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| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2009-03-27 23:26:42 +0100 |
|---|---|---|
| committer | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2009-04-04 20:42:19 +0200 |
| commit | 843a2654bce74192de2b5a43474fdc27a572ab40 (patch) | |
| tree | 57d05fbf6aed7864552894e1204cb02c862b1d00 /doc | |
| parent | a47492ac60657dd9d59c713aa049319ea6eabd52 (diff) | |
| download | u-boot-imx-843a2654bce74192de2b5a43474fdc27a572ab40.zip u-boot-imx-843a2654bce74192de2b5a43474fdc27a572ab40.tar.gz u-boot-imx-843a2654bce74192de2b5a43474fdc27a572ab40.tar.bz2 | |
at91sam9: add watchdog support
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.at91 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/README.at91 b/doc/README.at91 index e460e66..9b4eae6 100644 --- a/doc/README.at91 +++ b/doc/README.at91 @@ -2,6 +2,7 @@ Atmel AT91 Evaluation kits http://atmel.com/dyn/products/tools.asp?family_id=605#1443 +I. Board mapping & boot media ------------------------------------------------------------------------------ AT91SAM9260EK, AT91SAM9G20EK & AT91SAM9XEEK ------------------------------------------------------------------------------ @@ -86,3 +87,13 @@ Environment variables 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) + +II. 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. |