[coreboot-gerrit] Change in coreboot[master]: soc/intel/common/block/notify: Implement coreboot notify native driver

[Subrata Banik (Code Review)]

Attention is currently required from: Arthur Heymans, Felix Singer, Tim Wawrzynczak, Sridhar Siricilla, Angel Pons, Lean Sheng Tan, Werner Zeh, Patrick Rudolph, EricR Lai.
Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/60405 )

Change subject: soc/intel/common/block/notify: Implement coreboot notify native driver
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Patch Set 21:

(1 comment)

File src/soc/intel/common/block/notify/Kconfig:

https://review.coreboot.org/c/coreboot/+/60405/comment/c6df8001_ec96f4e8 
PS21, Line 8: notification
> nit: notification operations mean?

I need to rephrase this for sure, but just to answer your question.

Notification to certain IPs about
- Time to go to low power mode
- Let me lock your memory range
- Let me hide you from OS if needed etc.

In any bootloader, we typically have two phases
1. Where bootloader initialise a hardware block and ask to perform some operation.
2. Prior loading paylaod/OS, it also decides if we need to perform any housekeeping task for those IP prior to load paylaod/os.

when I have written "notification", I meant the #2 task.