- Application Binary Interface
The convention for register usage and C linkage commonly used on
desktop
PowerPC machines. Similar, but not identical to the
EABI.
Includes binding specific ppc registers to certain fixed purposes, even though there may be no technical reason to enforce such binding, simplifying the process of linking together two separate sets of object code. e.g the
ABI states that r1 shall be the stack pointer.
- Background Debug Mode
An on-chip debug interface supported by a special hardware port on
some processors. It allows to take full control over the
CPU with
minimal external hardware, in many cases eliminationg the need for
expensive tools like In-Circuit-Emulators.
- Boot Protokoll
A network protocol which can be used to inquire a server about
information for the intended system configuration (like IP address,
host name, netmask, name server, routing, name of a boot image,
address of NFS server, etc.
- Common Flash Interface
CFI is a standard for flash chips that allows to create device
independend drivers for such chips.
- Communications Processor Module
The magic communications co-processor in Motorola
PowerQUICC? devices.
It contains
SCCs and
SMCs, and performs
SDMA and
IDMA.
- Central Processor Unit
Depending on the context, this may refer to the
PowerPC core
itself, or the physical processor device (including
CPM,
SIU,
packaging etc) as a single unit.
- Compressed ROM File System
Cramfs is designed to be a simple, small, and compressed file
system for ROM based embedded systems.
CramFs is read-only, limited
to 256MB file systems (with 16MB files), and doesn't support 16/32
bits uid/gid, hard links and timestamps.
- Concurrent Versions System
CVS is a version control system; it can be used to record the
history of files, so that it is for instance possible to retrieve
specific versions of a source tree.
- Dynamic Host Configuration Protocol
A network protocol which can be used to inquire a server about
information for the intended system configuration (like IP address,
host name, netmask, name server, routing, name of a boot image,
address of NFS server, etc.). Sucessor of
BOOTP
- Direct Memory Access
A form a data transfer directly between memory and a peripheral or
between memory and memory, without normal program intervention.
- Embedded Application Binary Interface
The convention for register usage and C linkage commonly used on
embedded
PowerPC machines, derived from the
ABI.
ELDK
- Embedded Linux Development Kit
A package which contains everything you need to get startet with an
Embedded Linux project on your hardware:
- cross development tools (like compiler, assembler,
linker etc.) that are running on a Host
system while generating code for a Target
system
- native tools and libraries that can be use to build a system
running on the target; they can also be exported on a NFS server
and used as root filesystem for the target
- source code and binary images for PPCBoot and Linux
- Our SELF package as example configuration for an embedded system.
- Fast Ethernet Controller
The 100 Mbps (100Base) Ethernet controller, present on 'T' devices
such as the 860T and 855T.
- File Transfer Protocol
A protocol that can be used to transfer files over a network.
/ LGPL - GNU General Public License/Lesser General Public License
The full license text can be found at
http://www.gnu.org/copyleft/gpl.html.
The licenses under which the Linux kernel and much of the utility and
library code necessary to build a complete system may be copied, distributed
and modified. Each portion of the software is copyright by its respected copyright
holder, and you must comply with the terms of the license in order to legally copy
(and hence use) it. One significant requirement is that you freely redistribute
any modifications you make; if you can't cope with this, embedded Linux isn't for you.
The computer system which is used for software development. For
instance it is used to run the tools of the ELDK
to build software packages.
- Independent
DMA
A general purpose
DMA engine with relatively limited throughput
provided by the microcoded
CPM, for use with external peripherals
or memory-to-memory transfers.
- Journalling Flash File System
JFFS (developed by Axis Communicartion AB, Sweden) is a log-based
filesystem on top of the
MTD
layer; it promises to keep your filesystem and data in a consistent
state even in cases of sudden power-down or system crashes. That's
why it is especially useful for embedded devices where a regular
shutdown procedure cannot always be guaranteed.
- Second version of the Journalling Flash File System
Like
JFFS this is a journalling flash filesystem that is based on the
MTD layer; it fixes some design problems of
JFFS and adds transparent
compression.
- Joint Test Action Group
A standard (see "IEEE Standard 1149.1") that defines how to control the
pins of
JTAG compliant devices.
Here:
An on-chip debug interface supported by a special hardware port on
some processors. It allows to take full control over the
CPU with
minimal external hardware, in many cases eliminationg the need for
expensive tools like In-Circuit-Emulators.
- Media Independent Interface
The IEEE Ethernet standard control interface used to communicate
between the on-chip Ethernet controller and the external
PHY.
- Memory Management Unit
CPU component which maps kernel- and user-space virtual addresses to
physical addresses, and is an integral part of Linux kernel operation.
- Memory Technology Devices
The
MTD functions in Linux support memory devices like flash or
Disk-On-Chip in a device-independend way so that the higher
software layers (like filesystem code) need no knowledge about the
actual hardware properties.
PC
Card
?
PC Cards are self-contained extension cards especially for laptops
and other types of portable computers. In just about the size of a
credit card they provide functions like LAN cards (including
wireless LAN), modems, ISDN cards, or hard disk drives - often
"solid-state" disks based on flash chips.
The PC Card technology has been has been developed and standardized by the
Personal Computer Memory Card International Association (
PCMCIA),
see
http://www.pcmcia.org/pccard.htm .
- Personal Computer Memory Card International Association
PCMCIA is an abbreviation that can stand for several things: the
association which defines the standard, the specification itself,
or the devices. The official term for the devices is
PC-Card.
- Physical Interface
The IEEE Ethernet standard interface between the external
physical layer transceiver and the on-chip ethernet controller
in a
PowerQUICC? device. Often used to refer to the external
transceiver itself, the
PHY is controlled more or less transparently
to software via the
MII.
- Real-Time Operating System
- Serial Communications Controller
The high performance module(s) within the
CPM which implement the lowest
layer of various serial protocols, such as Asynchronous serial (
UART),
10 Mbps Ethernet, HDLC etc.
- Serial
DMA
DMA used to transfer data to and from the
SCCs.
- Simple Embedded Linux Framework
A simple default configuration for Embedded Linux systems that is suitable
as starting point for building your own systems. It is based on
BusyBox
to provide an
init process, shell, and many
common tools (from
cat and
ls
to
vi), plus some other tools to provide network
connectivity, allowing to access the system over the internet using
telnet and
FTP services.
- System Interface Unit
Provides much of the external interfacing logic. It's the other
major module on Motorola
PowerQUICC? devices alongside the
CPU core and
CPM.
- Serial Management Controller
A lower performance version of the
SCCs with more limited functionality,
particularly useful for serial debug ports and low throughput serial protocols.
- Serial Peripheral Interface
A relatively simple synchronous serial interface for connecting low speed
external devices using minimal wires.
- Motorola S-Record Format
Motorola S-records are an industry-standard format for transmitting binary files to target systems and PROM programmers.
See also:
http://pmon.groupbsd.org/Info/srec.htm
The computer system which will be used later in you application
environment, for instance an Embedded System. In many cases it has
a different architecture and much more limited resoucres than a
typical
Host system, so it is often not possible to develop the software
directly (native) on this system.
- Trivial File Transfer Protocol
A simple network protocol for file transfer; used in combination
with
BOOTP or
DHCP to load boot images etc. over the network.
- Universal Asynchronous Receiver Transmitter
Generically, this refers to any device capable of implementing a variety
of asynchronous serial protocols, such as RS-232, HDLC and SDLC. In this
context, it refers to the operating mode of the
SCCs which provides this
functionality.
- User Programmable Machine
A highly flexible bus interfacing machine unit allowing external
peripherals with an extremely wide variety of interfacing requirements
to be connected directly to the
CPU.
