[XL] Change in coreboot[main]: soc/intel/ptl: Do initial Panther Lake SoC commit till bootblock

[Saurabh Mishra (Code Review)]

Attention is currently required from: Ashish Kumar Mishra, Dinesh Gehlot, Eran Mitrani, Felix Singer, Jakub Czapiga, Jérémy Compostella, Kapil Porwal, Subrata Banik, Tarun.

Saurabh Mishra has posted comments on this change by Saurabh Mishra. ( https://review.coreboot.org/c/coreboot/+/83354?usp=email )

Change subject: soc/intel/ptl: Do initial Panther Lake SoC commit till bootblock
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Patch Set 31:

(1 comment)

File src/soc/intel/pantherlake/Kconfig:

https://review.coreboot.org/c/coreboot/+/83354/comment/6d75fd49_c0c0dd29?usp... :
PS14, Line 67: ~1KiB)
> Hi Subrata, i have checked with FSP Team, as per the MTL FSP Integration guide, the FSP Stack and He […]

The stack allocated by the bootloader must be large enough for both FSP-M as well as any other parent function calls that are still on the stack at the point when FspMemoryInit() is called.
Keeping this, it would be best to have FSP-M stack in CAR larger than 256KB.