[coreboot] Compiling HowTo?

[NOQ2 Webmaster]

Hello,

Are there any more detailed descriptions on how to create a coreboot 
image for let´s say Thinkpad x61 or x230? Most of the online guides out 
there just describe the coreboot flashing procedure itself, not how the 
image was compiled before (especially which settings are of importance, 
how to cope with two eeprom chips in x230 - does it suffice to compile / 
flash a 4M image?). Any help appreciated :-)

noq2