eivindbohler / tinyllama2-bios

ROM / BIOS for the TinyLlama v2 retro computer

TinyLlama BIOS

This repo contains the tools necessary to build the TinyLlama v2 BIOS (Coreboot/SeaBIOS).
Based on the 86Duino project from https://github.com/roboard/build-coreboot

Tested on:

• Ubuntu 16.04 i386
• macOS Big Sur x86_64
• macOS Monterey x86_64 and arm64

Other operating systems and architectures are probably easy to get working as well, but your mileage may vary.

Prerequisites

Ubuntu

Install various tools:

$ sudo apt install git build-essential m4 bison flex python texinfo gnat

macOS (x86_64)

For Apple Silicon (arm64) CPUs, look here.

1. Install Homebrew:

$ /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

2. Install gcc version 6:

$ brew install gcc@6
$ ln -s /usr/local/bin/gcc-6 /usr/local/bin/gcc
$ ln -s /usr/local/bin/g++-6 /usr/local/bin/g++

3. Install gnu-tar and wget:

$ brew install gnu-tar wget

Build cross compiler

$ ./build-xgcc.sh

Build the ROM file

$ make

If building is successful, the 2 MB output ROM file will be in the out/ directory. Another file is also made - out/xxx-padded.rom - padded with 0xFF to fit 8 MB, for flashing directly to the SPI ROM using a hardware programmer. The Coreboot/SeaBIOS ROM will be located at the end of this 8 MB file.