On x86, and ELF image file may be stored as a coreboot payload. This image file may be a kernel or a kernel+initrd.
Documentation on this has been started on the coreboot wiki: http://www.coreboot.org/Mkelfimage We have seen success using the mkelfimage utility to construct a kernel+initrd image using the micro-image OpenEmbedded image as an initrd. http://www.se-eng.com/wiki/index.php/Open_Embedded_Setup To use, set a new type "elf" to IMAGE_FSTYPES in conf/local.conf on x86 targets: IMAGE_FSTYPES = "cpio.gz elf" You may also override the kernel parameters that are embedded in the elf file: IMAGE_KERNELPARAMS = "ramdisk_size=32768 root=/dev/ram0 rw console=" The image binary ${TMPDIR}/deploy/images/${MACHINE}/*.elf may be added to the coreboot configuration in Kconfig (CONFIG_PAYLOAD_FILE) Signed-off-by: Raymond Danks <[email protected]> --- v2: * Update commit summary and log. - Include test and usage steps. * Add Signed-off-by conf/bitbake.conf | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/conf/bitbake.conf b/conf/bitbake.conf index 66dfaba..1ab72e1 100644 --- a/conf/bitbake.conf +++ b/conf/bitbake.conf @@ -375,6 +375,7 @@ IMAGE_BASENAME = "${PN}" IMAGE_NAME = "${IMAGE_BASENAME}-${MACHINE}-${DATETIME}" IMAGE_LINK_NAME = "${IMAGE_BASENAME}-${MACHINE}" IMAGE_EXTRA_SPACE = 10240 +IMAGE_KERNELPARAMS = "ramdisk_size=32768 root=/dev/ram0 rw console=" UBI_VOLNAME ?= "${MACHINE}-rootfs" @@ -406,6 +407,7 @@ IMAGE_CMD_cpio.gz.u-boot = "type cpio >/dev/null; cd ${IMAGE_ROOTFS} && (find . 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}" IMAGE_CMD_ubi = "echo \[ubifs\] > ubinize.cfg ; echo mode=ubi >> ubinize.cfg ; echo image=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.ubifs.img >> ubinize.cfg ; echo vol_id=0 >> ubinize.cfg ; echo vol_type=dynamic >> ubinize.cfg ; echo vol_name=${UBI_VOLNAME} >> ubinize.cfg ; echo vol_flags=autoresize >> ubinize.cfg;mkfs.ubifs -r ${IMAGE_ROOTFS} -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.ubifs.img ${MKUBIFS_ARGS} && ubinize -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ubi ${UBINIZE_ARGS} ubinize.cfg" IMAGE_CMD_ubifs = "mkfs.ubifs -r ${IMAGE_ROOTFS} -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.ubifs.img ${MKUBIFS_ARGS}" +IMAGE_CMD_elf = "type cpio >/dev/null; cd ${IMAGE_ROOTFS} && (find . | cpio -o -H newc | gzip -c -9 >${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.gz) ; rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.elf ; mkelfImage --append='${IMAGE_KERNELPARAMS}' --kernel=${STAGING_DIR}/${MACHINE}${HOST_VENDOR}-${HOST_OS}/kernel/bzImage --initrd=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.cpio.gz --output=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.elf ${EXTRA_IMAGECMD}" EXTRA_IMAGECMD = "" EXTRA_IMAGECMD_jffs2 = "" @@ -440,6 +442,7 @@ IMAGE_DEPENDS_squashfs = "squashfs-tools-native" IMAGE_DEPENDS_squashfs-lzma = "squashfs-tools-native" IMAGE_DEPENDS_ubi = "mtd-utils-native" IMAGE_DEPENDS_ubifs = "mtd-utils-native" +IMAGE_DEPENDS_elf = "virtual/kernel mkelfimage-native" EXTRA_IMAGEDEPENDS = "" -- 1.7.0.4 _______________________________________________ Openembedded-devel mailing list [email protected] http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
