As previously mentioned, the descriptor, Intel ME and the GbE blobs are needed. These should map to the table that was printed. The Gigabit Ethernet configuration data is specific to each machine, and as such, must also be extracted from the flash chip.Īt this point, the working directory should contain four new files, which follow the format flashregion_*.bin. This is recommended, as not only does it improve security, it also leaves more space on the flash chip for other payloads. However, coreboot can drastically reduce the size of it, removing its network and system resource access. Since Intel ME is required on these boards, it must be extracted. On older devices, these can be safely removed with libreboot, but on Sandy Bridge and newer, they are required for the computer to run properly.
These are binary blobs that initialize parts of the computer (In this case, Intel Management Engine and Gigabit Ethernet).
Notice how the above table contains ME and GbE. Intel ME and Gigabit Ethernet configuration data A standard partition table may look like this: This will print a partition table, and extract some blobs.
Mstar online wiki install#
Install ich_descriptor_tool, a tool for reading descriptor-mode SPI-flash images for Intel chipsetsĮnable support for Altera USB-Blaster dongles SUpport for SPI flash ROMs accessible via Microchip PICkit2Įnable support for SI-Prog like hardware by LancosĮnable programmer for Marvell SATA controllersĮnable programmer for SiI SATA controllers Support for EEPROMs on Intel Gigabit network cardsĮnable support for OGP (Open Graphics Project) SPI flashing Support for SPI flash ROMs accessible through DDC in MSTAR-equipped displays Support for SEGGER J-Link and compatible devicesĮnable support for Linux mtd SPI flash devicesĮnable support for Linux userspace spidev interface Support for ITE IT8212F ATA/RAID controllers Support for Promise PDC2026x (FastTrak/Ultra)Įnable support for Digilent iCEblink40 development boardĮnable ftdi programmer, flashing through FTDI/SPI USB interfaceĮnable internal DMI decoding rather than use sys-apps/dmidecode Highpoint (HPT) ATA/RAID controller support Often vendors solder two chips to save money. SPI chips are common in sizes from 2MB - 16MB. If you need help with soldering ask hackerspaces near your location. Sometimes these chips are in a WSON-8 package in which case the WSON-8 chip needs to be desoldered, and resoldered with a new SOIC-8. The most common package for these chips is SOIC-8 which can be flashed via testclip. There are different types of SPI chips ( list). If the flash chip is SPI based, make sure to get a Pomona SOIC-8 testclip for £15. If using one of these, make sure to copy the dump of the flash chip onto a more powerful computer. Any model and revision will do, but be warned that the earlier ones do not have enough RAM to compile coreboot by themselves. This guide assumes the device contains an SPI flash chip, which requires a clip to connect up to the flasher.Īs a flasher, a Raspberry Pi can easily be used. Guides for locating the chip will generally be on the coreboot wiki. This is important, as the vendor usually locks the flash chip via soft lockdown. In general, the flash chip must be found on the board of the selected hardware. If an older device is being used, it may be possible to remove all proprietary binary blobs. In the table below are some well supported devices which are more or less recently released. The fully up-to-date table is available at the following link. There are different types of architectures and supported hardware. 8.2 Understanding the impact of UEFI, SecureBoot and BootGuard.8 Platform lockdown and device ownership.6.2 Nothing is booting anymore (aka SPI chip bricked).6.1 Coreboot isn't booting (Broken build).3.1 Intel ME and Gigabit Ethernet configuration data.
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