflash on SPI chip select 0 (dataflash card)
89		- Nand flash.
90
91	You can choose your storage location at config step (here for at91sam9m10g45ek) :
92		make at91sam9m10g45ek_config			- use data flash (spi cs0) (default)
93		make at91sam9m10g45ek_nandflash_config		- use nand flash
94		make at91sam9m10g45ek_dataflash_cs0_config	- use data flash (spi cs0)
95
96
97------------------------------------------------------------------------------
98AT91SAM9RLEK
99------------------------------------------------------------------------------
100
101Memory map
102	0x20000000 - 23FFFFFF	SDRAM (64 MB)
103	0xC0000000 - Cxxxxxxx	Soldered Atmel Dataflash
104
105Environment variables
106
107	U-Boot environment variables can be stored at different places:
108		- Dataflash on SPI chip select 0
109		- Nand flash.
110
111	You can choose your storage location at config step (here for at91sam9260ek) :
112		make at91sam9263ek_config		- use data flash (spi cs0) (default)
113		make at91sam9263ek_nandflash_config	- use nand flash
114		make at91sam9263ek_dataflash_cs0_config	- use data flash (spi cs0)
115
116II. Watchdog support
117
118	For security reasons, the at91 watchdog is running at boot time and,
119	if deactivated, cannot be used anymore.
120	If you want to use the watchdog, you will need to keep it running in
121	your code (make sure not to disable it in AT91Bootstrap for instance).
122
123	In the U-Boot configuration, the AT91 watchdog support is enabled using
124	the CONFIG_AT91SAM9_WATCHDOG and CONFIG_HW_WATCHDOG options.
125