powerpc: Support for relocatable kdump kernel

[linux-2.6-omap-h63xx.git] / arch / powerpc / Kconfig

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index bbe149c2651805c7835d238a38e7bc04ff940620..5b1527883fcb590b361fcda998164a59f4a33e4a 100644 (file)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -19,6 +19,9 @@ config WORD_SIZE
        default 64 if PPC64
        default 32 if !PPC64
 
+config ARCH_PHYS_ADDR_T_64BIT
+       def_bool PPC64 || PHYS_64BIT
+
 config MMU
        bool
        default y
@@ -224,6 +227,8 @@ config PPC_OF_PLATFORM_PCI
 
 source "init/Kconfig"
 
+source "kernel/Kconfig.freezer"
+
 source "arch/powerpc/sysdev/Kconfig"
 source "arch/powerpc/platforms/Kconfig"
 
@@ -318,13 +323,11 @@ config KEXEC
 
 config CRASH_DUMP
        bool "Build a kdump crash kernel"
-       depends on PPC_MULTIPLATFORM && PPC64
+       depends on PPC_MULTIPLATFORM && PPC64 && RELOCATABLE
        help
          Build a kernel suitable for use as a kdump capture kernel.
-         The kernel will be linked at a different address than normal, and
-         so can only be used for Kdump.
-
-         Don't change this unless you know what you are doing.
+         The same kernel binary can be used as production kernel and dump
+         capture kernel.
 
 config PHYP_DUMP
        bool "Hypervisor-assisted dump (EXPERIMENTAL)"
@@ -824,11 +827,9 @@ config PAGE_OFFSET
        default "0xc000000000000000"
 config KERNEL_START
        hex
-       default "0xc000000002000000" if CRASH_DUMP
        default "0xc000000000000000"
 config PHYSICAL_START
        hex
-       default "0x02000000" if CRASH_DUMP
        default "0x00000000"
 endif