Changeset 3fa509b in mainline for kernel/arch/arm32/src/cpu/cpu.c

Timestamp:

2013-01-19T23:59:25Z (11 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

9eec7bc

Parents:

4b28c70

Message:

arm32, armv7: Add reading of performance cycles counter.

Fix comment about WFE.

File:

• kernel/arch/arm32/src/cpu/cpu.c (modified) (1 diff)

kernel/arch/arm32/src/cpu/cpu.c

@@ -168 +168 @@
         fpu_setup();
 #endif
+
+#ifdef PROCESSOR_ARCH_armv7_a
+        PMCR_write(PMCR_read() | PMCR_E_FLAG);
+        PMCNTENSET_write(PMCNTENSET_CYCLE_COUNTER_EN_FLAG);
+#endif
 }