config SOC_INTEL_COMMON_BASECODE_RAMTOP bool default n help Driver code to store the top_of_ram (RAMTOP) address into non-volatile space (CMOS) during the first boot and use it across all consecutive boot. Purpose of this driver code is to cache the RAMTOP (with a fixed size) for all consecutive boots even before calling into the FSP. Otherwise, this range remains un-cached until postcar boot stage updates the MTRR programming. FSP-M and late romstage uses this uncached RAMTOP range for various purposes and having the ability to cache this range beforehand would help to optimize the boot time (more than 50ms).