# ASUS P8H61-M LX This page describes how to run coreboot on the [ASUS P8H61-M LX]. ## Flashing coreboot ```eval_rst +---------------------+------------+ | Type | Value | +=====================+============+ | Socketed flash | yes | +---------------------+------------+ | Model | W25Q32BV | +---------------------+------------+ | Size | 4 MiB | +---------------------+------------+ | Package | DIP-8 | +---------------------+------------+ | Write protection | no | +---------------------+------------+ | Dual BIOS feature | no | +---------------------+------------+ | Internal flashing | yes | +---------------------+------------+ ``` ### Internal programming The main SPI flash can be accessed using [flashrom]. By default, only the BIOS region of the flash is writable. If you wish to change any other region (Management Engine or flash descriptor), then an external programmer is required. The following command may be used to flash coreboot: ``` $ sudo flashrom --noverify-all --ifd -i bios -p internal -w coreboot.rom ``` The use of `--noverify-all` is required since the Management Engine region is not readable even by the host. ## Known issues - S3 suspend/resume does not work. This is the case for both coreboot and the vendor firmware, tested with Linux 4.9, Linux 4.17, and OpenBSD 6.3. Interestingly, it is possible to resume from S3 with Linux, but _only_ if the resume is started immediately after the suspend. - There is no automatic, OS-independent fan control. This is because the Super I/O hardware monitor can only obtain valid CPU temperature readings from the PECI agent, whose complete initialisation is not publicly documented. The `coretemp` driver can still be used for accurate CPU temperature readings. ## Untested - PCIe graphics - parallel port - PS/2 keyboard - EHCI debug - S/PDIF audio ## Working - USB - Gigabit Ethernet - integrated graphics - PCIe - SATA - PS/2 mouse - serial port - hardware monitor (see [Known issues](#known-issues) for caveats) - onboard audio - front panel audio - native raminit (2 x 2GB, DDR3-1333) - native graphics init (libgfxinit) - flashrom under the vendor firmware - flashrom under coreboot - Wake-on-LAN - Using `me_cleaner` (add `-S --whitelist EFFS,FCRS` if not using `me_cleaner` as part of the coreboot build process). ## Technology ```eval_rst +------------------+--------------------------------------------------+ | Northbridge | :doc:`../../northbridge/intel/sandybridge/index` | +------------------+--------------------------------------------------+ | Southbridge | bd82x6x | +------------------+--------------------------------------------------+ | CPU | model_206ax | +------------------+--------------------------------------------------+ | Super I/O | Nuvoton NCT6776 | +------------------+--------------------------------------------------+ | EC | None | +------------------+--------------------------------------------------+ | Coprocessor | Intel Management Engine | +------------------+--------------------------------------------------+ ``` ## Extra resources - [Board manual] - [Flash chip datasheet][W25Q32BV] [ASUS P8H61-M LX]: https://www.asus.com/Motherboards/P8H61M_LX/ [W25Q32BV]: https://web.archive.org/web/20211002141814/https://www.winbond.com/resource-files/w25q32bv_revi_100413_wo_automotive.pdf [flashrom]: https://flashrom.org/Flashrom [Board manual]: http://dlcdnet.asus.com/pub/ASUS/mb/LGA1155/P8H61_M_LX/E6803_P8H61-M_LX.zip