3 This page describes how to run coreboot on the [ASRock H81M-HDS].
5 ## Required proprietary blobs
8 Please see :doc:`../../northbridge/intel/haswell/mrc.bin`.
13 A fully working image should be possible just by setting your MAC
14 address and obtaining the Haswell mrc. You can set the basic config
15 with the following commands. However, it is strongly advised to use
16 `make menuconfig` afterwards (or instead), so that you can see all of
20 make distclean # Note: this will remove your current config, if it exists.
22 ./util/scripts/config --enable VENDOR_ASROCK
23 ./util/scripts/config --enable BOARD_ASROCK_H81M_HDS
24 ./util/scripts/config --enable HAVE_MRC
25 ./util/scripts/config --set-str REALTEK_8168_MACADDRESS "xx:xx:xx:xx:xx:xx" # Fill this in!
29 If you don't plan on using coreboot's serial console to collect logs,
30 you might want to disable it at this point (`./util/scripts/config
31 --disable CONSOLE_SERIAL`). It should reduce the boot time by several
32 seconds. However, a more flexible method is to change the console log
33 level from within an OS using `util/nvramtool`, or with the `nvramcui`
36 Now, run `make` to build the coreboot image.
40 ### Internal programming
42 The main SPI flash can be accessed using [flashrom]. By default, only
43 the BIOS region of the flash is writable. If you wish to change any
44 other region, such as the Management Engine or firmware descriptor, then
45 an external programmer is required (unless you find a clever way around
46 the flash protection).
48 The following command may be used to flash coreboot:
51 sudo flashrom -p internal --ifd -i bios --noverify-all -w coreboot.rom
54 The use of `--noverify-all` is required since the Management Engine
55 region is not readable even by the host.
57 ### External programming
59 The flash chip is a 4 MiB socketed DIP-8 chip. Specifically, it's a
60 Winbond W25Q32FV, whose datasheet can be found [here][W25Q32FV].
61 The chip is located to the bottom right-hand side of the board. For
62 a precise location, refer to section 1.4 (Motherboard Layout) of the
63 [board manual], where the chip is labelled "32Mb BIOS". Take note of
64 the chip's orientation, remove it from its socket, and flash it with
65 an external programmer. For reference, the notch in the chip should be
66 facing towards the bottom of the board.
70 - The VGA port doesn't work until the OS reinitialises the display.
72 - There is no automatic, OS-independent fan control. This is because
73 the Super I/O hardware monitor can only obtain valid CPU temperature
74 readings from the PECI agent, but the required driver doesn't exist
75 in coreboot. The `coretemp` driver can still be used for accurate CPU
76 temperature readings from an OS.
79 Please also see :doc:`../../northbridge/intel/haswell/known-issues`.
89 - chassis intrusion header
90 - chassis speaker header
102 - hardware monitor (see [Known issues](#known-issues))
105 - initialisation with Haswell mrc version 1.6.1 build 2
106 - graphics init with libgfxinit (see [Known issues](#known-issues))
107 - flashrom under the vendor firmware
108 - flashrom under coreboot
115 +------------------+--------------------------------------------------+
116 | Northbridge | :doc:`../../northbridge/intel/haswell/index` |
117 +------------------+--------------------------------------------------+
118 | Southbridge | Intel Lynx Point (H81) |
119 +------------------+--------------------------------------------------+
120 | CPU | Intel Haswell (LGA1150) |
121 +------------------+--------------------------------------------------+
122 | Super I/O | Nuvoton NCT6776 |
123 +------------------+--------------------------------------------------+
125 +------------------+--------------------------------------------------+
126 | Coprocessor | Intel Management Engine |
127 +------------------+--------------------------------------------------+
130 [ASRock H81M-HDS]: https://www.asrock.com/mb/Intel/H81M-HDS/
131 [W25Q32FV]: https://www.winbond.com/resource-files/w25q32fv%20revi%2010202015.pdf
132 [flashrom]: https://flashrom.org/Flashrom
133 [Board manual]: https://web.archive.org/web/20191231093418/http://asrock.pc.cdn.bitgravity.com/Manual/H81M-HDS.pdf