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README.falcon: Document environment variables for falcon mode

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Signed-off-by: Tom Rini <trini@ti.com>
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Tom Rini 2014-03-28 12:03:40 -04:00
parent 9607faf20a
commit 3523df0078
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doc/README.falcon
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@ -80,6 +80,15 @@ spl_start_uboot() : required
Returns "0" if SPL should start the kernel, "1" if U-Boot
must be started.
Environment variables
---------------------
A board may chose to look at the environment for decisions about falcon
mode. In this case the following variables may be supported:
boot_os : Set to yes/Yes/true/True/1 to enable booting to OS,
any other value to fall back to U-Boot (including
unset)
Using spl command
-----------------