(r4) BuildSAM9 < Linux

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---++ Add Wi-Fi support to Atmel SAM9 platforms

This page will provide short information on how to build and install the Wi-Fi Linux driver on the Atmel AT91 SAM9M10-EKES, AT91 SAM9M10-G45-EK and AT91SAM9RLEK development boards.<br /><br /><strong>NOTE:</strong> This information should be used in addition to the instructions given on http://www.linux4sam.org<br /><br />To be able to use the owl wifi driver on the SAM9 boards, the kernel must be patched and the owl wifi driver kernel module must be built and installed. This can be performed "standalone" or from the Angstrom/OpenEmbedded environment.

It is also possible to use a pre-built image that is provided by HD Wireless. See [[DemoSAM9]] for information about the demo image.

This page will describe the two options for building and installing the Wi-Fi driver on the Atmel SAM9 development boards.
---+++ Adding Wi-Fi support to Angstrom/OpenEmbedded

When building a kernel and a rootfs using Angstrom/OpenEmbedded, the oe_at91sam-owl-wifi.patch should be applied to the oe_at91sam.tgz overlay tree (ftp://ftp.linux4sam.org/pub/oe/linux4sam_2.1/oe_at91sam.tgz).

First, follow the instructions at: http://www.at91.com/linux4sam/bin/view/Linux4SAM/OpenEmbeddedAngstromBuild#How_to_build_Angstrom_for_AT91

After applying the AT91 OpenEmbedded overlay tree, apply the owl wifi patch: [[%ATTACHURL%/oe_at91sam-owl-wifi.patch][oe_at91sam-owl-wifi.patch]]
<verbatim>angr@blorg:~/oe$ cd oe_at91sam
angr@blorg:~/oe/oe_at91sam$ cp /path/to/oe_at91sam-owl-wifi.patch .
angr@blorg:~/oe/oe_at91sam$ patch -p1 < oe_at91sam-owl-wifi.patch</verbatim>

Then continue with the remainig steps as described in "Setup local configuration" on http://www.at91.com/linux4sam/bin/view/Linux4SAM/OpenEmbeddedAngstromBuild#How_to_build_Angstrom_for_AT91

The kernel and rootfs image will now have wifi support, and the module will be loaded upon system start.
---+++ Adding Wi-Fi support to a "custom" kernel

In "standalone" mode, it is assumed that a custom kernel image is built and used according to http://www.at91.com/linux4sam/bin/view/Linux4SAM/LinuxKernel.<br /><br />During the "Get and patch the Linux kernel", as described in http://www.at91.com/linux4sam/bin/view/Linux4SAM/LinuxKernel, apply the [[%ATTACHURL%/2.6.30-at91-sdio-irq-support-both-slots.patch][2.6.30-at91-sdio-irq-support-both-slots.patch]] after applying the 2.6.30-at91-exp.4.tar.gz patchset:
<verbatim>angr@blorg:~$ cd linux-2.6.30
angr@blorg:~/linux-2.6.30$ cp /path/to/2.6.30-at91-sdio-irq-support-both-slots.patch .
angr@blorg:~/linux-2.6.30$ patch -p1 < 2.6.30-at91-sdio-irq-support-both-slots.patch</verbatim>

After applying the patch, follow the remaining steps as described in http://www.at91.com/linux4sam/bin/view/Linux4SAM/LinuxKernel to configure, build and install the kernel.<br /><br />See the topic about building the Wi-Fi driver [[BuildDriver]] for information on how to build and install the owl wifi driver kernel module.

Attachments

Topic attachments
I	Attachment	Action	Size	Date	Who	Comment
patch	2.6.30-at91-sdio-irq-support-both-slots.patch	manage	3.3 K	2011-02-02 - 07:14	AndersGrahn	Linux kernel patch for SDIO performance enhancement (both slots).
patch	2.6.30-at91-sdio-irq-support.patch	manage	3.4 K	2010-10-08 - 14:22	AndersGrahn	Linux kernel patch for SDIO performance enhancement.
patch	oe_at91sam-owl-wifi.patch	manage	4.6 K	2011-02-17 - 13:08	AndersGrahn	Patch for OpenEmbedded build

Topic revision: r4 - 2011-02-17 - 14:07:16 - AndersGrahn

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