Trouble Writting InsydeH2O and Question about potential gotchas

[Sweet_Kitten]

@iqwerg

There seemed to be a handily named “Flash Protection Range Registers (FPRR)”@PchSetup but setting it to 0 did not seem to alleviate the error.

Check this topic.

@Wootever

Got it, the lock is inside BiosRegionLockDxe:

56c:    e8 d7 05 00 00          call   0xb48
571:    0f ba e0 0f             bt     eax,0xf
575:    72 0f                   jb     0x586
577:    ba 00 80 00 00          mov    edx,0x8000
57c:    48                      dec    eax
57d:    8b cb                   mov    ecx,ebx
57f:    e8 74 06 00 00          call   0xbf8
 

The error is not resolvable by variables change.