[OE-core] [PATCH v2] kernel-fitimage: add initramfs support
George McCollister
george.mccollister at gmail.com
Thu May 26 13:55:16 UTC 2016
If INITRAMFS_IMAGE is set, build an additional fitImage containing the
initramfs. Copy the additional fitImage and the source .its file used to
create it to DEPLOYDIR. The fitImage containing the initramfs must be
built before do_deploy and after do_install to avoid circular dependencies.
UBOOT_RD_LOADADDRESS - Specifies the load address used by u-boot for the
initramfs.
UBOOT_RD_ENTRYPOINT - Specifies the entry point used by u-boot for the
initramfs.
Signed-off-by: George McCollister <george.mccollister at gmail.com>
---
meta/classes/kernel-fitimage.bbclass | 280 +++++++++++++++++++++++------------
1 file changed, 185 insertions(+), 95 deletions(-)
diff --git a/meta/classes/kernel-fitimage.bbclass b/meta/classes/kernel-fitimage.bbclass
index 298eda2..65e0ee3 100644
--- a/meta/classes/kernel-fitimage.bbclass
+++ b/meta/classes/kernel-fitimage.bbclass
@@ -14,7 +14,7 @@ python __anonymous () {
image = d.getVar('INITRAMFS_IMAGE', True)
if image:
- d.appendVarFlag('do_assemble_fitimage', 'depends', ' ${INITRAMFS_IMAGE}:do_image_complete')
+ d.appendVarFlag('do_assemble_fitimage_initramfs', 'depends', ' ${INITRAMFS_IMAGE}:do_image_complete')
# Verified boot will sign the fitImage and append the public key to
# U-boot dtb. We ensure the U-Boot dtb is deployed before assembling
@@ -30,8 +30,9 @@ UBOOT_MKIMAGE_DTCOPTS ??= ""
#
# Emit the fitImage ITS header
#
+# $1 ... .its filename
fitimage_emit_fit_header() {
- cat << EOF >> fit-image.its
+ cat << EOF >> ${1}
/dts-v1/;
/ {
@@ -43,32 +44,33 @@ EOF
#
# Emit the fitImage section bits
#
-# $1 ... Section bit type: imagestart - image section start
+# $1 ... .its filename
+# $2 ... Section bit type: imagestart - image section start
# confstart - configuration section start
# sectend - section end
# fitend - fitimage end
#
fitimage_emit_section_maint() {
- case $1 in
+ case $2 in
imagestart)
- cat << EOF >> fit-image.its
+ cat << EOF >> ${1}
images {
EOF
;;
confstart)
- cat << EOF >> fit-image.its
+ cat << EOF >> ${1}
configurations {
EOF
;;
sectend)
- cat << EOF >> fit-image.its
+ cat << EOF >> ${1}
};
EOF
;;
fitend)
- cat << EOF >> fit-image.its
+ cat << EOF >> ${1}
};
EOF
;;
@@ -78,9 +80,10 @@ EOF
#
# Emit the fitImage ITS kernel section
#
-# $1 ... Image counter
-# $2 ... Path to kernel image
-# $3 ... Compression type
+# $1 ... .its filename
+# $2 ... Image counter
+# $3 ... Path to kernel image
+# $4 ... Compression type
fitimage_emit_section_kernel() {
kernel_csum="sha1"
@@ -88,17 +91,17 @@ fitimage_emit_section_kernel() {
ENTRYPOINT=${UBOOT_ENTRYPOINT}
if test -n "${UBOOT_ENTRYSYMBOL}"; then
ENTRYPOINT=`${HOST_PREFIX}nm ${S}/vmlinux | \
- awk '$3=="${UBOOT_ENTRYSYMBOL}" {print $1}'`
+ awk '$4=="${UBOOT_ENTRYSYMBOL}" {print $2}'`
fi
- cat << EOF >> fit-image.its
- kernel@${1} {
+ cat << EOF >> ${1}
+ kernel@${2} {
description = "Linux kernel";
- data = /incbin/("${2}");
+ data = /incbin/("${3}");
type = "kernel";
arch = "${UBOOT_ARCH}";
os = "linux";
- compression = "${3}";
+ compression = "${4}";
load = <${UBOOT_LOADADDRESS}>;
entry = <${ENTRYPOINT}>;
hash at 1 {
@@ -111,16 +114,17 @@ EOF
#
# Emit the fitImage ITS DTB section
#
-# $1 ... Image counter
-# $2 ... Path to DTB image
+# $1 ... .its filename
+# $2 ... Image counter
+# $3 ... Path to DTB image
fitimage_emit_section_dtb() {
dtb_csum="sha1"
- cat << EOF >> fit-image.its
- fdt@${1} {
+ cat << EOF >> ${1}
+ fdt@${2} {
description = "Flattened Device Tree blob";
- data = /incbin/("${2}");
+ data = /incbin/("${3}");
type = "flat_dt";
arch = "${UBOOT_ARCH}";
compression = "none";
@@ -132,10 +136,39 @@ EOF
}
#
+# Emit the fitImage ITS ramdisk section
+#
+# $1 ... .its filename
+# $2 ... Image counter
+# $3 ... Path to ramdisk image
+fitimage_emit_section_ramdisk() {
+
+ ramdisk_csum="sha1"
+
+ cat << EOF >> ${1}
+ ramdisk@${2} {
+ description = "ramdisk image";
+ data = /incbin/("${3}");
+ type = "ramdisk";
+ arch = "${UBOOT_ARCH}";
+ os = "linux";
+ compression = "none";
+ load = <${UBOOT_RD_LOADADDRESS}>;
+ entry = <${UBOOT_RD_ENTRYPOINT}>;
+ hash at 1 {
+ algo = "${ramdisk_csum}";
+ };
+ };
+EOF
+}
+
+#
# Emit the fitImage ITS configuration section
#
-# $1 ... Linux kernel ID
-# $2 ... DTB image ID
+# $1 ... .its filename
+# $2 ... Linux kernel ID
+# $3 ... DTB image ID
+# $4 ... ramdisk ID
fitimage_emit_section_config() {
conf_csum="sha1"
@@ -144,21 +177,32 @@ fitimage_emit_section_config() {
fi
# Test if we have any DTBs at all
- if [ -z "${2}" ] ; then
+ if [ -z "${3}" -a -z "${4}" ] ; then
conf_desc="Boot Linux kernel"
fdt_line=""
- else
+ ramdisk_line=""
+ elif [ -z "${4}" ]; then
conf_desc="Boot Linux kernel with FDT blob"
- fdt_line="fdt = \"fdt@${2}\";"
+ fdt_line="fdt = \"fdt@${3}\";"
+ ramdisk_line=""
+ elif [ -z "${3}" ]; then
+ conf_desc="Boot Linux kernel with ramdisk"
+ fdt_line=""
+ ramdisk_line="ramdisk = \"ramdisk@${4}\";"
+ else
+ conf_desc="Boot Linux kernel with FDT blob, ramdisk"
+ fdt_line="fdt = \"fdt@${3}\";"
+ ramdisk_line="ramdisk = \"ramdisk@${4}\";"
fi
- kernel_line="kernel = \"kernel@${1}\";"
+ kernel_line="kernel = \"kernel@${2}\";"
- cat << EOF >> fit-image.its
+ cat << EOF >> ${1}
default = "conf at 1";
conf at 1 {
description = "${conf_desc}";
${kernel_line}
${fdt_line}
+ ${ramdisk_line}
hash at 1 {
algo = "${conf_csum}";
};
@@ -166,102 +210,133 @@ EOF
if [ ! -z "${conf_sign_keyname}" ] ; then
- if [ -z "${2}" ] ; then
+ if [ -z "${3}" -a -z "${4}" ] ; then
sign_line="sign-images = \"kernel\";"
- else
+ elif [ -z "${4}" ]; then
sign_line="sign-images = \"fdt\", \"kernel\";"
+ elif [ -z "${3}" ]; then
+ sign_line="sign-images = \"ramdisk\", \"kernel\";"
+ else
+ sign_line="sign-images = \"ramdisk\", \"fdt\", \"kernel\";"
fi
- cat << EOF >> fit-image.its
+ cat << EOF >> ${1}
signature at 1 {
algo = "${conf_csum},rsa2048";
key-name-hint = "${conf_sign_keyname}";
- sign-images = "fdt", "kernel";
+ ${sign_line}
};
EOF
fi
- cat << EOF >> fit-image.its
+ cat << EOF >> ${1}
};
EOF
}
-do_assemble_fitimage() {
- if test "x${KERNEL_IMAGETYPE}" = "xfitImage" ; then
- kernelcount=1
- dtbcount=""
- rm -f fit-image.its arch/${ARCH}/boot/fitImage
-
- fitimage_emit_fit_header
-
- #
- # Step 1: Prepare a kernel image section.
- #
- fitimage_emit_section_maint imagestart
-
- uboot_prep_kimage
- fitimage_emit_section_kernel "${kernelcount}" linux.bin "${linux_comp}"
-
- #
- # Step 2: Prepare a DTB image section
- #
- if test -n "${KERNEL_DEVICETREE}"; then
- dtbcount=1
- for DTB in ${KERNEL_DEVICETREE}; do
- if echo ${DTB} | grep -q '/dts/'; then
- bbwarn "${DTB} contains the full path to the the dts file, but only the dtb name should be used."
- DTB=`basename ${DTB} | sed 's,\.dts$,.dtb,g'`
- fi
- DTB_PATH="arch/${ARCH}/boot/dts/${DTB}"
- if [ ! -e "${DTB_PATH}" ]; then
- DTB_PATH="arch/${ARCH}/boot/${DTB}"
- fi
-
- fitimage_emit_section_dtb ${dtbcount} ${DTB_PATH}
- dtbcount=`expr ${dtbcount} + 1`
- done
- fi
+#
+# Assemble fitImage
+#
+# $1 ... .its filename
+# $2 ... fitImage name
+# $3 ... include ramdisk
+fitimage_assemble() {
+ kernelcount=1
+ dtbcount=""
+ ramdiskcount=${3}
+ rm -f ${1} arch/${ARCH}/boot/${2}
+
+ fitimage_emit_fit_header ${1}
+
+ #
+ # Step 1: Prepare a kernel image section.
+ #
+ fitimage_emit_section_maint ${1} imagestart
+
+ uboot_prep_kimage
+ fitimage_emit_section_kernel ${1} "${kernelcount}" linux.bin "${linux_comp}"
+
+ #
+ # Step 2: Prepare a DTB image section
+ #
+ if test -n "${KERNEL_DEVICETREE}"; then
+ dtbcount=1
+ for DTB in ${KERNEL_DEVICETREE}; do
+ if echo ${DTB} | grep -q '/dts/'; then
+ bbwarn "${DTB} contains the full path to the the dts file, but only the dtb name should be used."
+ DTB=`basename ${DTB} | sed 's,\.dts$,.dtb,g'`
+ fi
+ DTB_PATH="arch/${ARCH}/boot/dts/${DTB}"
+ if [ ! -e "${DTB_PATH}" ]; then
+ DTB_PATH="arch/${ARCH}/boot/${DTB}"
+ fi
+
+ fitimage_emit_section_dtb ${1} ${dtbcount} ${DTB_PATH}
+ dtbcount=`expr ${dtbcount} + 1`
+ done
+ fi
- fitimage_emit_section_maint sectend
+ #
+ # Step 3: Prepare a ramdisk section.
+ #
+ if [ "x${ramdiskcount}" = "x1" ] ; then
+ copy_initramfs
+ fitimage_emit_section_ramdisk ${1} "${ramdiskcount}" ${B}/usr/${INITRAMFS_IMAGE}-${MACHINE}.cpio
+ fi
- # Force the first Kernel and DTB in the default config
- kernelcount=1
- dtbcount=1
+ fitimage_emit_section_maint ${1} sectend
+
+ # Force the first Kernel and DTB in the default config
+ kernelcount=1
+ dtbcount=1
- #
- # Step 3: Prepare a configurations section
- #
- fitimage_emit_section_maint confstart
+ #
+ # Step 4: Prepare a configurations section
+ #
+ fitimage_emit_section_maint ${1} confstart
- fitimage_emit_section_config ${kernelcount} ${dtbcount}
+ fitimage_emit_section_config ${1} ${kernelcount} ${dtbcount} ${ramdiskcount}
- fitimage_emit_section_maint sectend
+ fitimage_emit_section_maint ${1} sectend
- fitimage_emit_section_maint fitend
+ fitimage_emit_section_maint ${1} fitend
- #
- # Step 4: Assemble the image
- #
+ #
+ # Step 5: Assemble the image
+ #
+ uboot-mkimage \
+ ${@'-D "${UBOOT_MKIMAGE_DTCOPTS}"' if len('${UBOOT_MKIMAGE_DTCOPTS}') else ''} \
+ -f ${1} \
+ arch/${ARCH}/boot/${2}
+
+ #
+ # Step 6: Sign the image and add public key to U-Boot dtb
+ #
+ if [ "x${UBOOT_SIGN_ENABLE}" = "x1" ] ; then
uboot-mkimage \
${@'-D "${UBOOT_MKIMAGE_DTCOPTS}"' if len('${UBOOT_MKIMAGE_DTCOPTS}') else ''} \
- -f fit-image.its \
- arch/${ARCH}/boot/fitImage
-
- #
- # Step 5: Sign the image and add public key to U-Boot dtb
- #
- if [ "x${UBOOT_SIGN_ENABLE}" = "x1" ] ; then
- uboot-mkimage \
- ${@'-D "${UBOOT_MKIMAGE_DTCOPTS}"' if len('${UBOOT_MKIMAGE_DTCOPTS}') else ''} \
- -F -k "${UBOOT_SIGN_KEYDIR}" \
- -K "${DEPLOY_DIR_IMAGE}/${UBOOT_DTB_BINARY}" \
- -r arch/${ARCH}/boot/fitImage
- fi
+ -F -k "${UBOOT_SIGN_KEYDIR}" \
+ -K "${DEPLOY_DIR_IMAGE}/${UBOOT_DTB_BINARY}" \
+ -r arch/${ARCH}/boot/${2}
+ fi
+}
+
+do_assemble_fitimage() {
+ if test "x${KERNEL_IMAGETYPE}" = "xfitImage" ; then
+ fitimage_assemble fit-image.its fitImage
fi
}
addtask assemble_fitimage before do_install after do_compile
+do_assemble_fitimage_initramfs() {
+ if test "x${KERNEL_IMAGETYPE}" = "xfitImage" -a -n "${INITRAMFS_IMAGE}" ; then
+ fitimage_assemble fit-image-${INITRAMFS_IMAGE}.its fitImage-${INITRAMFS_IMAGE} 1
+ fi
+}
+
+addtask assemble_fitimage_initramfs before do_deploy after do_install
+
kernel_do_deploy[vardepsexclude] = "DATETIME"
kernel_do_deploy_append() {
# Update deploy directory
@@ -275,8 +350,23 @@ kernel_do_deploy_append() {
linux_bin_symlink_name=${KERNEL_IMAGETYPE}-linux.bin-${MACHINE}
install -m 0644 linux.bin ${DEPLOYDIR}/${linux_bin_base_name}.bin
+ if [ -n "${INITRAMFS_IMAGE}" ]; then
+ echo "Copying fit-image-${INITRAMFS_IMAGE}.its source file..."
+ its_initramfs_base_name="${KERNEL_IMAGETYPE}-its-${INITRAMFS_IMAGE}-${PV}-${PR}-${MACHINE}-${DATETIME}"
+ its_initramfs_symlink_name=${KERNEL_IMAGETYPE}-its-${INITRAMFS_IMAGE}-${MACHINE}
+ install -m 0644 fit-image-${INITRAMFS_IMAGE}.its ${DEPLOYDIR}/${its_initramfs_base_name}.its
+ fit_initramfs_base_name="${KERNEL_IMAGETYPE}-${INITRAMFS_IMAGE}-${PV}-${PR}-${MACHINE}-${DATETIME}"
+ fit_initramfs_symlink_name=${KERNEL_IMAGETYPE}-${INITRAMFS_IMAGE}-${MACHINE}
+ install -m 0644 arch/${ARCH}/boot/fitImage-${INITRAMFS_IMAGE} ${DEPLOYDIR}/${fit_initramfs_base_name}.bin
+ fi
+
cd ${DEPLOYDIR}
ln -sf ${its_base_name}.its ${its_symlink_name}.its
ln -sf ${linux_bin_base_name}.bin ${linux_bin_symlink_name}.bin
+
+ if [ -n "${INITRAMFS_IMAGE}" ]; then
+ ln -sf ${its_initramfs_base_name}.its ${its_initramfs_symlink_name}.its
+ ln -sf ${fit_initramfs_base_name}.bin ${fit_initramfs_symlink_name}.bin
+ fi
fi
}
--
2.8.0
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