# ASUS P8Z77-V This page describes how to run coreboot on the [ASUS P8H77-V]. ## Flashing coreboot ```eval_rst +---------------------+----------------+ | Type | Value | +=====================+================+ | Socketed flash | yes | +---------------------+----------------+ | Model | W25Q64FVA1Q | +---------------------+----------------+ | Size | 8 MiB | +---------------------+----------------+ | Package | DIP-8 | +---------------------+----------------+ | Write protection | yes | +---------------------+----------------+ | Dual BIOS feature | no | +---------------------+----------------+ | Internal flashing | no | +---------------------+----------------+ ``` The flash IC is located beside the SATA ports (circled): ![](p8z77-v.jpg) ### How to flash The main SPI flash cannot be written because the vendor firmware disables BIOSWE and enables BLE/SMM_BWP flags in BIOS_CNTL for their latest BIOSes. An external programmer is required. You must flash standalone, flashing in-circuit doesn't work. The flash chip is socketed, so it's easy to remove and reflash. ## Working - PS/2 keyboard with SeaBIOS 1.14.0 and Debian GNU/Linux with kernel 5.10.28 - Integrated Ethernet NIC - S3 Suspend to RAM - USB2 on rear and front panel connectors - USB3 - Integrated SATA - CPU Temp sensors (tested PSensor on GNU/Linux) - Native raminit - Integrated graphics with libgfxinit (VGA/DVI-D/HDMI tested and working) - PCIe in PCIe-16x slots - Debug output from serial port ## Untested - EHCI debugging - S/PDIF audio - PS/2 mouse ## Technology ```eval_rst +------------------+--------------------------------------------------+ | Northbridge | :doc:`../../northbridge/intel/sandybridge/index` | +------------------+--------------------------------------------------+ | Southbridge | bd82x6x | +------------------+--------------------------------------------------+ | CPU | model_206ax | +------------------+--------------------------------------------------+ | Super I/O | Nuvoton NCT6779D | +------------------+--------------------------------------------------+ | EC | None | +------------------+--------------------------------------------------+ | Coprocessor | Intel Management Engine | +------------------+--------------------------------------------------+ ``` ## Extra resources - [Flash chip datasheet][W25Q64FVA1Q] [ASUS P8H77-V]: https://www.asus.com/supportonly/p8h77v/helpdesk_knowledge/ [W25Q64FVA1Q]: https://www.winbond.com/resource-files/w25q64fv%20revs%2007182017.pdf [flashrom]: https://flashrom.org/Flashrom