From 10cb54de2c97847cd5b6b2df4e8b359e65266181 Mon Sep 17 00:00:00 2001 From: Greg Ungerer <gerg@uclinux.org> Date: Wed, 23 Nov 2011 14:46:36 +1000 Subject: [PATCH] m68knommu: hard set the ColdFire MBAR register on startup The ColdFire MBAR register that holds the mapping of the peripheral region on some ColdFire CPUs is configurable. It can be configured at some address different to that of the bootloader that loaded the kernel. So hard set the MBAR register mapping at kernel startup time. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Greg Ungerer <gerg@uclinux.org> --- arch/m68k/platform/coldfire/head.S | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/m68k/platform/coldfire/head.S b/arch/m68k/platform/coldfire/head.S index 38f04a3f6207..c3db70ed33b3 100644 --- a/arch/m68k/platform/coldfire/head.S +++ b/arch/m68k/platform/coldfire/head.S @@ -158,6 +158,10 @@ _start: #if defined(CONFIG_UBOOT) movel %sp,_init_sp /* save initial stack pointer */ #endif +#ifdef CONFIG_MBAR + movel #CONFIG_MBAR+1,%d0 /* configured MBAR address */ + movec %d0,%MBAR /* set it */ +#endif /* * Do any platform or board specific setup now. Most boards -- 2.30.9