1# 2# Copyright OpenEmbedded Contributors 3# 4# SPDX-License-Identifier: MIT 5# 6 7inherit linux-kernel-base kernel-module-split 8 9COMPATIBLE_HOST = ".*-linux" 10 11KERNEL_PACKAGE_NAME ??= "kernel" 12KERNEL_DEPLOYSUBDIR ??= "${@ "" if (d.getVar("KERNEL_PACKAGE_NAME") == "kernel") else d.getVar("KERNEL_PACKAGE_NAME") }" 13 14PROVIDES += "virtual/kernel" 15DEPENDS += "virtual/${TARGET_PREFIX}binutils virtual/${TARGET_PREFIX}gcc kmod-native bc-native bison-native" 16DEPENDS += "${@bb.utils.contains("INITRAMFS_FSTYPES", "cpio.lzo", "lzop-native", "", d)}" 17DEPENDS += "${@bb.utils.contains("INITRAMFS_FSTYPES", "cpio.lz4", "lz4-native", "", d)}" 18DEPENDS += "${@bb.utils.contains("INITRAMFS_FSTYPES", "cpio.zst", "zstd-native", "", d)}" 19PACKAGE_WRITE_DEPS += "depmodwrapper-cross" 20 21do_deploy[depends] += "depmodwrapper-cross:do_populate_sysroot gzip-native:do_populate_sysroot" 22do_clean[depends] += "make-mod-scripts:do_clean" 23 24CVE_PRODUCT ?= "linux_kernel" 25 26S = "${STAGING_KERNEL_DIR}" 27B = "${WORKDIR}/build" 28KBUILD_OUTPUT = "${B}" 29OE_TERMINAL_EXPORTS += "KBUILD_OUTPUT" 30 31# we include gcc above, we dont need virtual/libc 32INHIBIT_DEFAULT_DEPS = "1" 33 34KERNEL_IMAGETYPE ?= "zImage" 35INITRAMFS_IMAGE ?= "" 36INITRAMFS_TASK ?= "" 37INITRAMFS_IMAGE_BUNDLE ?= "" 38INITRAMFS_DEPLOY_DIR_IMAGE ?= "${DEPLOY_DIR_IMAGE}" 39INITRAMFS_MULTICONFIG ?= "" 40 41# KERNEL_VERSION is extracted from source code. It is evaluated as 42# None for the first parsing, since the code has not been fetched. 43# After the code is fetched, it will be evaluated as real version 44# number and cause kernel to be rebuilt. To avoid this, make 45# KERNEL_VERSION_NAME and KERNEL_VERSION_PKG_NAME depend on 46# LINUX_VERSION which is a constant. 47KERNEL_VERSION_NAME = "${@d.getVar('KERNEL_VERSION') or ""}" 48KERNEL_VERSION_NAME[vardepvalue] = "${LINUX_VERSION}" 49KERNEL_VERSION_PKG_NAME = "${@legitimize_package_name(d.getVar('KERNEL_VERSION'))}" 50KERNEL_VERSION_PKG_NAME[vardepvalue] = "${LINUX_VERSION}" 51 52python __anonymous () { 53 pn = d.getVar("PN") 54 kpn = d.getVar("KERNEL_PACKAGE_NAME") 55 56 # XXX Remove this after bug 11905 is resolved 57 # FILES:${KERNEL_PACKAGE_NAME}-dev doesn't expand correctly 58 if kpn == pn: 59 bb.warn("Some packages (E.g. *-dev) might be missing due to " 60 "bug 11905 (variable KERNEL_PACKAGE_NAME == PN)") 61 62 # The default kernel recipe builds in a shared location defined by 63 # bitbake/distro confs: STAGING_KERNEL_DIR and STAGING_KERNEL_BUILDDIR. 64 # Set these variables to directories under ${WORKDIR} in alternate 65 # kernel recipes (I.e. where KERNEL_PACKAGE_NAME != kernel) so that they 66 # may build in parallel with the default kernel without clobbering. 67 if kpn != "kernel": 68 workdir = d.getVar("WORKDIR") 69 sourceDir = os.path.join(workdir, 'kernel-source') 70 artifactsDir = os.path.join(workdir, 'kernel-build-artifacts') 71 d.setVar("STAGING_KERNEL_DIR", sourceDir) 72 d.setVar("STAGING_KERNEL_BUILDDIR", artifactsDir) 73 74 # Merge KERNEL_IMAGETYPE and KERNEL_ALT_IMAGETYPE into KERNEL_IMAGETYPES 75 type = d.getVar('KERNEL_IMAGETYPE') or "" 76 alttype = d.getVar('KERNEL_ALT_IMAGETYPE') or "" 77 types = d.getVar('KERNEL_IMAGETYPES') or "" 78 if type not in types.split(): 79 types = (type + ' ' + types).strip() 80 if alttype not in types.split(): 81 types = (alttype + ' ' + types).strip() 82 d.setVar('KERNEL_IMAGETYPES', types) 83 84 # KERNEL_IMAGETYPES may contain a mixture of image types supported directly 85 # by the kernel build system and types which are created by post-processing 86 # the output of the kernel build system (e.g. compressing vmlinux -> 87 # vmlinux.gz in kernel_do_transform_kernel()). 88 # KERNEL_IMAGETYPE_FOR_MAKE should contain only image types supported 89 # directly by the kernel build system. 90 if not d.getVar('KERNEL_IMAGETYPE_FOR_MAKE'): 91 typeformake = set() 92 for type in types.split(): 93 if type == 'vmlinux.gz': 94 type = 'vmlinux' 95 typeformake.add(type) 96 97 d.setVar('KERNEL_IMAGETYPE_FOR_MAKE', ' '.join(sorted(typeformake))) 98 99 kname = d.getVar('KERNEL_PACKAGE_NAME') or "kernel" 100 imagedest = d.getVar('KERNEL_IMAGEDEST') 101 102 for type in types.split(): 103 if bb.data.inherits_class('nopackages', d): 104 continue 105 typelower = type.lower() 106 d.appendVar('PACKAGES', ' %s-image-%s' % (kname, typelower)) 107 d.setVar('FILES:' + kname + '-image-' + typelower, '/' + imagedest + '/' + type + '-${KERNEL_VERSION_NAME}' + ' /' + imagedest + '/' + type) 108 d.appendVar('RDEPENDS:%s-image' % kname, ' %s-image-%s (= ${EXTENDPKGV})' % (kname, typelower)) 109 splitmods = d.getVar("KERNEL_SPLIT_MODULES") 110 if splitmods != '1': 111 d.appendVar('RDEPENDS:%s-image' % kname, ' %s-modules (= ${EXTENDPKGV})' % kname) 112 d.appendVar('RDEPENDS:%s-image-%s' % (kname, typelower), ' %s-modules-${KERNEL_VERSION_PKG_NAME} (= ${EXTENDPKGV})' % kname) 113 d.setVar('PKG:%s-modules' % kname, '%s-modules-${KERNEL_VERSION_PKG_NAME}' % kname) 114 d.appendVar('RPROVIDES:%s-modules' % kname, '%s-modules-${KERNEL_VERSION_PKG_NAME}' % kname) 115 116 d.setVar('PKG:%s-image-%s' % (kname,typelower), '%s-image-%s-${KERNEL_VERSION_PKG_NAME}' % (kname, typelower)) 117 d.setVar('ALLOW_EMPTY:%s-image-%s' % (kname, typelower), '1') 118 d.prependVar('pkg_postinst:%s-image-%s' % (kname,typelower), """set +e 119if [ -n "$D" ]; then 120 ln -sf %s-${KERNEL_VERSION} $D/${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1 121else 122 ln -sf %s-${KERNEL_VERSION} ${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1 123 if [ $? -ne 0 ]; then 124 echo "Filesystem on ${KERNEL_IMAGEDEST}/ doesn't support symlinks, falling back to copied image (%s)." 125 install -m 0644 ${KERNEL_IMAGEDEST}/%s-${KERNEL_VERSION} ${KERNEL_IMAGEDEST}/%s 126 fi 127fi 128set -e 129""" % (type, type, type, type, type, type, type)) 130 d.setVar('pkg_postrm:%s-image-%s' % (kname,typelower), """set +e 131if [ -f "${KERNEL_IMAGEDEST}/%s" -o -L "${KERNEL_IMAGEDEST}/%s" ]; then 132 rm -f ${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1 133fi 134set -e 135""" % (type, type, type)) 136 137 138 image = d.getVar('INITRAMFS_IMAGE') 139 # If the INTIRAMFS_IMAGE is set but the INITRAMFS_IMAGE_BUNDLE is set to 0, 140 # the do_bundle_initramfs does nothing, but the INITRAMFS_IMAGE is built 141 # standalone for use by wic and other tools. 142 if image: 143 if d.getVar('INITRAMFS_MULTICONFIG'): 144 d.appendVarFlag('do_bundle_initramfs', 'mcdepends', ' mc::${INITRAMFS_MULTICONFIG}:${INITRAMFS_IMAGE}:do_image_complete') 145 else: 146 d.appendVarFlag('do_bundle_initramfs', 'depends', ' ${INITRAMFS_IMAGE}:do_image_complete') 147 if image and bb.utils.to_boolean(d.getVar('INITRAMFS_IMAGE_BUNDLE')): 148 bb.build.addtask('do_transform_bundled_initramfs', 'do_deploy', 'do_bundle_initramfs', d) 149 150 # NOTE: setting INITRAMFS_TASK is for backward compatibility 151 # The preferred method is to set INITRAMFS_IMAGE, because 152 # this INITRAMFS_TASK has circular dependency problems 153 # if the initramfs requires kernel modules 154 image_task = d.getVar('INITRAMFS_TASK') 155 if image_task: 156 d.appendVarFlag('do_configure', 'depends', ' ${INITRAMFS_TASK}') 157} 158 159# Here we pull in all various kernel image types which we support. 160# 161# In case you're wondering why kernel.bbclass inherits the other image 162# types instead of the other way around, the reason for that is to 163# maintain compatibility with various currently existing meta-layers. 164# By pulling in the various kernel image types here, we retain the 165# original behavior of kernel.bbclass, so no meta-layers should get 166# broken. 167# 168# KERNEL_CLASSES by default pulls in kernel-uimage.bbclass, since this 169# used to be the default behavior when only uImage was supported. This 170# variable can be appended by users who implement support for new kernel 171# image types. 172 173KERNEL_CLASSES ?= " kernel-uimage " 174inherit ${KERNEL_CLASSES} 175 176# Old style kernels may set ${S} = ${WORKDIR}/git for example 177# We need to move these over to STAGING_KERNEL_DIR. We can't just 178# create the symlink in advance as the git fetcher can't cope with 179# the symlink. 180do_unpack[cleandirs] += " ${S} ${STAGING_KERNEL_DIR} ${B} ${STAGING_KERNEL_BUILDDIR}" 181do_clean[cleandirs] += " ${S} ${STAGING_KERNEL_DIR} ${B} ${STAGING_KERNEL_BUILDDIR}" 182python do_symlink_kernsrc () { 183 s = d.getVar("S") 184 if s[-1] == '/': 185 # drop trailing slash, so that os.symlink(kernsrc, s) doesn't use s as directory name and fail 186 s=s[:-1] 187 kernsrc = d.getVar("STAGING_KERNEL_DIR") 188 if s != kernsrc: 189 bb.utils.mkdirhier(kernsrc) 190 bb.utils.remove(kernsrc, recurse=True) 191 if d.getVar("EXTERNALSRC"): 192 # With EXTERNALSRC S will not be wiped so we can symlink to it 193 os.symlink(s, kernsrc) 194 else: 195 import shutil 196 shutil.move(s, kernsrc) 197 os.symlink(kernsrc, s) 198} 199# do_patch is normally ordered before do_configure, but 200# externalsrc.bbclass deletes do_patch, breaking the dependency of 201# do_configure on do_symlink_kernsrc. 202addtask symlink_kernsrc before do_patch do_configure after do_unpack 203 204inherit kernel-arch deploy 205 206PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-module-.*" 207PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-image-.*" 208PACKAGES_DYNAMIC += "^${KERNEL_PACKAGE_NAME}-firmware-.*" 209 210export OS = "${TARGET_OS}" 211export CROSS_COMPILE = "${TARGET_PREFIX}" 212 213KERNEL_RELEASE ?= "${KERNEL_VERSION}" 214 215# The directory where built kernel lies in the kernel tree 216KERNEL_OUTPUT_DIR ?= "arch/${ARCH}/boot" 217KERNEL_IMAGEDEST ?= "boot" 218KERNEL_DTBDEST ?= "${KERNEL_IMAGEDEST}" 219KERNEL_DTBVENDORED ?= "0" 220 221# 222# configuration 223# 224export CMDLINE_CONSOLE = "console=${@d.getVar("KERNEL_CONSOLE") or "ttyS0"}" 225 226KERNEL_VERSION = "${@get_kernelversion_headers('${B}')}" 227 228# kernels are generally machine specific 229PACKAGE_ARCH = "${MACHINE_ARCH}" 230 231# U-Boot support 232UBOOT_ENTRYPOINT ?= "20008000" 233UBOOT_LOADADDRESS ?= "${UBOOT_ENTRYPOINT}" 234 235# Some Linux kernel configurations need additional parameters on the command line 236KERNEL_EXTRA_ARGS ?= "" 237 238EXTRA_OEMAKE += ' CC="${KERNEL_CC}" LD="${KERNEL_LD}" OBJCOPY="${KERNEL_OBJCOPY}" STRIP="${KERNEL_STRIP}"' 239EXTRA_OEMAKE += ' HOSTCC="${BUILD_CC}" HOSTCFLAGS="${BUILD_CFLAGS}" HOSTLDFLAGS="${BUILD_LDFLAGS}" HOSTCPP="${BUILD_CPP}"' 240EXTRA_OEMAKE += ' HOSTCXX="${BUILD_CXX}" HOSTCXXFLAGS="${BUILD_CXXFLAGS}"' 241 242KERNEL_ALT_IMAGETYPE ??= "" 243 244copy_initramfs() { 245 echo "Copying initramfs into ./usr ..." 246 # In case the directory is not created yet from the first pass compile: 247 mkdir -p ${B}/usr 248 # Find and use the first initramfs image archive type we find 249 rm -f ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio 250 for img in cpio cpio.gz cpio.lz4 cpio.lzo cpio.lzma cpio.xz cpio.zst; do 251 if [ -e "${INITRAMFS_DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.$img" ]; then 252 cp ${INITRAMFS_DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.$img ${B}/usr/. 253 case $img in 254 *gz) 255 echo "gzip decompressing image" 256 gunzip -f ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img 257 break 258 ;; 259 *lz4) 260 echo "lz4 decompressing image" 261 lz4 -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio 262 break 263 ;; 264 *lzo) 265 echo "lzo decompressing image" 266 lzop -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img 267 break 268 ;; 269 *lzma) 270 echo "lzma decompressing image" 271 lzma -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img 272 break 273 ;; 274 *xz) 275 echo "xz decompressing image" 276 xz -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img 277 break 278 ;; 279 *zst) 280 echo "zst decompressing image" 281 zstd -df ${B}/usr/${INITRAMFS_IMAGE_NAME}.$img 282 break 283 ;; 284 esac 285 break 286 fi 287 done 288 # Verify that the above loop found a initramfs, fail otherwise 289 [ -f ${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio ] && echo "Finished copy of initramfs into ./usr" || die "Could not find any ${INITRAMFS_DEPLOY_DIR_IMAGE}/${INITRAMFS_IMAGE_NAME}.cpio{.gz|.lz4|.lzo|.lzma|.xz|.zst) for bundling; INITRAMFS_IMAGE_NAME might be wrong." 290} 291 292do_bundle_initramfs () { 293 if [ ! -z "${INITRAMFS_IMAGE}" -a x"${INITRAMFS_IMAGE_BUNDLE}" = x1 ]; then 294 echo "Creating a kernel image with a bundled initramfs..." 295 copy_initramfs 296 # Backing up kernel image relies on its type(regular file or symbolic link) 297 tmp_path="" 298 for imageType in ${KERNEL_IMAGETYPE_FOR_MAKE} ; do 299 if [ -h ${KERNEL_OUTPUT_DIR}/$imageType ] ; then 300 linkpath=`readlink -n ${KERNEL_OUTPUT_DIR}/$imageType` 301 realpath=`readlink -fn ${KERNEL_OUTPUT_DIR}/$imageType` 302 mv -f $realpath $realpath.bak 303 tmp_path=$tmp_path" "$imageType"#"$linkpath"#"$realpath 304 elif [ -f ${KERNEL_OUTPUT_DIR}/$imageType ]; then 305 mv -f ${KERNEL_OUTPUT_DIR}/$imageType ${KERNEL_OUTPUT_DIR}/$imageType.bak 306 tmp_path=$tmp_path" "$imageType"##" 307 fi 308 done 309 use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio 310 kernel_do_compile 311 # Restoring kernel image 312 for tp in $tmp_path ; do 313 imageType=`echo $tp|cut -d "#" -f 1` 314 linkpath=`echo $tp|cut -d "#" -f 2` 315 realpath=`echo $tp|cut -d "#" -f 3` 316 if [ -n "$realpath" ]; then 317 mv -f $realpath $realpath.initramfs 318 mv -f $realpath.bak $realpath 319 ln -sf $linkpath.initramfs ${B}/${KERNEL_OUTPUT_DIR}/$imageType.initramfs 320 else 321 mv -f ${KERNEL_OUTPUT_DIR}/$imageType ${KERNEL_OUTPUT_DIR}/$imageType.initramfs 322 mv -f ${KERNEL_OUTPUT_DIR}/$imageType.bak ${KERNEL_OUTPUT_DIR}/$imageType 323 fi 324 done 325 fi 326} 327do_bundle_initramfs[dirs] = "${B}" 328 329kernel_do_transform_bundled_initramfs() { 330 # vmlinux.gz is not built by kernel 331 if (echo "${KERNEL_IMAGETYPES}" | grep -wq "vmlinux\.gz"); then 332 gzip -9cn < ${KERNEL_OUTPUT_DIR}/vmlinux.initramfs > ${KERNEL_OUTPUT_DIR}/vmlinux.gz.initramfs 333 fi 334} 335do_transform_bundled_initramfs[dirs] = "${B}" 336 337python do_package:prepend () { 338 os.environ['STRIP'] = d.getVar('KERNEL_STRIP') 339} 340 341python do_devshell:prepend () { 342 os.environ["LDFLAGS"] = '' 343} 344 345addtask bundle_initramfs after do_install before do_deploy 346 347KERNEL_DEBUG_TIMESTAMPS ??= "0" 348 349kernel_do_compile() { 350 unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE 351 352 # setup native pkg-config variables (kconfig scripts call pkg-config directly, cannot generically be overriden to pkg-config-native) 353 export PKG_CONFIG_DIR="${STAGING_DIR_NATIVE}${libdir_native}/pkgconfig" 354 export PKG_CONFIG_PATH="$PKG_CONFIG_DIR:${STAGING_DATADIR_NATIVE}/pkgconfig" 355 export PKG_CONFIG_LIBDIR="$PKG_CONFIG_DIR" 356 export PKG_CONFIG_SYSROOT_DIR="" 357 358 if [ "${KERNEL_DEBUG_TIMESTAMPS}" != "1" ]; then 359 # kernel sources do not use do_unpack, so SOURCE_DATE_EPOCH may not 360 # be set.... 361 if [ "${SOURCE_DATE_EPOCH}" = "" -o "${SOURCE_DATE_EPOCH}" = "0" ]; then 362 # The source directory is not necessarily a git repository, so we 363 # specify the git-dir to ensure that git does not query a 364 # repository in any parent directory. 365 SOURCE_DATE_EPOCH=`git --git-dir="${S}/.git" log -1 --pretty=%ct 2>/dev/null || echo "${REPRODUCIBLE_TIMESTAMP_ROOTFS}"` 366 fi 367 368 ts=`LC_ALL=C date -d @$SOURCE_DATE_EPOCH` 369 export KBUILD_BUILD_TIMESTAMP="$ts" 370 export KCONFIG_NOTIMESTAMP=1 371 bbnote "KBUILD_BUILD_TIMESTAMP: $ts" 372 else 373 ts=`LC_ALL=C date` 374 export KBUILD_BUILD_TIMESTAMP="$ts" 375 bbnote "KBUILD_BUILD_TIMESTAMP: $ts" 376 fi 377 # The $use_alternate_initrd is only set from 378 # do_bundle_initramfs() This variable is specifically for the 379 # case where we are making a second pass at the kernel 380 # compilation and we want to force the kernel build to use a 381 # different initramfs image. The way to do that in the kernel 382 # is to specify: 383 # make ...args... CONFIG_INITRAMFS_SOURCE=some_other_initramfs.cpio 384 if [ "$use_alternate_initrd" = "" ] && [ "${INITRAMFS_TASK}" != "" ] ; then 385 # The old style way of copying an prebuilt image and building it 386 # is turned on via INTIRAMFS_TASK != "" 387 copy_initramfs 388 use_alternate_initrd=CONFIG_INITRAMFS_SOURCE=${B}/usr/${INITRAMFS_IMAGE_NAME}.cpio 389 fi 390 for typeformake in ${KERNEL_IMAGETYPE_FOR_MAKE} ; do 391 oe_runmake ${PARALLEL_MAKE} ${typeformake} ${KERNEL_EXTRA_ARGS} $use_alternate_initrd 392 done 393} 394 395kernel_do_transform_kernel() { 396 # vmlinux.gz is not built by kernel 397 if (echo "${KERNEL_IMAGETYPES}" | grep -wq "vmlinux\.gz"); then 398 mkdir -p "${KERNEL_OUTPUT_DIR}" 399 gzip -9cn < ${B}/vmlinux > "${KERNEL_OUTPUT_DIR}/vmlinux.gz" 400 fi 401} 402do_transform_kernel[dirs] = "${B}" 403addtask transform_kernel after do_compile before do_install 404 405do_compile_kernelmodules() { 406 unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE 407 if [ "${KERNEL_DEBUG_TIMESTAMPS}" != "1" ]; then 408 # kernel sources do not use do_unpack, so SOURCE_DATE_EPOCH may not 409 # be set.... 410 if [ "${SOURCE_DATE_EPOCH}" = "" -o "${SOURCE_DATE_EPOCH}" = "0" ]; then 411 # The source directory is not necessarily a git repository, so we 412 # specify the git-dir to ensure that git does not query a 413 # repository in any parent directory. 414 SOURCE_DATE_EPOCH=`git --git-dir="${S}/.git" log -1 --pretty=%ct 2>/dev/null || echo "${REPRODUCIBLE_TIMESTAMP_ROOTFS}"` 415 fi 416 417 ts=`LC_ALL=C date -d @$SOURCE_DATE_EPOCH` 418 export KBUILD_BUILD_TIMESTAMP="$ts" 419 export KCONFIG_NOTIMESTAMP=1 420 bbnote "KBUILD_BUILD_TIMESTAMP: $ts" 421 else 422 ts=`LC_ALL=C date` 423 export KBUILD_BUILD_TIMESTAMP="$ts" 424 bbnote "KBUILD_BUILD_TIMESTAMP: $ts" 425 fi 426 if (grep -q -i -e '^CONFIG_MODULES=y$' ${B}/.config); then 427 oe_runmake -C ${B} ${PARALLEL_MAKE} modules ${KERNEL_EXTRA_ARGS} 428 429 # Module.symvers gets updated during the 430 # building of the kernel modules. We need to 431 # update this in the shared workdir since some 432 # external kernel modules has a dependency on 433 # other kernel modules and will look at this 434 # file to do symbol lookups 435 cp ${B}/Module.symvers ${STAGING_KERNEL_BUILDDIR}/ 436 # 5.10+ kernels have module.lds that we need to copy for external module builds 437 if [ -e "${B}/scripts/module.lds" ]; then 438 install -Dm 0644 ${B}/scripts/module.lds ${STAGING_KERNEL_BUILDDIR}/scripts/module.lds 439 fi 440 else 441 bbnote "no modules to compile" 442 fi 443} 444addtask compile_kernelmodules after do_compile before do_strip 445 446kernel_do_install() { 447 # 448 # First install the modules 449 # 450 unset CFLAGS CPPFLAGS CXXFLAGS LDFLAGS MACHINE 451 if (grep -q -i -e '^CONFIG_MODULES=y$' .config); then 452 oe_runmake DEPMOD=echo MODLIB=${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION} INSTALL_FW_PATH=${D}${nonarch_base_libdir}/firmware modules_install 453 rm "${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}/build" 454 rm "${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}/source" 455 # Remove empty module directories to prevent QA issues 456 find "${D}${nonarch_base_libdir}/modules/${KERNEL_VERSION}/kernel" -type d -empty -delete 457 else 458 bbnote "no modules to install" 459 fi 460 461 # 462 # Install various kernel output (zImage, map file, config, module support files) 463 # 464 install -d ${D}/${KERNEL_IMAGEDEST} 465 466 # 467 # When including an initramfs bundle inside a FIT image, the fitImage is created after the install task 468 # by do_assemble_fitimage_initramfs. 469 # This happens after the generation of the initramfs bundle (done by do_bundle_initramfs). 470 # So, at the level of the install task we should not try to install the fitImage. fitImage is still not 471 # generated yet. 472 # After the generation of the fitImage, the deploy task copies the fitImage from the build directory to 473 # the deploy folder. 474 # 475 476 for imageType in ${KERNEL_IMAGETYPES} ; do 477 if [ $imageType != "fitImage" ] || [ "${INITRAMFS_IMAGE_BUNDLE}" != "1" ] ; then 478 install -m 0644 ${KERNEL_OUTPUT_DIR}/$imageType ${D}/${KERNEL_IMAGEDEST}/$imageType-${KERNEL_VERSION} 479 fi 480 done 481 482 install -m 0644 System.map ${D}/${KERNEL_IMAGEDEST}/System.map-${KERNEL_VERSION} 483 install -m 0644 .config ${D}/${KERNEL_IMAGEDEST}/config-${KERNEL_VERSION} 484 install -m 0644 vmlinux ${D}/${KERNEL_IMAGEDEST}/vmlinux-${KERNEL_VERSION} 485 [ -e Module.symvers ] && install -m 0644 Module.symvers ${D}/${KERNEL_IMAGEDEST}/Module.symvers-${KERNEL_VERSION} 486 install -d ${D}${sysconfdir}/modules-load.d 487 install -d ${D}${sysconfdir}/modprobe.d 488} 489 490# Must be ran no earlier than after do_kernel_checkout or else Makefile won't be in ${S}/Makefile 491do_kernel_version_sanity_check() { 492 if [ "x${KERNEL_VERSION_SANITY_SKIP}" = "x1" ]; then 493 exit 0 494 fi 495 496 # The Makefile determines the kernel version shown at runtime 497 # Don't use KERNEL_VERSION because the headers it grabs the version from aren't generated until do_compile 498 VERSION=$(grep "^VERSION =" ${S}/Makefile | sed s/.*=\ *//) 499 PATCHLEVEL=$(grep "^PATCHLEVEL =" ${S}/Makefile | sed s/.*=\ *//) 500 SUBLEVEL=$(grep "^SUBLEVEL =" ${S}/Makefile | sed s/.*=\ *//) 501 EXTRAVERSION=$(grep "^EXTRAVERSION =" ${S}/Makefile | sed s/.*=\ *//) 502 503 # Build a string for regex and a plain version string 504 reg="^${VERSION}\.${PATCHLEVEL}" 505 vers="${VERSION}.${PATCHLEVEL}" 506 if [ -n "${SUBLEVEL}" ]; then 507 # Ignoring a SUBLEVEL of zero is fine 508 if [ "${SUBLEVEL}" = "0" ]; then 509 reg="${reg}(\.${SUBLEVEL})?" 510 else 511 reg="${reg}\.${SUBLEVEL}" 512 vers="${vers}.${SUBLEVEL}" 513 fi 514 fi 515 vers="${vers}${EXTRAVERSION}" 516 reg="${reg}${EXTRAVERSION}" 517 518 if [ -z `echo ${PV} | grep -E "${reg}"` ]; then 519 bbfatal "Package Version (${PV}) does not match of kernel being built (${vers}). Please update the PV variable to match the kernel source or set KERNEL_VERSION_SANITY_SKIP=\"1\" in your recipe." 520 fi 521 exit 0 522} 523 524addtask shared_workdir after do_compile before do_compile_kernelmodules 525addtask shared_workdir_setscene 526 527do_shared_workdir_setscene () { 528 exit 1 529} 530 531emit_depmod_pkgdata() { 532 # Stash data for depmod 533 install -d ${PKGDESTWORK}/${KERNEL_PACKAGE_NAME}-depmod/ 534 echo "${KERNEL_VERSION}" > ${PKGDESTWORK}/${KERNEL_PACKAGE_NAME}-depmod/${KERNEL_PACKAGE_NAME}-abiversion 535 cp ${B}/System.map ${PKGDESTWORK}/${KERNEL_PACKAGE_NAME}-depmod/System.map-${KERNEL_VERSION} 536} 537 538PACKAGEFUNCS += "emit_depmod_pkgdata" 539 540do_shared_workdir[cleandirs] += " ${STAGING_KERNEL_BUILDDIR}" 541do_shared_workdir () { 542 cd ${B} 543 544 kerneldir=${STAGING_KERNEL_BUILDDIR} 545 install -d $kerneldir 546 547 # 548 # Store the kernel version in sysroots for module-base.bbclass 549 # 550 551 echo "${KERNEL_VERSION}" > $kerneldir/${KERNEL_PACKAGE_NAME}-abiversion 552 553 # Copy files required for module builds 554 cp System.map $kerneldir/System.map-${KERNEL_VERSION} 555 [ -e Module.symvers ] && cp Module.symvers $kerneldir/ 556 cp .config $kerneldir/ 557 mkdir -p $kerneldir/include/config 558 cp include/config/kernel.release $kerneldir/include/config/kernel.release 559 if [ -e certs/signing_key.x509 ]; then 560 # The signing_key.* files are stored in the certs/ dir in 561 # newer Linux kernels 562 mkdir -p $kerneldir/certs 563 cp certs/signing_key.* $kerneldir/certs/ 564 elif [ -e signing_key.priv ]; then 565 cp signing_key.* $kerneldir/ 566 fi 567 568 # We can also copy over all the generated files and avoid special cases 569 # like version.h, but we've opted to keep this small until file creep starts 570 # to happen 571 if [ -e include/linux/version.h ]; then 572 mkdir -p $kerneldir/include/linux 573 cp include/linux/version.h $kerneldir/include/linux/version.h 574 fi 575 576 # As of Linux kernel version 3.0.1, the clean target removes 577 # arch/powerpc/lib/crtsavres.o which is present in 578 # KBUILD_LDFLAGS_MODULE, making it required to build external modules. 579 if [ ${ARCH} = "powerpc" ]; then 580 if [ -e arch/powerpc/lib/crtsavres.o ]; then 581 mkdir -p $kerneldir/arch/powerpc/lib/ 582 cp arch/powerpc/lib/crtsavres.o $kerneldir/arch/powerpc/lib/crtsavres.o 583 fi 584 fi 585 586 if [ -d include/generated ]; then 587 mkdir -p $kerneldir/include/generated/ 588 cp -fR include/generated/* $kerneldir/include/generated/ 589 fi 590 591 if [ -d arch/${ARCH}/include/generated ]; then 592 mkdir -p $kerneldir/arch/${ARCH}/include/generated/ 593 cp -fR arch/${ARCH}/include/generated/* $kerneldir/arch/${ARCH}/include/generated/ 594 fi 595 596 if (grep -q -i -e '^CONFIG_UNWINDER_ORC=y$' $kerneldir/.config); then 597 # With CONFIG_UNWINDER_ORC (the default in 4.14), objtool is required for 598 # out-of-tree modules to be able to generate object files. 599 if [ -x tools/objtool/objtool ]; then 600 mkdir -p ${kerneldir}/tools/objtool 601 cp tools/objtool/objtool ${kerneldir}/tools/objtool/ 602 fi 603 fi 604 605 # When building with CONFIG_MODVERSIONS=y and CONFIG_RANDSTRUCT=y we need 606 # to copy the build assets generated for the randstruct seed to 607 # STAGING_KERNEL_BUILDDIR, otherwise the out-of-tree modules build will 608 # generate those assets which will result in a different 609 # RANDSTRUCT_HASHED_SEED 610 if [ -d scripts/basic ]; then 611 mkdir -p ${kerneldir}/scripts 612 cp -r scripts/basic ${kerneldir}/scripts 613 fi 614 615 if [ -d scripts/gcc-plugins ]; then 616 mkdir -p ${kerneldir}/scripts 617 cp -r scripts/gcc-plugins ${kerneldir}/scripts 618 fi 619 620} 621 622# We don't need to stage anything, not the modules/firmware since those would clash with linux-firmware 623SYSROOT_DIRS = "" 624 625KERNEL_LOCALVERSION ??= "" 626KERNEL_CONFIG_COMMAND ?= "oe_runmake_call -C ${S} O=${B} olddefconfig || oe_runmake -C ${S} O=${B} oldnoconfig" 627 628python check_oldest_kernel() { 629 oldest_kernel = d.getVar('OLDEST_KERNEL') 630 kernel_version = d.getVar('KERNEL_VERSION') 631 tclibc = d.getVar('TCLIBC') 632 if tclibc == 'glibc': 633 kernel_version = kernel_version.split('-', 1)[0] 634 if oldest_kernel and kernel_version: 635 if bb.utils.vercmp_string(kernel_version, oldest_kernel) < 0: 636 bb.warn('%s: OLDEST_KERNEL is "%s" but the version of the kernel you are building is "%s" - therefore %s as built may not be compatible with this kernel. Either set OLDEST_KERNEL to an older version, or build a newer kernel.' % (d.getVar('PN'), oldest_kernel, kernel_version, tclibc)) 637} 638 639check_oldest_kernel[vardepsexclude] += "OLDEST_KERNEL KERNEL_VERSION" 640do_configure[prefuncs] += "check_oldest_kernel" 641 642kernel_do_configure() { 643 # fixes extra + in /lib/modules/2.6.37+ 644 # $ scripts/setlocalversion . => + 645 # $ make kernelversion => 2.6.37 646 # $ make kernelrelease => 2.6.37+ 647 if [ ! -e ${B}/.scmversion -a ! -e ${S}/.scmversion ]; then 648 echo ${KERNEL_LOCALVERSION} > ${B}/.scmversion 649 echo ${KERNEL_LOCALVERSION} > ${S}/.scmversion 650 fi 651 652 if [ "${S}" != "${B}" ] && [ -f "${S}/.config" ] && [ ! -f "${B}/.config" ]; then 653 mv "${S}/.config" "${B}/.config" 654 fi 655 656 # Copy defconfig to .config if .config does not exist. This allows 657 # recipes to manage the .config themselves in do_configure:prepend(). 658 if [ -f "${WORKDIR}/defconfig" ] && [ ! -f "${B}/.config" ]; then 659 cp "${WORKDIR}/defconfig" "${B}/.config" 660 fi 661 662 ${KERNEL_CONFIG_COMMAND} 663} 664 665do_savedefconfig() { 666 bbplain "Saving defconfig to:\n${B}/defconfig" 667 oe_runmake -C ${B} savedefconfig 668} 669do_savedefconfig[nostamp] = "1" 670addtask savedefconfig after do_configure 671 672inherit cml1 pkgconfig 673 674# Need LD, HOSTLDFLAGS and more for config operations 675KCONFIG_CONFIG_COMMAND:append = " ${EXTRA_OEMAKE}" 676 677EXPORT_FUNCTIONS do_compile do_transform_kernel do_transform_bundled_initramfs do_install do_configure 678 679# kernel-base becomes kernel-${KERNEL_VERSION} 680# kernel-image becomes kernel-image-${KERNEL_VERSION} 681PACKAGES = "${KERNEL_PACKAGE_NAME} ${KERNEL_PACKAGE_NAME}-base ${KERNEL_PACKAGE_NAME}-vmlinux ${KERNEL_PACKAGE_NAME}-image ${KERNEL_PACKAGE_NAME}-dev ${KERNEL_PACKAGE_NAME}-modules ${KERNEL_PACKAGE_NAME}-dbg" 682FILES:${PN} = "" 683FILES:${KERNEL_PACKAGE_NAME}-base = "${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.order ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.builtin ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.builtin.modinfo" 684FILES:${KERNEL_PACKAGE_NAME}-image = "" 685FILES:${KERNEL_PACKAGE_NAME}-dev = "/${KERNEL_IMAGEDEST}/System.map* /${KERNEL_IMAGEDEST}/Module.symvers* /${KERNEL_IMAGEDEST}/config* ${KERNEL_SRC_PATH} ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/build" 686FILES:${KERNEL_PACKAGE_NAME}-vmlinux = "/${KERNEL_IMAGEDEST}/vmlinux-${KERNEL_VERSION_NAME}" 687FILES:${KERNEL_PACKAGE_NAME}-modules = "" 688FILES:${KERNEL_PACKAGE_NAME}-dbg = "/usr/lib/debug /usr/src/debug" 689RDEPENDS:${KERNEL_PACKAGE_NAME} = "${KERNEL_PACKAGE_NAME}-base (= ${EXTENDPKGV})" 690# Allow machines to override this dependency if kernel image files are 691# not wanted in images as standard 692RRECOMMENDS:${KERNEL_PACKAGE_NAME}-base ?= "${KERNEL_PACKAGE_NAME}-image (= ${EXTENDPKGV})" 693PKG:${KERNEL_PACKAGE_NAME}-image = "${KERNEL_PACKAGE_NAME}-image-${@legitimize_package_name(d.getVar('KERNEL_VERSION'))}" 694RDEPENDS:${KERNEL_PACKAGE_NAME}-image += "${@oe.utils.conditional('KERNEL_IMAGETYPE', 'vmlinux', '${KERNEL_PACKAGE_NAME}-vmlinux (= ${EXTENDPKGV})', '', d)}" 695PKG:${KERNEL_PACKAGE_NAME}-base = "${KERNEL_PACKAGE_NAME}-${@legitimize_package_name(d.getVar('KERNEL_VERSION'))}" 696RPROVIDES:${KERNEL_PACKAGE_NAME}-base += "${KERNEL_PACKAGE_NAME}-${KERNEL_VERSION}" 697ALLOW_EMPTY:${KERNEL_PACKAGE_NAME} = "1" 698ALLOW_EMPTY:${KERNEL_PACKAGE_NAME}-base = "1" 699ALLOW_EMPTY:${KERNEL_PACKAGE_NAME}-image = "1" 700ALLOW_EMPTY:${KERNEL_PACKAGE_NAME}-modules = "1" 701DESCRIPTION:${KERNEL_PACKAGE_NAME}-modules = "Kernel modules meta package" 702 703pkg_postinst:${KERNEL_PACKAGE_NAME}-base () { 704 if [ ! -e "$D/lib/modules/${KERNEL_VERSION}" ]; then 705 mkdir -p $D/lib/modules/${KERNEL_VERSION} 706 fi 707 if [ -n "$D" ]; then 708 depmodwrapper -a -b $D ${KERNEL_VERSION} ${KERNEL_PACKAGE_NAME} 709 else 710 depmod -a ${KERNEL_VERSION} 711 fi 712} 713 714PACKAGESPLITFUNCS =+ "split_kernel_packages" 715 716python split_kernel_packages () { 717 do_split_packages(d, root='${nonarch_base_libdir}/firmware', file_regex=r'^(.*)\.(bin|fw|cis|csp|dsp)$', output_pattern='${KERNEL_PACKAGE_NAME}-firmware-%s', description='Firmware for %s', recursive=True, extra_depends='') 718} 719 720# Many scripts want to look in arch/$arch/boot for the bootable 721# image. This poses a problem for vmlinux and vmlinuz based 722# booting. This task arranges to have vmlinux and vmlinuz appear 723# in the normalized directory location. 724do_kernel_link_images() { 725 if [ ! -d "${B}/arch/${ARCH}/boot" ]; then 726 mkdir ${B}/arch/${ARCH}/boot 727 fi 728 cd ${B}/arch/${ARCH}/boot 729 ln -sf ../../../vmlinux 730 if [ -f ../../../vmlinuz ]; then 731 ln -sf ../../../vmlinuz 732 fi 733 if [ -f ../../../vmlinuz.bin ]; then 734 ln -sf ../../../vmlinuz.bin 735 fi 736 if [ -f ../../../vmlinux.64 ]; then 737 ln -sf ../../../vmlinux.64 738 fi 739} 740addtask kernel_link_images after do_compile before do_strip 741 742python do_strip() { 743 import shutil 744 745 strip = d.getVar('STRIP') 746 extra_sections = d.getVar('KERNEL_IMAGE_STRIP_EXTRA_SECTIONS') 747 kernel_image = d.getVar('B') + "/" + d.getVar('KERNEL_OUTPUT_DIR') + "/vmlinux" 748 749 if (extra_sections and kernel_image.find(d.getVar('KERNEL_IMAGEDEST') + '/vmlinux') != -1): 750 kernel_image_stripped = kernel_image + ".stripped" 751 shutil.copy2(kernel_image, kernel_image_stripped) 752 oe.package.runstrip((kernel_image_stripped, 8, strip, extra_sections)) 753 bb.debug(1, "KERNEL_IMAGE_STRIP_EXTRA_SECTIONS is set, stripping sections: " + \ 754 extra_sections) 755} 756do_strip[dirs] = "${B}" 757 758addtask strip before do_sizecheck after do_kernel_link_images 759 760# Support checking the kernel size since some kernels need to reside in partitions 761# with a fixed length or there is a limit in transferring the kernel to memory. 762# If more than one image type is enabled, warn on any that don't fit but only fail 763# if none fit. 764do_sizecheck() { 765 if [ ! -z "${KERNEL_IMAGE_MAXSIZE}" ]; then 766 invalid=`echo ${KERNEL_IMAGE_MAXSIZE} | sed 's/[0-9]//g'` 767 if [ -n "$invalid" ]; then 768 die "Invalid KERNEL_IMAGE_MAXSIZE: ${KERNEL_IMAGE_MAXSIZE}, should be an integer (The unit is Kbytes)" 769 fi 770 at_least_one_fits= 771 for imageType in ${KERNEL_IMAGETYPES} ; do 772 size=`du -ks ${B}/${KERNEL_OUTPUT_DIR}/$imageType | awk '{print $1}'` 773 if [ $size -gt ${KERNEL_IMAGE_MAXSIZE} ]; then 774 bbwarn "This kernel $imageType (size=$size(K) > ${KERNEL_IMAGE_MAXSIZE}(K)) is too big for your device." 775 else 776 at_least_one_fits=y 777 fi 778 done 779 if [ -z "$at_least_one_fits" ]; then 780 die "All kernel images are too big for your device. Please reduce the size of the kernel by making more of it modular." 781 fi 782 fi 783} 784do_sizecheck[dirs] = "${B}" 785 786addtask sizecheck before do_install after do_strip 787 788inherit kernel-artifact-names 789 790kernel_do_deploy() { 791 deployDir="${DEPLOYDIR}" 792 if [ -n "${KERNEL_DEPLOYSUBDIR}" ]; then 793 deployDir="${DEPLOYDIR}/${KERNEL_DEPLOYSUBDIR}" 794 mkdir "$deployDir" 795 fi 796 797 for imageType in ${KERNEL_IMAGETYPES} ; do 798 baseName=$imageType-${KERNEL_IMAGE_NAME} 799 800 if [ -s ${KERNEL_OUTPUT_DIR}/$imageType.stripped ] ; then 801 install -m 0644 ${KERNEL_OUTPUT_DIR}/$imageType.stripped $deployDir/$baseName${KERNEL_IMAGE_BIN_EXT} 802 else 803 install -m 0644 ${KERNEL_OUTPUT_DIR}/$imageType $deployDir/$baseName${KERNEL_IMAGE_BIN_EXT} 804 fi 805 if [ -n "${KERNEL_IMAGE_LINK_NAME}" ] ; then 806 ln -sf $baseName${KERNEL_IMAGE_BIN_EXT} $deployDir/$imageType-${KERNEL_IMAGE_LINK_NAME}${KERNEL_IMAGE_BIN_EXT} 807 fi 808 if [ "${KERNEL_IMAGETYPE_SYMLINK}" = "1" ] ; then 809 ln -sf $baseName${KERNEL_IMAGE_BIN_EXT} $deployDir/$imageType 810 fi 811 done 812 813 if [ ${MODULE_TARBALL_DEPLOY} = "1" ] && (grep -q -i -e '^CONFIG_MODULES=y$' .config); then 814 mkdir -p ${D}${root_prefix}/lib 815 if [ -n "${SOURCE_DATE_EPOCH}" ]; then 816 TAR_ARGS="--sort=name --clamp-mtime --mtime=@${SOURCE_DATE_EPOCH}" 817 else 818 TAR_ARGS="" 819 fi 820 TAR_ARGS="$TAR_ARGS --owner=0 --group=0" 821 tar $TAR_ARGS -cv -C ${D}${root_prefix} lib | gzip -9n > $deployDir/modules-${MODULE_TARBALL_NAME}.tgz 822 823 if [ -n "${MODULE_TARBALL_LINK_NAME}" ] ; then 824 ln -sf modules-${MODULE_TARBALL_NAME}.tgz $deployDir/modules-${MODULE_TARBALL_LINK_NAME}.tgz 825 fi 826 fi 827 828 if [ ! -z "${INITRAMFS_IMAGE}" -a x"${INITRAMFS_IMAGE_BUNDLE}" = x1 ]; then 829 for imageType in ${KERNEL_IMAGETYPES} ; do 830 if [ "$imageType" = "fitImage" ] ; then 831 continue 832 fi 833 initramfsBaseName=$imageType-${INITRAMFS_NAME} 834 install -m 0644 ${KERNEL_OUTPUT_DIR}/$imageType.initramfs $deployDir/$initramfsBaseName${KERNEL_IMAGE_BIN_EXT} 835 if [ -n "${INITRAMFS_LINK_NAME}" ] ; then 836 ln -sf $initramfsBaseName${KERNEL_IMAGE_BIN_EXT} $deployDir/$imageType-${INITRAMFS_LINK_NAME}${KERNEL_IMAGE_BIN_EXT} 837 fi 838 done 839 fi 840} 841 842# We deploy to filenames that include PKGV and PKGR, read the saved data to 843# ensure we get the right values for both 844do_deploy[prefuncs] += "read_subpackage_metadata" 845 846addtask deploy after do_populate_sysroot do_packagedata 847 848EXPORT_FUNCTIONS do_deploy 849 850# Add using Device Tree support 851inherit kernel-devicetree 852