[coreboot] Cannot flash the BIOS with FPT utilities under Elkhart Lake platform

[Steve Chen]

I tried to update the BIOS through FPT utilities.
FPT.exe -F coreboot.rom
I got the error message
Error 167, protected Range register are set by BIOS...
I checked my SPI_BAR register
SPI_BAR + 4 [15] =0 (FLOCKDN
SPI_BAR + C = 0x0
SPI_BAR + DC [1] = 1 Enable BLE
SPI_BAR + DC [5] = 1 Enable EISS
Is it caused by BLE and EISS?
If yes, how can I change the register to disable BLE and EISS?