Youness Alaoui has posted comments on this change. ( https://review.coreboot.org/19849 )
Change subject: console/flashsconsole: Add spi flash console for debugging ......................................................................
Patch Set 10:
I've updated the commit so it now generates the CONSOLE FMAP area automatically (and no area if the option is disabled). I also simplified the use of the tx_flush and removed the CBFS support.
I've just tried to test flashconsole on broadwell and it doesn't compile (the lack of monotonic_clock in romstage, and all the global vars in the spi drivers), so I don't know if I should leave it like that, or make the option depend on the FAST_SPI driver (which means skylake+ and no other archs) or if you have a better suggestion, let me know.