Linux for PowerPC Embedded Systems HOWTO

Table of Contents:

1. Introduction
- 1.1. Copyright
- 1.2. Updates
- 1.3. Credits
2. Resources
- 2.1. Home Page
- 2.2. FTP site
- 2.3. Mailing List
- 2.4. Home of the linux/ppc port
- 2.5. PowerPC Programming
- 2.6. Usenet Groups
- 2.7. Other Useful Resources
3. Target Hardware
- 3.1. PowerPC CPUs
- 3.2. RAM and ROM space
- 3.3. Commercially available boards
4. Host Development Platform
- 4.1. PowerPC
- 4.2. x86
5. Compiler Toolset
- 5.1. Building the toolchain
- 5.2. gcc
- 5.3. binutils
  - 5.3.1. Official GNU binutils
  - 5.3.2. H. J. Lu's "Linux binutils"
- 5.4. Precompiled/Prepackaged Kits
6. Programming the Target
- 6.1. BDM/JTAG Downloading
- 6.2. TFTP
- 6.3. Flash/EPROM Programmers
7. Boot Sequence
8. ROM Monitor
- 8.1. PPCBOOT
- 8.2. LiMon
- 8.3. PMON/2000
- 8.4. PPCForth
- 8.5. DINK32
- 8.6. 8xxROM
- 8.7. FADSROM
9. Boot Loader
- 9.1. bugboot
- 9.2. mbxboot
10. Kernel
- 10.1. Series
  - 10.1.1. Stable
    - 10.1.1.1. Montavista
    - 10.1.1.2. DENX Software Engineering
  - 10.1.2. Development
- 10.2. Memory Map
- 10.3. Porting
- 10.4. Patches
- 10.5. Contributing
- 10.6. Submitting Patches
- 10.7. Coding Style
11. Device Drivers
- 11.1. Examples
- 11.2. Flash memory
- 11.3. PCMCIA Cards
- 11.4. IDE/ATA Disk Drives
- 11.5. PCI Bridge
- 11.6. Watchdog
- 11.7. USB for MPC850/823
- 11.8. A/D and D/A
- 11.9. VME
- 11.10. HDLC/PPP
- 11.11. SPI
- 11.12. Linux STREAMS (LiS)
- 11.13. Accessing peripherals from user space
12. Runtime Library
- 12.1. glibc
- 12.2. sglibc
- 12.3. uClibc
- 12.4. dietlibc
- 12.5. newlib
- 12.6. libc5
13. Root Filesystem
- 13.1. NFS Mounted
- 13.2. Initial Ramdisk: initrd
- 13.3. ROMFS Flash Filesystem
- 13.4. cramfs
- 13.5. ramfs
- 13.6. Journaling Flash FileSystem(JFFS)
14. Floating Point
- 14.1. Software
- 14.2. Hardware
- 14.3. Mixed
15. Realtime Response
- 15.1. Soft
- 15.2. Hard
16. Threads
17. Applications
- 17.1. Standard GNU tools
- 17.2. Standalone Shell
- 17.3. BusyBox
- 17.4. Web Servers
  - 17.4.1. Boa
  - 17.4.2. thttpd, mini_httpd, micro_httpd
- 17.5. Graphical User Interface
  - 17.5.1. Microwindows
  - 17.5.2. PicoGUI
- 17.6. Java Virtual Machine(JVM)
18. Debugging
- 18.1. BDM
- 18.2. Serial Console
- 18.3. GDB
- 18.4. Kernel
- 18.5. Oops Messages
- 18.6. printk
19. Performance
- 19.1. CPU core
  - 19.1.1. Cache
  - 19.1.2. BogoMIPS
- 19.2. Profiling
- 19.3. IDMA
- 19.4. Network
- 19.5. Optimization
20. Common Mistakes and Problems
- 20.1. Changing KERNELBASE/KERNELLOAD
- 20.2. Leaving the Watchdog enabled
- 20.3. Mixing code compiled for software and hardware floating point
- 20.4. Using an unmodified glibc
- 20.5. "Kernel Mode Software FPU Emulation" panic
- 20.6. NFS gives "neighbour table overflow"
- 20.7. "Kernel panic: No init found..." on startup
21. Alternatives
- 21.1. eCos - Embedded Configurable Operating System
- 21.2. RTEMS - Real Time Executive for Multiprocessor Systems
22. Glossary
23. GNU Free Documentation License
- 23.1. PREAMBLE
- 23.2. APPLICABILITY AND DEFINITIONS
- 23.3. VERBATIM COPYING
- 23.4. COPYING IN QUANTITY
- 23.5. MODIFICATIONS
- 23.6. COMBINING DOCUMENTS
- 23.7. COLLECTIONS OF DOCUMENTS
- 23.8. AGGREGATION WITH INDEPENDENT WORKS
- 23.9. TRANSLATION
- 23.10. TERMINATION
- 23.11. FUTURE REVISIONS OF THIS LICENSE
- 23.12. How to use this License for your documents

1. Introduction

This document is an attempt to tell you what you need to know to use Linux on an embedded PowerPC-based system, and is a distillation of the collective wisdom from the linuxppc-embeddedmailinglist.

This document is a Wiki adaption of the original Linux for PowerPC Embedded Systems HOWTO last maintained by Boas Betzler.

Some of the information here is in the form of references to the mailing list archives. Follow the threads in the archive to get more information.

This document is laid out roughly in the order of the steps necessary to implement a complete system, which is similar to boot order starting at the lowest level and working upwards.

1.1. Copyright

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in section 23. GNU Free Documentation License

The views expressed here are not necessarily those of CISRA or Canon Inc or IBM Corp.

1.2. Updates

The latest HTML version of this document is available online at http://www.denx.de/twiki/bin/view/PPCEmbedded

If you want to print this document you can find print ready versions here (sorry not implemented yet).

1.3. Credits

Based on the HOWTO by Boas Betzler which was itself based on the original HOWTO by Graham Stoney, the Wiki community is now maintaining this document. It is assembled utilising the wisdom dispensed by many others, particularly the gurus in the field: Dan Malek, Cort Dougan, Marcus Sundberg, Wolfgang Denk, Richard Hendricks, Matt Porter, Grant Erickson, Darvis Nevil, Murray Jensen, Matthew Locke and others. They deserve the credit - I doubt you'll find a more helpful group of people.

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