scripts/lttng-modules/param-build.sh

   1 #!/bin/bash
   2 #
   3 # Copyright (C) 2016-2019 Michael Jeanson <mjeanson@efficios.com>
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 set -exu
  19
  20 # Parameters
  21 arch=${arch:-amd64}
  22 cross_arch=${cross_arch:-}
  23 ktag=${ktag:-}
  24 kgitrepo=${kgitrepo:-}
  25 mversion=${mversion:-}
  26 mgitrepo=${mgitrepo:-}
  27
  28
  29 ## FUNCTIONS ##
  30
  31 # Kernel version compare functions
  32 verlte() {
  33     [  "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | head -n1)" ]
  34 }
  35
  36 verlt() {
  37     # shellcheck disable=SC2015
  38     [ "$1" = "$2" ] && return 1 || verlte "$1" "$2"
  39 }
  40
  41 vergte() {
  42     [  "$1" = "$(printf '%s\n%s' "$1" "$2" | sort -V | tail -n1)" ]
  43 }
  44
  45 vergt() {
  46     # shellcheck disable=SC2015
  47     [ "$1" = "$2" ] && return 1 || vergte "$1" "$2"
  48 }
  49
  50
  51 git_clone_modules_sources() {
  52     mkdir -p "$MODULES_GIT_DIR"
  53
  54     # If the version starts with "refs/", checkout the specific git ref, otherwise treat it
  55     # as a branch name.
  56     if [ "${mversion:0:5}" = "refs/" ]; then
  57         git clone --no-tags --depth=1 "${mgitrepo}" "$MODULES_GIT_DIR"
  58         (cd "$MODULES_GIT_DIR" && git fetch origin "${mversion}" && git checkout FETCH_HEAD)
  59     else
  60         git clone --no-tags --depth=1 -b "${mversion}" "${mgitrepo}" "$MODULES_GIT_DIR"
  61     fi
  62 }
  63
  64 # Checkout a shallow kernel tree of the specified tag
  65 git_clone_linux_sources() {
  66     mkdir -p "$LINUX_GIT_DIR"
  67     git clone --depth=1 -b "${ktag}" --reference "$LINUX_GIT_REF_REPO_DIR" "${kgitrepo}" "$LINUX_GIT_DIR"
  68 }
  69
  70
  71 # Export the kernel sources from the git repo
  72 git_export_linux_sources() {
  73     cd "$LINUX_GIT_DIR"
  74     git archive "${ktag}" | tar -x -C "$LINUX_SRCOBJ_DIR"
  75 }
  76
  77
  78 # Upload the tar archive to the object store
  79 upload_archive_obj() {
  80     s3cmd -c "$WORKSPACE/.s3cfg" put "$WORKSPACE/$obj_name" "$obj_url_prefix/"
  81     rm -f "$WORKSPACE/$obj_name"
  82 }
  83
  84
  85 extract_archive_obj() {
  86     tar -xf "$WORKSPACE/$obj_name" -C "$LINUX_OBJ_DIR"
  87     rm -f "$WORKSPACE/$obj_name"
  88 }
  89
  90
  91 tar_archive_obj() {
  92     cd "$LINUX_OBJ_DIR"
  93     tar -cf "$WORKSPACE/$obj_name" -I pbzip2 .
  94     cd -
  95 }
  96
  97 # Find the most recent GCC version supported by the kernel sources
  98 select_compiler() {
  99     local selected_cc
 100
 101     cd "$LINUX_SRCOBJ_DIR"
 102
 103     kversion=$(make -s kernelversion)
 104
 105     set +e
 106
 107     for cc in gcc-8 gcc-5 gcc-4.8; do
 108       if "${CROSS_COMPILE:-}${cc}" -I include/ -D__LINUX_COMPILER_H -D__LINUX_COMPILER_TYPES_H -E include/linux/compiler-gcc.h; then
 109         selected_cc="$cc"
 110         break
 111       fi
 112     done
 113
 114     set -e
 115
 116     if [ "x$selected_cc" = "x" ]; then
 117       echo "Found no suitable compiler."
 118       exit 1
 119     fi
 120
 121     # Force gcc-4.8 for kernels before 3.18
 122     if { verlt "$kversion" "3.18"; }; then
 123       selected_cc=gcc-4.8
 124     fi
 125
 126     if [ "$selected_cc" != "gcc-4.8" ]; then
 127         # Older kernel Makefiles do not expect the compiler to default to PIE
 128         KAFLAGS="-fno-pie"
 129         KCFLAGS="-fno-pie -no-pie -fno-stack-protector"
 130         KCPPFLAGS="-fno-pie"
 131         export KAFLAGS KCFLAGS KCPPFLAGS
 132     fi
 133
 134     export CC="${CROSS_COMPILE:-}${selected_cc}"
 135     export HOSTCC="${selected_cc}"
 136
 137     cd -
 138 }
 139
 140
 141 build_linux_kernel() {
 142     cd "$LINUX_SRCOBJ_DIR"
 143
 144     kversion=$(make -s kernelversion)
 145
 146     # Generate kernel configuration
 147     case "$ktag" in
 148       Ubuntu*)
 149         if [ "${cross_arch}" = "powerpc" ]; then
 150           if vergte "${kversion}" "4.10"; then
 151             echo "Ubuntu removed big endian powerpc configuration from kernel >= 4.10. Don't try to build it."
 152             exit 0
 153           fi
 154         fi
 155
 156         # Disable riscv64 config generation, we don't have a toolchain on bionic
 157         sed -i 's/riscv64 //' debian.master/etc/kernelconfig
 158
 159         # Hack for kernel Ubuntu-hwe-5.8
 160         if [ ! -f "debian/compat" ]; then
 161             echo "10" > "debian/compat"
 162         fi
 163
 164         fakeroot debian/rules clean KW_DEFCONFIG_DIR=.
 165         fakeroot debian/rules genconfigs KW_DEFCONFIG_DIR=.
 166         cp CONFIGS/"${ubuntu_config}" .config
 167         ;;
 168
 169       *)
 170         # Force 32bit build on i386, default is 64bit
 171         if [ "$arch" = "i386" ]; then
 172             export ARCH="i386"
 173         fi
 174
 175         # allyesconfig is mostly broken for kernels of the 2.6 series
 176         if verlt "$kversion" "3.0"; then
 177             vanilla_config="defconfig"
 178         fi
 179
 180         make "${vanilla_config}"
 181         ;;
 182     esac
 183
 184     # oldnoconfig was renamed in 4.19
 185     if vergte "$kversion" "4.19"; then
 186         update_conf_target="olddefconfig"
 187     else
 188         update_conf_target="oldnoconfig"
 189     fi
 190
 191     # Fix 'defined(@array)' was removed from recent perl
 192     if [ -f "kernel/timeconst.pl" ]; then
 193       sed -i 's/defined(\@\(.*\))/@\1/' kernel/timeconst.pl
 194     fi
 195
 196     # Fix syntax of inline assembly which is confused with C++11 raw strings on gcc >= 5
 197     if [ "$HOSTCC" != "gcc-4.8" ]; then
 198       if [ -f "arch/x86/kvm/svm.c" ]; then
 199         sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/svm.c
 200       fi
 201
 202       if [ -f "arch/x86/kvm/vmx.c" ]; then
 203         sed -i 's/ R"/ R "/g; s/"R"/" R "/g' arch/x86/kvm/vmx.c
 204       fi
 205     fi
 206
 207     # Newer binutils don't accept 3 operand 'cmp' instructions on ppc64
 208     # Convert them to 'cmpw' which was previously done silently
 209     if verlt "$kversion" "4.9"; then
 210             find arch/powerpc/ -name "*.S" -print0 | xargs -0 sed -i "s/\(cmp\)\(\s\+[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+\)/cmpw\2/"
 211             find arch/powerpc/ -name "*.S" -print0 | xargs -0 sed -i "s/\(cmpli\)\(\s\+[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+,\s*[a-zA-Z0-9]\+\)/cmplwi\2/"
 212             sed -i "s/\$pie \-o \"\$ofile\"/\$pie --no-dynamic-linker -o \"\$ofile\"/" arch/powerpc/boot/wrapper
 213     fi
 214
 215     # Fix a typo in v2.6.36.x
 216     if [ -f "arch/x86/kernel/entry_64.S" ]; then
 217       sed -i 's/END(do_hypervisor_callback)/END(xen_do_hypervisor_callback)/' arch/x86/kernel/entry_64.S
 218     fi
 219
 220     # Fix compiler switch in vdso Makefile for 2.6.36 to 2.6.36.2
 221     if { vergte "$kversion" "2.6.36" && verlte "$kversion" "2.6.36.3"; }; then
 222       sed -i 's/-m elf_x86_64/-m64/' arch/x86/vdso/Makefile
 223       sed -i 's/-m elf_i386/-m32/' arch/x86/vdso/Makefile
 224     fi
 225
 226     # Fix kernel < 3.0 with gcc >= 4.7
 227     if verlt "$kversion" "3.0"; then
 228       sed -i '/linux\/compiler.h/a #include <linux\/linkage.h> \/* For asmregparm *\/' arch/x86/include/asm/ptrace.h
 229       sed -i 's/extern long syscall_trace_enter/extern asmregparm long syscall_trace_enter/' arch/x86/include/asm/ptrace.h
 230       sed -i 's/extern void syscall_trace_leave/extern asmregparm void syscall_trace_leave/' arch/x86/include/asm/ptrace.h
 231       echo "header-y += linkage.h" >> include/linux/Kbuild
 232     fi
 233
 234     # GCC 4.8
 235     if [ "$HOSTCC" == "gcc-4.8" ]; then
 236       scripts/config --disable CONFIG_CC_STACKPROTECTOR_STRONG
 237     fi
 238
 239     # Don't try to sign modules
 240     scripts/config --disable CONFIG_MODULE_SIG
 241
 242     # Disable kernel stack frame correctness validation, introduced in 4.6.0 and currently fails
 243     scripts/config --disable CONFIG_STACK_VALIDATION
 244
 245     # Cause problems with inline assembly on i386
 246     scripts/config --disable CONFIG_DEBUG_SECTION_MISMATCH
 247
 248     # Don't build samples, they are broken on some kernel releases
 249     scripts/config --disable CONFIG_SAMPLES
 250     scripts/config --disable CONFIG_BUILD_DOCSRC
 251
 252     # Disable kcov
 253     scripts/config --disable CONFIG_KCOV
 254
 255     # Broken on some RT kernels
 256     scripts/config --disable CONFIG_HYPERV
 257
 258     # Broken drivers
 259     scripts/config --disable CONFIG_RAPIDIO_TSI721
 260     scripts/config --disable CONFIG_SGI_XP
 261     scripts/config --disable CONFIG_MFD_WM8994
 262     scripts/config --disable CONFIG_DRM_RADEON
 263     scripts/config --disable CONFIG_SND_SOC_WM5100
 264
 265     # IGBVF won't build with recent gcc on 2.6.38.x
 266     if { vergte "$kversion" "2.6.37" && verlt "$kversion" "2.6.38"; }; then
 267       scripts/config --disable CONFIG_IGBVF
 268     fi
 269
 270     # Don't fail the build on warnings
 271     scripts/config --disable CONFIG_WERROR
 272
 273     # Set required options
 274     scripts/config --enable CONFIG_TRACEPOINTS
 275     scripts/config --enable CONFIG_KALLSYMS
 276     scripts/config --enable CONFIG_HIGH_RES_TIMERS
 277     scripts/config --enable CONFIG_KPROBES
 278     scripts/config --enable CONFIG_FTRACE
 279     scripts/config --enable CONFIG_BLK_DEV_IO_TRACE
 280     scripts/config --enable CONFIG_KALLSYMS_ALL
 281     scripts/config --enable CONFIG_HAVE_SYSCALL_TRACEPOINTS
 282     scripts/config --enable CONFIG_PERF_EVENTS
 283     scripts/config --enable CONFIG_EVENT_TRACING
 284     scripts/config --enable CONFIG_KRETPROBES
 285
 286     # FIXME: disable objtool on vmlinux, it OOMs on allyesconfig
 287     sed -i 's/objtool_link vmlinux.o//' scripts/link-vmlinux.sh || true
 288     # Starting with v6.1-rc6
 289     sed -i 's/^objtool-enabled := .*/objtool-enabled := /' scripts/Makefile.vmlinux_o || true
 290
 291     # Disable SORTTAB
 292     sed -i 's/is_enabled CONFIG_BUILDTIME_TABLE_SORT/is_enabled CONFIG_NONEXISTANT/' scripts/link-vmlinux.sh || true
 293
 294     # Debug
 295     #cat .config
 296
 297     make "$update_conf_target" CC="$CC"
 298     make -j"$NPROC" CC="$CC"
 299
 300     krelease=$(make -s kernelrelease CC="$CC")
 301
 302     # Save the kernel and modules
 303     mkdir -p "$LINUX_INSTOBJ_DIR/boot"
 304     make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_MOD_STRIP=1 modules_install CC="$CC"
 305     make INSTALL_MOD_PATH="$LINUX_INSTOBJ_DIR" INSTALL_PATH="$LINUX_INSTOBJ_DIR/boot" install CC="$CC"
 306     rm -f "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source" "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/build"
 307     ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
 308     ln -s ../../../../sources "$LINUX_INSTOBJ_DIR/lib/modules/${krelease}/source"
 309 }
 310
 311
 312 extract_distro_headers() {
 313
 314     # Enter linux source dir
 315     cd "${LINUX_SRCOBJ_DIR}"
 316
 317
 318     # For RT kernels, copy version file
 319     if [ -s localversion-rt ]; then
 320         cp -a localversion-rt "${LINUX_HDROBJ_DIR}"
 321     fi
 322
 323     # Copy all Makefile related stuff
 324     find . -path './include/*' -prune \
 325         -o -path './scripts/*' -prune -o -type f \
 326         \( -name 'Makefile*' -o -name 'Kconfig*' -o -name 'Kbuild*' -o \
 327             -name '*.sh' -o -name '*.pl' -o -name '*.lds' \) \
 328         -print | cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 329
 330     # Copy base scripts and include dirs
 331     cp -a scripts include "${LINUX_HDROBJ_DIR}"
 332
 333     # Copy arch includes
 334     (find arch -name include -type d -print0 | \
 335         xargs -0 -n1 -i: find : -type f) | \
 336         cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 337
 338     # Copy arch scripts
 339     (find arch -name scripts -type d -print0 | \
 340         xargs -0 -n1 -i: find : -type f) | \
 341         cpio -pd --preserve-modification-time "${LINUX_HDROBJ_DIR}"
 342
 343     # Cleanup scripts
 344     rm -f "${LINUX_HDROBJ_DIR}/scripts/*.o"
 345     rm -f "${LINUX_HDROBJ_DIR}/scripts/*/*.o"
 346
 347     # On powerpc 32bits this object is required to link modules
 348     if [ "${karch}" = "powerpc" ]; then
 349         if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
 350             :
 351         else
 352             cp -a --parents arch/powerpc/lib/crtsavres.[So] "${LINUX_HDROBJ_DIR}/"
 353         fi
 354     fi
 355
 356     # On arm64 between 4.13 and 1.15 this object is required to build with ftrace support
 357     if [ "${karch}" = "arm64" ]; then
 358         if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
 359             cp -a --parents arch/arm64/kernel/ftrace-mod.[So] "${LINUX_HDROBJ_DIR}/"
 360         fi
 361     fi
 362
 363     # Newer kernels need objtool to build modules when CONFIG_STACK_VALIDATION=y
 364     if [ -f tools/objtool/objtool ]; then
 365       cp -a --parents tools/objtool/objtool "${LINUX_HDROBJ_DIR}/"
 366     fi
 367
 368     if [ -f "arch/x86/kernel/macros.s" ]; then
 369       cp -a --parents arch/x86/kernel/macros.s "${LINUX_HDROBJ_DIR}/"
 370     fi
 371
 372     # Copy modules related stuff, if available
 373     if [ -s Module.symvers ]; then
 374         cp Module.symvers "${LINUX_HDROBJ_DIR}"
 375     fi
 376
 377     if [ -s System.map ]; then
 378         cp System.map "${LINUX_HDROBJ_DIR}"
 379     fi
 380
 381     if [ -s Module.markers ]; then
 382         cp Module.markers "${LINUX_HDROBJ_DIR}"
 383     fi
 384
 385     # Copy config file
 386     cp .config "${LINUX_HDROBJ_DIR}"
 387
 388     # Make sure the Makefile and version.h have a matching timestamp so that
 389     # external modules can be built
 390     if [ -s "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h" ]; then
 391         touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/generated/uapi/linux/version.h"
 392     elif [ -s "${LINUX_HDROBJ_DIR}/include/linux/version.h" ]; then
 393         touch -r "${LINUX_HDROBJ_DIR}/Makefile" "${LINUX_HDROBJ_DIR}/include/linux/version.h"
 394     else
 395         echo "Missing version.h"
 396         exit 1
 397     fi
 398     touch -r "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/generated/autoconf.h"
 399
 400     # Copy .config to include/config/auto.conf so "make prepare" is unnecessary.
 401     if [ ! -f "${LINUX_HDROBJ_DIR}/include/config/auto.conf" ]; then
 402         cp "${LINUX_HDROBJ_DIR}/.config" "${LINUX_HDROBJ_DIR}/include/config/auto.conf"
 403     fi
 404
 405     # Finally clean the object files from the full source tree
 406     make clean
 407
 408     # And regen the modules support files
 409     make modules_prepare CC="$CC"
 410
 411     # On powerpc 32bits this object is required to link modules
 412     if [ "${karch}" = "powerpc" ]; then
 413         if [ "x$(scripts/config -s CONFIG_PPC64)" = "xy" ] && vergte "${kversion}" "5.4"; then
 414             :
 415         else
 416             make arch/powerpc/lib/crtsavres.o CC="$CC"
 417         fi
 418     fi
 419
 420     # On arm64 between 4.13 and 4.15 this object is required to build with ftrace support
 421     if [ "${karch}" = "arm64" ]; then
 422         if [ -f "arch/arm64/kernel/ftrace-mod.S" ]; then
 423             make arch/arm64/kernel/ftrace-mod.o CC="$CC"
 424         fi
 425     fi
 426
 427     # Version specific tasks
 428     case "$ktag" in
 429       Ubuntu*)
 430         # Add Ubuntu ABI number to kernel headers, this is normally done by the packaging code
 431         ABINUM="$(echo "$ktag" | grep -P -o 'Ubuntu-(lts-)?.*-\K\d+(?=\..*)')"
 432         echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> include/generated/utsrelease.h
 433         echo "#define UTS_UBUNTU_RELEASE_ABI $ABINUM" >> "${LINUX_HDROBJ_DIR}/include/generated/utsrelease.h"
 434         ;;
 435     esac
 436 }
 437
 438
 439 build_modules() {
 440
 441     local kdir="$1"
 442     local outdir="$2"
 443     local kversion
 444
 445     kversion=$(make -C "$LINUX_HDROBJ_DIR" -s kernelversion)
 446
 447     # Try to catch some compatibility problems by turning some
 448     # warnings into errors.
 449     #export KCFLAGS="$KCFLAGS -Wall -Werror"
 450
 451     # Enter lttng-modules source dir
 452     cd "${MODULES_GIT_DIR}"
 453
 454     # kernels 3.10 to 3.10.13 and 3.11 to 3.11.2 introduce a deadlock in the
 455     # timekeeping subsystem. We want those build to fail.
 456     if { vergte "$kversion" "3.10" && verlte "$kversion" "3.10.13"; } || \
 457        { vergte "$kversion" "3.11" && verlte "$kversion" "3.11.2"; }; then
 458
 459         set +e
 460
 461         # Build modules
 462         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 463         ret=$?
 464
 465         set -e
 466
 467         # We expect this build to fail, if it doesn't, fail the job.
 468         if [ "$ret" -eq 0 ]; then
 469             echo "This build should have failed."
 470             exit 1
 471         fi
 472
 473         # We have to publish at least one file or the build will fail
 474         echo "This kernel is broken, there is a deadlock in the timekeeping subsystem." > "${outdir}/BROKEN.txt.ko"
 475
 476         KERNELDIR="${kdir}" make clean
 477
 478     else # Regular build
 479
 480         # Build modules against full kernel sources
 481         KERNELDIR="${kdir}" make -j"${NPROC}" V=1 CC="$CC"
 482
 483         # Install modules to build dir
 484         KERNELDIR="${kdir}" make INSTALL_MOD_PATH="${outdir}" modules_install
 485
 486         # Clean build dir
 487         KERNELDIR="${kdir}" make clean
 488     fi
 489 }
 490
 491
 492 ## MAIN ##
 493
 494 # Use all CPU cores
 495 NPROC=$(nproc)
 496
 497 MODULES_GIT_DIR="${WORKSPACE}/src/lttng-modules"
 498 LINUX_GIT_DIR="${WORKSPACE}/src/linux"
 499
 500 LINUX_OBJ_DIR="${WORKSPACE}/linux"
 501 LINUX_SRCOBJ_DIR="${LINUX_OBJ_DIR}/sources"
 502 LINUX_HDROBJ_DIR="${LINUX_OBJ_DIR}/headers"
 503 LINUX_INSTOBJ_DIR="${LINUX_OBJ_DIR}/install"
 504
 505 MODULES_OUTPUT_KSRC_DIR="${WORKSPACE}/build/lttng-modules-ksrc"
 506 MODULES_OUTPUT_KHDR_DIR="${WORKSPACE}/build/lttng-modules-khdr"
 507
 508 LINUX_GIT_REF_REPO_DIR="$HOME/gitcache/linux-stable.git/"
 509
 510 OBJ_STORE_URL="s3://jenkins"
 511
 512 cd "$WORKSPACE"
 513
 514 # Create build directories
 515 mkdir -p "${LINUX_SRCOBJ_DIR}" "${LINUX_HDROBJ_DIR}" "${LINUX_INSTOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
 516
 517 git_clone_modules_sources
 518
 519 # Setup cross compile env if available
 520 if [ "x${cross_arch}" != "x" ]; then
 521
 522     case "$cross_arch" in
 523         "armhf")
 524             karch="arm"
 525             cross_compile="arm-linux-gnueabihf-"
 526             vanilla_config="imx_v6_v7_defconfig"
 527             ubuntu_config="armhf-config.flavour.generic"
 528             ;;
 529
 530         "arm64")
 531             karch="arm64"
 532             cross_compile="aarch64-linux-gnu-"
 533             vanilla_config="defconfig"
 534             ubuntu_config="arm64-config.flavour.generic"
 535             ;;
 536
 537         "powerpc")
 538             karch="powerpc"
 539             cross_compile="powerpc-linux-gnu-"
 540             vanilla_config="ppc44x_defconfig"
 541             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 542             ;;
 543
 544         "ppc64el")
 545             karch="powerpc"
 546             cross_compile="powerpc64le-linux-gnu-"
 547             vanilla_config="pseries_le_defconfig"
 548             ubuntu_config="ppc64el-config.flavour.generic"
 549             ;;
 550
 551         *)
 552             echo "Unsupported cross arch $cross_arch"
 553             exit 1
 554             ;;
 555     esac
 556
 557     # Export variables used by Kbuild for cross compilation
 558     export ARCH="${karch}"
 559     export CROSS_COMPILE="${cross_compile}"
 560
 561 # Set arch specific values if we are not cross compiling
 562 elif [ "x${arch}" != "x" ]; then
 563
 564     case "$arch" in
 565         "i386")
 566             karch="x86"
 567             vanilla_config="allyesconfig"
 568             ubuntu_config="i386-config.flavour.generic"
 569             ;;
 570
 571         "amd64")
 572             karch="x86"
 573             vanilla_config="allyesconfig"
 574             ubuntu_config="amd64-config.flavour.generic"
 575             ;;
 576
 577         "armhf")
 578             karch="arm"
 579             vanilla_config="allyesconfig"
 580             ubuntu_config="armhf-config.flavour.generic"
 581             ;;
 582
 583         "arm64")
 584             karch="arm64"
 585             vanilla_config="allyesconfig"
 586             ubuntu_config="arm64-config.flavour.generic"
 587             ;;
 588
 589         "powerpc")
 590             karch="powerpc"
 591             vanilla_config="allyesconfig"
 592             ubuntu_config="powerpc-config.flavour.powerpc-smp"
 593             ;;
 594
 595         "ppc64el")
 596             karch="powerpc"
 597             vanilla_config="allyesconfig"
 598             ubuntu_config="ppc64el-config.flavour.generic"
 599             ;;
 600
 601         *)
 602             echo "Unsupported arch $arch"
 603             exit 1
 604             ;;
 605     esac
 606 else
 607     echo "No arch or cross_arch specified"
 608     exit 1
 609 fi
 610
 611
 612
 613 # First get the kernel build from the object store, or build it, if it's
 614 # not available.
 615
 616 echo "# Setup endpoint
 617 host_base = obj.internal.efficios.com
 618 host_bucket = obj.internal.efficios.com
 619 bucket_location = us-east-1
 620 use_https = True
 621
 622 # Setup access keys
 623 access_key = jenkins
 624 secret_key = echo123456
 625
 626 # Enable S3 v4 signature APIs
 627 signature_v2 = False" > "$WORKSPACE/.s3cfg"
 628
 629 url_hash="$(echo -n "$kgitrepo" | md5sum | awk '{ print $1 }')"
 630 obj_name="linux.tar.bz2"
 631
 632 if [ "x${cross_arch}" = "x" ]; then
 633         obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/$arch/native"
 634 else
 635         obj_url_prefix="$OBJ_STORE_URL/linux-build/$url_hash/$ktag/${cross_arch}"
 636 fi
 637
 638 obj_url="$obj_url_prefix/$obj_name"
 639
 640 set +e
 641 s3cmd -c "$WORKSPACE/.s3cfg" get "$obj_url"
 642 ret=$?
 643 set -e
 644
 645 case "$ret" in
 646     "0")
 647       extract_archive_obj
 648       ;;
 649
 650     "12")
 651       echo "File not found"
 652
 653       # Build all the things and upload
 654       # then finish the module build...
 655
 656       git_clone_linux_sources
 657       git_export_linux_sources
 658
 659       select_compiler
 660
 661       ## PREPARE FULL LINUX SOURCE TREE
 662       build_linux_kernel
 663
 664       ## EXTRACT DISTRO STYLE KERNEL HEADERS / DEVEL
 665       extract_distro_headers
 666
 667       tar_archive_obj
 668
 669       upload_archive_obj
 670
 671       ;;
 672
 673     *)
 674       echo "Unknown error? Abort"
 675       exit 1
 676       ;;
 677 esac
 678
 679 select_compiler
 680
 681 ## BUILD modules
 682 # Either we downloaded a pre-build kernel or we built it and uploaded
 683 # the archive for future builds.
 684
 685 cd "$WORKSPACE"
 686
 687 # Build modules against full kernel sources
 688 build_modules "${LINUX_SRCOBJ_DIR}" "${MODULES_OUTPUT_KSRC_DIR}"
 689
 690 # Build modules against kernel headers
 691 build_modules "${LINUX_HDROBJ_DIR}" "${MODULES_OUTPUT_KHDR_DIR}"
 692
 693 # Make sure some modules were actually built
 694 tree "${MODULES_OUTPUT_KSRC_DIR}"
 695 if [ "x$(find "${MODULES_OUTPUT_KSRC_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 696   echo "No modules built!"
 697   exit 1
 698 fi
 699
 700 tree "${MODULES_OUTPUT_KHDR_DIR}"
 701 if [ "x$(find "${MODULES_OUTPUT_KHDR_DIR}" -name '*.ko*' -printf yes -quit)" != "xyes" ]; then
 702   echo "No modules built!"
 703   exit 1
 704 fi
 705
 706 # EOF