documentation/dev-manual/dev-manual-kernel-appendix.xml: partial edits.
still working on the kernel example. (From yocto-docs rev: 90c8cb778d3c146f24626a681f05b88bab1e9766) Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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</para>
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</section>
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<section id='is-vfat-supported'>
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<title>Is VFAT Supported?</title>
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<para>
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<literallayout class='monospaced'>
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I entered runqemu qemux86 and it fires upthis fires up the emulator and uses the
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image and filesystem in the build area created in the previous section.
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Then I copied over a pre-created and formated 5.2MB VFAT file named vfat.img.
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I did this with scp vfat.img root@192.168.7.2:
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The file is in the root directory.
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I had to do this because the mkfs.vfat vfat.img command does not work.
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mkfs is not recognized in the qemu terminal session.
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when I try mount -o loop -t vfat vfat.img mnt/ I get the error
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mount: can't set up loop device: No space left on device.
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This error is because the loop module is not currently in the kernel image.
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However, this module is available in the
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build area in the tarball modules-2.6.37.6-yocto-starndard+-20-qemux86.tgz.
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You can add this to the kernel image by adding the
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IMAGE_INSTALL += " kernel-module-loop" statement at the top of the local.conf
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file in the build area and then rebuilding the kernel using bitbake.
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It should just build whatever is necessary and not go through an entire build again.
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The <filename>menuconfig</filename> tool provides an interactive method with which
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to set kernel configurations.
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In order to use <filename>menuconfig</filename> from within the BitBake environment
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you need to source an environment setup script.
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This script is located in the local Yocto Project file structure and is called
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<filename>oe-init-build-env</filename>.
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</para>
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<para>
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The following command sets up the environment:
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<literallayout class='monospaced'>
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$ cd ~/poky
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$ source oe-init-build-env
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$ runqemu qemux86
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Continuing with the following parameters:
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KERNEL: [/home/scottrif/poky/build/tmp/deploy/images/bzImage-qemux86.bin]
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ROOTFS: [/home/scottrif/poky/build/tmp/deploy/images/core-image-sato-qemux86.ext3]
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FSTYPE: [ext3]
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Setting up tap interface under sudo
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Acquiring lockfile for tap0...
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WARNING: distccd not present, no distcc support loaded.
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Running qemu...
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/home/scottrif/poky/build/tmp/sysroots/x86_64-linux/usr/bin/qemu
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-kernel /home/scottrif/poky/build/tmp/deploy/images/bzImage-qemux86.bin
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-net nic,vlan=0 -net tap,vlan=0,ifname=tap0,script=no,downscript=no
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-hda /home/scottrif/poky/build/tmp/deploy/images/core-image-sato-qemux86.ext3
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-show-cursor -usb -usbdevice wacom-tablet -vga vmware -enable-gl -no-reboot
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-m 128 --append "vga=0 root=/dev/hda rw mem=128M ip=192.168.7.2::192.168.7.1:255.255.255.0 oprofile.timer=1 "
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Enabling opengl
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vmsvga_value_write: guest runs Linux.
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</literallayout>
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</para>
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</section>
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<section id='prepare-to-use-menuconfig'>
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<title>Prepare to use <filename>menuconfig</filename></title>
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