armv7: add function for dcache_clean_by_mva()

This adds a function for using the DCCMVAC instruction (dcache clean
by MVA at point of coherency (main memory)). We already have the
inline defined, it's just not used by anything.

Change-Id: Ia0641566a8881335bed8da2963e1db8321d74267
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: http://review.coreboot.org/2871
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)

2 files changed, 9 insertions, 0 deletions

diff --git a/src/arch/armv7/include/arch/cache.h b/src/arch/armv7/include/arch/cache.h
index 31ed34579a..c00325629a 100644
--- a/src/arch/armv7/include/arch/cache.h
+++ b/src/arch/armv7/include/arch/cache.h
@@ -215,6 +215,9 @@ static inline void write_sctlr(unsigned int val)
 /* dcache clean and invalidate all (on current level given by CCSELR) */
 void dcache_clean_invalidate_all(void);
 
+/* dcache clean by modified virtual address to PoC */
+void dcache_clean_by_mva(unsigned long addr, unsigned long len);
+
 /* dcache clean and invalidate by modified virtual address to PoC */
 void dcache_clean_invalidate_by_mva(unsigned long addr, unsigned long len);
 
diff --git a/src/arch/armv7/lib/cache.c b/src/arch/armv7/lib/cache.c
index 8fb238af9b..63e406c03f 100644
--- a/src/arch/armv7/lib/cache.c
+++ b/src/arch/armv7/lib/cache.c
@@ -79,6 +79,7 @@ enum dcache_op {
 	OP_DCCISW,
 	OP_DCISW,
 	OP_DCCIMVAC,
+	OP_DCCMVAC,
 };
 
 /*
@@ -193,6 +194,11 @@ static void dcache_op_mva(unsigned long addr,
 	}
 }
 
+void dcache_clean_by_mva(unsigned long addr, unsigned long len)
+{
+	dcache_op_mva(addr, len, OP_DCCMVAC);
+}
+
 void dcache_clean_invalidate_by_mva(unsigned long addr, unsigned long len)
 {
 	dcache_op_mva(addr, len, OP_DCCIMVAC);