January 2018
Intermediate to advanced
456 pages
12h 49m
English
Content preview from Embedded Linux Development Using Yocto Project Cookbook - Second Edition
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How it works...
In order for the Yocto build system to build a cpio image file suitable to be used as initramfs, the IMAGE_FSTYPES variable needs to be configured to one of the following: cpio.gz, cpio.tar, cpio.lz4, cpio.lzma, or cpio.xz.
On the previous image, IMAGE_FSTYPES is set to cpio.gz.uboot so that the build system generates a compressed cpio image file with the u-boot header, suitable to be loaded through the bootz u-boot command.
INITRAMFS_FSTYPES defaults to cpio.gz, and needs to be appended to support any other format.
In this recipe, we are overriding the PACKAGE_INSTALL variable with the list of packages we want to install. We also add ROOTFS_BOOTSTRAP_INSTALL, which adds the run-postinstall package so that post installation ...
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