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   Software   eLinux



Developer Board 82/83

Developer Board LX


Linux 2.4

Tools (compiler, debugger)

OpenBT Bluetooth

For old products

Developer Board for Bluetooth

Developer Board
(ETRAX 100)

eLinux 2.0

Download section



Axis Linux/ETRAX port

The source code to Axis' Linux port for ETRAX 100 is available in the Download section. As usual, all kernel code is under the GPL (General Public License). You can find documentation in the documentation section.

The Linux/ETRAX port is based on the 2.0.38 Linux kernel, copyright Linus Torvalds et al. We are also using the uClinux patches for MMU-less Linux, copyright by D. Jeff Dionne and Kenneth Albanowski. For more info on uClinux, see uClinux - The Linux/Microcontroller Project. Linux is a Trademark of Linus Torvalds.

The kernel includes our Journaling Flash File System, JFFS, which is a file system designed by us to be used on Flash-ROM chips. It implements a log-structured file system which is always consistent no matter crashes or power-downs - and it does not require an fsck upon boot.

Also, the Axis Bluetooth stack is released with the kernel. Please see the Bluetooth section on this web for more information.

The Linux/ETRAX port also includes drivers for the following interfaces/hardware on the developer board: serial ports, parallel ports, I2C EEPROM, DS1302 timekeeper, general I/O.
Additionally, drivers for the following interfaces/hardware are included, but these interfaces are not supported by the development board: ATA, SCSI, Axis ARTPEC-1 image compression chip.

Register macros

Macros for manipulating ETRAX 100 mode registers in C(++) and assembler. Include the sv_addr_ag.h file in your source. Not documented as of yet. RTFS and these few examples.

          IO_STATE(R_DMA_CH0_CLR_INTR, clr_eop,  dont) |
          IO_STATE(R_DMA_CH0_CLR_INTR, clr_descr, do);
 foo = *R_TR_COUNTERS;
 if (foo & IO_MASK(R_TR_COUNTERS, deferred)) 

Shadow register macros

These are more advanced macros and are the ones we recommend. Read our internal documentation and get the tarball.

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