Embedded Handbook

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General topics
Introduction
Creating a cross-compiler
Cross-compiling with Portage
Cross-compiling the kernel
Compiling with qemu user chroot
Frequently asked questions
Emulators
Qemu
SkyEye
Armulator
Softgun
Hercules
Bootloaders
Das U-Boot
NeTTrom
RedBoot
SH-LILO
Boards
Hammer Board and Nail Board
LANTank
NetWinder
NSLU2
QNAP TurboStation 109/209/409
Marvell Sheevaplug
ACME SYSTEMS Netus G20
Genesi Efika MX
Pandaboard
TrimSlice
BeagleBone
BeagleBone Black
Beyond
Communication
Contributing
Vendors
External resources

The Gentoo Embedded Handbook is the center point for all Embedded work done with Gentoo. It aims to cover just about all aspects of the process - from theory, to design, to practice.

General topics

Embedded fundamentals you need before playing with hardware. See individual parts below or the all-in-one-page General topics article.

Introduction
An introduction into the world of embedded, cross-compilers, and dragons.
Creating a cross-compiler
Build a cross-compiler on your machine!
Cross-compiling with Portage
Leverage Portage as a cross-compiling package manager.
Cross-compiling the kernel
Cross-compile a kernel for your system with flair!
Compiling with qemu user chroot
How To compile with QEMU user.
Frequently asked questions
FAQs for Gentoo Embedded.

Emulators

Software emulation of systems can often times be as good (if not better) than the real thing.

Qemu
A generic and open source machine emulator and virtualizer for x86, x86_64, arm, sparc, powerpc, mips, m68k (coldfire), and superh.
SkyEye
ARM embedded hardware simulator.
Armulator
Emulate armnommu/uClinux (no-mmu Linux) in GDB.
Softgun
ARM software emulator.
Hercules
Hercules System/370, ESA/390 and zArchitecture Mainframe Emulator.

Bootloaders

From the obscure to the obscene, we'll cover some of the common bootloaders out there and how to get your feet wet with them.

Das U-Boot
The Universal Bootloader which supports every embedded architecture out there.
NeTTrom
Simple bootloader on NetWinders.
RedBoot
Small bootloader based on eCos which supports every embedded architecture out there.
SH-LILO
Port of LILO to SuperH which tends to be pretty common on that architecture.

Boards

Some boards are fun while others can be a PITA; we'll cover many of the common gotchas with systems out there.

Hammer Board and Nail Board
Little-endian armv4l board.
LANTank
Little-endian SuperH based NAS (using internal IDE) from I-O Data.
NetWinder
Little-endian ARMv4 based network server from Rebel.
NSLU2
Big-endian arm based NAS (using external USB) from Linksys.
QNAP TurboStation 109/209/409
Little-endian ARMv5TE NAS from QNAP.
Marvell Sheevaplug
Little-endian ARMv5TE from Marvell.
ACME SYSTEMS Netus G20
Netus G20 (ARMv5TE) from ACME SYSTEMS
Genesi Efika MX
Little-endian ARMv7-A from Genesi USA.
Pandaboard
Little-endian ARMv7-A from pandaboard.org.
TrimSlice
Little-endian ARMv7-A from Compulab/trimslice.com.
BeagleBone
Little-endian ARMv7-A from Beagleboard.org.
BeagleBone Black
Little-endian ARMv7-A from Beagleboard.org.

Beyond

A handbook can only go so far, so here we list resources to go the distance when we can't get you there.

Communication
Gentoo Embedded communication channels.
Contributing
Gentoo Embedded and you: the answer to the ever prevalent "What can I do?" question.
Vendors
Information specific to vendors who wish to help out.
External resources
External references to help you expand your embedded Linux knowledge.

This article is based on a document formerly found on our main website gentoo.org.
The following people contributed to the original document: Mike Frysinger, Ned Ludd, Robin H. Johnson, Alex Tarkovsky, Alexey Shvetsov, Raúl Porcel, Joshua Saddler on April 28, 2013.
They are listed here as the Wiki history does not allow for any external attribution. If you edit the Wiki article, please do not add yourself here; your contributions are recorded on the history page.