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authorRichard Purdie <rpurdie@rpsys.net>2007-02-06 21:29:00 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2007-02-16 14:37:06 +0000
commitc587e4a6a4d808fd2a1c4e7fb2d5a3a31e300d23 (patch)
tree77af76e34786ad795e5df625915fc58bca1a9abc /arch/arm/Kconfig
parent3b581f5485c180016a6c36c4c7007e21c53f8a63 (diff)
downloadop-kernel-dev-c587e4a6a4d808fd2a1c4e7fb2d5a3a31e300d23.zip
op-kernel-dev-c587e4a6a4d808fd2a1c4e7fb2d5a3a31e300d23.tar.gz
[ARM] 4137/1: Add kexec support
Add kexec support to ARM. Improvements like commandline handling could be made but this patch gives basic functional support. It uses the next available syscall number, 347. Once the syscall number is known, userspace support will be finalised/submitted to kexec-tools, various patches already exist. Originally based on a patch by Maxim Syrchin but updated and forward ported by various people. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
-rw-r--r--arch/arm/Kconfig14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6783c2e..a829894 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -738,6 +738,20 @@ config XIP_PHYS_ADDR
be linked for and stored to. This address is dependent on your
own flash usage.
+config KEXEC
+ bool "Kexec system call (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ help
+ kexec is a system call that implements the ability to shutdown your
+ current kernel, and to start another kernel. It is like a reboot
+ but it is indepedent of the system firmware. And like a reboot
+ you can start any kernel with it, not just Linux.
+
+ It is an ongoing process to be certain the hardware in a machine
+ is properly shutdown, so do not be surprised if this code does not
+ initially work for you. It may help to enable device hotplugging
+ support.
+
endmenu
if (ARCH_SA1100 || ARCH_INTEGRATOR || ARCH_OMAP || ARCH_IMX )
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