remap_range: make function 'remap_range' global

Change function remap_range in arm architecture to make it
global accessable. For example command 'memtest' can change
pte flags to enable or disable cache.

Add dummy function for others architectures that doesn't
have mmu or pte support.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/cpu/mmu.c

@@ -52,11 +52,25 @@ extern int arm_architecture;
 #define PTE_FLAGS_CACHED_V4 (PTE_SMALL_AP_UNO_SRW | PTE_BUFFERABLE | PTE_CACHEABLE)
 #define PTE_FLAGS_UNCACHED_V4 PTE_SMALL_AP_UNO_SRW
 
+/*
+ * PTE flags to set cached and uncached areas.
+ * This will be determined at runtime.
+ */
 static uint32_t PTE_FLAGS_CACHED;
 static uint32_t PTE_FLAGS_UNCACHED;
 
 #define PTE_MASK ((1 << 12) - 1)
 
+uint32_t mmu_get_pte_cached_flags()
+{
+	return PTE_FLAGS_CACHED;
+}
+
+uint32_t mmu_get_pte_uncached_flags()
+{
+	return PTE_FLAGS_UNCACHED;
+}
+
 /*
  * Create a second level translation table for the given virtual address.
  * We initially create a flat uncached mapping on it.
@@ -93,7 +107,7 @@ static u32 *find_pte(unsigned long adr)
 	return &table[(adr >> PAGE_SHIFT) & 0xff];
 }
 
-static void remap_range(void *_start, size_t size, uint32_t flags)
+void remap_range(void *_start, size_t size, uint32_t flags)
 {
 	unsigned long start = (unsigned long)_start;
 	u32 *p;

arch/arm/include/asm/mmu.h

@@ -41,7 +41,10 @@ void dma_flush_range(unsigned long, unsigned long);
 void dma_inv_range(unsigned long, unsigned long);
 unsigned long virt_to_phys(void *virt);
 void *phys_to_virt(unsigned long phys);
+void remap_range(void *_start, size_t size, uint32_t flags);
 void *map_io_sections(unsigned long physaddr, void *start, size_t size);
+uint32_t mmu_get_pte_cached_flags(void);
+uint32_t mmu_get_pte_uncached_flags(void);
 
 #else
 static inline void *dma_alloc_coherent(size_t size)
@@ -76,11 +79,25 @@ static inline void dma_inv_range(unsigned long s, unsigned long e)
 {
 }
 
+static inline void remap_range(void *_start, size_t size, uint32_t flags)
+{
+}
+
 static inline void *map_io_sections(unsigned long phys, void *start, size_t size)
 {
 	return (void *)phys;
 }
 
+static inline uint32_t mmu_get_pte_cached_flags(void)
+{
+	return 0;
+}
+
+static inline uint32_t mmu_get_pte_uncached_flags(void)
+{
+	return 0;
+}
+
 #endif
 
 #ifdef CONFIG_CACHE_L2X0

arch/blackfin/include/asm/mmu.h

@@ -0,0 +1,18 @@
+#ifndef __ASM_MMU_H
+#define __ASM_MMU_H
+
+static inline void remap_range(void *_start, size_t size, uint32_t flags)
+{
+}
+
+static inline uint32_t mmu_get_pte_cached_flags(void)
+{
+	return 0;
+}
+
+static inline uint32_t mmu_get_pte_uncached_flags(void)
+{
+	return 0;
+}
+
+#endif /* __ASM_MMU_H */

arch/mips/include/asm/mmu.h

@@ -0,0 +1,18 @@
+#ifndef __ASM_MMU_H
+#define __ASM_MMU_H
+
+static inline void remap_range(void *_start, size_t size, uint32_t flags)
+{
+}
+
+static inline uint32_t mmu_get_pte_cached_flags(void)
+{
+	return 0;
+}
+
+static inline uint32_t mmu_get_pte_uncached_flags(void)
+{
+	return 0;
+}
+
+#endif /* __ASM_MMU_H */

arch/nios2/include/asm/mmu.h

@@ -0,0 +1,18 @@
+#ifndef __ASM_MMU_H
+#define __ASM_MMU_H
+
+static inline void remap_range(void *_start, size_t size, uint32_t flags)
+{
+}
+
+static inline uint32_t mmu_get_pte_cached_flags(void)
+{
+	return 0;
+}
+
+static inline uint32_t mmu_get_pte_uncached_flags(void)
+{
+	return 0;
+}
+
+#endif /* __ASM_MMU_H */

arch/openrisc/include/asm/mmu.h

@@ -0,0 +1,18 @@
+#ifndef __ASM_MMU_H
+#define __ASM_MMU_H
+
+static inline void remap_range(void *_start, size_t size, uint32_t flags)
+{
+}
+
+static inline uint32_t mmu_get_pte_cached_flags(void)
+{
+	return 0;
+}
+
+static inline uint32_t mmu_get_pte_uncached_flags(void)
+{
+	return 0;
+}
+
+#endif /* __ASM_MMU_H */

arch/ppc/include/asm/mmu.h

@@ -540,4 +540,22 @@ extern int write_bat(ppc_bat_t bat, unsigned long upper, unsigned long lower);
 					(rt<<21)|(ra<<16)|(ws<<11)|(946<<1)
 
 #endif
+
+#ifndef __ASSEMBLY__
+
+static inline void remap_range(void *_start, size_t size, uint32_t flags)
+{
+}
+
+static inline uint32_t mmu_get_pte_cached_flags(void)
+{
+	return 0;
+}
+
+static inline uint32_t mmu_get_pte_uncached_flags(void)
+{
+	return 0;
+}
+#endif
+
 #endif /* _PPC_MMU_H_ */

arch/sandbox/include/asm/mmu.h

@@ -0,0 +1,18 @@
+#ifndef __ASM_MMU_H
+#define __ASM_MMU_H
+
+static inline void remap_range(void *_start, size_t size, uint32_t flags)
+{
+}
+
+static inline uint32_t mmu_get_pte_cached_flags(void)
+{
+	return 0;
+}
+
+static inline uint32_t mmu_get_pte_uncached_flags(void)
+{
+	return 0;
+}
+
+#endif /* __ASM_MMU_H */

arch/x86/include/asm/mmu.h

@@ -0,0 +1,18 @@
+#ifndef __ASM_MMU_H
+#define __ASM_MMU_H
+
+static inline void remap_range(void *_start, size_t size, uint32_t flags)
+{
+}
+
+static inline uint32_t mmu_get_pte_cached_flags(void)
+{
+	return 0;
+}
+
+static inline uint32_t mmu_get_pte_uncached_flags(void)
+{
+	return 0;
+}
+
+#endif /* __ASM_MMU_H */