Apologies, this should have gone to oe-core :/
I will forward there.
On 12/28/2011 03:45 PM, Darren Hart wrote:
> In order for the kernel to accept an initramfs as a rootfs,
> it must have /init - even if it is an empty file. Touch /init
> to ensure it exists for cpio and cpio.gz image types.
>
> When used with initrd and rootfs=/dev/ram0, this allows the
> cpio and cpio.gz images to be used as the rootfs.
>
> Signed-off-by: Darren Hart <dvh...@linux.intel.com>
> ---
> meta/classes/image_types.bbclass | 10 ++++++++--
> 1 files changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/meta/classes/image_types.bbclass
> b/meta/classes/image_types.bbclass
> index 6893e38..ebff0ba 100644
> --- a/meta/classes/image_types.bbclass
> +++ b/meta/classes/image_types.bbclass
> @@ -110,8 +110,14 @@ IMAGE_CMD_tar = "cd ${IMAGE_ROOTFS} && tar -cvf
> ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME
> IMAGE_CMD_tar.gz = "cd ${IMAGE_ROOTFS} && tar -zcvf
> ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.tar.gz ."
> IMAGE_CMD_tar.bz2 = "cd ${IMAGE_ROOTFS} && tar -jcvf
> ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.tar.bz2 ."
> IMAGE_CMD_tar.xz = "cd ${IMAGE_ROOTFS} && tar --xz -cvf
> ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.tar.xz ."
> -IMAGE_CMD_cpio = "cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc
> >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio)"
> -IMAGE_CMD_cpio.gz = "cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | gzip
> -c -9 >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.gz)"
> +IMAGE_CMD_cpio () {
> + touch ${IMAGE_ROOTFS}/init
> + cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc
> >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio)
> +}
> +IMAGE_CMD_cpio.gz () {
> + touch ${IMAGE_ROOTFS}/init
> + cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | gzip -c -9
> >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.gz)
> +}
> IMAGE_CMD_cpio.xz = "type cpio >/dev/null; cd ${IMAGE_ROOTFS} && (find . |
> cpio -o -H newc | xz -c ${XZ_COMPRESSION_LEVEL} --check=${XZ_INTEGRITY_CHECK}
> > ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.xz) ${EXTRA_IMAGECMD}"
> IMAGE_CMD_cpio.lzma = "type cpio >/dev/null; cd ${IMAGE_ROOTFS} && (find . |
> cpio -o -H newc | xz --format=lzma -c ${XZ_COMPRESSION_LEVEL}
> --check=${XZ_INTEGRITY_CHECK}
> >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.lzma) ${EXTRA_IMAGECMD}"
>
--
Darren Hart
Intel Open Source Technology Center
Yocto Project - Linux Kernel
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