TCP: Hash tables configured (established 2048 bind 2048) TCP bind hash table entries: 2048 (order: 1, 8192 bytes) TCP established hash table entries: 2048 (order: 2, 16384 bytes) IP route cache hash table entries: 1024 (order: 0, 4096 bytes) Linux version 2.6.33-arm1 ( ) (gcc version 4.4.1 (Sourcery G++ Lite 2010q1-189) ) #2 Mon Apr 21 11:58:ĬPU: ARMv7-M Processor revision 1 (ARMv7M)ĬPU: WRITE-BACK data cache, WRITE-THROUGH instruction cacheĬalibrating delay loop. In other words, in 2 seconds from power-on you have your unit running shell with the TCP/IP stack and Ethernet interface fully configured and connected to the network: When booted to the Kinetis target, kernel performance is fast (140 BogoMIPS) and boot time to the shell is about 2 seconds from power-on / reset. Refer to Installing Linux Images to Flash for information on how to install the image to the Kinetis SOM. It easily fits into the on-module Flash of the Kinetis SOM with plenty of room for custom enhancements. The bootable Linux image ready to be installed to the Kinetis SOM ( networking.uImage) is about 2.3 MBytes in size.

Here is how you run that project on the Kinetis SOM. In the Emcraft Linux distribution, the project can be found at projects/networking. This will register a platform device for the Kinetis Ethernet controller with the Ethernet driver:Įmcraft provides a sample Linux project called networking that demonstrates TCP/IP over Ethernet on the Kinetis SOM. Once you have enabled CONFIG_FEC, go to System Type -> Freescale Kinetis I/O interfaces and enable Freescale Kinetis Ethernet port (CONFIG_KINETIS_MAC). The device driver is linux/drivers/net/fec.c configured in the kernel using the CONFIG_FEC build time option in Device Drivers -> Network device support -> Ethernet (10 or 100Mbit):

There is a full-functioning Ethernet device driver available in the kernel tree for the Kinetis. All in all, you have the powerful Linux TCP/IP stack at your disposal. Additional tools and packages, such as for instance the SSH dropbear server, can be built specifically for uClinux.

Key user-space networking tools and utilities are available from the multi-call busybox utility. Userspace POSIX APIs are provided by the uClibc library. With uClinux running on the Kinetis, you get the full Linux TCP/IP stack (kernel version 2.6.33).

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