sh: kdump support.

This adds support for kexec based crash dumps.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index 0b465d622cfc..dfdfaae6772f 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -551,6 +551,20 @@ config KEXEC
           support.  As of this writing the exact hardware interface is
           strongly in flux, so no good recommendation can be made.
 
+config CRASH_DUMP
+        bool "kernel crash dumps (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        help
+          Generate crash dump after being started by kexec.
+          This should be normally only set in special crash dump kernels
+          which are loaded in the main kernel with kexec-tools into
+          a specially reserved region and then later executed after
+          a crash by kdump/kexec. The crash dump kernel must be compiled
+          to a memory address not used by the main kernel using
+          MEMORY_START.
+
+          For more details see Documentation/kdump/kdump.txt
+
 config SMP
         bool "Symmetric multi-processing support"
         ---help---