93 lines
2.6 KiB
Plaintext
93 lines
2.6 KiB
Plaintext
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==================================================
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Getting started with 'base-hw' on Freescale i.MX31
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==================================================
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Martin Stein
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Abstract
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########
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This is a short tutorial that depicts a handy way to get a Genode ELF-image,
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build with 'base-hw', started on the Freescale i.MX31. For informations
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about how to build Genode images with 'base-hw', have a look at
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'<GENODE_DIR>/base-hw/doc/hw.txt'. This tutorial is dedicated to common
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Linux systems, but all examples originate from a Ubuntu 11.10.
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Tutorial
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########
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Connect the i.MX31 to your local Ethernet through its RJ45 connector.
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Additionally connect the i.MX31 to your machine through its COM port.
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We use the bootloader that is installed on the board by the manufacturer, it's
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the LogicLoader by Logic Product Development, Version 2.3.5-IMX31_10 0001.
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Now install the following packages to communicate with the i.MX31:
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! apt-get install tftp-hpa minicom
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Open '/etc/default/tftpd-hpa' with a text editor and ensure that it has
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the following content:
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! TFTP_USERNAME="tftp"
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! TFTP_DIRECTORY="/var/lib/tftpboot"
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! TFTP_ADDRESS="0.0.0.0:69"
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! TFTP_OPTIONS="-l"
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Tell TFTP wich image to provide:
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! cd /var/lib/tftpboot/
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! ln -s <GENODE_BOOT_ELF> image.elf
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Where '<GENODE_BOOT_ELF>' is the absolute path of the targeted ELF image.
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Start TFTP to enable the upload of the image:
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! service tftp-hpa restart
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Precautionary determine the inet address of your TFTP machine:
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! ifconfig
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Start Minicom in configuration mode:
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! minicom -s
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Go to 'Serial port setting' and ensure that the device is set to the
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TTY of the COM port you've conntected the i.MX31 with. In my case it was
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'/dev/ttyS0'. Configure the other settings for a baud rate of '115200',
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8 bit char length, no parity and 1 stop bit. Quit Minicom and start
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it once more in a dedicated terminal:
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! minicom
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Plug in the i.MX31 power connector or push the 'S1' button if the i.MX31 is
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already powered. Minicom should now show the following message below some
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bootloader info:
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! losh>
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We have to start DHCP first, so in the Minicom console type:
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! ifconfig sm0 dhcp
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Wait until DHCP is started:
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! Starting DHCP on sm0 ...
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! losh>
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Then load the Genode image:
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! load elf /tftp/<INET_ADDR>:/var/lib/tftpboot/image.elf
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Where '<INET_ADDR>' is the inet address of your TFTP machine.
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To execute the loaded image type:
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! exec start
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Now your Genode scenario should start and offer its debug output
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in Minicom. You can boot other images by redirecting the link
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'/var/lib/tftpboot/image.elf' accordingly, restarting your i.MX31
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and instructing LogicLoader again as described above.
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