| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| function exit_if_error { |
| if [ $1 -ne 0 ]; then |
| echo "ERROR: $2: retval=$1" >&2 |
| exit $1 |
| fi |
| } |
| |
| function add_boot_hash_footer { |
| eval `grep "\<BUILD_GKI_BOOT_IMG_LZ4_SIZE=" aosp/build.config.gki.aarch64` |
| local spl_month=$((($(date +'%m') + 3) % 12)) |
| local spl_year="$(date +'%Y')" |
| if [ $((${spl_month} % 3)) -gt 0 ]; then |
| # Round up to the next quarterly platform release (QPR) month |
| spl_month=$((${spl_month} + 3 - (${spl_month} % 3))) |
| fi |
| if [ "${spl_month}" -lt "$(date +'%m')" ]; then |
| # rollover to the next year |
| spl_year="$((${spl_year} + 1))" |
| fi |
| local spl_date=$(printf "%d-%02d-05\n" ${spl_year} ${spl_month}) |
| |
| local additional_props="" |
| if [ -n "${spl_date}" ]; then |
| additional_props="--prop com.android.build.boot.security_patch:${spl_date}" |
| fi |
| |
| build/kernel/build-tools/path/linux-x86/avbtool add_hash_footer \ |
| --image ${DIST_DIR}/boot.img \ |
| --partition_name boot \ |
| --partition_size ${BUILD_GKI_BOOT_IMG_LZ4_SIZE} \ |
| ${additional_props} |
| } |
| |
| BUILD_STAGING_KERNEL=${BUILD_STAGING_KERNEL:-0} |
| TRIM_NONLISTED_KMI=${TRIM_NONLISTED_KMI:-1} |
| LTO=${LTO:-thin} |
| KMI_SYMBOL_LIST_STRICT_MODE=${ENABLE_STRICT_KMI:-1} |
| DEFAULT_CONFIG="private/gs-google/build.config.slider" |
| DEVICE_KERNEL_BUILD_CONFIG=${DEVICE_KERNEL_BUILD_CONFIG:-${DEFAULT_CONFIG}} |
| GKI_KERNEL_PREBUILTS_DIR= |
| GKI_KERNEL_BUILD_CONFIG= |
| GKI_KERNEL_OUT_DIR= |
| CHECK_DIRTY_AOSP=0 |
| MAKE_CORE_KERNEL=0 |
| if [ "${BUILD_AOSP_KERNEL}" = "1" -o "${BUILD_STAGING_KERNEL}" = "1" -o -n "${GKI_DEFCONFIG_FRAGMENT}" ]; then |
| MAKE_CORE_KERNEL=1 |
| else |
| CHECK_DIRTY_AOSP=1 |
| MAKE_CORE_KERNEL=0 |
| fi |
| |
| if [ "${MAKE_CORE_KERNEL}" = "0" ]; then |
| USING_PREBUILTS=1 |
| GKI_KERNEL_PREBUILTS_DIR=$(readlink -m "prebuilts/boot-artifacts/kernel/") |
| else |
| USING_PREBUILTS= |
| if [ "${BUILD_STAGING_KERNEL}" = "1" ]; then |
| GKI_KERNEL_OUT_DIR=android13-5.10-pixel-staging |
| GKI_KERNEL_BUILD_CONFIG=aosp-staging/build.config.gki.aarch64 |
| else |
| GKI_KERNEL_OUT_DIR=android13-5.10 |
| GKI_KERNEL_BUILD_CONFIG=aosp/build.config.gki.aarch64 |
| fi |
| fi |
| |
| if [ "${LTO}" = "none" ]; then |
| echo "LTO=none requires disabling KMI_SYMBOL_STRICT_MODE. Setting to 0..." |
| KMI_SYMBOL_LIST_STRICT_MODE=0 |
| fi |
| |
| if [ -n "${BUILD_ABI}" ]; then |
| echo "The ABI update workflow has changed. Please read go/gki-p21-workflow" |
| echo " for instructions on updating ABI/symbol list." |
| exit_if_error 1 "BUILD_ABI is deprecated" |
| fi |
| |
| if [ "${MAKE_CORE_KERNEL}" = "0" ]; then |
| if [ "${LTO}" = "none" ]; then |
| echo "LTO=none requires BUILD_AOSP_KERNEL=1, BUILD_STAGING_KERNEL=1, or" |
| echo " GKI_DEFCONFIG_FRAGMENT to be set." |
| exit_if_error 1 "LTO=none requires building the kernel" |
| fi |
| elif [ "${BUILD_AOSP_KERNEL}" = "1" -a "${BUILD_STAGING_KERNEL}" = "1" ]; then |
| echo "BUILD_AOSP_KERNEL=1 is incompatible with BUILD_STAGING_KERNEL." |
| exit_if_error 1 "Flags incompatible with BUILD_AOSP_KERNEL detected" |
| fi |
| |
| # These are for build.sh, so they should be exported. |
| export LTO |
| export KMI_SYMBOL_LIST_STRICT_MODE |
| export TRIM_NONLISTED_KMI |
| export BASE_OUT=${OUT_DIR:-out}/mixed/ |
| export DIST_DIR=${DIST_DIR:-${BASE_OUT}/dist/} |
| export USING_PREBUILTS |
| |
| DEVICE_KERNEL_BUILD_CONFIG=${DEVICE_KERNEL_BUILD_CONFIG} \ |
| GKI_KERNEL_BUILD_CONFIG=${GKI_KERNEL_BUILD_CONFIG} \ |
| GKI_KERNEL_OUT_DIR=${GKI_KERNEL_OUT_DIR} \ |
| GKI_KERNEL_PREBUILTS_DIR=${GKI_KERNEL_PREBUILTS_DIR} \ |
| GKI_DEFCONFIG_FRAGMENT=${GKI_DEFCONFIG_FRAGMENT} \ |
| ./build_mixed.sh "$@" |
| |
| exit_if_error $? "Failed to create mixed build" |
| |
| if [ -n "${USING_PREBUILTS}" ]; then |
| # Add an SPL to the prebuilt boot image so that you don't have to wipe your |
| # device when flashing. This is handled already when building the kernel. |
| add_boot_hash_footer |
| fi |
| |
| if [ -f ${GKI_KERNEL_PREBUILTS_DIR}/vmlinux ]; then |
| SHA_FILE=vmlinux |
| else |
| SHA_FILE=boot.img |
| fi |
| |
| # If BUILD_AOSP_KERNEL and BUILD_STAGING_KERNEL is not explicitly set, |
| # be sure that there are no aosp/ changes not present in the prebuilt. |
| if [ "${CHECK_DIRTY_AOSP}" != "0" ]; then |
| PREBUILTS_SHA=$(strings ${GKI_KERNEL_PREBUILTS_DIR}/${SHA_FILE} | |
| grep "Linux version 5.10" | |
| sed -n "s/^.*-g\([0-9a-f]\{12\}\)-.*/\1/p") |
| pushd aosp/ > /dev/null |
| # The AOSP sha can sometimes be longer than 12 characters; fix its length. |
| AOSP_SHA=$(git log -1 --abbrev=12 --pretty="format:%h") |
| if [ "${PREBUILTS_SHA}" != "${AOSP_SHA}" -o -n \ |
| "$(git --no-optional-locks status -uno --porcelain || |
| git diff-index --name-only HEAD)" ]; then |
| echo "WARNING: There are aosp/ changes which are not in the prebuilts." |
| echo " Because you did not specify BUILD_AOSP_KERNEL/BUILD_STAGING_KERNEL=0" |
| echo " or 1, $0 defaulted to building with" |
| echo " the prebuilts. Please be aware that your changes to aosp/ will not" |
| echo " be present in the final images. If you have made changes to aosp/," |
| echo " it is recommended to explicitly set BUILD_AOSP_KERNEL/BUILD_STAGING_KERNEL=0" |
| echo " if you wish to use the prebuilts, or to 1 if you wish to build any" |
| echo " local changes you may have." |
| fi |
| popd > /dev/null |
| fi |