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