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-rw-r--r--meta/classes/bootimg.bbclass220
1 files changed, 150 insertions, 70 deletions
diff --git a/meta/classes/bootimg.bbclass b/meta/classes/bootimg.bbclass
index 37a59c2d7..370b3786f 100644
--- a/meta/classes/bootimg.bbclass
+++ b/meta/classes/bootimg.bbclass
@@ -1,112 +1,192 @@
-# bootimg.oeclass
# Copyright (C) 2004, Advanced Micro Devices, Inc. All Rights Reserved
# Released under the MIT license (see packages/COPYING)
-# This creates a bootable image using syslinux, your kernel and an optional
+# Creates a bootable image using syslinux, your kernel and an optional
# initrd
-# External variables needed
+#
+# End result is two things:
+#
+# 1. A .hddimg file which is an msdos filesystem containing syslinux, a kernel,
+# an initrd and a rootfs image. These can be written to harddisks directly and
+# also booted on USB flash disks (write them there with dd).
+#
+# 2. A CD .iso image
+
+# Boot process is that the initrd will boot and process which label was selected
+# in syslinux. Actions based on the label are then performed (e.g. installing to
+# an hdd)
+
+# External variables (also used by syslinux.bbclass)
# ${INITRD} - indicates a filesystem image to use as an initrd (optional)
-# ${AUTO_SYSLINUXCFG} - set this to 1 to enable creating an automatic config
-# ${LABELS} - a list of targets for the automatic config
-# ${APPEND} - an override list of append strings for each label
-# ${SYSLINUX_OPTS} - additional options to add to the syslinux file ';' delimited
+# ${NOISO} - skip building the ISO image if set to 1
+# ${ROOTFS} - indicates a filesystem image to include as the root filesystem (optional)
-do_bootimg[depends] += "dosfstools-native:do_populate_staging \
- syslinux:do_populate_staging \
- syslinux-installer-native:do_populate_staging \
- mtools-native:do_populate_staging \
- cdrtools-native:do_populate_staging"
+do_bootimg[depends] += "dosfstools-native:do_populate_sysroot \
+ mtools-native:do_populate_sysroot \
+ cdrtools-native:do_populate_sysroot"
PACKAGES = " "
+EXCLUDE_FROM_WORLD = "1"
-HDDDIR = "${S}/hdd/boot"
-ISODIR = "${S}/cd/isolinux"
+HDDDIR = "${S}/hddimg"
+ISODIR = "${S}/iso"
-BOOTIMG_VOLUME_ID ?= "oe"
+BOOTIMG_VOLUME_ID ?= "boot"
BOOTIMG_EXTRA_SPACE ?= "512"
-# Get the build_syslinux_cfg() function from the syslinux class
+EFI = "${@base_contains("MACHINE_FEATURES", "efi", "1", "0", d)}"
+EFI_CLASS = "${@base_contains("MACHINE_FEATURES", "efi", "grub-efi", "dummy", d)}"
+
+# Include legacy boot if MACHINE_FEATURES includes "pcbios" or if it does not
+# contain "efi". This way legacy is supported by default if neither is
+# specified, maintaining the original behavior.
+def pcbios(d):
+ pcbios = base_contains("MACHINE_FEATURES", "pcbios", "1", "0", d)
+ if pcbios == "0":
+ pcbios = base_contains("MACHINE_FEATURES", "efi", "0", "1", d)
+ return pcbios
+
+def pcbios_class(d):
+ if d.getVar("PCBIOS", True) == "1":
+ return "syslinux"
+ return "dummy"
-SYSLINUXCFG = "${HDDDIR}/syslinux.cfg"
-SYSLINUXMENU = "${HDDDIR}/menu"
+PCBIOS = "${@pcbios(d)}"
+PCBIOS_CLASS = "${@pcbios_class(d)}"
-inherit syslinux
-
-build_boot_bin() {
- install -d ${HDDDIR}
- install -m 0644 ${STAGING_DIR}/${MACHINE}${HOST_VENDOR}-${HOST_OS}/kernel/bzImage \
- ${HDDDIR}/vmlinuz
+inherit ${PCBIOS_CLASS}
+inherit ${EFI_CLASS}
- if [ -n "${INITRD}" ] && [ -s "${INITRD}" ]; then
- install -m 0644 ${INITRD} ${HDDDIR}/initrd
+populate() {
+ DEST=$1
+ install -d ${DEST}
+
+ # Install bzImage, initrd, and rootfs.img in DEST for all loaders to use.
+ install -m 0644 ${STAGING_DIR_HOST}/kernel/bzImage ${DEST}/vmlinuz
+
+ if [ -n "${INITRD}" ] && [ -s "${INITRD}" ]; then
+ install -m 0644 ${INITRD} ${DEST}/initrd
fi
- if [ -n "${ROOTFS}" ] && [ -s "${ROOTFS}" ]; then
- install -m 0644 ${ROOTFS} ${HDDDIR}/rootfs.img
+ if [ -n "${ROOTFS}" ] && [ -s "${ROOTFS}" ]; then
+ install -m 0644 ${ROOTFS} ${DEST}/rootfs.img
fi
- install -m 444 ${STAGING_DATADIR}/syslinux/ldlinux.sys \
- ${HDDDIR}/ldlinux.sys
+}
+
+build_iso() {
+ # Only create an ISO if we have an INITRD and NOISO was not set
+ if [ -z "${INITRD}" ] || [ ! -s "${INITRD}" ] || [ "${NOISO}" = "1" ]; then
+ bbnote "ISO image will not be created."
+ return
+ fi
- # Do a little math, bash style
- #BLOCKS=`du -s ${HDDDIR} | cut -f 1`
- BLOCKS=`du -bks ${HDDDIR} | cut -f 1`
- SIZE=`expr $BLOCKS + ${BOOTIMG_EXTRA_SPACE}`
+ populate ${ISODIR}
- mkdosfs -n ${BOOTIMG_VOLUME_ID} -d ${HDDDIR} \
- -C ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg $SIZE
+ if [ "${PCBIOS}" = "1" ]; then
+ syslinux_iso_populate
+ fi
+ if [ "${EFI}" = "1" ]; then
+ grubefi_iso_populate
+ fi
- syslinux ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg
- chmod 644 ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg
+ if [ "${PCBIOS}" = "1" ]; then
+ mkisofs -V ${BOOTIMG_VOLUME_ID} \
+ -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
+ -b ${ISO_BOOTIMG} -c ${ISO_BOOTCAT} -r \
+ ${MKISOFS_OPTIONS} ${ISODIR}
+ else
+ bbnote "EFI-only ISO images are untested, please provide feedback."
+ mkisofs -V ${BOOTIMG_VOLUME_ID} \
+ -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
+ -r ${ISODIR}
+ fi
+
+ isohybrid ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso
cd ${DEPLOY_DIR_IMAGE}
- rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hddimg
- ln -s ${IMAGE_NAME}.hddimg ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hddimg
-
- #Create an ISO if we have an INITRD
- if [ -n "${INITRD}" ] && [ -s "${INITRD}" ] && [ "${NOISO}" != "1" ] ; then
- install -d ${ISODIR}
+ rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.iso
+ ln -s ${IMAGE_NAME}.iso ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.iso
+}
- # Install the kernel
+build_hddimg() {
+ # Create an HDD image
+ if [ "${NOHDD}" != "1" ] ; then
+ populate ${HDDDIR}
- install -m 0644 ${STAGING_DIR}/${MACHINE}${HOST_VENDOR}-${HOST_OS}/kernel/bzImage \
- ${ISODIR}/vmlinuz
+ if [ "${PCBIOS}" = "1" ]; then
+ syslinux_hddimg_populate
+ fi
+ if [ "${EFI}" = "1" ]; then
+ grubefi_hddimg_populate
+ fi
- # Install the configuration files
+ # Calculate the size required for the final image including the
+ # data and filesystem overhead.
+ # Sectors: 512 bytes
+ # Blocks: 1024 bytes
- cp ${HDDDIR}/syslinux.cfg ${ISODIR}/isolinux.cfg
+ # Determine the sector count just for the data
+ SECTORS=$(expr $(du --apparent-size -ks ${HDDDIR} | cut -f 1) \* 2)
- if [ -f ${SYSLINUXMENU} ]; then
- cp ${SYSLINUXMENU} ${ISODIR}
- fi
+ # Account for the filesystem overhead. This includes directory
+ # entries in the clusters as well as the FAT itself.
+ # Assumptions:
+ # FAT32 (12 or 16 may be selected by mkdosfs, but the extra
+ # padding will be minimal on those smaller images and not
+ # worth the logic here to caclulate the smaller FAT sizes)
+ # < 16 entries per directory
+ # 8.3 filenames only
- install -m 0644 ${INITRD} ${ISODIR}/initrd
+ # 32 bytes per dir entry
+ DIR_BYTES=$(expr $(find ${HDDDIR} | tail -n +2 | wc -l) \* 32)
+ # 32 bytes for every end-of-directory dir entry
+ DIR_BYTES=$(expr $DIR_BYTES + $(expr $(find ${HDDDIR} -type d | tail -n +2 | wc -l) \* 32))
+ # 4 bytes per FAT entry per sector of data
+ FAT_BYTES=$(expr $SECTORS \* 4)
+ # 4 bytes per FAT entry per end-of-cluster list
+ FAT_BYTES=$(expr $FAT_BYTES + $(expr $(find ${HDDDIR} -type d | tail -n +2 | wc -l) \* 4))
- if [ -n "${ROOTFS}" ] && [ -s "${ROOTFS}" ]; then
- install -m 0644 ${ROOTFS} ${ISODIR}/rootfs.img
- fi
+ # Use a ceiling function to determine FS overhead in sectors
+ DIR_SECTORS=$(expr $(expr $DIR_BYTES + 511) / 512)
+ # There are two FATs on the image
+ FAT_SECTORS=$(expr $(expr $(expr $FAT_BYTES + 511) / 512) \* 2)
+ SECTORS=$(expr $SECTORS + $(expr $DIR_SECTORS + $FAT_SECTORS))
- # And install the syslinux stuff
- cp ${STAGING_DATADIR}/syslinux/isolinux.bin \
- ${ISODIR}
+ # Determine the final size in blocks accounting for some padding
+ BLOCKS=$(expr $(expr $SECTORS / 2) + ${BOOTIMG_EXTRA_SPACE})
- mkisofs -V ${BOOTIMG_VOLUME_ID} \
- -o ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.iso \
- -b isolinux/isolinux.bin -c isolinux/boot.cat -r \
- -no-emul-boot -boot-load-size 4 -boot-info-table \
- ${S}/cd/
+ # Ensure total sectors is an integral number of sectors per
+ # track or mcopy will complain. Sectors are 512 bytes, and we
+ # generate images with 32 sectors per track. This calculation is
+ # done in blocks, thus the mod by 16 instead of 32.
+ BLOCKS=$(expr $BLOCKS + $(expr 16 - $(expr $BLOCKS % 16)))
- cd ${DEPLOY_DIR_IMAGE}
- rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.iso
- ln -s ${IMAGE_NAME}.iso ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.iso
+ IMG=${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg
+ mkdosfs -n ${BOOTIMG_VOLUME_ID} -S 512 -C ${IMG} ${BLOCKS}
+ # Copy HDDDIR recursively into the image file directly
+ mcopy -i ${IMG} -s ${HDDDIR}/* ::/
+
+ if [ "${PCBIOS}" = "1" ]; then
+ syslinux_hddimg_install
+ fi
+ chmod 644 ${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.hddimg
+
+ cd ${DEPLOY_DIR_IMAGE}
+ rm -f ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hddimg
+ ln -s ${IMAGE_NAME}.hddimg ${DEPLOY_DIR_IMAGE}/${IMAGE_LINK_NAME}.hddimg
fi
-}
+}
python do_bootimg() {
- bb.build.exec_func('build_syslinux_cfg', d)
- bb.build.exec_func('build_boot_bin', d)
+ if d.getVar("PCBIOS", True) == "1":
+ bb.build.exec_func('build_syslinux_cfg', d)
+ if d.getVar("EFI", True) == "1":
+ bb.build.exec_func('build_grub_cfg', d)
+ bb.build.exec_func('build_hddimg', d)
+ bb.build.exec_func('build_iso', d)
}
addtask bootimg before do_build
generated by cgit v1.2.3 (git 2.51.0) at 2026-03-19 09:08:46 +0000