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1 | 1 | # |
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2 | 2 | # Build and Setup RPi2/3 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 [ "$BUILD_KERNEL" = true ] ; then |
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10 | 10 | # Setup source directory |
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11 | mkdir -p "${R}/usr/src" | |
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11 | mkdir -p "${R}/usr/src/linux" | |
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12 | 12 | |
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13 | 13 | # Copy existing kernel sources into chroot directory |
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14 | 14 | if [ -n "$KERNELSRC_DIR" ] && [ -d "$KERNELSRC_DIR" ] ; then |
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15 | 15 | # Copy kernel sources |
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16 | cp -r "${KERNELSRC_DIR}" "${R}/usr/src" | |
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16 | cp -r "${KERNELSRC_DIR}/*" "${R}/usr/src/linux" | |
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17 | 17 | |
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18 | 18 | # Clean the kernel sources |
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19 | 19 | if [ "$KERNELSRC_CLEAN" = true ] && [ "$KERNELSRC_PREBUILT" = false ] ; then |
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20 | 20 | make -C "${KERNEL_DIR}" 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 | # Create temporary directory for kernel sources |
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24 | 24 | temp_dir=$(as_nobody mktemp -d) |
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25 | 25 | |
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26 | 26 | # Fetch current RPi2/3 kernel sources |
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27 | 27 | if [ -z "${KERNEL_BRANCH}" ] ; then |
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28 | as_nobody -u nobody git -C "${temp_dir}" clone --depth=1 "${KERNEL_URL}" | |
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28 | as_nobody -u nobody git -C "${temp_dir}" clone --depth=1 "${KERNEL_URL}" linux | |
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29 | 29 | else |
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30 | as_nobody -u nobody git -C "${temp_dir}" clone --depth=1 --branch "${KERNEL_BRANCH}" "${KERNEL_URL}" | |
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30 | as_nobody -u nobody git -C "${temp_dir}" clone --depth=1 --branch "${KERNEL_BRANCH}" "${KERNEL_URL}" linux | |
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31 | 31 | fi |
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32 | 32 | |
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33 | 33 | # Copy downloaded kernel sources |
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34 | mv "${temp_dir}/linux" "${R}/usr/src/" | |
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34 | mv "${temp_dir}/linux/*" "${R}/usr/src/linux/" | |
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35 | 35 | |
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36 | 36 | # Remove temporary directory for kernel sources |
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37 | 37 | rm -fr "${temp_dir}" |
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38 | 38 | |
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39 | 39 | # Set permissions of the kernel sources |
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40 | 40 | chown -R root:root "${R}/usr/src" |
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41 | 41 | fi |
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42 | 42 | |
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43 | 43 | # Calculate optimal number of kernel building threads |
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44 | 44 | if [ "$KERNEL_THREADS" = "1" ] && [ -r /proc/cpuinfo ] ; then |
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45 | 45 | KERNEL_THREADS=$(grep -c processor /proc/cpuinfo) |
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46 | 46 | fi |
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47 | 47 | |
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48 | 48 | # Configure and build kernel |
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49 | 49 | if [ "$KERNELSRC_PREBUILT" = false ] ; then |
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50 | 50 | # Remove device, network and filesystem drivers from kernel configuration |
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51 | 51 | if [ "$KERNEL_REDUCE" = true ] ; then |
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52 | 52 | make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}" |
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53 | 53 | sed -i\ |
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54 | 54 | -e "s/\(^CONFIG_SND.*\=\).*/\1n/"\ |
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55 | 55 | -e "s/\(^CONFIG_SOUND.*\=\).*/\1n/"\ |
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56 | 56 | -e "s/\(^CONFIG_AC97.*\=\).*/\1n/"\ |
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57 | 57 | -e "s/\(^CONFIG_VIDEO_.*\=\).*/\1n/"\ |
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58 | 58 | -e "s/\(^CONFIG_MEDIA_TUNER.*\=\).*/\1n/"\ |
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59 | 59 | -e "s/\(^CONFIG_DVB.*\=\)[ym]/\1n/"\ |
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60 | 60 | -e "s/\(^CONFIG_REISERFS.*\=\).*/\1n/"\ |
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61 | 61 | -e "s/\(^CONFIG_JFS.*\=\).*/\1n/"\ |
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62 | 62 | -e "s/\(^CONFIG_XFS.*\=\).*/\1n/"\ |
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63 | 63 | -e "s/\(^CONFIG_GFS2.*\=\).*/\1n/"\ |
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64 | 64 | -e "s/\(^CONFIG_OCFS2.*\=\).*/\1n/"\ |
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65 | 65 | -e "s/\(^CONFIG_BTRFS.*\=\).*/\1n/"\ |
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66 | 66 | -e "s/\(^CONFIG_HFS.*\=\).*/\1n/"\ |
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67 | 67 | -e "s/\(^CONFIG_JFFS2.*\=\)[ym]/\1n/"\ |
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68 | 68 | -e "s/\(^CONFIG_UBIFS.*\=\).*/\1n/"\ |
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69 | 69 | -e "s/\(^CONFIG_SQUASHFS.*\=\)[ym]/\1n/"\ |
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70 | 70 | -e "s/\(^CONFIG_W1.*\=\)[ym]/\1n/"\ |
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71 | 71 | -e "s/\(^CONFIG_HAMRADIO.*\=\).*/\1n/"\ |
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72 | 72 | -e "s/\(^CONFIG_CAN.*\=\).*/\1n/"\ |
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73 | 73 | -e "s/\(^CONFIG_IRDA.*\=\).*/\1n/"\ |
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74 | 74 | -e "s/\(^CONFIG_BT_.*\=\).*/\1n/"\ |
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75 | 75 | -e "s/\(^CONFIG_WIMAX.*\=\)[ym]/\1n/"\ |
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76 | 76 | -e "s/\(^CONFIG_6LOWPAN.*\=\).*/\1n/"\ |
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77 | 77 | -e "s/\(^CONFIG_IEEE802154.*\=\).*/\1n/"\ |
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78 | 78 | -e "s/\(^CONFIG_NFC.*\=\).*/\1n/"\ |
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79 | 79 | -e "s/\(^CONFIG_FB_TFT=.*\=\).*/\1n/"\ |
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80 | 80 | -e "s/\(^CONFIG_TOUCHSCREEN.*\=\).*/\1n/"\ |
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81 | 81 | -e "s/\(^CONFIG_USB_GSPCA_.*\=\).*/\1n/"\ |
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82 | 82 | -e "s/\(^CONFIG_DRM.*\=\).*/\1n/"\ |
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83 | 83 | "${KERNEL_DIR}/.config" |
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84 | 84 | fi |
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85 | 85 | |
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86 | 86 | if [ "$KERNELSRC_CONFIG" = true ] ; then |
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87 | 87 | # Load default raspberry kernel configuration |
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88 | 88 | make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}" |
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89 | 89 | |
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90 | 90 | if [ ! -z "$KERNELSRC_USRCONFIG" ] ; then |
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91 | 91 | cp $KERNELSRC_USRCONFIG ${KERNEL_DIR}/.config |
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92 | 92 | fi |
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93 | 93 | |
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94 | 94 | # Start menu-driven kernel configuration (interactive) |
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95 | 95 | if [ "$KERNEL_MENUCONFIG" = true ] ; then |
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96 | 96 | make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" menuconfig |
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97 | 97 | fi |
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98 | 98 | fi |
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99 | 99 | |
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100 | 100 | # Cross compile kernel and modules |
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101 | 101 | make -C "${KERNEL_DIR}" -j${KERNEL_THREADS} ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_BIN_IMAGE}" modules dtbs |
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102 | 102 | fi |
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103 | 103 | |
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104 | 104 | # Check if kernel compilation was successful |
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105 | 105 | if [ ! -r "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" ] ; then |
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106 | 106 | echo "error: kernel compilation failed! (kernel image not found)" |
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107 | 107 | cleanup |
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108 | 108 | exit 1 |
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109 | 109 | fi |
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110 | 110 | |
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111 | 111 | # Install kernel modules |
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112 | 112 | if [ "$ENABLE_REDUCE" = true ] ; then |
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113 | 113 | make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=../../.. modules_install |
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114 | 114 | else |
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115 | 115 | make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_PATH=../../.. modules_install |
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116 | 116 | |
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117 | 117 | # Install kernel firmware |
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118 | 118 | make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_FW_PATH=../../../lib firmware_install |
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119 | 119 | fi |
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120 | 120 | |
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121 | 121 | # Install kernel headers |
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122 | 122 | if [ "$KERNEL_HEADERS" = true ] && [ "$KERNEL_REDUCE" = false ] ; then |
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123 | 123 | make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_HDR_PATH=../.. headers_install |
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124 | 124 | fi |
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125 | 125 | |
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126 | 126 | # Prepare boot (firmware) directory |
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127 | 127 | mkdir "${BOOT_DIR}" |
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128 | 128 | |
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129 | 129 | # Get kernel release version |
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130 | 130 | KERNEL_VERSION=`cat "${KERNEL_DIR}/include/config/kernel.release"` |
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131 | 131 | |
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132 | 132 | # Copy kernel configuration file to the boot directory |
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133 | 133 | install_readonly "${KERNEL_DIR}/.config" "${R}/boot/config-${KERNEL_VERSION}" |
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134 | 134 | |
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135 | 135 | # Copy dts and dtb device tree sources and binaries |
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136 | 136 | mkdir "${BOOT_DIR}/overlays" |
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137 | 137 | |
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138 | 138 | # Ensure the proper .dtb is located |
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139 | 139 | if [ "$KERNEL_ARCH" = "arm" ] ; then |
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140 | 140 | install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/"*.dtb "${BOOT_DIR}/" |
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141 | 141 | else |
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142 | 142 | install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/broadcom/"*.dtb "${BOOT_DIR}/" |
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143 | 143 | fi |
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144 | 144 | |
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145 | 145 | install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/"*.dtb* "${BOOT_DIR}/overlays/" |
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146 | 146 | install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/README" "${BOOT_DIR}/overlays/README" |
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147 | 147 | |
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148 | 148 | if [ "$ENABLE_UBOOT" = false ] ; then |
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149 | 149 | # Convert and copy kernel image to the boot directory |
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150 | 150 | "${KERNEL_DIR}/scripts/mkknlimg" "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" "${BOOT_DIR}/${KERNEL_IMAGE}" |
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151 | 151 | else |
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152 | 152 | # Copy kernel image to the boot directory |
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153 | 153 | install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" "${BOOT_DIR}/${KERNEL_IMAGE}" |
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154 | 154 | fi |
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155 | 155 | |
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156 | 156 | # Remove kernel sources |
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157 | 157 | if [ "$KERNEL_REMOVESRC" = true ] ; then |
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158 | 158 | rm -fr "${KERNEL_DIR}" |
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159 | 159 | else |
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160 | 160 | make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" modules_prepare |
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161 | 161 | |
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162 | 162 | # Create symlinks for kernel modules |
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163 | 163 | chroot_exec ln -sf /usr/src/linux "/lib/modules/${KERNEL_VERSION}/build" |
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164 | 164 | chroot_exec ln -sf /usr/src/linux "/lib/modules/${KERNEL_VERSION}/source" |
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165 | 165 | fi |
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166 | 166 | |
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167 | 167 | else # BUILD_KERNEL=false |
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168 | 168 | # Kernel installation |
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169 | 169 | chroot_exec apt-get -qq -y --no-install-recommends install linux-image-"${COLLABORA_KERNEL}" raspberrypi-bootloader-nokernel |
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170 | 170 | |
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171 | 171 | # Install flash-kernel last so it doesn't try (and fail) to detect the platform in the chroot |
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172 | 172 | chroot_exec apt-get -qq -y install flash-kernel |
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173 | 173 | |
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174 | 174 | # Check if kernel installation was successful |
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175 | 175 | VMLINUZ="$(ls -1 ${R}/boot/vmlinuz-* | sort | tail -n 1)" |
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176 | 176 | if [ -z "$VMLINUZ" ] ; then |
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177 | 177 | echo "error: kernel installation failed! (/boot/vmlinuz-* not found)" |
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178 | 178 | cleanup |
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179 | 179 | exit 1 |
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180 | 180 | fi |
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181 | 181 | # Copy vmlinuz kernel to the boot directory |
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182 | 182 | install_readonly "${VMLINUZ}" "${BOOT_DIR}/${KERNEL_IMAGE}" |
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183 | 183 | fi |
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