Intel made nice video tutorial how to use OpenOCD and our JTAGs with their SoCs! This explains the frequent purchases they do from many Intel locations all around the world of ARM-USB-TINY-H , ARM-USB-OCD-H and ARM-JTAG-20-10.
Searching bit more there is application note How to setup ARM-USB-OCD-H with Intel Quark SoC X1000 and tutorials about Low-cost UEFI debugging options for Intel and How to debug Linux Kernel on Intel Quark
olimex 
Jun 07, 2016 @ 09:51:54
No link to the video?
Jun 07, 2016 @ 09:52:44
click on the picture? 😉
Jun 07, 2016 @ 22:43:37
I think this chip has still the famous pentium bug from 20 years ago:
https://en.m.wikipedia.org/wiki/Intel_Quark#Segfault_bug
Jun 16, 2016 @ 20:50:30
Debugging UEFI? Sounds really scary, that’s why I strongly prefer ARM with just U-boot. Much easier, with no overengineered, MS-inclined Wintel cruft attached. Uhm, lol, UEFI uses MS-DOS (!!!) compatibility headers in EXE images. LOL, DOS can’t even boot under UEFI but they never clean up their dark corners.
Jun 17, 2016 @ 08:02:46
indeed when people say x86 they think this is one architecture, in fact they are many and the backward compatibility is huge burden.