Intel PCH/PCU SPI flash PCI driver

modulename: spi-intel-pci.ko

configname: CONFIG_SPI_INTEL_PCI

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>PCI support
└─>Intel PCH/PCU SPI flash PCI driver
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
This enables PCI support for the Intel PCH/PCU SPI controller in
master mode. This controller is used to hold BIOS and other
persistent settings. Controllers present in modern Intel hardware
only work in hardware sequencing mode, this means that the
controller exposes a subset of operations that makes it safer to
use. Using this driver it is possible to upgrade BIOS directly
from Linux.

To compile this driver as a module, choose M here: the module
will be called spi-intel-pci.

source code: