Blackfin arch: Print out debug info, as early as possible

Print out debug info, as early as possible - even before the
kernel initializes the interrupt vectors. Now we can print out debug
messages almost anytime during the boot process.

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

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/blackfin/mach-bf548/head.S b/arch/blackfin/mach-bf548/head.S
index 532ed0930b5e..3071c243d426 100644
--- a/arch/blackfin/mach-bf548/head.S
+++ b/arch/blackfin/mach-bf548/head.S
@@ -125,6 +125,12 @@ ENTRY(__stext)
         FP = SP;
         USP = SP;
 
+#ifdef CONFIG_EARLY_PRINTK
+        SP += -12;
+        call _init_early_exception_vectors;
+        SP += 12;
+#endif
+
         /* Put The Code for PLL Programming and SDRAM Programming in L1 ISRAM */
         call _bf53x_relocate_l1_mem;
 #if CONFIG_BFIN_KERNEL_CLOCK