Difference between revisions of "EBC Exercise 25 Configuring U-boot"
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[[Category:BeagleBoard]] | [[Category:BeagleBoard]] | ||
| − | This follows the approach taken in [[ | + | This follows the approach taken in [[EBC Exercise 13 Configuring the Kernel]]. We'll use '''bitbake''' to get the source files for U-boot and then we'll edit them. |
== bitbake == | == bitbake == | ||
| − | When you did [[ | + | When you did [[EBC Exercise 12 Cross-Compiling and Finding the Right Kernel]] u-boot was downloaded and compiled. If you used the default configure, the source code was removed once it was done. Check and see: |
| − | + | ||
| − | $ cd ~/BeagleBoard/oe/build/tmp- | + | host$ '''cd ~/BeagleBoard/oe/build/tmp-angstrom_2010_x-eglibc/work/beagleboard-angstrom-linux-gnueabi''' |
| − | $ ls | + | host$ '''ls''' |
| − | + | ||
You should see a directory starting with <code>u-boot-</code>. The rest of the name tells what version you have. Change to that directory and see what's there: | You should see a directory starting with <code>u-boot-</code>. The rest of the name tells what version you have. Change to that directory and see what's there: | ||
| − | + | ||
| − | $ cd u-boot-* | + | host$ '''cd u-boot-*''' |
| − | $ ls | + | host$ '''ls''' |
| − | + | ||
| − | If you see a '''git''' directory, you are in luck. If you see just a '''temp''' directory you need to go back to [[ | + | If you see a '''git''' directory, you are in luck. If you see just a '''temp''' directory you need to go back to [[EBC Exercise 12 Cross-Compiling and Finding the Right Kernel]] and get it installed. |
Once you have the '''git''' directory, ''cd'' to it and look around. | Once you have the '''git''' directory, ''cd'' to it and look around. | ||
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You can now compile U-boot. | You can now compile U-boot. | ||
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| − | ''' | + | host$ '''source ~/.oe/crossCompileEnv.sh''' |
| + | host$ '''make''' | ||
| + | |||
| + | == Assignment== | ||
| + | |||
| + | Modify u-boot to include your initials in the prompt. | ||
Hint: Look for the omap3_beagle.h file. | Hint: Look for the omap3_beagle.h file. | ||
Revision as of 16:50, 2 January 2012
This follows the approach taken in EBC Exercise 13 Configuring the Kernel. We'll use bitbake to get the source files for U-boot and then we'll edit them.
bitbake
When you did EBC Exercise 12 Cross-Compiling and Finding the Right Kernel u-boot was downloaded and compiled. If you used the default configure, the source code was removed once it was done. Check and see:
host$ cd ~/BeagleBoard/oe/build/tmp-angstrom_2010_x-eglibc/work/beagleboard-angstrom-linux-gnueabi host$ ls
You should see a directory starting with u-boot-. The rest of the name tells what version you have. Change to that directory and see what's there:
host$ cd u-boot-* host$ ls
If you see a git directory, you are in luck. If you see just a temp directory you need to go back to EBC Exercise 12 Cross-Compiling and Finding the Right Kernel and get it installed.
Once you have the git directory, cd to it and look around.
Compiling U-boot
You can now compile U-boot.
host$ source ~/.oe/crossCompileEnv.sh host$ make
Assignment
Modify u-boot to include your initials in the prompt.
Hint: Look for the omap3_beagle.h file.
