EmbLogic's Blog

Project 00:

Configured TELNET and SSH server …

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project 10: successfully bring up the olinuxino board

I have successfully bring up the olinuxino board and i’m try to bring up the giu on the same board

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successfully bring up olinuxino A13 board

complete the bring up process…………..attach more storage device like pendrive,mouse etc.
easily copy data from pendrive to card home directory……………..

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sucessfully bringup the olinuxino board

i have successfully bring up the olinuxino board.
i did the two partition of sd card successfully.

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Project 10

Successfully finished the bring up of OLINUXINO A13 Board.
Now time for porting of GUI on the same board.

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Project 10:Bring up OLINUXINO A 13 Board

Completed the bring up of OLINUXINO A13 Board…. Successfully logged in as root and performed simple commands like ls , cd  , poweroff , etc…..

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successfully bring up the beagleboard_xm

did successfully the bring up of beagleboard_xm
did the two partiotions of sd card and format first partition with fat32 format and second partition with ext3.
Move MLO,u-boot.bin and uImage to the first partition.
Move file system to second partition.

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MDC

Completed Compression/ Decompression for 4 bit code length.
Running properly.
It creats a compress file and a key file(contaning masterarray).
For decompression it uses compress file and key file.
trying for any code length.

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Linux OS porting using Storage

successfully done:-
1.toolchain creation
2.beagle board bring-up.

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Character driver

Sir,

i have completed read, write operation in character driver, using semaphore,ioctl. Also implementing kernel timer.

 

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Ported Linux on Beagleboard Xm

Finally after so many trials and errors, I completed the initial step of Project 9.

Formatted the SD card , booted it on the beagle board ….

I faced a problem :- Kernel panic: not syncing: no init found: Try passing init option….

Now finally overcame it and my card has successfully booted on the beagle board…

 

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Project 9

Successfully did the bring up of beagle-board
Did the partitioning of SD Card.
Formatted both the partitions in FAT 32 and EXT format respectively.
First faced a problem : No init found.
Overcame the problem and successfully ported the Linux.

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Low level file IO

How can we access directory thorough a c program?
Question is to write a program to find all the files with ext ‘.txt’ in a current directory.

so, How can we access a directory? or any hint …

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Excessive kworker entries in process status table when system is idle.

When I list the processes executing on my system it displays many kworker/ processes with interruptible sleep (waiting for an event to complete) , an unknown value of tty and many different pids (even if my system is idle).
Also when I execute “top” it does not display any entry of kworker.
I am using fedora 16_64bit and 3.4.9-1.fc16.x86_64 kernel.
Can anyone please explain what kworker is/does? Why are there so many entries for  kworker processes in the process status table?

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Embedded Linux on ARM Cortex A8.

Embedded Linux is the use of Linux in embedded computer systems. Linux has been ported to a variety of CPUs which are not only primarily used as the processor of a desktop or server computer, but also ARM, AVR32, ETRAX CRIS, FR-V, H8300, IP7000, m68k, MIPS, mn10300, SuperH, and Xtensa processors, It is also used as an alternative to using a proprietary operating system and toolchain. Linux is an open source operating system. It enjoys support by a large group of engineers contributing back into the open source (similar process to the FSF’s GNU tools).This makes Linux a very dynamic and fast moving operating system.

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