Jean-Baptiste Queru | 3681bfd | 2012-01-05 13:30:23 -0800 | [diff] [blame] | 1 | #!/bin/sh |
| 2 | # |
| 3 | # Copyright (C) 2011 The Android Open Source Project |
| 4 | # |
| 5 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | # you may not use this file except in compliance with the License. |
| 7 | # You may obtain a copy of the License at |
| 8 | # |
| 9 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | # |
| 11 | # Unless required by applicable law or agreed to in writing, software |
| 12 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | # See the License for the specific language governing permissions and |
| 15 | # limitations under the License. |
| 16 | # |
| 17 | |
| 18 | # This script is used to rebuild the Android goldfish arm-based kernel from |
| 19 | # sources. |
| 20 | |
| 21 | ### |
| 22 | ### Utilities |
| 23 | ### |
| 24 | |
| 25 | # Implementation of 'dirname' that works safely when paths contains spaces |
| 26 | # $1: output variable name |
| 27 | # $2: path (may contain spaces) |
| 28 | # Usage: set_dirname FOO "/path/to/foo with spaces" |
| 29 | set_dirname () |
| 30 | { |
| 31 | eval $1="`dirname \"$2\"`" |
| 32 | } |
| 33 | |
| 34 | # Same as set_dirname, but for the 'basename' command |
| 35 | set_basename () |
| 36 | { |
| 37 | eval $1="`basename \"$2\"`" |
| 38 | } |
| 39 | |
| 40 | # Check the status of the previous command, and print a message and exit |
| 41 | # if it didn't succeed. |
| 42 | fail_panic () |
| 43 | { |
| 44 | if [ $? != 0 ]; then |
| 45 | echo "ERROR: $@" |
| 46 | exit 1 |
| 47 | fi |
| 48 | } |
| 49 | |
| 50 | # Send a message to the log. Does nothing if --verbose is not used |
| 51 | log () |
| 52 | { |
| 53 | if [ "$VERBOSE" = "yes" ] ; then |
| 54 | echo "$@" |
| 55 | fi |
| 56 | } |
| 57 | |
| 58 | # Run a comment. Print it to the output first if --verbose is used |
| 59 | run () |
| 60 | { |
| 61 | if [ "$VERBOSE" = "yes" ] ; then |
| 62 | echo "### COMMAND: $@" |
| 63 | $@ |
| 64 | else |
| 65 | $@ >/dev/null 2>&1 |
| 66 | fi |
| 67 | } |
| 68 | |
| 69 | fail_ifnotdir () |
| 70 | { |
| 71 | local _dir="$1" |
| 72 | if [ ! -d "$_dir" ]; then |
| 73 | shift |
| 74 | echo "ERROR: $@ ($_dir)" |
| 75 | exit 1 |
| 76 | fi |
| 77 | } |
| 78 | |
| 79 | # Check wether program '$2' is in your path, and set variable $1 to its |
| 80 | # full path, or to empty otherwise. |
| 81 | # Example: find_program FOO foo |
| 82 | # |
| 83 | # $1: Variable name |
| 84 | # $2: Program name |
| 85 | find_program () |
| 86 | { |
| 87 | local FINDPROG_=`which $2 2>/dev/null` |
| 88 | if [ -n "$FINDPROG_" ]; then |
| 89 | eval $1="$FINDPROG_"; |
| 90 | else |
| 91 | eval $1= |
| 92 | fi |
| 93 | } |
| 94 | |
| 95 | set_dirname PROGDIR "$0" |
| 96 | set_basename PROGNAME "$0" |
| 97 | |
| 98 | ### |
| 99 | ### Get defaults |
| 100 | ### |
| 101 | |
| 102 | # Location of prebuilt kernel images relative to Android top-level |
Kenny Root | 9920399 | 2012-09-14 14:36:17 -0700 | [diff] [blame] | 103 | PREBUILT_KERNEL_DIR="prebuilts/qemu-kernel/arm" |
Jean-Baptiste Queru | 3681bfd | 2012-01-05 13:30:23 -0800 | [diff] [blame] | 104 | |
| 105 | # Look for top-level Android build source tree if not in environment |
| 106 | |
| 107 | if [ -n "$ANDROID_BUILD_TOP" ] ; then |
| 108 | OUT_DIR="$ANDROID_BUILD_TOP/$PREBUILT_KERNEL_DIR" |
| 109 | else |
| 110 | OUT_DIR= |
| 111 | fi |
| 112 | |
| 113 | TOOLCHAIN_NAME=arm-eabi-4.4.0 |
| 114 | TOOLCHAIN_PREFIX=arm-eabi |
| 115 | GCC="$TOOLCHAIN_PREFIX-gcc" |
| 116 | |
| 117 | JOBS="`cat /proc/cpuinfo | grep -e "^processor" | wc -l`" |
| 118 | |
| 119 | ### |
| 120 | ### Parse options |
| 121 | ### |
| 122 | OPTION_HELP=no |
| 123 | VERBOSE=no |
| 124 | VERBOSE2=no |
| 125 | OPTION_OUT_DIR= |
| 126 | OPTION_CC= |
| 127 | |
| 128 | PARAMS="" |
| 129 | |
| 130 | for opt do |
| 131 | optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'` |
| 132 | case "$opt" in |
| 133 | --help|-h|-\?) OPTION_HELP=yes |
| 134 | ;; |
| 135 | --verbose) |
| 136 | if [ "$VERBOSE" = "yes" ] ; then |
| 137 | VERBOSE2=yes |
| 138 | else |
| 139 | VERBOSE=yes |
| 140 | fi |
| 141 | ;; |
| 142 | --out-dir=*) |
| 143 | OPTION_OUT_DIR="$optarg" |
| 144 | ;; |
| 145 | --cc=*) |
| 146 | OPTION_CC="$optarg" |
| 147 | ;; |
| 148 | --toolchain=*) |
| 149 | TOOLCHAIN_NAME="$optarg" |
| 150 | ;; |
| 151 | --jobs=*) |
| 152 | JOBS="$optarg" |
| 153 | ;; |
| 154 | -*) |
| 155 | echo "unknown option '$opt', use --help" |
| 156 | exit 1 |
| 157 | ;; |
| 158 | *) |
| 159 | if [ -z "$PARAMS" ] ; then |
| 160 | PARAMS="$opt" |
| 161 | else |
| 162 | PARAMS="$PARAMS $opt" |
| 163 | fi |
| 164 | ;; |
| 165 | esac |
| 166 | done |
| 167 | |
| 168 | if [ "$OPTION_HELP" = "yes" ] ; then |
| 169 | echo "Usage: $PROGNAME <options> /path/to/kernel" |
| 170 | echo "" |
| 171 | echo "Rebuild the prebuilt Android goldfish-specific kernel from sources." |
| 172 | echo "" |
| 173 | echo "Options (default are inside brackets):" |
| 174 | echo "" |
| 175 | echo " --help Print this message." |
| 176 | echo " --verbose Enable verbose output." |
| 177 | echo " --android=<path> Set Android top-level directory [$ANDROID_BUILD_TOP]" |
| 178 | echo " --out-dir=<path> Set output directory [$OUT_DIR]" |
| 179 | echo " --toolchain=<name> Toolchain name [$TOOLCHAIN_NAME]" |
| 180 | echo " --cc=<path> Path to C compiler [$GCC]" |
| 181 | echo " --jobs=<count> Perform <count> parallel builds [$JOBS]" |
| 182 | echo "" |
| 183 | echo "The --toolchain option is ignored if you use the --cc one." |
| 184 | exit 0 |
| 185 | fi |
| 186 | |
| 187 | ### |
| 188 | ### Parse parameters |
| 189 | ### |
| 190 | |
| 191 | set_parameters () |
| 192 | { |
| 193 | if [ -z "$1" ] ; then |
| 194 | echo "ERROR: Please specify path of kernel sources directory. See --help for details." |
| 195 | exit 1 |
| 196 | fi |
| 197 | if [ -n "$2" ]; then |
| 198 | echo "ERROR: Too many arguments. See --help for details." |
| 199 | exit 1 |
| 200 | fi |
| 201 | KERNEL_DIR="$1" |
| 202 | fail_ifnotdir "$KERNEL_DIR" "Missing kernel directory" |
| 203 | fail_ifnotdir "$KERNEL_DIR/kernel" "Missing kernel-specific directory" |
| 204 | fail_ifnotdir "$KERNEL_DIR/arch" "Missing kernel-specific directory" |
| 205 | fail_ifnotdir "$KERNEL_DIR/arch/arm/mach-goldfish" "Missing goldfish-specific directory" |
| 206 | } |
| 207 | |
| 208 | set_parameters $PARAMS |
| 209 | |
| 210 | ### |
| 211 | ### Determine build configuration |
| 212 | ### |
| 213 | |
| 214 | if [ -n "$OPTION_OUT_DIR" ] ; then |
| 215 | OUT_DIR="$OPTION_OUT_DIR" |
| 216 | fi |
| 217 | |
| 218 | if [ -z "$ANDROID_BUILD_TOP" ] ; then |
| 219 | # Assume that we are under $ANDROID_BUILD_TOP/prebuilt/android-arm/kernel |
| 220 | ANDROID_BUILD_TOP="`cd \"$PROGDIR\"/../../.. && pwd`" |
| 221 | if [ -d "$ANDROID_BUILD_TOP" ]; then |
| 222 | echo "Probed Android top-level directory: $ANDROID_BUILD_TOP" |
| 223 | else |
| 224 | echo "ERROR: Can't find Android top-leveld directory. Please define ANDROID_BUILD_TOP" |
| 225 | exit 1 |
| 226 | fi |
| 227 | fi |
| 228 | |
| 229 | if [ -z "$OUT_DIR" ] ; then |
| 230 | OUT_DIR="$ANDROID_BUILD_TOP/$PREBUILT_KERNEL_DIR" |
| 231 | if [ ! -d "$OUT_DIR" ]; then |
| 232 | echo "ERROR: Missing default output dir: $OUT_DIR" |
| 233 | echo "Please use --out-dir=<path> to specify alternative output directory." |
| 234 | exit 1 |
| 235 | fi |
| 236 | fi |
| 237 | |
| 238 | echo "Using output directory: $OUT_DIR" |
| 239 | mkdir -p "$OUT_DIR" |
| 240 | fail_panic "Could not create directory: $OUT_DIR" |
| 241 | |
| 242 | # Find toolchain |
| 243 | |
| 244 | if [ -n "$OPTION_CC" ]; then |
| 245 | GCC="$OPTION_CC" |
| 246 | else |
| 247 | find_program GCC $TOOLCHAIN_PREFIX-gcc |
| 248 | fi |
| 249 | |
| 250 | if [ -z "$GCC" ]; then |
| 251 | TOOLCHAIN_DIR="$ANDROID_BUILD_TOP/prebuilt/linux-x86/toolchain/$TOOLCHAIN_NAME/bin" |
| 252 | if [ ! -d "$TOOLCHAIN_DIR" ] ; then |
| 253 | echo "ERROR: Missing directory: $TOOLCHAIN_DIR" |
| 254 | exit 1 |
| 255 | fi |
| 256 | GCC="$TOOLCHAIN_DIR/$TOOLCHAIN_PREFIX-gcc" |
| 257 | if [ ! -f "$GCC" ] ; then |
| 258 | echo "ERROR: Missing program file: $GCC" |
| 259 | exit 1 |
| 260 | fi |
| 261 | fi |
| 262 | |
| 263 | CROSS_COMPILE="`echo $GCC | sed -e 's!gcc$!!g' `" |
| 264 | echo "Using cross-toolchain prefix: $CROSS_COMPILE" |
| 265 | |
| 266 | # Do we have ccache in our path? |
| 267 | find_program CCACHE ccache |
| 268 | if [ -n "$CCACHE" ]; then |
| 269 | echo "Using ccache program: $CCACHE" |
| 270 | CROSS_COMPILE="ccache $CROSS_COMPILE" |
| 271 | fi |
| 272 | |
| 273 | ### |
| 274 | ### Do the build |
| 275 | ### |
| 276 | |
| 277 | cd "$KERNEL_DIR" |
| 278 | ARCH=arm |
| 279 | SUBARCH=arm |
| 280 | |
| 281 | export CROSS_COMPILE ARCH SUBARCH |
| 282 | |
| 283 | # $1: defconfig name (e.g. goldfish or goldfish_armv7) |
| 284 | # $2: output suffix (e.g. "" or "-armv7") |
| 285 | do_build () |
| 286 | { |
| 287 | MAKE_FLAGS="-j$JOBS" |
| 288 | # Use --verbose --verbose to see build commands |
| 289 | if [ "$VERBOSE2" = "yes" ] ; then |
| 290 | MAKE_FLAGS="$MAKE_FLAGS V=1" |
| 291 | fi |
| 292 | echo "Cleaning up source tree." |
| 293 | git ls-files -o | xargs rm -f |
| 294 | echo "Setting up $1_defconfig..." |
| 295 | run make $1_defconfig |
| 296 | fail_panic "Could not setup $1_defconfig build!" |
| 297 | echo "Building $1_deconfig..." |
| 298 | run make $MAKE_FLAGS |
| 299 | fail_panic "Could not build $1_defconfig!" |
| 300 | echo "Copying $1_defconfig binaries to $OUT_DIR." |
| 301 | cp -f arch/arm/boot/zImage "$OUT_DIR/kernel-qemu$2" |
| 302 | cp -f vmlinux "$OUT_DIR/vmlinux-qemu$2" |
| 303 | } |
| 304 | |
| 305 | do_build goldfish |
| 306 | if [ -f arch/arm/configs/goldfish_armv7_defconfig ]; then |
| 307 | do_build goldfish_armv7 -armv7 |
| 308 | fi |
| 309 | |
| 310 | echo "Done." |
| 311 | exit 0 |