You can probably set the DCI enable bit in the PCH softstraps in the
descriptor, no need to mess with the BIOS editing. It seems to be bit 17
in strap 0, right next to the HAP bit:

<LayoutEntry name="PchStrapDciEnabled" type="bitfield32" value="0x1" offset="0x0" bitfield_high="17" bitfield_low="17" />
<LayoutEntry name="reserve_hap" type="bitfield32" value="0x0" offset="0x0" bitfield_high="16" bitfield_low="16" />

(xml from the Intel Flash Image Tool).

Interesting. Where can I read about this xml definition of the

softstrap. Which tool can I use to modify the PCH softstrap

section? Do I need to Intel Flash Image Tool for that, and where can

I download that one? I guess there are crcs and I cannot

just poke around?

I wonder weather DCI is left enabled when the BIOS start

initializing and probably I also need a softstrap bit for the

Debug Interface enable if I want to connect with DAL later?

Why is this stuff so complicated?