| Message ID | 1373421397-1786-3-git-send-email-koba@kmckk.co.jp (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Jul 10, 2013 at 10:56:36AM +0900, Tetsuyuki Kobayashi wrote: > 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> > --- > arch/arm/mach-shmobile/headsmp.S | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) Thanks, I have queued this up with Magnus's ack in the thumb-fixes branch of my renesas tree on kernel.org. It should be included in the renesas-next-20130710v2 tag.
Thank you, Simon-san. I will post the backport patch to next LTSI kernel. (2013/07/10 22:20), Simon Horman wrote: > On Wed, Jul 10, 2013 at 10:56:36AM +0900, Tetsuyuki Kobayashi wrote: >> 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> >> --- >> arch/arm/mach-shmobile/headsmp.S | 5 ++++- >> 1 file changed, 4 insertions(+), 1 deletion(-) > > Thanks, I have queued this up with Magnus's ack in the thumb-fixes > branch of my renesas tree on kernel.org. It should be > included in the renesas-next-20130710v2 tag. >
diff --git a/arch/arm/mach-shmobile/headsmp.S b/arch/arm/mach-shmobile/headsmp.S index 559d1ce..afed58e 100644 --- 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
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> --- arch/arm/mach-shmobile/headsmp.S | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)