[U-Boot] [PATCH v5 1/5] mips: implement to access the KSEG0/1 memory range in map_physmem

[Wills Wang]

U-boot just use the no MMU virtual address segment(KSEG0/1), this
patch enable access the uncached memory range(KSEG1) by flag
"MAP_NOCACHE", other flag for KSEG0 access.

Signed-off-by: Wills Wang <wills.wang at live.com>
---

Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None

 arch/mips/include/asm/io.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index a7ab087..943053d 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -485,7 +485,7 @@ static inline void sync(void)
  * that can be used to access the memory range with the caching
  * properties specified by "flags".
  */
-#define MAP_NOCACHE	(0)
+#define MAP_NOCACHE	(1)
 #define MAP_WRCOMBINE	(0)
 #define MAP_WRBACK	(0)
 #define MAP_WRTHROUGH	(0)
@@ -493,7 +493,10 @@ static inline void sync(void)
 static inline void *
 map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
 {
-	return (void *)paddr;
+	if (flags)
+		return (void *)KSEG1ADDR(paddr);
+	else
+		return (void *)KSEG0ADDR(paddr);
 }
 
 /*
-- 
1.9.1