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1 | 1 | # |
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2 | 2 | # Build and Setup RPi2 Kernel |
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3 | 3 | # |
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4 | 4 | |
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5 | 5 | # Load utility functions |
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6 | 6 | . ./functions.sh |
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7 | 7 | |
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8 | 8 | # Fetch and build latest raspberry kernel |
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9 | 9 | if [ "$BUILD_KERNEL" = true ] ; then |
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10 | 10 | # Setup source directory |
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11 | 11 | mkdir -p "$R/usr/src" |
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12 | 12 | |
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13 | 13 | # Copy existing kernel sources into chroot directory |
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14 | 14 | if [ -n "$KERNELSRC_DIR" ] && [ -d "$KERNELSRC_DIR" ] ; then |
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15 | 15 | # Copy kernel sources |
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16 | 16 | cp -r "${KERNELSRC_DIR}" "${R}/usr/src" |
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17 | 17 | |
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18 | 18 | # Clean the kernel sources |
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19 | 19 | if [ "$KERNELSRC_CLEAN" = true ] && [ "$KERNELSRC_PREBUILT" = false ] ; then |
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20 | 20 | make -C "$R/usr/src/linux" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" mrproper |
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21 | 21 | fi |
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22 | 22 | else # KERNELSRC_DIR="" |
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23 | 23 | # Fetch current raspberrypi kernel sources |
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24 | 24 | git -C "$R/usr/src" clone --depth=1 https://github.com/raspberrypi/linux |
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25 | 25 | fi |
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26 | 26 | |
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27 | 27 | # Calculate optimal number of kernel building threads |
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28 | 28 | if [ "$KERNEL_THREADS" = "1" ] && [ -r /proc/cpuinfo ] ; then |
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29 | 29 | KERNEL_THREADS=$(grep -c processor /proc/cpuinfo) |
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30 | 30 | fi |
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31 | 31 | |
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32 | 32 | # Configure and build kernel |
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33 | 33 | if [ "$KERNELSRC_PREBUILT" = false ] ; then |
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34 | 34 | # Remove device, network and filesystem drivers from kernel configuration |
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35 | 35 | if [ "$KERNEL_REDUCE" = true ] ; then |
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36 | 36 | make -C "$R/usr/src/linux" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}" |
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37 | 37 | sed -i\ |
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38 | 38 | -e "s/\(^CONFIG_SND.*\=\).*/\1n/"\ |
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39 | 39 | -e "s/\(^CONFIG_SOUND.*\=\).*/\1n/"\ |
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40 | 40 | -e "s/\(^CONFIG_AC97.*\=\).*/\1n/"\ |
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41 | 41 | -e "s/\(^CONFIG_VIDEO_.*\=\).*/\1n/"\ |
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42 | 42 | -e "s/\(^CONFIG_MEDIA_TUNER.*\=\).*/\1n/"\ |
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43 | 43 | -e "s/\(^CONFIG_DVB.*\=\)[ym]/\1n/"\ |
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44 | 44 | -e "s/\(^CONFIG_REISERFS.*\=\).*/\1n/"\ |
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45 | 45 | -e "s/\(^CONFIG_JFS.*\=\).*/\1n/"\ |
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46 | 46 | -e "s/\(^CONFIG_XFS.*\=\).*/\1n/"\ |
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47 | 47 | -e "s/\(^CONFIG_GFS2.*\=\).*/\1n/"\ |
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48 | 48 | -e "s/\(^CONFIG_OCFS2.*\=\).*/\1n/"\ |
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49 | 49 | -e "s/\(^CONFIG_BTRFS.*\=\).*/\1n/"\ |
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50 | 50 | -e "s/\(^CONFIG_HFS.*\=\).*/\1n/"\ |
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51 | 51 | -e "s/\(^CONFIG_JFFS2.*\=\)[ym]/\1n/"\ |
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52 | 52 | -e "s/\(^CONFIG_UBIFS.*\=\).*/\1n/"\ |
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53 | 53 | -e "s/\(^CONFIG_SQUASHFS.*\=\)[ym]/\1n/"\ |
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54 | 54 | -e "s/\(^CONFIG_W1.*\=\)[ym]/\1n/"\ |
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55 | 55 | -e "s/\(^CONFIG_HAMRADIO.*\=\).*/\1n/"\ |
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56 | 56 | -e "s/\(^CONFIG_CAN.*\=\).*/\1n/"\ |
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57 | 57 | -e "s/\(^CONFIG_IRDA.*\=\).*/\1n/"\ |
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58 | 58 | -e "s/\(^CONFIG_BT_.*\=\).*/\1n/"\ |
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59 | 59 | -e "s/\(^CONFIG_WIMAX.*\=\)[ym]/\1n/"\ |
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60 | 60 | -e "s/\(^CONFIG_6LOWPAN.*\=\).*/\1n/"\ |
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61 | 61 | -e "s/\(^CONFIG_IEEE802154.*\=\).*/\1n/"\ |
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62 | 62 | -e "s/\(^CONFIG_NFC.*\=\).*/\1n/"\ |
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63 | 63 | -e "s/\(^CONFIG_FB_TFT=.*\=\).*/\1n/"\ |
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64 | 64 | -e "s/\(^CONFIG_TOUCHSCREEN.*\=\).*/\1n/"\ |
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65 | 65 | -e "s/\(^CONFIG_USB_GSPCA_.*\=\).*/\1n/"\ |
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66 | 66 | -e "s/\(^CONFIG_DRM.*\=\).*/\1n/"\ |
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67 | 67 | "$R/usr/src/linux/.config" |
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68 | 68 | fi |
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69 | 69 | |
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70 | 70 | if [ "$KERNELSRC_CONFIG" = true ] ; then |
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71 | 71 | # Load default raspberry kernel configuration |
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72 | 72 | make -C "$R/usr/src/linux" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}" |
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73 | 73 | |
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74 | 74 | # Start menu-driven kernel configuration (interactive) |
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75 | 75 | if [ "$KERNEL_MENUCONFIG" = true ] ; then |
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76 | 76 | make -C "$R/usr/src/linux" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" menuconfig |
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77 | 77 | fi |
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78 | 78 | fi |
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79 | 79 | |
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80 | 80 | # Cross compile kernel and modules |
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81 | 81 | make -C "$R/usr/src/linux" -j${KERNEL_THREADS} ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" zImage modules dtbs |
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82 | 82 | fi |
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83 | 83 | |
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84 | 84 | # Check if kernel compilation was successful |
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85 | 85 | if [ ! -r "$R/usr/src/linux/arch/${KERNEL_ARCH}/boot/zImage" ] ; then |
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86 | 86 | echo "error: kernel compilation failed! (zImage not found)" |
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87 | 87 | cleanup |
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88 | 88 | exit 1 |
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89 | 89 | fi |
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90 | 90 | |
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91 | 91 | # Install kernel modules |
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92 | 92 | if [ "$ENABLE_REDUCE" = true ] ; then |
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93 | 93 | make -C "$R/usr/src/linux" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=../../.. modules_install |
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94 | 94 | else |
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95 | 95 | make -C "$R/usr/src/linux" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_PATH=../../.. modules_install |
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96 | 96 | |
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97 | 97 | # Install kernel firmware |
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98 | 98 | make -C "$R/usr/src/linux" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_FW_PATH=../../../lib firmware_install |
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99 | 99 | fi |
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100 | 100 | |
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101 | 101 | # Install kernel headers |
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102 | 102 | if [ "$KERNEL_HEADERS" = true ] && [ "$KERNEL_REDUCE" = false ] ; then |
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103 | 103 | make -C "$R/usr/src/linux" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_HDR_PATH=../.. headers_install |
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104 | 104 | fi |
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105 | 105 | |
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106 | 106 | # Prepare boot (firmware) directory |
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107 | 107 | mkdir "$R/boot/firmware/" |
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108 | 108 | |
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109 | 109 | # Get kernel release version |
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110 | 110 | KERNEL_VERSION=`cat "$R/usr/src/linux/include/config/kernel.release"` |
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111 | 111 | |
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112 | 112 | # Copy kernel configuration file to the boot directory |
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113 | 113 | install_readonly "$R/usr/src/linux/.config" "$R/boot/config-${KERNEL_VERSION}" |
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114 | 114 | |
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115 | 115 | # Copy dts and dtb device tree sources and binaries |
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116 | 116 | mkdir "$R/boot/firmware/overlays/" |
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117 | 117 | install_readonly "$R/usr/src/linux/arch/${KERNEL_ARCH}/boot/dts/"*.dtb "$R/boot/firmware/" |
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118 | 118 | install_readonly "$R/usr/src/linux/arch/${KERNEL_ARCH}/boot/dts/overlays/"*.dtb* "$R/boot/firmware/overlays/" |
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119 | 119 | install_readonly "$R/usr/src/linux/arch/${KERNEL_ARCH}/boot/dts/overlays/README" "$R/boot/firmware/overlays/README" |
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120 | 120 | |
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121 | # Copy zImage kernel to the boot directory | |
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122 |
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121 | # Convert and copy zImage kernel to the boot directory | |
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122 | "$R/usr/src/linux/scripts/mkknlimg" "$R/usr/src/linux/arch/arm/boot/zImage" "$R/boot/firmware/kernel7.img" | |
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123 | 123 | |
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124 | 124 | # Remove kernel sources |
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125 | 125 | if [ "$KERNEL_REMOVESRC" = true ] ; then |
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126 | 126 | rm -fr "$R/usr/src/linux" |
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127 | 127 | fi |
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128 | 128 | |
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129 | 129 | # Install latest boot binaries from raspberry/firmware github |
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130 | 130 | wget -q -O "$R/boot/firmware/bootcode.bin" https://github.com/raspberrypi/firmware/raw/master/boot/bootcode.bin |
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131 | wget -q -O "$R/boot/firmware/fixup_cd.dat" https://github.com/raspberrypi/firmware/raw/master/boot/fixup_cd.dat | |
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132 | 131 | wget -q -O "$R/boot/firmware/fixup.dat" https://github.com/raspberrypi/firmware/raw/master/boot/fixup.dat |
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132 | wget -q -O "$R/boot/firmware/fixup_cd.dat" https://github.com/raspberrypi/firmware/raw/master/boot/fixup_cd.dat | |
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133 | 133 | wget -q -O "$R/boot/firmware/fixup_x.dat" https://github.com/raspberrypi/firmware/raw/master/boot/fixup_x.dat |
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134 | wget -q -O "$R/boot/firmware/start_cd.elf" https://github.com/raspberrypi/firmware/raw/master/boot/start_cd.elf | |
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135 | 134 | wget -q -O "$R/boot/firmware/start.elf" https://github.com/raspberrypi/firmware/raw/master/boot/start.elf |
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135 | wget -q -O "$R/boot/firmware/start_cd.elf" https://github.com/raspberrypi/firmware/raw/master/boot/start_cd.elf | |
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136 | 136 | wget -q -O "$R/boot/firmware/start_x.elf" https://github.com/raspberrypi/firmware/raw/master/boot/start_x.elf |
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137 | 137 | |
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138 | 138 | else # BUILD_KERNEL=false |
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139 | 139 | # Kernel installation |
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140 | 140 | chroot_exec apt-get -qq -y --no-install-recommends install linux-image-"${COLLABORA_KERNEL}" raspberrypi-bootloader-nokernel |
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141 | 141 | |
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142 | 142 | # Install flash-kernel last so it doesn't try (and fail) to detect the platform in the chroot |
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143 | 143 | chroot_exec apt-get -qq -y install flash-kernel |
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144 | 144 | |
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145 | 145 | # Check if kernel installation was successful |
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146 | 146 | VMLINUZ="$(ls -1 $R/boot/vmlinuz-* | sort | tail -n 1)" |
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147 | 147 | if [ -z "$VMLINUZ" ] ; then |
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148 | 148 | echo "error: kernel installation failed! (/boot/vmlinuz-* not found)" |
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149 | 149 | cleanup |
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150 | 150 | exit 1 |
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151 | 151 | fi |
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152 | 152 | # Copy vmlinuz kernel to the boot directory |
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153 | 153 | install_readonly "$VMLINUZ" "$R/boot/firmware/kernel7.img" |
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154 | 154 | fi |
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155 | 155 | |
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156 | 156 | # Setup firmware boot cmdline |
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157 | 157 | if [ "$ENABLE_SPLITFS" = true ] ; then |
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158 | 158 | CMDLINE="dwc_otg.lpm_enable=0 root=/dev/sda1 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait net.ifnames=1 console=tty1 ${CMDLINE}" |
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159 | 159 | else |
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160 | 160 | CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait net.ifnames=1 console=tty1 ${CMDLINE}" |
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161 | 161 | fi |
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162 | 162 | |
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163 | 163 | # Add serial console support |
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164 | 164 | if [ "$ENABLE_CONSOLE" = true ] ; then |
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165 | 165 | CMDLINE="${CMDLINE} console=ttyAMA0,115200 kgdboc=ttyAMA0,115200" |
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166 | 166 | fi |
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167 | 167 | |
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168 | 168 | # Remove IPv6 networking support |
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169 | 169 | if [ "$ENABLE_IPV6" = false ] ; then |
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170 | 170 | CMDLINE="${CMDLINE} ipv6.disable=1" |
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171 | 171 | fi |
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172 | 172 | |
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173 | 173 | # Install firmware boot cmdline |
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174 | 174 | echo "${CMDLINE}" > "$R/boot/firmware/cmdline.txt" |
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175 | 175 | |
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176 | 176 | # Add encrypted root partition to cmdline.txt |
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177 | 177 | if [ "$ENABLE_CRYPTFS" = true ] ; then |
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178 | 178 | sed -i "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/mmcblk0p2:${CRYPTFS_MAPPING}/" "$R/boot/firmware/cmdline.txt" |
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179 | 179 | fi |
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180 | 180 | |
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181 | 181 | # Install firmware config |
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182 | 182 | install_readonly files/boot/config.txt "$R/boot/firmware/config.txt" |
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183 | 183 | |
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184 | 184 | # Setup minimal GPU memory allocation size: 16MB (no X) |
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185 | 185 | if [ "$ENABLE_MINGPU" = true ] ; then |
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186 | 186 | echo "gpu_mem=16" >> "$R/boot/firmware/config.txt" |
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187 | 187 | fi |
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188 | 188 | |
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189 | 189 | # Setup boot with initramfs |
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190 | 190 | if [ "$ENABLE_INITRAMFS" = true ] ; then |
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191 | 191 | echo "initramfs initramfs-${KERNEL_VERSION} followkernel" >> "$R/boot/firmware/config.txt" |
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192 | 192 | fi |
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193 | 193 | |
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194 | 194 | # Create firmware configuration and cmdline symlinks |
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195 | 195 | ln -sf firmware/config.txt "$R/boot/config.txt" |
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196 | 196 | ln -sf firmware/cmdline.txt "$R/boot/cmdline.txt" |
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197 | 197 | |
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198 | 198 | # Install and setup kernel modules to load at boot |
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199 | 199 | mkdir -p "$R/lib/modules-load.d/" |
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200 | 200 | install_readonly files/modules/rpi2.conf "$R/lib/modules-load.d/rpi2.conf" |
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201 | 201 | |
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202 | 202 | # Load hardware random module at boot |
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203 | 203 | if [ "$ENABLE_HWRANDOM" = true ] ; then |
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204 | 204 | sed -i "s/^# bcm2708_rng/bcm2708_rng/" "$R/lib/modules-load.d/rpi2.conf" |
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205 | 205 | fi |
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206 | 206 | |
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207 | 207 | # Load sound module at boot |
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208 | 208 | if [ "$ENABLE_SOUND" = true ] ; then |
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209 | 209 | sed -i "s/^# snd_bcm2835/snd_bcm2835/" "$R/lib/modules-load.d/rpi2.conf" |
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210 | 210 | fi |
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211 | 211 | |
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212 | 212 | # Install kernel modules blacklist |
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213 | 213 | mkdir -p "$R/etc/modprobe.d/" |
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214 | 214 | install_readonly files/modules/raspi-blacklist.conf "$R/etc/modprobe.d/raspi-blacklist.conf" |
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215 | 215 | |
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216 | 216 | # Install and setup fstab |
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217 | 217 | install_readonly files/mount/fstab "$R/etc/fstab" |
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218 | 218 | |
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219 | 219 | # Add usb/sda disk root partition to fstab |
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220 | 220 | if [ "$ENABLE_SPLITFS" = true ] ; then |
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221 | 221 | sed -i "s/mmcblk0p2/sda1/" "$R/etc/fstab" |
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222 | 222 | fi |
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223 | 223 | |
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224 | 224 | # Add encrypted root partition to fstab and crypttab |
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225 | 225 | if [ "$ENABLE_CRYPTFS" = true ] ; then |
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226 | 226 | # Replace fstab root partition with encrypted partition mapping |
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227 | 227 | sed -i "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING}/" "$R/etc/fstab" |
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228 | 228 | |
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229 | 229 | # Add encrypted partition to crypttab and fstab |
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230 | 230 | install_readonly files/mount/crypttab "$R/etc/crypttab" |
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231 | 231 | echo "${CRYPTFS_MAPPING} /dev/mmcblk0p2 none luks" >> "$R/etc/crypttab" |
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232 | 232 | fi |
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233 | 233 | |
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234 | 234 | # Generate initramfs file |
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235 | 235 | if [ "$ENABLE_INITRAMFS" = true ] ; then |
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236 | 236 | if [ "$ENABLE_CRYPTFS" = true ] ; then |
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237 | 237 | # Dummy mapping required by mkinitramfs |
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238 | 238 | echo "0 1 crypt $(echo ${CRYPTFS_CIPHER} | cut -d ':' -f 1) ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 0 7:0 4096" | chroot_exec dmsetup create "${CRYPTFS_MAPPING}" |
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239 | 239 | |
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240 | 240 | # Generate initramfs with encrypted root partition support |
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241 | 241 | chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}" |
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242 | 242 | |
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243 | 243 | # Remove dummy mapping |
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244 | 244 | chroot_exec cryptsetup close "${CRYPTFS_MAPPING}" |
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245 | 245 | else |
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246 | 246 | # Generate initramfs without encrypted root partition support |
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247 | 247 | chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}" |
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248 | 248 | fi |
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249 | 249 | fi |
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250 | 250 | |
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251 | 251 | # Install sysctl.d configuration files |
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252 | 252 | install_readonly files/sysctl.d/81-rpi-vm.conf "$R/etc/sysctl.d/81-rpi-vm.conf" |
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