ARM: 7539/1: kexec: scan for dtb magic in segments

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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>

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Matthew Leach 2012-09-21 18:56:02 +01:00 • committed by Russell King

parent 559a593905

commit 4cabd1d962

1 changed files with 22 additions and 1 deletions

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arch/arm/kernel/machine_kexec.c

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