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@@ -2,17 +2,19 @@ config BR2_TARGET_ROOTFS_INITRAMFS
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bool "initramfs for initial ramdisk of linux kernel"
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depends on BR2_LINUX_KERNEL
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help
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- Build a file which is usable for the gen_init_cpio tool
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- at linux kernel build.
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- This file is normally called initramfs_list and can be
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- generated with gen_initramfs_list.sh script from the root
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- directory structure.
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- The file is then used in the kernel build process to generate
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- the cpio filesystem for the initial ramdisk. Make sure that
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- you configure this file in kernel build configuration.
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- The location in the kernel build configuration menu is
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- Device Drivers -> Block devices -> Initramfs source file(s).
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- The configuration variable is CONFIG_INITRAMFS_SOURCE
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+ Integrate the root filesystem generated by Buildroot as an
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+ initramfs inside the kernel image. This integration will
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+ take place automatically.
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+
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+ The rootfs.initramfs file generated in the images/ directory
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+ is only a text file describing the contents of the initramfs
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+ in a format understood by the CONFIG_INITRAMFS_SOURCE kernel
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+ configuration option.
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+
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+ Note that enabling initramfs together with other filesystem
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+ formats doesn't make sense: you would end up having two
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+ identical root filesystems, one embedded inside the kernel
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+ image, and one separatly.
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comment "initramfs requires a Linux kernel to be built"
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depends on !BR2_LINUX_KERNEL
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Thomas Petazzoni