flashrom v1.0 on Linux 4.9.0-8-amd64 (x86_64)

flashrom is free software, get the source code at https://flashrom.org

flashrom was built with libpci 3.5.2, GCC 6.3.0 20170516, little endian

Command line (9 args): ./flashrom -p internal:ich_spi_forces=yes -V -N --ifd -i bios -w peppy/coreboot-peppy-seabios-latest.rom

Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).

Initializing internal programmer

Found candidate at: 00000500-00000510

Found coreboot table at 0x00000500.

Found candidate at: 00000000-00000194

Found coreboot table at 0x00000000.

coreboot table found at 0x7becf000.

coreboot header(24) checksum: 72d0 table(404) checksum: f9e3 entries: 10

Vendor ID: GOOGLE, part ID: Peppy

Using Internal DMI decoder.

DMI string chassis-type: "Desktop"

DMI string system-manufacturer: "GOOGLE"

DMI string system-product-name: "Peppy"

DMI string system-version: "1.0"

DMI string baseboard-manufacturer: "GOOGLE"

DMI string baseboard-product-name: "Peppy"

DMI string baseboard-version: "1.0"

Found chipset "Intel Lynx Point LP Mainstream" with PCI ID 8086:9c45.

This chipset is marked as untested. If you are using an up-to-date version

of flashrom *and* were (not) able to successfully update your firmware with it,

then please email a report to flashrom@flashrom.org including a verbose (-V) log.

Thank you!

Enabling flash write... Root Complex Register Block address = 0xfed1c000

Error accessing ICH RCRB, 0x4000 bytes at 0x00000000fed1c000

/dev/mem mmap failed: Operation not permitted

FAILED!

FATAL ERROR!

Unhandled programmer parameters (possibly due to another failure): ich_spi_forces=yes

Error: Programmer initialization failed.

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Also please find attached output of dmidecoed from this C720 computer:

I will appreciate any suggestion.