From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sun, 16 Mar 2014 17:38:08 +0000 (+0000)
Subject: ARM: l2c: provide generic hook to intercept writes to secure registers
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~91^2~13^2~1^3~56
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8abd259f657d5742f96ffd46ed65feb11c44b1fb;p=pandora-kernel.git

ARM: l2c: provide generic hook to intercept writes to secure registers

When Linux is running in the non-secure world, any write to a secure
L2C register will generate an abort.  Platforms normally have to call
firmware to work around this.  Provide a hook for them to intercept
any L2C secure register write.

l2c_write_sec() avoids writes to secure registers which are already set
to the appropriate value, thus avoiding the overhead of needlessly
calling into the secure monitor.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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