|
You first need to select your timezone so that your system knows where it is located. Look for your timezone in /usr/share/zoneinfo, then copy it to /etc/localtime. Please avoid the /usr/share/zoneinfo/Etc/GMT* timezones as their names do not indicate the expected zones. For instance, GMT-8 is in fact GMT+8.
The core around which all distributions are built is the Linux kernel. It is the layer between the user programs and your system hardware. Gentoo provides its users several possible kernel sources. A full listing with description is available at the Gentoo Kernel Guide. For ARM systems, we will use gentoo-sources (contains additional patches for extra features). Now install it using emerge.
When you take a look in /usr/src you should see a symlink called linux pointing to your kernel source. In this case, the installed kernel source points to gentoo-sources-${kernel-version}. Your version may be different, so keep this in mind.
1. Default: Manual Configuration Manually configuring a kernel is often seen as the most difficult procedure a Linux user ever has to perform. Nothing is less true -- after configuring a couple of kernels you don't even remember that it was difficult ;) However, one thing is true: you must know your system when you start configuring a kernel manually. Most information can be gathered by emerging pciutils (emerge pciutils) which contains lspci. You will now be able to use lspci within the chrooted environment. You may safely ignore any pcilib warnings (like pcilib: cannot open /sys/bus/pci/devices) that lspci throws out. Alternatively, you can run lspci from a non-chrooted environment. The results are the same. You can also run lsmod to see what kernel modules the Installation CD uses (it might provide you with a nice hint on what to enable). Now go to your kernel source directory and execute make menuconfig. This will fire up an ncurses-based configuration menu.
You will be greeted with several configuration sections. We'll first list some options you must activate (otherwise Gentoo will not function, or not function properly without additional tweaks). Due to the highly specific nature of the embedded, we'll cover known configurations for boards here. If your machine is not listed, then you should visit the respective community website to figure out how to properly configure your kernel. Please select your machine from the list below to jump to the configuration section. 1. NetWinder configuration options Remember that EXT2 support is required for the boot partition as that is the only filesystem that the bootloader can read reliably. Otherwise, the only filesystem that has been tested is EXT3 but your welcome to try your luck with the others ;).
When you've finished configuring the kernel, continue with Compiling and Installing. Now that your kernel is configured, it is time to compile and install it. Exit the configuration and start the compilation process:
When the kernel has finished compiling, copy the kernel image to /boot. Use whatever name you feel is appropriate for your kernel choice and remember it as you will need it later on when you configure your bootloader. Remember to replace ${kernel-name} with the name and version of your kernel.
Now continue with Kernel Modules. You should list the modules you want automatically loaded in /etc/modules.autoload.d/kernel-2.6. You can add extra options to the modules too if you want. To view all available modules, run the following find command. Don't forget to substitute "<kernel version>" with the version of the kernel you just compiled:
For instance, to automatically load the 3c59x.ko module, edit the kernel-2.6 file and enter the module name in it.
Continue the installation with (Configuring your System). |
|
