[rtems commit] D-cache clean&&invalidate for Tiny6410
Sebastian Huber
sebh at rtems.org
Wed Apr 17 14:33:31 UTC 2013
Module: rtems
Branch: master
Commit: 76de8a8e6b3fb2f1e4f66a477a2d18e38edd595d
Changeset: http://git.rtems.org/rtems/commit/?id=76de8a8e6b3fb2f1e4f66a477a2d18e38edd595d
Author: Peng Fan <van.freenix at gmail.com>
Date: Wed Apr 17 20:54:05 2013 +0800
D-cache clean&&invalidate for Tiny6410
---
c/src/lib/libcpu/arm/shared/include/arm-cp15.h | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/c/src/lib/libcpu/arm/shared/include/arm-cp15.h b/c/src/lib/libcpu/arm/shared/include/arm-cp15.h
index 3edc83f..017c0e3 100644
--- a/c/src/lib/libcpu/arm/shared/include/arm-cp15.h
+++ b/c/src/lib/libcpu/arm/shared/include/arm-cp15.h
@@ -609,6 +609,27 @@ static inline void arm_cp15_data_cache_test_and_clean(void)
);
}
+/* In DDI0301H_arm1176jzfs_r0p7_trm
+ * 'MCR p15, 0, <Rd>, c7, c14, 0' means
+ * Clean and Invalidate Entire Data Cache
+ */
+static inline void arm_cp15_data_cache_clean_and_invalidate(void)
+{
+ ARM_SWITCH_REGISTERS;
+
+ uint32_t sbz = 0;
+
+ __asm__ volatile (
+ ARM_SWITCH_TO_ARM
+ "mcr p15, 0, %[sbz], c7, c14, 0\n"
+ ARM_SWITCH_BACK
+ : ARM_SWITCH_OUTPUT
+ : [sbz] "r" (sbz)
+ : "memory"
+ );
+
+}
+
static inline void arm_cp15_data_cache_clean_and_invalidate_line(const void *mva)
{
ARM_SWITCH_REGISTERS;
More information about the vc
mailing list