On Wed, Oct 21, 2015 at 9:10 PM, Thomas Chou <tho...@wytron.com.tw> wrote:
> 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 <tho...@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;
> }
Reviewed-by: Ley Foon Tan <lf...@altera.com>
Regards
Ley Foon
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