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nios2: fix map_physmem to do real cache mapping

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Fix the map_physmem() to do real cache mapping.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Thomas Chou
2015-10-27 08:30:22 +08:00
parent ed02c532be
commit 1ce61cbbe7
3 changed files with 9 additions and 3 deletions
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1
arch/nios2/include/asm/global_data.h
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@@ -18,6 +18,7 @@ struct arch_global_data {
int has_initda;
int has_mmu;
u32 io_region_base;
u32 mem_region_base;
};
#include <asm-generic/global_data.h>

8
arch/nios2/include/asm/io.h
View File

@@ -18,7 +18,7 @@ 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)
@@ -26,7 +26,11 @@ static inline void sync(void)
static inline void *
map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
{
return (void *)paddr;
DECLARE_GLOBAL_DATA_PTR;
if (flags)
return (void *)(paddr | gd->arch.io_region_base);
else
return (void *)(paddr | gd->arch.mem_region_base);
}
/*