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authorSascha Hauer <s.hauer@pengutronix.de>2015-10-23 11:06:56 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2015-11-03 07:27:44 +0100
commitb792124a7dd30f03b9ad0e06589b5b58ed930d3b (patch)
tree9811bbbc0b5bb5baade7d32309ced5b3c59046df /arch/nios2
parent6b127d4f189c03f4417f6185de1aeb55b1706f94 (diff)
downloadbarebox-b792124a7dd30f03b9ad0e06589b5b58ed930d3b.tar.gz
rework remap_range
remap_range is for remapping regions with different cache attributes. It is implemented for ARM and PowerPC only, the other architectures only provide stubs. Currently the new cache attributes are passed in an architecture specific way and the attributes have to be retrieved by calls to mmu_get_pte_cached_flags() and mmu_get_pte_uncached_flags(). Make this simpler by providing architecture independent flags which can be directly passed to remap_range() Also provide a MAP_ARCH_DEFAULT flag and a arch_can_remap() function. The MAP_ARCH_DEFAULT defaults to whatever caching type the architecture has as default. the arch_can_remap() function returns true if the architecture can change the cache attributes, false otherwise. This allows the memtest code to better find out what it has to do. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/nios2')
-rw-r--r--arch/nios2/include/asm/mmu.h14
1 files changed, 1 insertions, 13 deletions
diff --git a/arch/nios2/include/asm/mmu.h b/arch/nios2/include/asm/mmu.h
index bf65420..95af871 100644
--- a/arch/nios2/include/asm/mmu.h
+++ b/arch/nios2/include/asm/mmu.h
@@ -1,18 +1,6 @@
#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;
-}
+#define MAP_ARCH_DEFAULT MAP_UNCACHED
#endif /* __ASM_MMU_H */