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authorGeorge McCollister <george.mccollister@gmail.com>2016-05-26 08:55:16 -0500
committerRichard Purdie <richard.purdie@linuxfoundation.org>2016-08-10 10:45:33 +0100
commitb406a89935f148779569fa3770776e009dd51f13 (patch)
tree537f250e52a323e6f0787f0e46731cb25dc26d88
parent42d50e8f5f3a98e50a0f50473ebc83dc6347b634 (diff)
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kernel-fitimage: add initramfs support
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@gmail.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
-rw-r--r--meta/classes/kernel-fitimage.bbclass285
1 files changed, 189 insertions, 96 deletions
diff --git a/meta/classes/kernel-fitimage.bbclass b/meta/classes/kernel-fitimage.bbclass
index 7cca180363..f05d8a54b5 100644
--- a/meta/classes/kernel-fitimage.bbclass
+++ b/meta/classes/kernel-fitimage.bbclass
@@ -16,7 +16,7 @@ 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
@@ -32,8 +32,9 @@ 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/;
/ {
@@ -45,32 +46,33 @@ 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
;;
@@ -80,9 +82,10 @@ 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
+# $4 ... Compression type
fitimage_emit_section_kernel() {
kernel_csum="sha1"
@@ -90,17 +93,17 @@ fitimage_emit_section_kernel() {
ENTRYPOINT=${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@1 {
@@ -113,16 +116,17 @@ 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";
@@ -134,10 +138,39 @@ 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@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
+# $4 ... ramdisk ID
fitimage_emit_section_config() {
conf_csum="sha1"
@@ -146,21 +179,32 @@ fitimage_emit_section_config() {
fi
# Test if we have any DTBs at all
- if [ -z "${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 >> ${1}
default = "conf@1";
conf@1 {
description = "${conf_desc}";
${kernel_line}
${fdt_line}
+ ${ramdisk_line}
hash@1 {
algo = "${conf_csum}";
};
@@ -168,103 +212,137 @@ 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 >> ${1}
signature@1 {
algo = "${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() {
- cd ${B}
- if echo ${KERNEL_IMAGETYPES} | grep -wq "fitImage"; then
- kernelcount=1
- dtbcount=""
- rm -f fit-image.its arch/${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}" 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
- #
- # Step 3: Prepare a configurations section
- #
- fitimage_emit_section_maint confstart
+ # Force the first Kernel and DTB in the default config
+ kernelcount=1
+ dtbcount=1
- fitimage_emit_section_config ${kernelcount} ${dtbcount}
+ #
+ # Step 4: Prepare a configurations section
+ #
+ fitimage_emit_section_maint ${1} confstart
- fitimage_emit_section_maint sectend
+ fitimage_emit_section_config ${1} ${kernelcount} ${dtbcount} ${ramdiskcount}
- fitimage_emit_section_maint fitend
+ fitimage_emit_section_maint ${1} sectend
- #
- # Step 4: Assemble the image
- #
+ fitimage_emit_section_maint ${1} fitend
+
+ #
+ # 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 echo ${KERNEL_IMAGETYPES} | grep -wq "fitImage"; then
+ cd ${B}
+ fitimage_assemble fit-image.its fitImage
fi
}
addtask assemble_fitimage before do_install after do_compile
+do_assemble_fitimage_initramfs() {
+ if echo ${KERNEL_IMAGETYPES} | grep -wq "fitImage" && \
+ test -n "${INITRAMFS_IMAGE}" ; then
+ cd ${B}
+ fitimage_assemble fit-image-${INITRAMFS_IMAGE}.its fitImage-${INITRAMFS_IMAGE} 1
+ fi
+}
+
+addtask assemble_fitimage_initramfs before do_deploy after do_install
+
+
kernel_do_deploy[vardepsexclude] = "DATETIME"
kernel_do_deploy_append() {
# Update deploy directory
@@ -278,8 +356,23 @@ kernel_do_deploy_append() {
linux_bin_symlink_name=fitImage-linux.bin-${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
}