Kyösti Mälkki has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/42210 )
Change subject: arch/x86/bootblock_ctr0.S: Export bootblock_protected_mode_entry ......................................................................
Patch Set 1:
(1 comment)
https://review.coreboot.org/c/coreboot/+/42210/1/src/arch/x86/bootblock_crt0... File src/arch/x86/bootblock_crt0.S:
https://review.coreboot.org/c/coreboot/+/42210/1/src/arch/x86/bootblock_crt0... PS1, Line 41: bootblock_protected_mode_entry: So.. everything in entry16.inc is skipped. How are IDT and GDT setup?
There is also some bits in cr0 that may be set differently from normal boot path now. Code immediately below needs CR0 EM=0, but that is very likely a power-on default.