[coreboot] VIA CN700 / VT8237R support in V4 broken?

[Peter Stuge]

Christian wrote:
> I currently working on a Igel Thin Client 3210.
> The board is very closer to bcom/winnetp680.
> CN700 northbridge
> VT8237R southbridge
> W83679HF SuperIO
> A try with this tree did not work.

What CPU do you have? Is CN700 usable exclusively with C7? What
generation C7 do you have? Does VIA have updated setup code for
your model CPU?


> I have compiled nearly all via boards to test the ROMs with qemu.
> And get always this message:
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> qemu: fatal: Trying to execute code outside RAM or ROM at 0x000a0000
> 
> EAX=00000004 EBX=00000000 ECX=00000000 EDX=00000001
> ESI=00000000 EDI=00000000 EBP=ffef7fe8 ESP=ffef7fb8
> EIP=0009ff66

So code at 9ff66 is trying to jump to a0000. This is all sorts of
wrong. Start by looking at what is going on at 9ff66. Obviously make
sure that your toolchain is working. I believe VIA startup has some
assembly. Verify that your disassembled binaries have 1:1 of the
source. All basic bringup.


> Is anybody working on a cn700 board for now.

No, I don't think anyone is.


> There are hints for Rev. 3566 code for the southbridge? Is this
> important.

A more precise reference to the code you have in mind would allow
more efficient collaboration.


Thanks.

//Peter