Blackfin arch: Clean up trace buffer handling, No major functional changes.

Turns on trace earlier, so crashes at kernel start should print out a
trace, making things easier to debug.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/blackfin/mach-bf533/head.S b/arch/blackfin/mach-bf533/head.S
index 7e2aa8d0f44f..7dd0e9c3a936 100644
--- a/arch/blackfin/mach-bf533/head.S
+++ b/arch/blackfin/mach-bf533/head.S
@@ -30,6 +30,7 @@
 #include <linux/linkage.h>
 #include <linux/init.h>
 #include <asm/blackfin.h>
+#include <asm/trace.h>
 #if CONFIG_BFIN_KERNEL_CLOCK
 #include <asm/mach/mem_init.h>
 #endif
@@ -96,6 +97,10 @@ ENTRY(__start)
         M2 = r0;
         M3 = r0;
 
+        trace_buffer_start(p0,r0);
+        P0 = R1;
+        R0 = R1;
+
 #if CONFIG_DEBUG_KERNEL_START
 
 /*