Minnowboard:MinnowMaxCoreboot

This page gives a step by step guide to building coreboot for the Minnowboard Max.

= 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.
 * 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 =
 * make menuconfig
 * Set Chipset -> Include the TXE to No
 * make crossgcc
 * make
 * When flashing the firmware, only flash the last 3MB of the 8 MB image onto the last 3MB of the chip
 * Example command using flashrom and a dediprog: echo 00500000:007fffff coreboot > regions.txt ; sudo flashrom -p dediprog -l regions.txt -i coreboot -w coreboot.rom
 * If you accidentally overwrite the first half, you will need to reflash the original firmware, which is available here.