[coreboot-gerrit] New patch to review for coreboot: 6dc780e armv7: Allow accessing ACTLR (Auxiliary Control Register)

Stefan Reinauer (stefan.reinauer@coreboot.org) gerrit at coreboot.org
Tue Dec 3 23:56:45 CET 2013


Stefan Reinauer (stefan.reinauer at coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4447

-gerrit

commit 6dc780e61388193a56596e1a48a8ddbcf9306f3d
Author: Hung-Te Lin <hungte at chromium.org>
Date:   Thu Aug 8 11:07:40 2013 +0800

    armv7: Allow accessing ACTLR (Auxiliary Control Register)
    
    The ACTLR provides implementation defined configuration and control options for
    the processor.
    
    Change-Id: I74df1ed7887eb3f16a1b8297db998ec2f8b18311
    Signed-off-by: Hung-Te Lin <hungte at chromium.org>
    Reviewed-on: https://gerrit.chromium.org/gerrit/65107
    Commit-Queue: Gabe Black <gabeblack at chromium.org>
---
 src/arch/armv7/include/arch/cpu.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/arch/armv7/include/arch/cpu.h b/src/arch/armv7/include/arch/cpu.h
index efd2dc9..2613025 100644
--- a/src/arch/armv7/include/arch/cpu.h
+++ b/src/arch/armv7/include/arch/cpu.h
@@ -66,6 +66,20 @@ inline static uint32_t read_mpidr(void)
 	return value;
 }
 
+/* read Auxiliary Control Register (ACTLR) */
+inline static uint32_t read_actlr(void)
+{
+	uint32_t val = 0;
+	asm volatile ("mrc p15, 0, %0, c1, c0, 1" : "=r"(val));
+	return val;
+}
+
+/* write Auxiliary Control Register (ACTLR) */
+inline static void write_actlr(uint32_t val)
+{
+	asm volatile ("mcr p15, 0, %0, c1, c0, 1" : : "r" (val));
+}
+
 /* wait for interrupt. */
 inline static void wfi(void)
 {



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