Hi,
the FAQ explicitly asked to send information about currently unsupported motherboard.
https://www.coreboot.org/FAQ#Will_coreboot_work_on_my_machine.3F
1. Asus P5G41-M. Intel Core 2 Duo E7600 @ 3.06GHz. Northbridge G41. Southbridge ICH7.
2. lspci -tvnn. See lspci.txt attached.
3. Super I/O chip: Winbond W83627DHG-P/-PT. See superiotool.txt attached.
4. BIOS: Winbond flash chip "W25X80" (1024 kB, SPI). See flashroom.txt
5. https://www.asus.com/Motherboards/P5G41M/specifications/ http://dlcdnet.asus.com/pub/ASUS/mb/socket775/P5G41-M/E4832_P5G41-M-manual.z...
Thank you for your attention.
Congratulations for your work,
Vicente.