From c76f238e261b8d088f086c2e8551fa8402d86f42 Mon Sep 17 00:00:00 2001
From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sat, 4 Apr 2015 21:46:35 +0100
Subject: [PATCH] ARM: proc-v7: sanitise and document registers around errata

Document that r13 is not a stack in the initialisation function, in
case anyone gets other ideas.

Document the registers available for the errata workarounds, and
specifically which registers contain parts of the MIDR register, as
well as which registers must be preserved.

Lastly, use the lowest numbered available register (r0) rather than
r10 for temporary storage.

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