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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2010-06-25 22:02:28 (GMT)
committer Peter Korsgaard <jacmet@sunsite.dk>2010-06-26 05:44:16 (GMT)
commitc2a44f158eedf40be3ab3bc3c76f61fe032d7b34 (patch)
tree10f6e6eca350574febc2bf9aba1c808e47c1550b
parent93e801470981010d8760db372f511e04481182d0 (diff)
downloadbuildroot-c2a44f158eedf40be3ab3bc3c76f61fe032d7b34.tar.gz
buildroot-c2a44f158eedf40be3ab3bc3c76f61fe032d7b34.tar.bz2
initramfs: update help text
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
-rw-r--r--fs/initramfs/Config.in24
1 files changed, 13 insertions, 11 deletions
diff --git a/fs/initramfs/Config.in b/fs/initramfs/Config.in
index c76b2de..abb3c0c 100644
--- 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