Blackfin/Linux Features

This is a very incomplete list of features that can be run on Blackfin/Linux. If you have problems with anything in the list, please let us know in the forums. This list is of features - which can be combined to make a project. If you are interested in how they can all work together, have a look at the projects list.

Kernel Info

Version

file: Makefile

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file does not exist in git

Specifications

Specification
Boot Time	See boot_speed and fast_boot_example
Scheduling	catalog/linuxkernel/chapter/ch10.html
Context Switch Time	lmbench
Task switching latency	lmbench
TCP/IP stack overhead	tcpip_performance
Worst case interrupt handling time	adeos
Number of priority Levels	priorities
Memory	reduce_kernel_memory_footprint
Memory Protection	Yes - to be written
ISR model	interrupts tasklets
Application Programming Interface	Posix

Debug Tools

Tool	Description	Example/Tutorial
gdb	GNU Debugger for uClinux Applications	debuggers
gdbserver	Remote Server for the GNU Debugger	debuggers
jtag	GNU Debugger via JTAG	debuggers
kgdb	GNU Kernel Debugger	kgdb
strace	trace system calls and signals	strace
trace dumps	application and kernel HW trace dumps	Analyzing traces

Drivers

Blackfin Linux drivers

Libraries

There are many libraries that are running. Only a few are listed.

Existing Libraries

Library	Description	Example/Tutorial
uClibc	the microcontroller C library	uclibc
ncurses	Ncurses is software emulation of curses	ncurses
sdl	Simple DirectMedia Layer	sdl
Qt	Qt is a multiplatform C++ GUI toolkit created and maintained by Trolltech	qt
microwindows (uclinux-dist only)	microwindows	microwindows
ffmpeg	FFmpeg is a complete, cross-platform solution to record, convert and stream audio and video.	ffmpeg
freetype2	FreeType 2 is a software font engine that is designed to be small, efficient, highly customizable, and portable while capable of producing high-quality output	freetype2
G.729 ab	This is g.729 codec library from ADI	libbfgdots
ALSA	ALSA library
USB	USB library
Bluetooth	Bluetooth library
DBus (buildroot only)	D-Bus is a message bus system, a simple way for applications to talk to one another.	Dbus
SSL	SSL library	SSL
crypto	crypto library	crypto
rtp	The Real-time Transport Protocol	ortp libnemesi
rtsp (buildroot only)	The Real Time Streaming Protocol	netembryo
sip	The Session Initiation Protocol for VoIP	osip2
lirc (buildroot only)	LIRC is a package that allows you to decode and send infra-red signals of many (but not all) commonly used remote controls.	lirc
touchscreen	The touch screen library	tslib
ICC	Inter Core Communication library allow applications in different OSes on different cores to send and receive data index by endpoint pairs.	../test_icc_on_bf561
MCAPI	MCAPI is a generic API on top of ICC library to communication among different applications in heterogeneous architecture.	../test_mcapi_on_bf561
many more	many more	…

File Systems

Introduction to filesystems, and information about the uClinux rootfs. Details about programming with file_systems. All file systems supported by any other Linux based distribution, should “just work” in the uClinux distribution.

FileSystem	Description	Example/Tutorial
cramfs	compresses rom based	cramfs
ext2	Basic Linux Filesystem, used as a Root File System	ext2
ext3	ext2 with journalling, used to provide a quick recovery after a shutdown	ext3
iso9660	CD-ROM media	ISO_9660
JFFS2	Flash File System	jffs
nfs	Unix Networked Filesystem	nfs
ntfs	New Technology File System (Windows NT, Windows 2000, Windows XP, Windows Server 2003, and Windows Vista)	NTFS
ramfs	Expanding, volatile ram based file system
romfs	read only based filesystem, flash or ram based systems, used for XIP
smb	Windows Networked Filesystem	smb
tmpfs	Fixed size volatile ram based file system
vfat	Windows File Allocation Table, used by many MP3 players, digital cameras, and (in general) devices that utilize Compact Flash	File Allocation Table
ubifs	Unsorted Block Image File System	UBIFS

Applications

Networking

Before many of the networking applications can be run, you must set up the network properly. Many of the instructions assume that the network configuration is completed and is working. To debug network issues, follow the networking troubleshooting guide.

Application	Description	Example/Tutorial
boa	http server	boa
dhcpcd	Dynamic Host Configuration Protocol Client	dhcpcd
dhcpd	Dynamic Host Configuration Protocol Server	dhcpd
dropbear	small SSH 2 server and client	dropbear
ftp	Internet file transfer program	ftp
ftpd	FTP Server Package	ftp
ftpget	Retrieve a remote file via FTP	ftp
ftpput	Store a local file on a remote machine via FTP	ftp
hostid	set or print system's host id	hostid
hostname	show or set the system's host name	hostname
ifconfig	configure a network interface	ifconfig
inetd		inetd
lynx (uclinux-dist only)	Text based Browser	browsers
nc	Netcat opens a pipe to IP:port	nc
netstat	Print network connections, routing tables, interface statistics, masquerade connections, and multicast memberships	netstat
nslookup	query Internet name servers interactively	nslookup
ntpdate	set date and time using NTP	ntp
ping	send ICMP ECHO_REQUEST to network hosts	ping
portmap	DARPA port to RPC program number mapper	portmap
ppp	Point-to-Point Protocol and PPP over Ethernet	ppp
ptp	IEEE1588 v1 Precision Time Protocol	ptp
ptp2 (buildroot only)	IEEE1588 v2 Precision Time Protocol	ptp2
rcp	remote file copy	remote_shell
route	show / manipulate the IP routing table	route
rsh	remote shell	remote_shell
rshd	remote shell deamon	remote_shell
smbmnt	helper utility for mounting SMB filesystems	smb
smbmount	mount an smbfs filesystem	smb
smbumount	smbfs umount for normal users	smb
telnet	user interface to the TELNET protocol	telnet
telnetd	telnet deamon	telnetd
tftp	IPv4 Trivial File Transfer Protocol client	tftp
traceroute	print the route packets take to network host	traceroute
vconfig	create and remove virtual ethernet devices	vconfig
wget	The non-interactive network downloader	wget
linphone	Linphone lets you phone to your friends anywhere in the whole world, freely, simply by using the internet.	linphone

Bluetooth Networking

Application	Description	Example/Tutorial
Bluetooth	Bluetooth is low-cost, low-power, short-range wireless technology.	bluetooth

Databases

Application	Description	Example/Tutorial
SQLite	SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine.	sqlite

User/Group Management

Application	Description	Example/Tutorial
addgroup	Part of busybox, adds a group	addgroup
adduser	Part of busybox, adds a user	adduser
delgroup	Deletes group GROUP from the system	delgroup
deluser	Deletes user USER from the system	deluser
getty	Opens a tty, prompts for a login name, then invokes /bin/login	getty
last	show listing of last logged in users	last
login	Begin session on the system	login
logname	print user's login name	logname
su	run a shell with substitute user and group IDs	su
sulogin	Single-user login	sulogin
whoami	print effective userid	whoami

Timekeeping

Application	Description	Example/Tutorial
adjtimex	Part of Buxybox, display or set the kernel time variables	adjtimex
date	print or set the system date and time	date
hwclock	Part of Buxybox, query and set a hardware clock (RTC)	hwclock
time	Time the execution of a script	time

Scripting

Application	Description	Example/Tutorial
awk	pattern scanning and processing language	awk
sed	stream editor	sed

Benchmarks/Demos

Application	Description	Example/Tutorial
dhrystone	Dhrystone is a general-performance benchmark test, which is used to measure and compare the performance of different computers	Dhrystone White Paper
whetstone	Whetstone is a benchmark test which attempts to measure the speed and efficiency at which a computer performs floating-point operations.	Whetstone
bonnie++	File system benchmark tool	bonnie++
lmbench	Kernel tasks schedule latency benchmark tool	lmbench
nbench	BYTE Magazine's BYTEmark benchmark program	nbench
thdm
bcdm
mtdm

File/Directory Manipulation

Application	Description	Example/Tutorial
basename	Strip directory and suffix from filenames	basename
cat	Concatenate files and print on the standard output	[cat]]
chgrp	Change group ownership	chgrp
chmod	Change file access permissions	chmod
chown	Change file owner and group
chroot	Run command or interactive shell with special root directory	chroot
cmp	compare two files byte by byte
cp	copy files and directories
cpio	copy files to and from archives
cut	remove sections from each line of files
df	report filesystem disk space usage
du	estimate file space usage
expand	convert tabs to spaces
find	search for files in a directory hierarchy
flash_eraseall
fold	wrap each input line to fit in specified width
grep	print lines matching a pattern	grep
gunzip	compress or expand files
gzip	compress or expand files
head	output the first part of files
id	print real and effective UIDs and GIDs
length	Prints out the length of the specified STRING
ln	make links between files
ls	list directory contents
md5sum	compute and check MD5 message digest
mkdir	make directories
mv	move (rename) files
pwd	print name of current/working directory
realpath	Returns the absolute pathnames of given argument
rm	remove files or directories
rmdir	remove empty directories
sort	sort lines of text files
tail	output the last part of files
tar	The GNU version of the tar archiving utility
tee	read from standard input and write to standard output and files
test	check file types and compare values
touch	change file timestamps
umount	unmount file systems
uniq	remove duplicate lines from a sorted file
unzip	list, test and extract compressed files in a ZIP archive
wc	print the number of newlines, words, and bytes in files
zcat	compress or expand files

Audio Applications

Application	Description	Example/Tutorial
mixer
mp3play
tone
vplay
vrec
aplay
arecord
speak_test
amixer

Kernel Commands/Control

Application	Description	Example/Tutorial
crond
crontab	maintain crontab files for individual users
dmesg	print or control the kernel ring buffer	dmesg
env	run a program in a modified environment
free	Display amount of free and used memory in the system
getopt	parse command options
halt	stop the system
init	process control initialization
insmod	insert a module into the Linux Kernel
kill	send signals to processes, or list signals
killall	kill processes by name
klogd	Kernel Log Daemon
logger	a shell command interface to the syslog(3) system log module
lsmod	show the status of modules in the Linux Kernel
mkfs.jffs2
modprobe	program to add and remove modules from the Linux Kernel
mount	mount a file system
msh	command interpreter (shell)	shell
pidof	find the process ID of a running program
pivot_root	change the root file system
poweroff	stop the system
ps	report a snapshot of the current processes	ps
reboot	stop the system
renice	alter priority of running processes
rmmod	remove a module from the Linux Kernel
sh	command interpreter (shell)	shell
sleep	delay for a specified amount of time
uname	print system information
uptime	tell how long the system has been running
usleep	sleep for the specified number of microseconds
version	print kernel version information

Misc Commands

Application	Description	Example/Tutorial
clear	Clear the terminal screen	clear
dc	an arbitrary precision calculator
echo	display a line of text
expr	evaluate expressions
false	do nothing, unsuccessfully
losetup	set up and control loop devices
mesg	display (do not display) messages from other users
mkfifo	make FIFOs (named pipes)
more	file perusal filter for crt viewing
printf	format and print data
seq	print a sequence of numbers
stty	change and print terminal line settings
sync	flush filesystem buffers
syslogd	Linux system logging utilities
top	display Linux tasks
tr	translate or delete characters
true	do nothing, successfully
tty	print the file name of the terminal connected to standard input
vi	a programmers text editor
watch	execute a program periodically, showing output fullscreen
which	shows the full path of (shell) commands
xargs	build and execute command lines from standard input
yes	output a string repeatedly until killed