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rootfs-cpio: add U-Boot image support

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Adds U-Boot image support for cpio root filesystems. This allows you to
use the bootm command in U-Boot to load the rootfs. It makes it possible to
verify the CRC of the initramfs before booting the kernel.

[Spenser: wrote first version of the patch.]
Signed-off-by: Spenser Gilliland <spenser@gillilanding.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Arnout Vandecappelle
2013-11-07 00:12:34 +01:00
committed by Peter Korsgaard
parent 4df9ecb30a
commit 3970ebf837
2 changed files with 33 additions and 1 deletions
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13
fs/cpio/Config.in
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@@ -5,10 +5,11 @@ config BR2_TARGET_ROOTFS_CPIO
used for an initial RAM filesystem that is passed to the kernel
by the bootloader.
if BR2_TARGET_ROOTFS_CPIO
choice
prompt "Compression method"
default BR2_TARGET_ROOTFS_CPIO_NONE
depends on BR2_TARGET_ROOTFS_CPIO
help
Select compressor for cpio filesystem of the root filesystem.
If you use the cpio archive as an initial RAM filesystem, make
@@ -47,3 +48,13 @@ config BR2_TARGET_ROOTFS_CPIO_XZ
endchoice
config BR2_TARGET_ROOTFS_CPIO_UIMAGE
bool "Create U-Boot image of the root filesystem"
select BR2_PACKAGE_HOST_UBOOT_TOOLS
help
Add a U-Boot header to the cpio root filesystem. This allows
the initramfs to be loaded with the bootm command in U-Boot.
The U-Boot image will be called rootfs.cpio.uboot
endif # BR2_TARGET_ROOTFS_CPIO