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" <[email protected]> 寫道： > On Sat, Sep 13, 2014 at 7:13 PM, Miles MH Chen <[email protected]> > 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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