[PATCH 1/2] ARM: use arm_system_rev from environment

[Sascha Hauer]

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 arch/arm/lib/armlinux.c |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/arm/lib/armlinux.c b/arch/arm/lib/armlinux.c
index e3a74f4..f636f12 100644
--- a/arch/arm/lib/armlinux.c
+++ b/arch/arm/lib/armlinux.c
@@ -198,7 +198,14 @@ void armlinux_set_architecture(int architecture)
 
 void armlinux_set_revision(unsigned int rev)
 {
+	char *revstr = asprintf("%d", rev);
+
 	system_rev = rev;
+
+	setenv("arm_system_rev", revstr);
+	export("arm_system_rev");
+
+	kfree(revstr);
 }
 
 void armlinux_set_serial(u64 serial)
@@ -209,6 +216,10 @@ void armlinux_set_serial(u64 serial)
 void start_linux(void *adr, int swap, struct image_data *data)
 {
 	void (*kernel)(int zero, int arch, void *params) = adr;
+	const char *revstr = getenv("arm_system_rev");
+
+	if (revstr)
+		system_rev = simple_strtoul(revstr, NULL, 0);
 
 	setup_tags(data, swap);
 
-- 
1.7.7