Mercurial > hg > aboriginal
annotate system-image.sh @ 593:67bc5a49cf1d
Mark Miller pointed out that $LINUX_FLAGS is needed for the initramfs build.
author | Rob Landley <rob@landley.net> |
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date | Sat, 17 Jan 2009 19:48:23 -0600 |
parents | 4750bed36a72 |
children | 3d67228ceb1e |
rev | line source |
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177 | 1 #!/bin/bash |
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Package ext2 filesystem image using UML.
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2 |
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3 # Create a bootable system image from mini-native |
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4 |
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5 NO_BASE_ARCH=1 |
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6 source sources/include.sh |
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7 |
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8 echo -e "$PACKAGE_COLOR" |
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9 echo "=== Packaging system image from mini-native" |
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10 |
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11 [ -z "$SYSIMAGE_TYPE" ] && SYSIMAGE_TYPE=ext2 |
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12 |
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13 SYSIMAGE="${BUILD}/system-image-${ARCH_NAME}" |
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14 |
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15 TOOLSDIR=tools |
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16 [ -z "$NATIVE_TOOLSDIR" ] && TOOLSDIR=usr |
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17 |
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18 # Flush old system-image directory |
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19 |
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20 rm -rf "${SYSIMAGE}" |
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21 mkdir -p "${SYSIMAGE}" || dienow |
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22 |
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23 # This next bit is a little complicated; we generate the root filesystem image |
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24 # in the middle of building a kernel. This is necessary to embed an |
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25 # initramfs in the kernel, and allows us to parallelize the kernel build with |
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26 # the image generation. Having the other image types in the same if/else |
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27 # staircase with initramfs lets us detect unknown image types (probably typos) |
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28 # without repeating any. |
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29 |
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30 # Build a linux kernel for the target |
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31 |
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32 setupfor linux |
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33 [ -z "$BOOT_KARCH" ] && BOOT_KARCH="$KARCH" |
591
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34 cp "$(getconfig linux)" mini.conf || dienow |
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35 [ "$SYSIMAGE_TYPE" == "initramfs" ] && |
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36 (echo "CONFIG_BLK_DEV_INITRD=y" >> mini.conf || dienow) |
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37 make ARCH="${BOOT_KARCH}" KCONFIG_ALLCONFIG=mini.conf \ |
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38 allnoconfig >/dev/null || dienow |
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39 |
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40 # Build kernel in parallel with initramfs |
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41 |
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42 ( make -j $CPUS ARCH="${BOOT_KARCH}" CROSS_COMPILE="${ARCH}-" $LINUX_FLAGS || |
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43 dienow ) & |
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44 |
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45 # If we exit before removing this handler, kill everything in the current |
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46 # process group, which should take out backgrounded kernel make. |
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47 trap "kill 0" EXIT |
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48 |
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49 # Embed an initramfs image in the kernel? |
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50 |
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51 if [ "$SYSIMAGE_TYPE" == "initramfs" ] |
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52 then |
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53 echo "Generating initramfs (in background)" |
588
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54 $CC usr/gen_init_cpio.c -o my_gen_init_cpio || dienow |
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55 (./my_gen_init_cpio <( |
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56 "$SOURCES"/toys/gen_initramfs_list.sh "$NATIVE" |
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57 [ ! -e "$NATIVE"/init ] && |
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58 echo "slink /init /$TOOLSDIR/sbin/init.sh 755 0 0" |
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59 [ ! -d "$NATIVE"/dev ] && echo "dir /dev 755 0 0" |
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60 echo "nod /dev/console 660 0 0 c 5 1" |
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61 ) || dienow |
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62 ) | gzip -9 > initramfs_data.cpio.gz || dienow |
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63 echo Initramfs generated. |
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64 |
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65 # Wait for initial kernel build to finish. |
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66 |
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67 wait4background 0 |
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68 |
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69 # This is a repeat of an earlier make invocation, but if we try to |
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70 # consolidate them the dependencies build unnecessary prereqisites |
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71 # and then decide that they're newer than the cpio.gz we supplied, |
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72 # and thus overwrite it with a default (emptyish) one. |
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73 |
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74 echo "Building kernel with initramfs." |
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75 [ -f initramfs_data.cpio.gz ] && |
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76 touch initramfs_data.cpio.gz && |
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77 mv initramfs_data.cpio.gz usr && |
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78 make -j $CPUS ARCH="${BOOT_KARCH}" CROSS_COMPILE="${ARCH}-" $LINUX_FLAGS \ |
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79 || dienow |
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80 |
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81 # No need to supply an hda image to emulator. |
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82 |
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83 IMAGE= |
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84 elif [ "$SYSIMAGE_TYPE" == "ext2" ] |
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85 then |
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86 # Generate a 64 megabyte ext2 filesystem image from the $NATIVE directory, |
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87 # with a temporary file defining the /dev nodes for the new filesystem. |
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88 |
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89 echo "Generating ext2 image (in background)" |
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90 |
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91 IMAGE="image-${ARCH}.ext2" |
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92 DEVLIST="$WORK"/devlist |
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93 |
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94 echo "/dev d 755 0 0 - - - - -" > "$DEVLIST" && |
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95 echo "/dev/console c 640 0 0 5 1 0 0 -" >> "$DEVLIST" && |
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96 |
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97 genext2fs -z -D "$DEVLIST" -d "${NATIVE}" -i 1024 -b $[64*1024] \ |
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98 "${SYSIMAGE}/${IMAGE}" && |
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99 rm "$DEVLIST" || dienow |
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100 |
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101 #elif [ "$SYSIMAGE_TYPE" == "squashfs" ] |
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102 #then |
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103 # We used to do this, but updating the squashfs patch for each new kernel |
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104 # was just too much work. If it gets merged someday, we may care again... |
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105 |
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106 # IMAGE="image-${ARCH}.sqf" |
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107 # echo -n "Creating squashfs image (in background)" |
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108 # "${WORK}/mksquashfs" "${NATIVE}" "${SYSIMAGE}/$IMAGE" \ |
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109 # -noappend -all-root -info || dienow |
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110 else |
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111 echo "Unknown image type." >&2 |
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112 dienow |
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113 fi |
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114 |
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115 # Wait for kernel build to finish (may be a NOP) |
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116 |
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117 echo Image generation complete. |
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118 wait4background 0 |
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119 trap "" EXIT |
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120 |
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121 # Install kernel |
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122 |
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123 [ -d "${TOOLS}/src" ] && cp .config "${TOOLS}"/src/config-linux |
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124 cp "${KERNEL_PATH}" "${SYSIMAGE}/zImage-${ARCH}" && |
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125 cd .. |
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126 |
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127 cleanup linux |
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128 |
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129 # Provide qemu's common command line options between architectures. The lack |
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130 # of ending quotes on -append is intentional, callers append more kernel |
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131 # command line arguments and provide their own ending quote. |
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132 function qemu_defaults() |
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133 { |
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134 if [ "$SYSIMAGE_TYPE" != "initramfs" ] |
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135 then |
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136 HDA="-hda \"$1\" " |
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137 APPEND="root=/dev/$ROOT rw init=/$TOOLSDIR/sbin/init.sh " |
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138 fi |
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139 |
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140 echo "-nographic -no-reboot -kernel \"$2\" \$WITH_HDB \$MEMORY ${HDA}" \ |
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141 "-append \"${APPEND}panic=1 PATH=\$DISTCC_PATH_PREFIX/${TOOLSDIR}/bin" \ |
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142 "console=$CONSOLE \$KERNEL_EXTRA\"" |
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143 } |
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144 |
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145 # Write out a script to call the appropriate emulator. We split out the |
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146 # filesystem, kernel, and base kernel command line arguments in case you want |
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147 # to use an emulator other than qemu, but put the default case in qemu_defaults |
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148 |
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149 cp "$SOURCES/toys/run-emulator.sh" "$SYSIMAGE/run-emulator.sh" && |
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150 emulator_command image-$ARCH.ext2 zImage-$ARCH >> "$SYSIMAGE/run-emulator.sh" |
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151 |
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152 [ $? -ne 0 ] && dienow |
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153 |
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154 if [ "$ARCH" == powerpc ] |
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155 then |
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156 cp "$SOURCES"/toys/ppc_rom.bin "$SYSIMAGE" || dienow |
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157 fi |
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158 |
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159 # Tar it up. |
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160 |
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161 tar -cvj -f "$BUILD"/system-image-$ARCH_NAME.tar.bz2 \ |
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162 -C "$BUILD" system-image-$ARCH_NAME || dienow |
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163 |
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164 echo -e "=== Packaging complete\e[0m" |