Pavel Sayekat has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/35011 )
Change subject: Doc/mb/asus: Add H110M-E/M.2 Documentation
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Doc/mb/asus: Add H110M-E/M.2 Documentation
Followed and adapted from the ASRock H110M-DVS Documentation
Signed-off-by: Pavel Sayekat <pavelsayekat(a)gmail.com>
Change-Id: I6c5aad50b513935eab70b502df1d95fb3413fa6b
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A Documentation/mainboard/asus/h110m-e_m2.md
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+# ASUS H110M-E/M.2
+
+This page describes how to run coreboot on the [ASUS H110M-E/M.2].
+
+## Required proprietary blobs
+
+Mainboard is based on Intel Skylake/Kaby Lake processor and H110 Chipset.
+Intel company provides [Firmware Support Package (2.0)](../../soc/intel/fsp/index.md)
+(intel FSP 2.0) to initialize this generation silicon. Please see this
+[document](../../soc/intel/code_development_model/code_development_model.md).
+
+FSP Information:
+
+```eval_rst
++-----------------------------+-------------------+-------------------+
+| FSP Project Name | Directory | Specification |
++-----------------------------+-------------------+-------------------+
+| 7th Generation Intel® Core™ | KabylakeFspBinPkg | 2.0 |
+| processors and chipsets | | |
+| (formerly Kaby Lake) | | |
++-----------------------------+-------------------+-------------------+
+```
+
+## Building coreboot
+
+The following steps set the default parameters for this board to build a
+fully working image:
+
+```bash
+make distclean
+touch .config
+./util/scripts/config --enable VENDOR_ASUS
+./util/scripts/config --enable BOARD_ASUS_H110M_E_M2
+./util/scripts/config --enable CONFIG_ADD_FSP_BINARIES
+./util/scripts/config --enable CONFIG_FSP_USE_REPO
+./util/scripts/config --set-str REALTEK_8168_MACADDRESS "xx:xx:xx:xx:xx:xx"
+make olddefconfig
+```
+
+However, it is strongly advised to use `make menuconfig` afterwards
+(or instead), so that you can see all of the settings.
+
+Use the following command to disable the serial console if debugging
+output is not required:
+
+```bash
+./util/scripts/config --disable CONSOLE_SERIAL
+```
+
+However, a more flexible method is to change the console log level from
+within an OS using `util/nvramtool`, or with the `nvramcui` payload.
+
+Now, run `make` to build the coreboot image.
+
+## Flashing coreboot
+
+### 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, such as the Management Engine or firmware descriptor, then
+an external programmer is required (unless you find a clever way around
+the flash protection). More information about this [here](../../flash_tutorial/index.md).
+
+### External programming
+
+The flash chip is a 16 MiB socketed DIP-8 chip. Specifically, it's a
+GIgaDevice GD25B128CPIG, whose datasheet can be found [here][GD25B128CPIG].
+The chip is located to the bottom right-hand side of the board. For
+a precise location, refer to section 1.3 (Motherboard Layout) of the
+[H110M-E/M.2 manual], where the chip is labelled "128Mb BIOS". Take note of
+the chip's orientation, remove it from its socket, and flash it with
+an external programmer. For reference, the notch in the chip should be
+facing towards the bottom of the board.
+
+## Known issues
+
+- The VGA port doesn't work. Discrete graphic card is used as primary
+ device for display output (if CONFIG_ONBOARD_VGA_IS_PRIMARY is not
+ set). Dynamic switching between iGPU and PEG is not yet supported.
+
+- SuperIO GPIO pin is used to reset Realtek chip. However, since the
+ Logical Device 7 (GPIO7, GPIO8) is not initialized, the network
+ chip is in a reset state all the time.
+
+## Untested
+
+- parallel port
+- PS/2 keyboard
+- PS/2 mouse
+- EHCI debug
+- TPM
+- infrared module
+- chassis intrusion header
+- chassis speaker header
+
+## Working
+
+- integrated graphics init with libgfxinit (see [Known issues](#known-issues))
+- PCIe x1
+- PEG x16 Gen3
+- SATA
+- USB
+- serial port
+- onboard audio
+- using `me_cleaner`
+- using `flashrom`
+
+## TODO
+
+- NCT5539D GPIOs
+- onboard network (see [Known issues](#known-issues))
+- S3 suspend/resume
+- Wake-on-LAN
+- hardware monitor
+
+## Technology
+
+```eval_rst
++------------------+--------------------------------------------------+
+| CPU | Intel Skylake/Kaby Lake (LGA1151) |
++------------------+--------------------------------------------------+
+| PCH | Intel Sunrise Point H110 |
++------------------+--------------------------------------------------+
+| Super I/O | Nuvoton NCT5539D |
++------------------+--------------------------------------------------+
+| EC | None |
++------------------+--------------------------------------------------+
+| Coprocessor | Intel Management Engine |
++------------------+--------------------------------------------------+
+```
+
+[ASUS H110M-E/M.2]: https://www.asus.com/Motherboards/H110M-E-M-2/overview/
+[GD25B128CPIG]: https://www.gigadevice.com/datasheet/gd25b127d/ [The closest match found]
+[flashrom]: https://flashrom.org/Flashrom
+[ASUS H110M-E/M.2 manual]: https://dlcdnets.asus.com/pub/ASUS/mb/LGA1151/H110M-E_M2/E11622_H110M-E_M2_…
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