[coreboot-gerrit] Change in coreboot[master]: Kconfig: Fix BOOT_DEVICE_MEMORY_MAPPED

[Arthur Heymans (Code Review)]

Attention is currently required from: Furquan Shaikh, Tim Wawrzynczak, Aaron Durbin.
Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/54302 )

Change subject: Kconfig: Fix BOOT_DEVICE_MEMORY_MAPPED
......................................................................

Patch Set 1:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/54302/comment/979df360_009fb124 
PS1, Line 7: Fix BOOT_DEVICE_MEMORY_MAPPED
           : 
           : Also non SPI x86 is memory mapped.
> A follow up question would be:
>
> What do you consider 'non SPI'? What sort of protocols or boot mediums are being considered? As Furquan mentioned, the intention of the change isn't clear in what the change is trying to achieve.

On some older boards there is LPC flash instead of SPI. Emulation qemu boards also don't have SPI emulated. To answer Furquans question: It looks like it is only used in arch/x86/postcar_loader.c to set up a WP MTRR for the ROM.