FPGA loader: Difference between revisions

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Driver is installed in default Armadeus rootfs.
Driver is installed in default Armadeus rootfs.


In the Host directory ''target/linux/modules/fpga/dev_tools/fpga_devtools/'' you will find a script named ''fpgaloader.sh''.  
For the hackers, code is located in ''target/linux/modules/fpga/dev_tools/fpga_devtools/''.


Copy this script on the target and launch it:
== Driver usage ==
<pre class="apf">
# sh fpgaloader.sh
</pre>
This will load (=modprobe) the driver.
 
===Remark===
The default FPGA version is the Spartan3 200k.
The version can be changed when loading the module:
<pre class="apf">
# modprobe fpgaloader fpga_descriptor=0    (for a 200K)
</pre>
and:
<pre class="apf">
<pre class="apf">
  # modprobe fpgaloader fpga_descriptor=1    (for a 400k)
  # modprobe fpgaloader
</pre>
</pre>


These informations are given by the ''/proc'' interface.
*The FPGA loader driver is usable through the standard Linux filesystem interface. To read the available configuration, do:
 
== Driver usage ==
*The FPGA loader driver is usable through the standard Linux filesystem interface. To read the available configurations, do:
<pre class="apf">
<pre class="apf">
  # cat /proc/driver/fpga/loader
  # cat /proc/driver/fpga/loader
spartan slave serial
</pre>
</pre>
*The displayed sizes correspond to the different FPGA versions supported by the board:
** 130k: Spartan 200k
** 212k: Spartan 400k


*To upload a new firmware (here ''bramtest_top_apf.bin''), use:
*To upload a new firmware (here ''bramtest_top_apf.bin''), use:
<pre class="apf">
<pre class="apf">
  # dd if=bramtest_top_apf.bin of=/dev/fpga/fpgaloader
  # dd if=bramtest_top_apf.bin of=/dev/fpgaloader
</pre>
</pre>

Revision as of 00:20, 7 March 2009

On this page, you will find all the informations needed to use the Linux FPGA loader driver. This driver allows you to load the FPGA of your APF board from Linux userspace/shell (ie FPGA reprogrammation after Linux boot).

Driver installation

Driver is installed in default Armadeus rootfs.

For the hackers, code is located in target/linux/modules/fpga/dev_tools/fpga_devtools/.

Driver usage

 # modprobe fpgaloader
  • The FPGA loader driver is usable through the standard Linux filesystem interface. To read the available configuration, do:
 # cat /proc/driver/fpga/loader
 spartan slave serial
  • To upload a new firmware (here bramtest_top_apf.bin), use:
 # dd if=bramtest_top_apf.bin of=/dev/fpgaloader
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