Intel® x86 Coreboot/FSP Development Process

The x86 development process for coreboot is broken into the following components:

Coreboot SoC development
Coreboot mainboard development
FSP 1.1 integration

The development process has two main phases:

Minimal coreboot; This phase is single threaded
Adding coreboot features

Minimal Coreboot

The combined steps below describe how to bring up a minimal coreboot for a system-on-a-chip (SoC) and a development board:

The initial coreboot steps are single threaded! The initial minimal FSP development is also single threaded. Progress can speed up by adding more developers after the minimal coreboot/FSP implementation reaches the payload.

Get the necessary tools:
- Linux: Use your package manager to install m4 bison flex and the libcurses development package.
  - Ubuntu or other Linux distribution that use apt, run:
```
sudo apt-get install m4 bison flex libncurses5-dev
```
Build the cross tools for i386:
- Linux:
```
make crossgcc-i386
```
  To use multiple processors for the toolchain build (which takes a long time), use:
```
make crossgcc-i386 CPUS=N
```
  where N is the number of cores to use for the build.
Get something to build:
1. FSP 1.1 required files
2. SoC required files
3. Board required files
Get result to start booting
Early Debug
Implement and debug the bootblock code

Modified: 31 January 2016