On 02/19/2014 01:54 PM, Gilles Chanteperdrix wrote:
On 02/19/2014 01:36 PM, Huub Van Niekerk wrote:
On Wednesday, February 19, 2014 12:32 PM, Paul <[email protected]>
wrote:
On Wednesday 19 February 2014, Huub Van Niekerk wrote:
The patch you created for the armhf architecture, will it work
with older Linux kernels such as 2.6.x and 3.2.x as well ?
Just to clarify, the patch that I submitted is for the Broadcom
BCM2835 SoC (an ARMv6K core) - armhf covers a variety of ARM
flavours.
The board I use has a Cortex-A8 / ARMv7 compatible OMAP3530(DM3730)
core. So can you tell if this matters for the patch ?
If you can find a 2.6.xx kernel that has support for the BCM2835
AND includes the DWC-OTG drivers, there is no reason why the
Raspberry Pi patch couldn't be adapted.
The 3.2.x kernel reportedly had a few serious bugs - I don't know
if these bugs impacted on the BCM2835 or the operation of Xenomai.
If you are looking at using a 3.x.x series kernel, it would be
advisable to get the latest stable release that has a corresponding
Xenomai patch.
Could this explain why there is only a linux-patch-kernel 2.5.5.2
package available ? A discrepancy is btw, that from the Ubuntu armhf
repository kernel 3.2.0 is loaded while xenomai 2.5.5.2 only supports
kernel 2.6.
This is an ubuntu problem, xenomai developers have no control on that.
Yes, I'm trying to use the 3.5.7 kernel since this is
supported by the latest 2.6.3 xenomai. On x86 it runs great, but so
far on my BeagleBoard-xM with ARMv7 core, the kernel doesn't start
properly. I don't think that has anything to do with xenomai though.
Please find attached the configuration I use for Xenomai on the "IGEPv2"
board. It is for linux 3.10, but should be fine for 3.5.7 as well. This
configuration will not boot on beagle, you will need to enable support
for the board. Note that this is a bare-bones configuration, optimized
for compilation time and latencies, using for instance the serial port
for console, do not expect anything too fancy.
Sorry, I sent the debug configuration, will send the non-debug one tonight.
--
Gilles.
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