Have a great day, my name Sergey,
The MPC8306 LTIB Linux BSP supports FlexCAN. There is FlexCAN driver code for the TWR-MPC830x board.
Here excerpt from flexcan.h included into the BSP :
/*
* drivers/net/flexcan/flexcan.h
*
* Definitions for Freescale flexcan Driver in MPC830x
* Based on imx25\flexcan driver.
*
* Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
*
*
* The code contained herein is licensed under the GNU General Public
* License.
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Please create service request to Freescale support about that on page
http://www.freescale.com/webapp/sps/site/homepage.jsp?code=SUPPORTHOME
and they will point where to find it or send you the source files. I myself got source files as example for CAN programming from Freescale expert.