Minnowboard:MinnowMaxCoreboot
This page gives a step by step guide to building coreboot for the Minnowboard Max.
Contents
Requirements
- gcc
- git
- make
- ncurses-dev
Get sources and tools
NOTE: for simplicity, put all downloads and items extracted into the same directory.
Coreboot
- git clone http://review.coreboot.org/p/coreboot
- cd coreboot
- git submodule update --init --checkout
- git checkout b9a0809faeeef67e46cda17cf8f7a839c6fe614c
- Download config
FSP
- Download FSP archive
- extract from archive
- follow instructions in Readme_Extract to extract FSP
Binary Configuration Tool
- Download BCT archive
- extract archive from archive
- extract from archive
TXE and SPI descriptor
- ???????
- Not yet available. See Building without TXE/SPI descriptor section below for a possible workaround.
Setup
FSP
- cd bct
- ./bct --bin ../BAY_TRAIL_FSP_KIT/FSP/BAYTRAIL_FSP_GOLD_002_10-JANUARY-2014.fd --absf ../coreboot/src/vendorcode/intel/fsp/baytrail/absf/minnowmax_2gb.absf --bout ../minnowboard-max.fsp
- If you have a single core Minnowboard Max, change minnowmax_2gb.absf to minnowmax_1gb.absf
- DO NOT USE THE GUI. THE GUI DOES NOT WORK ON ALL LINUX DISTROS AND IS NOT NECESSARY FOR THIS.
- cd ..
Coreboot
- cd coreboot
- in src/soc/intel/fsp_baytrail/Kconfig line 127, change 'string' to 'string "ME PATH"'
- make menuconfig
- load provided config
- save config to .config
- If you have a single core Minnowboard Max, change "Mainboard" -> "Memory SKU to build" to 1GB
- Set "Chipset" -> "ME PATH" to the directory containing TXE and SPI descriptor
Building
- make crossgcc
- make
- The firmware produced is build/coreboot.rom
Building without TXE/SPI descriptor
This section has not been tested, but should work.
- make menuconfig
- Set Chipset -> Include the TXE to No
- Set Mainboard -> ROM chip size to 4 MB
- make crossgcc
- make
- When flashing the firmware, put the 4 MB image on the second half of the 8 MB chip, being careful not to overwrite the first half.
- If you accidentally overwrite the first half, you will need to reflash the original firmware, which is available here.