Linux Kernel for CM-X270 - Revision history

Mike: Linux Kernel for CM-X270 moved to CM-X270: Linux: Kernel

2009-12-23T08:45:42Z

Linux Kernel for CM-X270 moved to CM-X270: Linux: Kernel

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Mike at 09:54, 26 June 2008

2008-06-26T09:54:38Z

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Mike: /* Using Wireless LAN - udev installation on Debian image */

2008-06-15T05:55:13Z

‎Using Wireless LAN - udev installation on Debian image

Mike: /* Linux kernel 2.6.24 */

2008-06-12T13:04:53Z

‎Linux kernel 2.6.24

Mike: /* Linux kernel 2.6.24 - add WLAN installation instructions */

2008-06-12T13:04:21Z

‎Linux kernel 2.6.24 - add WLAN installation instructions

Mike at 12:09, 18 May 2008

2008-05-18T12:09:00Z

Mike: /* Using Linux kernel 2.6.24 on CM-X270 */

2008-03-11T09:45:29Z

‎Using Linux kernel 2.6.24 on CM-X270

Mike: /* Using Linux kernel 2.6.24 on CM-X270 */

2008-03-11T09:44:37Z

‎Using Linux kernel 2.6.24 on CM-X270

Mike at 09:14, 11 March 2008

2008-03-11T09:14:40Z

Mike: /* See also */

2008-03-11T07:33:52Z

‎See also

@@ Line 116: / Line 116: @@
 {{important|
-You need to have [http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html udev] installed and running on the CM-X270 for the driver to work properly.
+You need to have [http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html udev] installed and running on the CM-X270 for the driver to work properly. If you are using default Debian filesystem image you can install udev using {{cmd|apt-get}} package manager:
 }}

@@ Line 81: / Line 81: @@
 * Support for Marvell 8686 wireless LAN
-=== Using Wireless LAN ===
+==== Using Wireless LAN ====
 The latest revisions of CM-X270 include wireless LAN module based on Marvell 8686 chipset.
 The drivers for this chipset can be enabled in the kernel configuration '''"Device Drivers -> Network device support -> Wireless LAN"''' menu:

@@ Line 80: / Line 80: @@
 * Support for UART device integrated into PCI bridge
 * Support for Marvell 8686 wireless LAN
 ==== Known problems ====

@@ Line 71: / Line 71: @@
 USB device controller drivers for PXA270 are not available in mainline kernels, and this is the main reason we do not support USB device functionality on CM-X270. Yet, there several patches available at [http://www.rpsys.net/openzaurus/patches/ http://www.rpsys.net/openzaurus/patches/], [http://handhelds.org/cgi-bin/cvsweb.cgi/linux/kernel26/drivers/usb/gadget/ Handhelds.org], [http://raph.people.8d.com/armcore_kernel.php Raphael Assenat site] dedicated to Linux on CompuLab boards, and probably others. We never tried these patches, and we don't know which of them will work on CM-X270.
-== Using Linux kernel 2.6.24 on CM-X270 ==
+== Linux kernel 2.6.24 ==
-The CM-X270 platform support was merged into mainline kernel starting from version 2.6.24. There are still some features that present in 2.6.16 support for CM-X270 and that are not merged upstream. Most notable are CompuLab proprietary NAND flash driver, and differences in serial port mappings.
+The CM-X270 platform support was merged into mainline kernel starting from version 2.6.24. There are still some features that are not present in mainline kernel. Most of these features are available in preliminary release of [http://www.compulab.co.il/mediawiki/files/Linux/x270cm/linux-2.6.24-cm-x270.tar.gz Linux kernel 2.6.24 for CM-X270] (source code only).
-We are currently working on release of board support package for Linux kernel 2.6.24, but before the release is ready you can use the mainline kernel "as is". The on-board NAND flash can be accessed using [[Linux MTD drivers on CM-X270|MTD drivers]], and the below table summarizes differences in serial port mappings on CM-X270L and CM-X270W:
+=== Preliminary release of Linux kernel 2.6.24 for CM-X270 ===
 {|  style="border: 1px #555555 solid; border-collapse: collapse" border="1" cellpadding="3px"

← Older revision		Revision as of 09:45, 11 March 2008
Line 75:		Line 75:
	The CM-X270 platform support was merged into mainline kernel starting from version 2.6.24. There are still some features that present in 2.6.16 support for CM-X270 and that are not merged upstream. Most notable are CompuLab proprietary NAND flash driver, and differences in serial port mappings.		The CM-X270 platform support was merged into mainline kernel starting from version 2.6.24. There are still some features that present in 2.6.16 support for CM-X270 and that are not merged upstream. Most notable are CompuLab proprietary NAND flash driver, and differences in serial port mappings.

−	We are currently working on release of board support package for Linux kernel 2.6.24, but before the release is ready you can use the mainline kernel "as is". The on-board NAND flash can be accessed using [[Linux MTD drivers ~~for~~ CM-X270\|MTD drivers]], and the below table summarizes differences in serial port mappings on CM-X270L and CM-X270W:	+	We are currently working on release of board support package for Linux kernel 2.6.24, but before the release is ready you can use the mainline kernel "as is". The on-board NAND flash can be accessed using [[Linux MTD drivers on CM-X270\|MTD drivers]], and the below table summarizes differences in serial port mappings on CM-X270L and CM-X270W:

@@ Line 78: / Line 78: @@
-{| border="2"
+{|  style="border: 1px #555555 solid; border-collapse: collapse" border="1" cellpadding="3px"
 |+ Serial ports mapping on CM-X270'''L'''
 ! UART         || SB-X270 port name || Linux tty in 2.6.16 || Linux tty in 2.6.24
@@ Line 92: / Line 92: @@
-{| border="2"
+{|  style="border: 1px #555555 solid; border-collapse: collapse" border="1" cellpadding="3px"
 |+ Serial ports mapping on CM-X270'''W'''
 ! UART         || SB-X270 port name || Linux tty in 2.6.16 || Linux tty in 2.6.24

@@ Line 4: / Line 4: @@
 CompuLab provides ready-to-run binary kernel images, and source code of the modifications and additions made to the Linux kernel to work properly on CM-X270 modules.
-== Changelog ==
+== Building Linux kernel for CM-X270 ==
-=== Linux kernel 2.6.16 ===
+CompuLab provides proprietary driver for on-board NAND flash. This driver emulates block device and provides wear-leveling for the flash. The driver uses the same NAND flash layout as the ARMMon bootloader.
-* '''26-Dec-07'''
+Starting at kernel release at October 12, 2006, we also included MTD driver for CM-X270. More information about using MTD on CM-X270 can be found at [[Linux MTD drivers on CM-X270]] page.
-* '''13-Jun-07'''
+Recently we discovered that certain NAND flash chips are not tolerant to '''any''' activity on local bus during flash accesses. To overcome this limitation we added an option to NAND flash drivers that allows to ensure there is no bus activity at the time NAND flash is active. This option can be switched on and of with {{parameter|block_irqs}} parameter of the NAND flash driver.
-* '''06-Feb-06'''
+=== I2C and SPI ===
-* '''12-Oct-06'''
+Standard I2C and SPI drivers can be used to access these buses on CM-X270. The I2C drivers are present in Linux kernel 2.6.16, and can be easily enabled using Linux kernel configuration.
-* '''15-Aug-06'''
+As for the SPI drivers, they should be backported to Linux kernel 2.6.16 from 2.6.17 or more recent kernel version.
-* '''15-May-06'''
+=== USB device ===
-=== Linux kernel 2.6.12 ===
+USB device controller drivers for PXA270 are not available in mainline kernels, and this is the main reason we do not support USB device functionality on CM-X270. Yet, there several patches available at [http://www.rpsys.net/openzaurus/patches/ http://www.rpsys.net/openzaurus/patches/], [http://handhelds.org/cgi-bin/cvsweb.cgi/linux/kernel26/drivers/usb/gadget/ Handhelds.org], [http://raph.people.8d.com/armcore_kernel.php Raphael Assenat site] dedicated to Linux on CompuLab boards, and probably others. We never tried these patches, and we don't know which of them will work on CM-X270.
-* '''16-Mar-06'''
+== Using Linux kernel 2.6.24 on CM-X270 ==
-* '''27-Feb-06'''
+The CM-X270 platform support was merged into mainline kernel starting from version 2.6.24. There are still some features that present in 2.6.16 support for CM-X270 and that are not merged upstream. Most notable are CompuLab proprietary NAND flash driver, and differences in serial port mappings.
-* '''03-Jan-2005'''
+We are currently working on release of board support package for Linux kernel 2.6.24, but before the release is ready you can use the mainline kernel "as is". The on-board NAND flash can be accessed using [[Linux MTD drivers for CM-X270|MTD drivers]], and the below table summarizes differences in serial port mappings on CM-X270L and CM-X270W:
-== Building Linux kernel for CM-X270 ==
+{| border="2"
-Instructions for building Linux kernel for CM-X270 can be found [[Linux_Development_for_XScale_modules#Building_the_Linux_kernel_for_XScale_modules | here]].
+{| border="2"
 == See also ==

@@ Line 56: / Line 56: @@
 == See also ==
-* [[CM-X270 Linux:Getting started|CM-X270 Linux: Getting started]]
+* [[Getting started with Linux on CM-X270]]
-* [[Linux Development for XScale modules|Software Development for XScale modules]]
+* [[Linux Development for XScale modules]]
-* [[ARM:Debian|Debian Linux for Xscale modules]]
+* [[Debian Linux for CM-X270]]
 * [[Linux MTD drivers on CM-X270]]