ARM: 7539/1: kexec: scan for dtb magic in segments
authorMatthew Leach <matthew.leach@arm.com>
Fri, 21 Sep 2012 17:56:02 +0000 (18:56 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Wed, 26 Sep 2012 21:58:36 +0000 (22:58 +0100)
commit4cabd1d9625c7d88acd143f4021fbef75394f154
tree3c232277c6bd94c7c4f17714de2104652735bdfb
parent559a593905e583fca23229b916c016e5211c6766
ARM: 7539/1: kexec: scan for dtb magic in segments

This patch allows a dtb to be passed to a new kernel using the kexec
mechinism.

When loading segments from userspace, scan each segment's first four
bytes for the dtb magic. If this is found set the kexec_boot_atags
parameter to the relocate_kernel code to the phyical address of this
segment.

Reviewed-by: Simon Horman <horms@verge.net.au>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Matthew Leach <matthew.leach@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/kernel/machine_kexec.c