[PATCH 2/2] arm: move outercase to cpu.c as some SoC as the ux500 always need to flush the l2x0

Jean-Christophe PLAGNIOL-VILLARD plagnioj at jcrosoft.com
Mon Feb 11 12:01:30 EST 2013


Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
 arch/arm/cpu/cpu.c |   22 ++++++++++++++++++++--
 arch/arm/cpu/mmu.c |   15 ---------------
 arch/arm/cpu/mmu.h |    6 ++++++
 3 files changed, 26 insertions(+), 17 deletions(-)

diff --git a/arch/arm/cpu/cpu.c b/arch/arm/cpu/cpu.c
index 7761f5c..5f697d7 100644
--- a/arch/arm/cpu/cpu.c
+++ b/arch/arm/cpu/cpu.c
@@ -34,6 +34,8 @@
 #include <asm/cache.h>
 #include <asm/ptrace.h>
 
+#include "mmu.h"
+
 /**
  * Enable processor's instruction cache
  */
@@ -67,6 +69,24 @@ int icache_status(void)
 	return (get_cr () & CR_I) != 0;
 }
 
+/*
+ * SoC like the ux500 have the l2x0 always enable
+ * with or without MMU enable
+ */
+struct outer_cache_fns outer_cache;
+
+/*
+ * Clean and invalide caches, disable MMU
+ */
+void mmu_disable(void)
+{
+	if (outer_cache.disable)
+		outer_cache.disable();
+
+	__mmu_cache_flush();
+	__mmu_cache_off();
+}
+
 /**
  * Disable MMU and D-cache, flush caches
  * @return 0 (always)
@@ -78,9 +98,7 @@ void arch_shutdown(void)
 {
 	uint32_t r;
 
-#ifdef CONFIG_MMU
 	mmu_disable();
-#endif
 	flush_icache();
 	/*
 	 * barebox normally does not use interrupts, but some functionalities
diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index 73dd0d3..e065fb0 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -322,21 +322,6 @@ static int mmu_init(void)
 }
 mmu_initcall(mmu_init);
 
-struct outer_cache_fns outer_cache;
-
-/*
- * Clean and invalide caches, disable MMU
- */
-void mmu_disable(void)
-{
-
-	if (outer_cache.disable)
-		outer_cache.disable();
-
-	__mmu_cache_flush();
-	__mmu_cache_off();
-}
-
 void *dma_alloc_coherent(size_t size)
 {
 	void *ret;
diff --git a/arch/arm/cpu/mmu.h b/arch/arm/cpu/mmu.h
index 618968b..79ebc80 100644
--- a/arch/arm/cpu/mmu.h
+++ b/arch/arm/cpu/mmu.h
@@ -1,8 +1,14 @@
 #ifndef __ARM_MMU_H
 #define __ARM_MMU_H
 
+#ifdef CONFIG_MMU
 void __mmu_cache_on(void);
 void __mmu_cache_off(void);
 void __mmu_cache_flush(void);
+#else
+static inline void __mmu_cache_on(void) {}
+static inline void __mmu_cache_off(void) {}
+static inline void __mmu_cache_flush(void) {}
+#endif
 
 #endif /* __ARM_MMU_H */
-- 
1.7.10.4




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