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nios2: fix virt_to_phys for nios2 with MMU 

As the virtual address and physical address mapping of nios2 with
MMU are different. Add a check of MMU, and fix the mapping.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Ley Foon Tan <lftan@altera.com>
utp
Thomas Chou 2015-10-22 15:38:24 +08:00
parent 485e2d8edd
commit 8a3ea97966
1 changed files with 5 additions and 1 deletions
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6
arch/nios2/include/asm/io.h
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@ -39,7 +39,11 @@ static inline void unmap_physmem(void *vaddr, unsigned long flags)
static inline phys_addr_t virt_to_phys(void * vaddr)
{
return (phys_addr_t)(vaddr);
DECLARE_GLOBAL_DATA_PTR;
if (gd->arch.has_mmu)
return (phys_addr_t)vaddr & 0x1fffffff;
else
return (phys_addr_t)vaddr & 0x7fffffff;
}
static inline void *ioremap(unsigned long physaddr, unsigned long size)