Re: using the 36bit physical address on AMD AU1200

[Dan Malek <dan@embeddedalley.com>]

On Jan 17, 2006, at 2:08 AM, Youngduk Goo wrote:

> After setting, I could access DM9000 with the Base address 0xD0000000.
> In here, I have some more questions.
> 1. I set the 1 TLB entry, so others does not affect the address 
> translation.
>    so Whenever I use the 0xD0000000, it always converted to 0xD 0000 
> 0000
>    on the bootloader.
>    Am I right?
Yes, looks good.

> 2. On the linux, If I want to use ioremap for Dm9000, Do I need to set 
> the TLB
>     and do not need to change the ioremap source code ?
Make sure you have CONFIG_64BIT_PHYS_ADDR configured
and you are using a recent kernel.  No changes to any code and ioremap()
will ensure the TLB is set correctly.  Just use the virtual address
returned from ioremap().


        -- Dan