Mario Goljak wrote:
I've been following coreboots official guide http://www.coreboot.org/Board:lenovo/x230 but I'm unable to read bios chip content with the buspirate and flashrom. I've connected it according to this datasheet http://www.macronix.com/Lists/DataSheet/Attachments/1740/MX25L3206E,%203V,%2... but I'm not exactly sure how to connect 3.3V power lines from another computer.
Not at all, ideally. Never apply a voltage to a voltage rail without knowing that you are actually following the required power sequence for the system. Sometimes this is documented in the schematic, other times not, then you can't know.
See if you can let the board power the voltage rail. Look for flash chip accesses if you only connect the power but do not power on the system.
Macronix flash is very sensitive to signal integrity. Keep your wires as short as possible, max 2-3 cm.
//Peter