[coreboot-gerrit] Patch set updated for coreboot: 89d4ac9 armv7: Allow accessing ACTLR (Auxiliary Control Register)

Patrick Georgi (patrick@georgi-clan.de) gerrit at coreboot.org
Sat Dec 21 18:49:52 CET 2013


Patrick Georgi (patrick at georgi-clan.de) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4447

-gerrit

commit 89d4ac94195a414b219ce064739d9e9a277d4f87
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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