ARM: shmobile: Force ARM mode to compile reset vector for secondary CPUs

Instructions start from boot vector must be ARM mode.
This patch specify ARM mode explicitly and use 'bx' instruction to be
able to change to Thumb mode.

Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/mach-shmobile/headsmp.S b/arch/arm/mach-shmobile/headsmp.S
index 559d1ce..afed58e 100644 (file)
--- a/arch/arm/mach-shmobile/headsmp.S
+++ b/arch/arm/mach-shmobile/headsmp.S
@@ -26,10 +26,13 @@ ENDPROC(shmobile_invalidate_start)
  * This will be mapped at address 0 by SBAR register.
  * We need _long_ jump to the physical address.
  */
+       .arm
        .align  12
 ENTRY(shmobile_boot_vector)
        ldr     r0, 2f
-       ldr     pc, 1f
+       ldr     r1, 1f
+       bx      r1
+
 ENDPROC(shmobile_boot_vector)
 
        .globl  shmobile_boot_fn