98 lines
3.2 KiB
Plaintext
98 lines
3.2 KiB
Plaintext
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===============================================
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Getting started with 'base-hw' on PandaBoard A2
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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 PandaBoard A2. 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 PandaBoard to your local Ethernet through its RJ45 connector.
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Additionally connect the PandaBoard to your machine through its COM port.
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Ensure that you have installed the genode tool chain that is available at:
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:[http://genode.org/download/tool-chain]:
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Genode tool-chain
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Ensure that '<GENODE_TOOL_CHAIN_DIR>/bin/' is in your 'PATH' variable.
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Get the Linaro U-Boot repository and compile U-Boot for PandaBoard:
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! git clone git://git.linaro.org/boot/u-boot-linaro-stable.git
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! cd <UBOOT_DIR>
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! make CROSS_COMPILE=genode-arm- omap4_panda_config
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! make CROSS_COMPILE=genode-arm-
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During the compilation i had some errors. The first was in assembly code,
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it seemed to originate from a slip with the typo and was easy to fix.
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The second kind of errors occured because the GCC version had no support for
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direct array initialization, thus i avoided them by simply initialize
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the array elements separately.
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Now install the following packages to communicate with the PandaBoard:
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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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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 PandaBoard 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:
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! minicom
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Mount your SD-card and copy the U-Boot files to its boot partition:
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! cd <UBOOT_DIR>; cp MLO /media/boot/; cp u-boot.bin /media/boot/
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Unmount the SD card and insert it into the appropriate PandaBoard slot.
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Plug in the power connector or push the 'S1' button if the PandaBoard 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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! Hit any key to stop autoboot:
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We have to stop autoboot and type in this line to load and boot the genode
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image via ethernet:
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! usb start; dhcp; bootelf 0x82000000
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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 PandaBoard
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and instructing U-boot again as described above.
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