package/base/linux/linux-conf.in

   1 # --- T2-COPYRIGHT-NOTE-BEGIN ---
   2 # This copyright note is auto-generated by scripts/Create-CopyPatch.
   3 #
   4 # T2 SDE: package/*/linux/linux-conf.in
   5 # Copyright (C) 2004 - 2021 The T2 SDE Project
   6 # Copyright (C) 1998 - 2003 ROCK Linux Project
   7 #
   8 # More information can be found in the files COPYING and README.
   9 #
  10 # This program is free software; you can redistribute it and/or modify
  11 # it under the terms of the GNU General Public License as published by
  12 # the Free Software Foundation; version 2 of the License. A copy of the
  13 # GNU General Public License can be found in the file COPYING.
  14 # --- T2-COPYRIGHT-NOTE-END ---
  15
  16 if [ ! "$lx_cpu" ]; then
  17         lx_cpu=`echo $arch | arch2uname |
  18         sed 's/mips64/mips/;s/bfin/blackfin/;s/aarch64/arm64/;s/hppa.*/parisc/;s/riscv64/riscv/;s/s390x/s390/'`
  19         # unifications since ~2.6
  20         lx_cpu=`echo $lx_cpu | sed 's/i386/x86/;s/x86_64/x86/;s/ppc.*/powerpc/'`
  21 fi
  22 lx_extraversion=""
  23 lx_kernelrelease=""
  24 lx_customconf="\$base/config/$config/linux.cfg"
  25
  26 # cleanups in this fat directory are a bit expensive
  27 nocvsinsrcdir=0
  28 chownsrcdir=0
  29
  30 # inject a possible pre-/ post-release patch
  31 # we filter out .tar`s to avoid trouble with the linuxsh kernel drop-in trees
  32 var_insert patchfiles " " "`match_source_file patch-.* | grep -v '\.tar\.'`"
  33
  34 makeopt=`echo $makeopt | sed -n 's/.*\(-j[^ ]*\).*/\1/p'`
  35 var_append makeopt ' ' "ARCH=$lx_cpu CROSS_COMPILE=$archprefix HOSTCC=cc KCC=$KCC"
  36 makeinstopt="$makeopt"
  37
  38 auto_config () {
  39         if [ -f $base/architecture/$arch/linux.conf ]; then
  40                 echo "  using: architecture/$arch/linux.conf"
  41                 cp $base/architecture/$arch/linux.conf .config
  42         elif [ -f $base/architecture/$arch/linux.conf.sh ]; then
  43                 echo "  using: architecture/$arch/linux.conf.sh"
  44                 . $base/architecture/$arch/linux.conf.sh > .config
  45         elif [ -f $base/architecture/$arch/linux.conf.m4 ]; then
  46                 echo "  using: architecture/$arch/linux.conf.m4"
  47                 m4 -I $base/architecture/$arch -I $base/architecture/share \
  48                    $base/architecture/$arch/linux.conf.m4 > .config
  49         else
  50                 echo "  using: no SDE linux kernel config found"
  51                 cp arch/$lx_cpu/defconfig .config
  52         fi
  53         case "$SDECFG_OPT" in
  54           size*|smart) echo "CONFIG_CC_OPTIMIZE_FOR_SIZE=y" >> .config ;;
  55           *) echo "# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set" >> .config ;;
  56         esac
  57         cp .config{,.1}
  58
  59         # all modules needs to be first so modules can be disabled by i.e.
  60         # the targets later
  61         echo "Enabling all modules ..."
  62         yes '' | eval $MAKE $makeopt no2modconfig > /dev/null; cp .config{,.2}
  63
  64         if [ -f $base/target/$target/linux.conf.sh ]; then
  65                 confscripts="$base/target/$target/linux.conf.sh $confscripts"
  66         fi
  67
  68         for x in $confscripts; do
  69                 echo "  running: $x"
  70                 sh $x .config
  71         done
  72         cp .config{,.3}
  73
  74         # merge various text/plain config files
  75         for x in $base/config/$config/linux.cfg \
  76                  $base/target/$target/linux.conf; do
  77            if [ -f $x ]; then
  78                 echo "  merging: '$x'"
  79                 tag="$(sed '/CONFIG_/ ! d; s,.*CONFIG_\([^ =]*\).*,\1,' \
  80                         $x | tr '\n' '|')"
  81                 egrep -v "\bCONFIG_($tag)\b" < .config > .config.4
  82                 sed 's,\(CONFIG_.*\)=n,# \1 is not set,' \
  83                         $x >> .config.4
  84                 cp .config{.4,}
  85            fi
  86         done
  87
  88         # create a valid .config
  89         yes '' | eval $MAKE $makeopt oldconfig > /dev/null; cp .config{,.5}
  90
  91         # last disable broken stuff
  92         rm -f /tmp/$$.sed
  93         list="CONFIG_THIS_DOES_NOT_EXIST"
  94         for x in $pkg_linux_brokenfiles; do
  95             if [ -f "$x" ]; then
  96                 echo "Disable broken file: $x"
  97                 list="$list `tr ' ' '\t' < $x | cut -f1 | grep '^CONFIG_'`"
  98             fi
  99         done
 100         for x in $list; do
 101                 echo "s,^$x=.\$,# $x is not set,;" >> /tmp/$$.sed
 102         done
 103
 104         sed -f /tmp/$$.sed < .config > .config.6
 105         cp .config{.6,}; rm -f /tmp/$$.sed
 106
 107         # create a valid .config (dependencies might need to be disabled)
 108         yes '' | eval $MAKE $makeopt oldconfig > /dev/null
 109
 110         # save final config
 111         cp .config{,_modules}
 112
 113         echo "Creating config without modules ...."
 114         sed "s,\(CONFIG_.*\)=m,# \1 is not set," .config > .config_new
 115         mv .config_new .config
 116         # create a valid .config (dependencies might need to be disabled)
 117         yes '' | eval $MAKE $makeopt oldconfig > /dev/null
 118         mv .config .config_nomods
 119
 120         # which .config to use?
 121         if [ "$SDECFG_PKG_LINUX_CONFIG_STYLE" = "modules" ]; then
 122                 cp .config{_modules,}
 123         else
 124                 cp .config{_nomods,}
 125         fi
 126 }
 127
 128 lx_grabextraversion () {
 129         local ev
 130         ev=$( sed -n -e 's,^[ \t]*EXTRAVERSION[ \t]*=[ \t]*\([^ \t]*\),\1,p' Makefile | tail -n 1 )
 131         if [ "$ev" ]; then
 132                 lx_extraversion="${lx_extraversion}${ev}"
 133                 # keep intact but commented since the second EXTRAVERSION
 134                 # definition, and clean the first.
 135                 sed -i -e 's,^\([ \t]*EXTRAVERSION[ \t]*=.*\),#\1,g' \
 136                        -e 's,^#\(EXTRAVERSION =\).*,\1,' Makefile
 137         fi
 138 }
 139 lx_injectextraversion () {
 140         # inject final EXTRAVERSION into Makefile
 141         sed -i -e "s,^\([ \t]*EXTRAVERSION[ \t]*\)=.*,\1= ${lx_extraversion},g" Makefile
 142
 143         # update version.h - we only do this, because some other freaky
 144         # projects like rsbac change EXTRAVERSION in other Makefiles ...
 145         local rerun=""
 146         ( eval $MAKE $makeopt include/generated/utsrelease.h ||
 147           eval $MAKE $makeopt include/linux/utsrelease.h ||
 148           eval $MAKE $makeopt include/linux/version.h ) |
 149                 grep -q "is up to date" && rerun=1
 150         if [ "$rerun" ]; then
 151                 echo "WARNING: Your system's timer resolution is too low ..."
 152                 sleep 1; touch Makefile
 153                 eval $MAKE $makeopt include/generated/utsrelease.h ||
 154                 eval $MAKE $makeopt include/linux/utsrelease.h ||
 155                 eval $MAKE $makeopt include/linux/version.h
 156         fi
 157
 158         # get kernel_release
 159         rerun=1
 160         while true; do
 161                 for fn in include/generated/utsrelease.h \
 162                           include/linux/utsrelease.h \
 163                           include/linux/version.h; do
 164                         [ -f $fn ] && versionh=$fn && break
 165                 done
 166
 167                 lx_kernelrelease="$( echo -e "#include \"$versionh\"\nUTS_RELEASE" |
 168                                      $KCC -E - | tail -n 1 | cut -d '"' -f 2 )"
 169                 if [ -z "$lx_kernelrelease" -a "$rerun" ]; then
 170                         $MAKE $makeopt .kernelrelease include/linux/version.h
 171                         $MAKE $makeopt include/generated/utsrelease.h ||
 172                         $MAKE $makeopt include/linux/utsrelease.h
 173                         rerun=; continue
 174                 fi
 175                 break
 176         done
 177
 178         if [ ! "$lx_kernelrelease" -o "$lx_kernelrelease" = "UTS_RELEASE" ]; then
 179                 abort "Could not grab final kernel version!"
 180         fi
 181 }
 182
 183 lx_filter_patch () {
 184         local prefix="`sed -n '/^-EXTRAVERSION =/ {
 185                                s/^-EXTRAVERSION =//p
 186                                q }' $1`"
 187         # whitespace after EXTRAVERSION must be preserve to apply
 188         expr=
 189         # only tweak EXTRAVERSION if no space content
 190         [ "${prefix%% }" != ""  ] &&
 191                 var_append expr ';'  "s/^-EXTRAVERSION =.*/-EXTRAVERSION =/"
 192         var_append expr ';' "s/^+EXTRAVERSION = *$prefix/+EXTRAVERSION =/"
 193
 194         sed -e "$expr" $1
 195 }
 196
 197 lx_patch () {
 198         echo "Generic linux patching ..."
 199
 200         # grab extraversion from vanilla
 201         lx_grabextraversion
 202
 203         apply_patchfiles lx_grabextraversion lx_filter_patch
 204
 205         # some arches (avr32, sh64 at the time of writing) have a "defect" Makefile
 206         # and do not work without a .config ...
 207         yes '' | eval $MAKE $makeopt oldconfig > /dev/null
 208
 209         echo "Redefining VERSION  ..."
 210         lx_extraversion="${lx_extraversion}-t2"
 211         lx_injectextraversion
 212         echo "... linux source patching for ${lx_extraversion} finished."
 213
 214         echo "Clean up the *.orig and *~ files ... "
 215         rm -f .config.old .config
 216 }
 217
 218 lx_config() {
 219         echo "Generic linux configuration ..."
 220         if [ "$SDECFG_PKG_LINUX_CONFIG_STYLE" = none ]; then
 221                 echo "Using $lx_customconf."
 222                 echo "Since automatic generation is disabled ..."
 223                 eval cp -v $lx_customconf .config || true
 224         else
 225                 echo "Automatically creating default configuration ...."
 226                 auto_config
 227         fi
 228
 229         # regrab for stuff like rsbac ... :-(
 230         lx_injectextraversion
 231
 232         echo "... configuration of $lx_kernelrelease finished!"
 233 }
 234
 235 pkg_linux_brokenfiles="$base/architecture/$arch/linux-disable.lst \
 236         $base/package/*/linux/disable-broken.lst \
 237         $pkg_linux_brokenfiles"