ok, now we can say the virt_to_phys returns a correct physical address.
0x32d01fe0. It is a physical address, not a simple offset in dram. Your 64Mb dram has physical address within 0x30000000 ~ 0x34000000.
MH
2014/9/13 下午9:52 於 "mind entropy" <mindentropy@xxxxxxxxx> 寫道：
On Sat, Sep 13, 2014 at 7:13 PM, Miles MH Chen <orca.chen@xxxxxxxxx> wrote:
> Kernel physical addr : 0x32d01fe0
> Platform phys offset : 0x30000000
> Page offset : 0xc0553fb4
>
> The page offset looks weird, since 32bit kernel has 2/2 or 3/1 or 1/3
> user/kernel virtual address split. It is not reasonable to have 0xc0553fb4
> as page offset. You should c0000000 for 3/1 split.
>
My fault. I had done "0x%llx" in printk. Now I just did a %x and it
shows as 0xc0000000.
-Gautam.
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