From daf423db3b6afd90ecdd776dbc32c0b57cc78edb Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Wed, 30 Jul 2008 10:29:39 +1000 Subject: [PATCH] kdump: sh: parse elfcorehdr command line argument A quick cut and paste from other architectures to allow SH to parse the elfcorehdr command line argument which is required for both is_kdump_kernel() and vmcore to function. (the former is as yet unused on SH). Tested compilation only Signed-off-by: Simon Horman Signed-off-by: Paul Mundt --- arch/sh/kernel/setup.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/sh/kernel/setup.c b/arch/sh/kernel/setup.c index 6339d0c95715..a35207655e7b 100644 --- a/arch/sh/kernel/setup.c +++ b/arch/sh/kernel/setup.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -286,6 +287,25 @@ static void __init setup_memory(void) extern void __init setup_memory(void); #endif +/* + * Note: elfcorehdr_addr is not just limited to vmcore. It is also used by + * is_kdump_kernel() to determine if we are booting after a panic. Hence + * ifdef it under CONFIG_CRASH_DUMP and not CONFIG_PROC_VMCORE. + */ +#ifdef CONFIG_CRASH_DUMP +/* elfcorehdr= specifies the location of elf core header + * stored by the crashed kernel. + */ +static int __init parse_elfcorehdr(char *arg) +{ + if (!arg) + return -EINVAL; + elfcorehdr_addr = memparse(arg, &arg); + return 0; +} +early_param("elfcorehdr", parse_elfcorehdr); +#endif + void __init setup_arch(char **cmdline_p) { enable_mmu(); -- 2.39.5