diff options
Diffstat (limited to 'kernel/arch/arm/mach-vexpress/dcscb_setup.S')
| -rw-r--r-- | kernel/arch/arm/mach-vexpress/dcscb_setup.S | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-vexpress/dcscb_setup.S b/kernel/arch/arm/mach-vexpress/dcscb_setup.S new file mode 100644 index 000000000..4bb7fbe0f --- /dev/null +++ b/kernel/arch/arm/mach-vexpress/dcscb_setup.S @@ -0,0 +1,38 @@ +/* + * arch/arm/include/asm/dcscb_setup.S + * + * Created by: Dave Martin, 2012-06-22 + * Copyright: (C) 2012-2013 Linaro Limited + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/linkage.h> + + +ENTRY(dcscb_power_up_setup) + + cmp r0, #0 @ check affinity level + beq 2f + +/* + * Enable cluster-level coherency, in preparation for turning on the MMU. + * The ACTLR SMP bit does not need to be set here, because cpu_resume() + * already restores that. + * + * A15/A7 may not require explicit L2 invalidation on reset, dependent + * on hardware integration decisions. + * For now, this code assumes that L2 is either already invalidated, + * or invalidation is not required. + */ + + b cci_enable_port_for_self + +2: @ Implementation-specific local CPU setup operations should go here, + @ if any. In this case, there is nothing to do. + + bx lr + +ENDPROC(dcscb_power_up_setup) |