initramfs: update help text

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

diff --git a/fs/initramfs/Config.in b/fs/initramfs/Config.in
index c76b2de12f69fdba1d62e103a656ac2fd2128a3b..abb3c0cc0318eeebc53bdcf6abaa2046802f830e 100644 (file)
--- a/fs/initramfs/Config.in
+++ b/fs/initramfs/Config.in
@@ -2,17 +2,19 @@ config BR2_TARGET_ROOTFS_INITRAMFS
        bool "initramfs for initial ramdisk of linux kernel"
        depends on BR2_LINUX_KERNEL
        help
-         Build a file which is usable for the gen_init_cpio tool
-         at linux kernel build.
-         This file is normally called initramfs_list and can be
-         generated with gen_initramfs_list.sh script from the root
-         directory structure.
-         The file is then used in the kernel build process to generate
-         the cpio filesystem for the initial ramdisk. Make sure that
-         you configure this file in kernel build configuration.
-         The location in the kernel build configuration menu is
-         Device Drivers -> Block devices -> Initramfs source file(s).
-         The configuration variable is CONFIG_INITRAMFS_SOURCE
+         Integrate the root filesystem generated by Buildroot as an
+         initramfs inside the kernel image. This integration will
+         take place automatically.
+
+         The rootfs.initramfs file generated in the images/ directory
+         is only a text file describing the contents of the initramfs
+         in a format understood by the CONFIG_INITRAMFS_SOURCE kernel
+         configuration option.
+
+         Note that enabling initramfs together with other filesystem
+         formats doesn't make sense: you would end up having two
+         identical root filesystems, one embedded inside the kernel
+         image, and one separatly.
 
 comment "initramfs requires a Linux kernel to be built"
        depends on !BR2_LINUX_KERNEL