scripts/multiconfig.sh

   1 #!/bin/sh
   2 #
   3 # A wrapper script to adjust Kconfig for U-Boot
   4 #
   5 # Instead of touching various parts under the scripts/kconfig/ directory,
   6 # pushing necessary adjustments into this single script would be better
   7 # for code maintainance.  All the make targets related to the configuration
   8 # (make %config) should be invoked via this script.
   9 # See doc/README.kconfig for further information of Kconfig.
  10 #
  11 # Copyright (C) 2014, Masahiro Yamada <yamada.m@jp.panasonic.com>
  12 #
  13 # SPDX-License-Identifier:      GPL-2.0+
  14 #
  15
  16 set -e
  17
  18 # Set "DEBUG" enavironment variable to show debug messages
  19 debug () {
  20         if [ $DEBUG ]; then
  21                 echo "$@"
  22         fi
  23 }
  24
  25 # Useful shorthands
  26 build () {
  27         debug $progname: $MAKE -f $srctree/scripts/Makefile.build obj="$@"
  28         $MAKE -f $srctree/scripts/Makefile.build obj="$@"
  29 }
  30
  31 autoconf () {
  32         debug $progname: $MAKE -f $srctree/scripts/Makefile.autoconf obj="$@"
  33         $MAKE -f $srctree/scripts/Makefile.autoconf obj="$@"
  34 }
  35
  36 # Make a configuration target
  37 # Usage:
  38 #   run_make_config <target> <objdir>
  39 # <target>: Make target such as "config", "menuconfig", "defconfig", etc.
  40 # <objdir>: Target directory where the make command is run.
  41 #           Typically "", "spl", "tpl" for Normal, SPL, TPL, respectively.
  42 run_make_config () {
  43         target=$1
  44         objdir=$2
  45
  46         # Linux expects defconfig files in arch/$(SRCARCH)/configs/ directory,
  47         # but U-Boot has them in configs/ directory.
  48         # Give SRCARCH=.. to fake scripts/kconfig/Makefile.
  49         options="SRCARCH=.. KCONFIG_OBJDIR=$objdir"
  50         if [ "$objdir" ]; then
  51                 options="$options KCONFIG_CONFIG=$objdir/$KCONFIG_CONFIG"
  52                 mkdir -p $objdir
  53         fi
  54
  55         build scripts/kconfig $options $target
  56 }
  57
  58 # Parse .config file to detect if CONFIG_SPL, CONFIG_TPL is enabled
  59 # and returns:
  60 #   ""        if neither CONFIG_SPL nor CONFIG_TPL is defined
  61 #   "spl"     if CONFIG_SPL is defined but CONFIG_TPL is not
  62 #   "spl tpl" if both CONFIG_SPL and CONFIG_TPL are defined
  63 get_enabled_subimages() {
  64         if [ ! -r "$KCONFIG_CONFIG" ]; then
  65                 # This should never happen
  66                 echo "$progname: $KCONFIG_CONFIG not found" >&2
  67                 exit 1
  68         fi
  69
  70         # CONFIG_SPL=y -> spl
  71         # CONFIG_TPL=y -> tpl
  72         sed -n -e 's/^CONFIG_\(SPL\|TPL\)=y$/\1/p' $KCONFIG_CONFIG | \
  73                                                         tr '[A-Z]' '[a-z]'
  74 }
  75
  76 do_silentoldconfig () {
  77         run_make_config silentoldconfig
  78         subimages=$(get_enabled_subimages)
  79
  80         for obj in $subimages
  81         do
  82                 mkdir -p $obj/include/config $obj/include/generated
  83                 run_make_config silentoldconfig $obj
  84         done
  85
  86         # If the following part fails, include/config/auto.conf should be
  87         # deleted so "make silentoldconfig" will be re-run on the next build.
  88         autoconf include include/autoconf.mk include/autoconf.mk.dep || {
  89                 rm -f include/config/auto.conf
  90                 exit 1
  91         }
  92
  93         # include/config.h has been updated after "make silentoldconfig".
  94         # We need to touch include/config/auto.conf so it gets newer
  95         # than include/config.h.
  96         # Otherwise, 'make silentoldconfig' would be invoked twice.
  97         touch include/config/auto.conf
  98
  99         for obj in $subimages
 100         do
 101                 autoconf $obj/include $obj/include/autoconf.mk || {
 102                         rm -f include/config/auto.conf
 103                         exit 1
 104                 }
 105         done
 106 }
 107
 108 cleanup_after_defconfig () {
 109         rm -f configs/.tmp_defconfig
 110         # ignore 'Directory not empty' error
 111         # without using non-POSIX option '--ignore-fail-on-non-empty'
 112         rmdir arch configs 2>/dev/null || true
 113 }
 114
 115 # Usage:
 116 #  do_board_defconfig <board>_defconfig
 117 do_board_defconfig () {
 118         defconfig_path=$srctree/configs/$1
 119         tmp_defconfig_path=configs/.tmp_defconfig
 120
 121         if [ ! -r $defconfig_path ]; then
 122                 echo >&2 "***"
 123                 echo >&2 "*** Can't find default configuration \"confis/$1\"!"
 124                 echo >&2 "***"
 125                 exit 1
 126         fi
 127
 128         mkdir -p arch configs
 129         # defconfig for Normal:
 130         #  pick lines without prefixes and lines starting '+' prefix
 131         #  and rip the prefixes off.
 132         sed -n -e '/^[+A-Z]*:/!p' -e 's/^+[A-Z]*://p' $defconfig_path \
 133                                                 > configs/.tmp_defconfig
 134
 135         run_make_config .tmp_defconfig || {
 136                 cleanup_after_defconfig
 137                 exit 1
 138         }
 139
 140         for img in $(get_enabled_subimages)
 141         do
 142                 symbol=$(echo $img | cut -c 1 | tr '[a-z]' '[A-Z]')
 143                 # defconfig for SPL, TPL:
 144                 #   pick lines with 'S', 'T' prefix and rip the prefixes off
 145                 sed -n -e 's/^[+A-Z]*'$symbol'[A-Z]*://p' $defconfig_path \
 146                                                 > configs/.tmp_defconfig
 147                 run_make_config .tmp_defconfig $img || {
 148                         cleanup_after_defconfig
 149                         exit 1
 150                 }
 151         done
 152
 153         cleanup_after_defconfig
 154 }
 155
 156 do_defconfig () {
 157         if [ "$KBUILD_DEFCONFIG" ]; then
 158                 do_board_defconfig $KBUILD_DEFCONFIG
 159                 echo "*** Default configuration is based on '$KBUILD_DEFCONFIG'"
 160         else
 161                 run_make_config defconfig
 162         fi
 163 }
 164
 165 do_savedefconfig () {
 166         if [ -r "$KCONFIG_CONFIG" ]; then
 167                 subimages=$(get_enabled_subimages)
 168         else
 169                 subimages=
 170         fi
 171
 172         run_make_config savedefconfig
 173
 174         output_lines=
 175
 176         # -r option is necessay because some string-type configs may include
 177         # backslashes as an escape character
 178         while read -r line
 179         do
 180                 output_lines="$output_lines%$line"
 181         done < defconfig
 182
 183         for img in $subimages
 184         do
 185                 run_make_config savedefconfig $img
 186
 187                 symbol=$(echo $img | cut -c 1 | tr '[a-z]' '[A-Z]')
 188                 unmatched=
 189
 190                 while read -r line
 191                 do
 192                         tmp=
 193                         match=
 194
 195                         # "# CONFIG_FOO is not set" should not be divided.
 196                         # Use "%" as a separator, instead of a whitespace.
 197                         # "%" is unlikely to appear in defconfig context.
 198                         save_IFS=$IFS
 199                         IFS=%
 200                         # coalesce common lines together
 201                         for i in $output_lines
 202                         do
 203                                 case "$i" in
 204                                 [+A-Z]*:$line)
 205                                         tmp="$tmp%$unmatched"
 206                                         i=$(echo "$i" | \
 207                                             sed -e "s/^\([^:]*\)/\1$symbol/")
 208                                         tmp="$tmp%$i"
 209                                         match=1
 210                                         ;;
 211                                 $line)
 212                                         tmp="$tmp%$unmatched"
 213                                         tmp="$tmp%+$symbol:$i"
 214                                         match=1
 215                                         ;;
 216                                 *)
 217                                         tmp="$tmp%$i"
 218                                         ;;
 219                                 esac
 220                         done
 221
 222                         # Restore the default separator for the outer for loop.
 223                         IFS=$save_IFS
 224
 225                         if [ "$match" ]; then
 226                                 output_lines="$tmp"
 227                                 unmatched=
 228                         else
 229                                 unmatched="$unmatched%$symbol:$line"
 230                         fi
 231                 done < defconfig
 232         done
 233
 234         rm -f defconfig
 235         touch defconfig
 236
 237         save_IFS=$IFS
 238         IFS=%
 239
 240         for line in $output_lines
 241         do
 242                 case "$line" in
 243                 "")
 244                         # do not output blank lines
 245                         ;;
 246                 *)
 247                         echo $line >> defconfig
 248                         ;;
 249                 esac
 250         done
 251
 252         IFS=$save_IFS
 253 }
 254
 255 # Some sanity checks before running "make <objdir>/<target>",
 256 # where <objdir> should be either "spl" or "tpl".
 257 # Doing "make spl/menuconfig" etc. on a non-SPL board makes no sense.
 258 # It should be allowed only when ".config" exists and "CONFIG_SPL" is enabled.
 259 #
 260 # Usage:
 261 #   check_enabled_sumbimage <objdir>/<target> <objdir>
 262 check_enabled_subimage () {
 263
 264         case $2 in
 265         spl|tpl) ;;
 266         *)
 267                 echo >&2 "***"
 268                 echo >&2 "*** \"make $1\" is not supported."
 269                 echo >&2 "***"
 270                 exit 1
 271                 ;;
 272         esac
 273         test -r "$KCONFIG_CONFIG" && get_enabled_subimages | grep -q $2 || {
 274                 config=CONFIG_$(echo $2 | tr '[a-z]' '[A-Z]')
 275
 276                 echo >&2 "***"
 277                 echo >&2 "*** Create \"$KCONFIG_CONFIG\" with \"$config\" enabled"
 278                 echo >&2 "*** before \"make $1\"."
 279                 echo >&2 "***"
 280                 exit 1
 281         }
 282 }
 283
 284 # Usage:
 285 #   do_others <objdir>/<target>
 286 # The field "<objdir>/" is typically empy, "spl/", "tpl/" for Normal, SPL, TPL,
 287 # respectively.
 288 # The field "<target>" is a configuration target such as "config",
 289 # "menuconfig", etc.
 290 do_others () {
 291         target=${1##*/}
 292
 293         if [ "$target" = "$1" ]; then
 294                 objdir=
 295         else
 296                 objdir=${1%/*}
 297                 check_enabled_subimage $1 $objdir
 298         fi
 299
 300         run_make_config $target $objdir
 301 }
 302
 303 progname=$(basename $0)
 304 target=$1
 305
 306 case $target in
 307 *_defconfig)
 308         do_board_defconfig $target;;
 309 *_config)
 310         # backward compatibility
 311         do_board_defconfig ${target%_config}_defconfig;;
 312 silentoldconfig)
 313         do_silentoldconfig;;
 314 defconfig)
 315         do_defconfig;;
 316 savedefconfig)
 317         do_savedefconfig;;
 318 *)
 319         do_others $target;;
 320 esac