kernel/scripts/configure

   1 #!/bin/bash
   2 ###############################################################################
   3 # IPFire.org    - An Open Source Firewall Solution                            #
   4 # Copyright (C) - IPFire Development Team <info@ipfire.org>                   #
   5 ###############################################################################
   6
   7 BASEDIR=$(dirname ${0})
   8 SCRIPTS_DIR=${BASEDIR}
   9
  10 # x86_64
  11 CONFIGS="x86_64:default"
  12
  13 # i686
  14 CONFIGS="${CONFIGS} i686:legacy i686:default"
  15
  16 # aarch64
  17 CONFIGS="${CONFIGS} aarch64:default"
  18
  19 # armv7hl
  20 CONFIGS="${CONFIGS} armv7hl:default"
  21
  22 PLATFORMS="x86 arm"
  23 declare -A SUBPLATFORMS
  24 SUBPLATFORMS=(
  25         [arm]="arm64 arm32"
  26 )
  27
  28 function get_platform() {
  29         local arch="${1}"
  30
  31         case "${arch}" in
  32                 aarch64|arm*)
  33                         echo "arm"
  34                         ;;
  35                 x86_64|i?86)
  36                         echo "x86"
  37                         ;;
  38                 *)
  39                         return 1
  40                         ;;
  41         esac
  42 }
  43
  44 function get_subplatform() {
  45         local arch="${1}"
  46
  47         case "${arch}" in
  48                 aarch64)
  49                         echo "arm64"
  50                         ;;
  51                 arm*)
  52                         echo "arm32"
  53                         ;;
  54                 *)
  55                         return 1
  56                         ;;
  57         esac
  58 }
  59
  60 function get_kernel_arch() {
  61         local arch="${1}"
  62
  63         case "${arch}" in
  64                 aarch64)
  65                         echo "arm64"
  66                         ;;
  67                 arm*)
  68                         echo "arm"
  69                         ;;
  70                 x86_64|i?86)
  71                         echo "x86"
  72                         ;;
  73         esac
  74 }
  75
  76 function merge_config() {
  77         local arch=${1}
  78         local flavour=${2}
  79         local output=${3}
  80         shift 3
  81
  82         local arg
  83         for arg in arch flavour output; do
  84                 if [ -z "${!arg}" ]; then
  85                         echo >&2 "merge usage: <arch> <flavour> <output filename>"
  86                         exit 2
  87                 fi
  88         done
  89
  90         local config_mode="oldnoconfig"
  91         local extra_configs
  92         while [ $# -gt 0 ]; do
  93                 case "${1}" in
  94                         --mode=*)
  95                                 config_mode=${1#--mode=}
  96                                 shift
  97                                 ;;
  98                         -*)
  99                                 echo >&2 "Unknown option: ${1}"
 100                                 ;;
 101                         *)
 102                                 extra_configs="${extra_configs} ${1}"
 103                                 ;;
 104                 esac
 105                 shift
 106         done
 107
 108         local configs="${extra_configs} config-generic"
 109
 110         case "${arch}:${flavour}" in
 111                 # x86
 112                 x86_64:default)
 113                         configs="${configs} config-x86-generic config-x86_64-default"
 114                         ;;
 115                 i686:default)
 116                         configs="${configs} config-x86-generic config-i686-default"
 117                         ;;
 118                 i686:legacy)
 119                         configs="${configs} config-x86-generic config-i686-default"
 120                         configs="${configs} config-i686-legacy"
 121                         ;;
 122
 123                 # ARM64
 124                 aarch64:default)
 125                         configs="${configs} config-arm-generic config-arm64-generic"
 126                         ;;
 127
 128                 # ARM
 129                 armv7hl:default)
 130                         configs="${configs} config-arm-generic config-arm32-generic"
 131                         ;;
 132                 *)
 133                         echo >&2 "ERROR: Invalid parameters given: $@"
 134                         return 1
 135                         ;;
 136         esac
 137
 138         # Merge the configuration files from its elementary configuration
 139         # files.
 140         local tmp_out=$(mktemp)
 141         local tmp_in=$(mktemp)
 142
 143         local config
 144         for config in ${configs}; do
 145                 cat ${tmp_out} > ${tmp_in}
 146                 perl ${SCRIPTS_DIR}/merge.pl \
 147                         ${config} ${tmp_in} > ${tmp_out}
 148         done
 149
 150         if [ "${config_mode}" != "none" ]; then
 151                 echo "Running 'make oldnoconfig' for ${arch} (${flavour})..."
 152                 local kernel_arch="$(get_kernel_arch "${arch}")"
 153                 (
 154                         cd ${KERNEL_DIR}
 155                         cat ${tmp_out} > .config
 156                         make ARCH="${kernel_arch}" ${config_mode}
 157                         cat .config > ${tmp_out}
 158                 )
 159         fi
 160
 161         cat ${tmp_out} > ${output}
 162         rm -f ${tmp_in} ${tmp_out}
 163 }
 164
 165 # This function runs an interactive "make oldconfig".
 166 function make_oldconfig() {
 167         local arch="x86_64"
 168         local kernel_arch="x86"
 169         local flavour="default"
 170
 171         local config_in=$(mktemp)
 172         local config_out=$(mktemp)
 173         local diff_out=$(mktemp)
 174
 175         merge_config ${arch} ${flavour} ${config_in} --mode=none
 176
 177         (
 178                 cd ${KERNEL_DIR}
 179                 cat ${config_in} > .config
 180
 181                 echo "You may now edit the configuration..."
 182
 183                 local option
 184                 select option in oldconfig menuconfig oldnoconfig startover quit; do
 185                         case "${option}" in
 186                                 oldconfig|menuconfig|oldnoconfig)
 187                                         make ARCH=${kernel_arch} ${option}
 188                                         ;;
 189                                 startover)
 190                                         cat ${config_in} > .config
 191                                         ;;
 192                                 quit)
 193                                         break
 194                                         ;;
 195                         esac
 196                 done
 197
 198                 cat .config > ${config_out}
 199         )
 200
 201         ${SCRIPTS_DIR}/configdiff.py ${config_in} ${config_out} > ${diff_out}
 202
 203         # Update the rest of the configurations.
 204         diff_configs ${diff_out} --mode=oldconfig
 205
 206         rm -f ${config_in} ${config_out} ${diff_out}
 207 }
 208
 209 # config-generic
 210 #  Intersection of all files.
 211 # config-x86-generic
 212 #  Diff of (intersection of (i686-{default,legacy} and x86_64-default)
 213 #  against config-generic).
 214 # config-x86-x86_64
 215 #  Diff against merge of (config-generic and config-x86-generic).
 216
 217 function diff_configs() {
 218         local extra_configs="$@"
 219
 220         local filename
 221         local platform
 222         local subplatform
 223
 224         declare -A platform_configs
 225         declare -A subplatform_configs
 226
 227         tmpdir=$(mktemp -d)
 228
 229         for config in ${CONFIGS}; do
 230                 arch=${config%:*}
 231                 flavour=${config#*:}
 232
 233                 filename=${tmpdir}/config-${arch}-${flavour}
 234
 235                 merge_config ${arch} ${flavour} ${filename} ${extra_configs}
 236
 237                 # Do not include leaf configuration.
 238                 case "${config}" in
 239                         i686:legacy)
 240                                 continue
 241                                 ;;
 242                 esac
 243
 244                 platform="$(get_platform "${arch}")"
 245                 subplatform="$(get_subplatform "${arch}")"
 246
 247                 if [ -n "${subplatform}" ]; then
 248                         subplatform_configs[${subplatform}]="${subplatform_configs[${subplatform}]} ${filename}"
 249                 else
 250                         platform_configs[${platform}]="${platform_configs[${platform}]} ${filename}"
 251                 fi
 252         done
 253
 254         local common_configs
 255         for platform in ${PLATFORMS}; do
 256                 for subplatform in ${SUBPLATFORMS[${platform}]}; do
 257                         filename="${tmpdir}/config-${subplatform}-common"
 258                         ${SCRIPTS_DIR}/configcommon.py ${subplatform_configs[${subplatform}]} \
 259                                 > ${filename}
 260
 261                         platform_configs[${platform}]="${platform_configs[${platform}]} ${filename}"
 262                 done
 263
 264                 filename="${tmpdir}/config-${platform}-common"
 265                 ${SCRIPTS_DIR}/configcommon.py ${platform_configs[${platform}]} \
 266                         > ${filename}
 267
 268                 common_configs="${common_configs} ${filename}"
 269         done
 270
 271         ${SCRIPTS_DIR}/configcommon.py ${common_configs} > ${tmpdir}/config-generic
 272
 273         for platform in ${PLATFORMS}; do
 274                 for subplatform in ${SUBPLATFORMS[${platform}]}; do
 275                         ${SCRIPTS_DIR}/configdiff.py \
 276                                 ${tmpdir}/config-${platform}-common \
 277                                 ${tmpdir}/config-${subplatform}-common \
 278                                 > ${tmpdir}/config-${subplatform}-generic
 279                 done
 280
 281                 ${SCRIPTS_DIR}/configdiff.py \
 282                         ${tmpdir}/config-generic \
 283                         ${tmpdir}/config-${platform}-common \
 284                         > ${tmpdir}/config-${platform}-generic
 285         done
 286
 287         for config in ${CONFIGS}; do
 288                 arch=${config%:*}
 289                 flavour=${config#*:}
 290
 291                 filename=${tmpdir}/config-${arch}-${flavour}
 292
 293                 case "${config}" in
 294                         aarch64:default|armv7hl:default)
 295                                 # Virtual configuration
 296                                 rm -f ${filename}
 297                                 continue
 298                                 ;;
 299                         i686:legacy)
 300                                 # Legacy depends directly on the default configuration.
 301                                 ${SCRIPTS_DIR}/configdiff.py ${tmpdir}/config-${arch}-default \
 302                                         ${filename} > ${filename}.tmp
 303                                 ;;
 304                         *)
 305                                 platform="$(get_subplatform "${arch}" || get_platform "${arch}")"
 306                                 ${SCRIPTS_DIR}/configdiff.py ${tmpdir}/config-${platform}-common \
 307                                         ${filename} > ${filename}.tmp
 308                                 ;;
 309                 esac
 310                 mv ${filename}{.tmp,}
 311         done
 312         rm -f ${tmpdir}/config-*-common
 313
 314         for config in ${tmpdir}/*; do
 315                 if ! cmp $(basename ${config}) ${config} &>/dev/null; then
 316                         echo "$(basename ${config}) has changed."
 317                 fi
 318                 cat ${config} > $(basename ${config})
 319         done
 320
 321         rm -rf ${tmpdir}
 322 }
 323
 324 KERNEL_DIR=
 325
 326 # Parse commandline.
 327 while [ $# -gt 0 ]; do
 328         arg=${1}; shift
 329         case "${arg}" in
 330                 --kernel-dir=*)
 331                         KERNEL_DIR=${arg#--kernel-dir=}
 332                         ;;
 333                 help|"")
 334                         echo "${0} - available commands:"
 335                         echo "    * merge <arch> <flavour> <output filename>"
 336                         echo "    * update ..."
 337                         echo "    * oldconfig"
 338                         echo ""
 339                         echo "    You must always set --kernel-dir=..."
 340                         exit 0
 341                         ;;
 342                 merge|oldconfig|update)
 343                         action=${arg}
 344                         break
 345                         ;;
 346         esac
 347 done
 348
 349 if [ -z "${KERNEL_DIR}" ]; then
 350         echo >&2 "--kernel-dir=... was not set!"
 351         exit 2
 352 fi
 353
 354 if [ -z "${action}" ]; then
 355         echo >&2 "No action given... Try ${0} help."
 356         exit 2
 357 fi
 358
 359 case "${action}" in
 360         merge)
 361                 merge_config $@
 362                 exit $?
 363                 ;;
 364         oldconfig)
 365                 make_oldconfig
 366                 exit $?
 367                 ;;
 368         update)
 369                 diff_configs $@
 370                 exit $?
 371                 ;;
 372 esac
 373
 374 exit 1