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 --- arch/nios2/include/asm/io.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h index d0adf08..fdfc14e 100644 --- a/arch/nios2/include/asm/io.h +++ b/arch/nios2/include/asm/io.h @@ -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)