From 70839d207792aa348f013c733e8853c1bd3bc4f0 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Fri, 14 Oct 2016 18:31:33 +1100 Subject: powerpc/64: Add an option to force run-at-load to test relocation This adds a config option that can help exercise the case when the kernel is not running at PAGE_OFFSET. Signed-off-by: Nicholas Piggin Reviewed-by: Balbir Singh Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/head_64.S | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/kernel') diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index 04c546e20cc0..451a8e1cf57b 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -107,12 +107,19 @@ __secondary_hold_acknowledge: * crash_kernel region. The loader is responsible for * observing the alignment requirement. */ + +#ifdef CONFIG_RELOCATABLE_TEST +#define RUN_AT_LOAD_DEFAULT 1 /* Test relocation, do not copy to 0 */ +#else +#define RUN_AT_LOAD_DEFAULT 0x72756e30 /* "run0" -- relocate to 0 by default */ +#endif + /* Do not move this variable as kexec-tools knows about it. */ . = 0x5c .globl __run_at_load __run_at_load: DEFINE_FIXED_SYMBOL(__run_at_load) - .long 0x72756e30 /* "run0" -- relocate to 0 by default */ + .long RUN_AT_LOAD_DEFAULT #endif . = 0x60 -- cgit v1.2.3