[PATCH 1/2] MIPS: kexec: Provide bootloader arguments by default

[Florian Fainelli <f.fainelli@gmail.com>]

In case we do not implement a _machine_kexec_shutdown callback to do
platform specific kexec shutdown operations, the most sensible thing to
do is to provide the kexec'd kernel with the same arguments we initially
booted with.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 arch/mips/kernel/machine_kexec.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/mips/kernel/machine_kexec.c b/arch/mips/kernel/machine_kexec.c
index 8b574bcd39ba..8c5bbf302ab1 100644
--- a/arch/mips/kernel/machine_kexec.c
+++ b/arch/mips/kernel/machine_kexec.c
@@ -11,6 +11,7 @@
 #include <linux/delay.h>
 
 #include <asm/cacheflush.h>
+#include <asm/bootinfo.h>
 #include <asm/page.h>
 
 extern const unsigned char relocate_new_kernel[];
@@ -66,8 +67,14 @@ machine_kexec_cleanup(struct kimage *kimage)
 void
 machine_shutdown(void)
 {
-	if (_machine_kexec_shutdown)
+	if (_machine_kexec_shutdown) {
 		_machine_kexec_shutdown();
+	} else {
+		kexec_args[0] = fw_arg0;
+		kexec_args[1] = fw_arg1;
+		kexec_args[2] = fw_arg2;
+		kexec_args[3] = fw_arg3;
+	}
 }
 
 void
-- 
2.9.3