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Prepare kernel for module compilation (ex. dkms)
Michal Svamberg -
r104:42829802e846
parent child
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@@ -1,310 +1,314
1 1 #
2 2 # Build and Setup RPi2/3 Kernel
3 3 #
4 4
5 5 # Load utility functions
6 6 . ./functions.sh
7 7
8 8 # Fetch and build latest raspberry kernel
9 9 if [ "$BUILD_KERNEL" = true ] ; then
10 10 # Setup source directory
11 11 mkdir -p "${R}/usr/src"
12 12
13 13 # Copy existing kernel sources into chroot directory
14 14 if [ -n "$KERNELSRC_DIR" ] && [ -d "$KERNELSRC_DIR" ] ; then
15 15 # Copy kernel sources
16 16 cp -r "${KERNELSRC_DIR}" "${R}/usr/src"
17 17
18 18 # Clean the kernel sources
19 19 if [ "$KERNELSRC_CLEAN" = true ] && [ "$KERNELSRC_PREBUILT" = false ] ; then
20 20 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" mrproper
21 21 fi
22 22 else # KERNELSRC_DIR=""
23 23 # Fetch current raspberrypi kernel sources
24 24 git -C "${R}/usr/src" clone --depth=1 "${KERNEL_URL}"
25 25 fi
26 26
27 27 # Calculate optimal number of kernel building threads
28 28 if [ "$KERNEL_THREADS" = "1" ] && [ -r /proc/cpuinfo ] ; then
29 29 KERNEL_THREADS=$(grep -c processor /proc/cpuinfo)
30 30 fi
31 31
32 32 # Configure and build kernel
33 33 if [ "$KERNELSRC_PREBUILT" = false ] ; then
34 34 # Remove device, network and filesystem drivers from kernel configuration
35 35 if [ "$KERNEL_REDUCE" = true ] ; then
36 36 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}"
37 37 sed -i\
38 38 -e "s/\(^CONFIG_SND.*\=\).*/\1n/"\
39 39 -e "s/\(^CONFIG_SOUND.*\=\).*/\1n/"\
40 40 -e "s/\(^CONFIG_AC97.*\=\).*/\1n/"\
41 41 -e "s/\(^CONFIG_VIDEO_.*\=\).*/\1n/"\
42 42 -e "s/\(^CONFIG_MEDIA_TUNER.*\=\).*/\1n/"\
43 43 -e "s/\(^CONFIG_DVB.*\=\)[ym]/\1n/"\
44 44 -e "s/\(^CONFIG_REISERFS.*\=\).*/\1n/"\
45 45 -e "s/\(^CONFIG_JFS.*\=\).*/\1n/"\
46 46 -e "s/\(^CONFIG_XFS.*\=\).*/\1n/"\
47 47 -e "s/\(^CONFIG_GFS2.*\=\).*/\1n/"\
48 48 -e "s/\(^CONFIG_OCFS2.*\=\).*/\1n/"\
49 49 -e "s/\(^CONFIG_BTRFS.*\=\).*/\1n/"\
50 50 -e "s/\(^CONFIG_HFS.*\=\).*/\1n/"\
51 51 -e "s/\(^CONFIG_JFFS2.*\=\)[ym]/\1n/"\
52 52 -e "s/\(^CONFIG_UBIFS.*\=\).*/\1n/"\
53 53 -e "s/\(^CONFIG_SQUASHFS.*\=\)[ym]/\1n/"\
54 54 -e "s/\(^CONFIG_W1.*\=\)[ym]/\1n/"\
55 55 -e "s/\(^CONFIG_HAMRADIO.*\=\).*/\1n/"\
56 56 -e "s/\(^CONFIG_CAN.*\=\).*/\1n/"\
57 57 -e "s/\(^CONFIG_IRDA.*\=\).*/\1n/"\
58 58 -e "s/\(^CONFIG_BT_.*\=\).*/\1n/"\
59 59 -e "s/\(^CONFIG_WIMAX.*\=\)[ym]/\1n/"\
60 60 -e "s/\(^CONFIG_6LOWPAN.*\=\).*/\1n/"\
61 61 -e "s/\(^CONFIG_IEEE802154.*\=\).*/\1n/"\
62 62 -e "s/\(^CONFIG_NFC.*\=\).*/\1n/"\
63 63 -e "s/\(^CONFIG_FB_TFT=.*\=\).*/\1n/"\
64 64 -e "s/\(^CONFIG_TOUCHSCREEN.*\=\).*/\1n/"\
65 65 -e "s/\(^CONFIG_USB_GSPCA_.*\=\).*/\1n/"\
66 66 -e "s/\(^CONFIG_DRM.*\=\).*/\1n/"\
67 67 "${KERNEL_DIR}/.config"
68 68 fi
69 69
70 70 if [ "$KERNELSRC_CONFIG" = true ] ; then
71 71 # Load default raspberry kernel configuration
72 72 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}"
73 73
74 74 if [ ! -z "$KERNELSRC_USRCONFIG" ] ; then
75 75 cp $KERNELSRC_USRCONFIG ${KERNEL_DIR}/.config
76 76 fi
77 77
78 78 # Start menu-driven kernel configuration (interactive)
79 79 if [ "$KERNEL_MENUCONFIG" = true ] ; then
80 80 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" menuconfig
81 81 fi
82 82 fi
83 83
84 84 # Cross compile kernel and modules
85 85 make -C "${KERNEL_DIR}" -j${KERNEL_THREADS} ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" zImage modules dtbs
86 86 fi
87 87
88 88 # Check if kernel compilation was successful
89 89 if [ ! -r "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/zImage" ] ; then
90 90 echo "error: kernel compilation failed! (zImage not found)"
91 91 cleanup
92 92 exit 1
93 93 fi
94 94
95 95 # Install kernel modules
96 96 if [ "$ENABLE_REDUCE" = true ] ; then
97 97 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=../../.. modules_install
98 98 else
99 99 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_PATH=../../.. modules_install
100 100
101 101 # Install kernel firmware
102 102 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_FW_PATH=../../../lib firmware_install
103 103 fi
104 104
105 105 # Install kernel headers
106 106 if [ "$KERNEL_HEADERS" = true ] && [ "$KERNEL_REDUCE" = false ] ; then
107 107 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_HDR_PATH=../.. headers_install
108 108 fi
109 109
110 110 # Prepare boot (firmware) directory
111 111 mkdir "${BOOT_DIR}"
112 112
113 113 # Get kernel release version
114 114 KERNEL_VERSION=`cat "${KERNEL_DIR}/include/config/kernel.release"`
115 115
116 116 # Copy kernel configuration file to the boot directory
117 117 install_readonly "${KERNEL_DIR}/.config" "${R}/boot/config-${KERNEL_VERSION}"
118 118
119 119 # Copy dts and dtb device tree sources and binaries
120 120 mkdir "${BOOT_DIR}/overlays"
121 121 install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/"*.dtb "${BOOT_DIR}/"
122 122 install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/"*.dtb* "${BOOT_DIR}/overlays/"
123 123 install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/README" "${BOOT_DIR}/overlays/README"
124 124
125 125 if [ "$ENABLE_UBOOT" = false ] ; then
126 126 # Convert and copy zImage kernel to the boot directory
127 127 "${KERNEL_DIR}/scripts/mkknlimg" "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/zImage" "${BOOT_DIR}/${KERNEL_IMAGE}"
128 128 else
129 129 # Copy zImage kernel to the boot directory
130 130 install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/zImage" "${BOOT_DIR}/${KERNEL_IMAGE}"
131 131 fi
132 132
133 133 # Remove kernel sources
134 134 if [ "$KERNEL_REMOVESRC" = true ] ; then
135 135 rm -fr "${KERNEL_DIR}"
136 else
137 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" mrproper
138 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" oldconfig
139 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" modules_prepare
136 140 fi
137 141
138 142 if [ -n "$RPI_FIRMWARE_DIR" ] && [ -d "$RPI_FIRMWARE_DIR" ] ; then
139 143 # Install boot binaries from local directory
140 144 cp ${RPI_FIRMWARE_DIR}/boot/bootcode.bin ${BOOT_DIR}/bootcode.bin
141 145 cp ${RPI_FIRMWARE_DIR}/boot/fixup.dat ${BOOT_DIR}/fixup.dat
142 146 cp ${RPI_FIRMWARE_DIR}/boot/fixup_cd.dat ${BOOT_DIR}/fixup_cd.dat
143 147 cp ${RPI_FIRMWARE_DIR}/boot/fixup_x.dat ${BOOT_DIR}/fixup_x.dat
144 148 cp ${RPI_FIRMWARE_DIR}/boot/start.elf ${BOOT_DIR}/start.elf
145 149 cp ${RPI_FIRMWARE_DIR}/boot/start_cd.elf ${BOOT_DIR}/start_cd.elf
146 150 cp ${RPI_FIRMWARE_DIR}/boot/start_x.elf ${BOOT_DIR}/start_x.elf
147 151 else
148 152 # Install latest boot binaries from raspberry/firmware github
149 153 wget -q -O "${BOOT_DIR}/bootcode.bin" "${FIRMWARE_URL}/bootcode.bin"
150 154 wget -q -O "${BOOT_DIR}/fixup.dat" "${FIRMWARE_URL}/fixup.dat"
151 155 wget -q -O "${BOOT_DIR}/fixup_cd.dat" "${FIRMWARE_URL}/fixup_cd.dat"
152 156 wget -q -O "${BOOT_DIR}/fixup_x.dat" "${FIRMWARE_URL}/fixup_x.dat"
153 157 wget -q -O "${BOOT_DIR}/start.elf" "${FIRMWARE_URL}/start.elf"
154 158 wget -q -O "${BOOT_DIR}/start_cd.elf" "${FIRMWARE_URL}/start_cd.elf"
155 159 wget -q -O "${BOOT_DIR}/start_x.elf" "${FIRMWARE_URL}/start_x.elf"
156 160 fi
157 161
158 162 else # BUILD_KERNEL=false
159 163 # Kernel installation
160 164 chroot_exec apt-get -qq -y --no-install-recommends install linux-image-"${COLLABORA_KERNEL}" raspberrypi-bootloader-nokernel
161 165
162 166 # Install flash-kernel last so it doesn't try (and fail) to detect the platform in the chroot
163 167 chroot_exec apt-get -qq -y install flash-kernel
164 168
165 169 # Check if kernel installation was successful
166 170 VMLINUZ="$(ls -1 ${R}/boot/vmlinuz-* | sort | tail -n 1)"
167 171 if [ -z "$VMLINUZ" ] ; then
168 172 echo "error: kernel installation failed! (/boot/vmlinuz-* not found)"
169 173 cleanup
170 174 exit 1
171 175 fi
172 176 # Copy vmlinuz kernel to the boot directory
173 177 install_readonly "${VMLINUZ}" "${BOOT_DIR}/${KERNEL_IMAGE}"
174 178 fi
175 179
176 180 # Setup firmware boot cmdline
177 181 if [ "$ENABLE_SPLITFS" = true ] ; then
178 182 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/sda1 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait console=tty1"
179 183 else
180 184 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait console=tty1"
181 185 fi
182 186
183 187 # Add encrypted root partition to cmdline.txt
184 188 if [ "$ENABLE_CRYPTFS" = true ] ; then
185 189 if [ "$ENABLE_SPLITFS" = true ] ; then
186 190 CMDLINE=$(echo ${CMDLINE} | sed "s/sda1/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/sda1:${CRYPTFS_MAPPING}/")
187 191 else
188 192 CMDLINE=$(echo ${CMDLINE} | sed "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/mmcblk0p2:${CRYPTFS_MAPPING}/")
189 193 fi
190 194 fi
191 195
192 196 # Add serial console support
193 197 if [ "$ENABLE_CONSOLE" = true ] ; then
194 198 CMDLINE="${CMDLINE} console=ttyAMA0,115200 kgdboc=ttyAMA0,115200"
195 199 fi
196 200
197 201 # Remove IPv6 networking support
198 202 if [ "$ENABLE_IPV6" = false ] ; then
199 203 CMDLINE="${CMDLINE} ipv6.disable=1"
200 204 fi
201 205
202 206 # Automatically assign predictable network interface names
203 207 if [ "$ENABLE_IFNAMES" = false ] ; then
204 208 CMDLINE="${CMDLINE} net.ifnames=0"
205 209 else
206 210 CMDLINE="${CMDLINE} net.ifnames=1"
207 211 fi
208 212
209 213 # Set init to systemd if required by Debian release
210 214 if [ "$RELEASE" = "stretch" ] ; then
211 215 CMDLINE="${CMDLINE} init=/bin/systemd"
212 216 fi
213 217
214 218 # Install firmware boot cmdline
215 219 echo "${CMDLINE}" > "${BOOT_DIR}/cmdline.txt"
216 220
217 221 # Install firmware config
218 222 install_readonly files/boot/config.txt "${BOOT_DIR}/config.txt"
219 223
220 224 # Setup minimal GPU memory allocation size: 16MB (no X)
221 225 if [ "$ENABLE_MINGPU" = true ] ; then
222 226 echo "gpu_mem=16" >> "${BOOT_DIR}/config.txt"
223 227 fi
224 228
225 229 # Setup boot with initramfs
226 230 if [ "$ENABLE_INITRAMFS" = true ] ; then
227 231 echo "initramfs initramfs-${KERNEL_VERSION} followkernel" >> "${BOOT_DIR}/config.txt"
228 232 fi
229 233
230 234 # Disable RPi3 Bluetooth and restore ttyAMA0 serial device
231 235 if [ "$RPI_MODEL" = 3 ] ; then
232 236 if [ "$ENABLE_CONSOLE" = true ] ; then
233 237 echo "dtoverlay=pi3-miniuart-bt" >> "${BOOT_DIR}/config.txt"
234 238 fi
235 239 fi
236 240
237 241 # Create firmware configuration and cmdline symlinks
238 242 ln -sf firmware/config.txt "${R}/boot/config.txt"
239 243 ln -sf firmware/cmdline.txt "${R}/boot/cmdline.txt"
240 244
241 245 # Install and setup kernel modules to load at boot
242 246 mkdir -p "${R}/lib/modules-load.d/"
243 247 install_readonly files/modules/rpi2.conf "${R}/lib/modules-load.d/rpi2.conf"
244 248
245 249 # Load hardware random module at boot
246 250 if [ "$ENABLE_HWRANDOM" = true ] && [ "$BUILD_KERNEL" = false ] ; then
247 251 sed -i "s/^# bcm2708_rng/bcm2708_rng/" "${R}/lib/modules-load.d/rpi2.conf"
248 252 fi
249 253
250 254 # Load sound module at boot
251 255 if [ "$ENABLE_SOUND" = true ] ; then
252 256 sed -i "s/^# snd_bcm2835/snd_bcm2835/" "${R}/lib/modules-load.d/rpi2.conf"
253 257 fi
254 258
255 259 # Install kernel modules blacklist
256 260 mkdir -p "${ETC_DIR}/modprobe.d/"
257 261 install_readonly files/modules/raspi-blacklist.conf "${ETC_DIR}/modprobe.d/raspi-blacklist.conf"
258 262
259 263 # Install and setup fstab
260 264 install_readonly files/mount/fstab "${ETC_DIR}/fstab"
261 265
262 266 # Add usb/sda disk root partition to fstab
263 267 if [ "$ENABLE_SPLITFS" = true ] && [ "$ENABLE_CRYPTFS" = false ] ; then
264 268 sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/fstab"
265 269 fi
266 270
267 271 # Add encrypted root partition to fstab and crypttab
268 272 if [ "$ENABLE_CRYPTFS" = true ] ; then
269 273 # Replace fstab root partition with encrypted partition mapping
270 274 sed -i "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING}/" "${ETC_DIR}/fstab"
271 275
272 276 # Add encrypted partition to crypttab and fstab
273 277 install_readonly files/mount/crypttab "${ETC_DIR}/crypttab"
274 278 echo "${CRYPTFS_MAPPING} /dev/mmcblk0p2 none luks" >> "${ETC_DIR}/crypttab"
275 279
276 280 if [ "$ENABLE_SPLITFS" = true ] ; then
277 281 # Add usb/sda disk to crypttab
278 282 sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/crypttab"
279 283 fi
280 284 fi
281 285
282 286 # Generate initramfs file
283 287 if [ "$ENABLE_INITRAMFS" = true ] ; then
284 288 if [ "$ENABLE_CRYPTFS" = true ] ; then
285 289 # Include initramfs scripts to auto expand encrypted root partition
286 290 if [ "$EXPANDROOT" = true ] ; then
287 291 install_exec files/initramfs/expand_encrypted_rootfs "${ETC_DIR}/initramfs-tools/scripts/init-premount/expand_encrypted_rootfs"
288 292 install_exec files/initramfs/expand-premount "${ETC_DIR}/initramfs-tools/scripts/local-premount/expand-premount"
289 293 install_exec files/initramfs/expand-tools "${ETC_DIR}/initramfs-tools/hooks/expand-tools"
290 294 fi
291 295
292 296 # Disable SSHD inside initramfs
293 297 printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=n\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf"
294 298
295 299 # Dummy mapping required by mkinitramfs
296 300 echo "0 1 crypt $(echo ${CRYPTFS_CIPHER} | cut -d ':' -f 1) ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 0 7:0 4096" | chroot_exec dmsetup create "${CRYPTFS_MAPPING}"
297 301
298 302 # Generate initramfs with encrypted root partition support
299 303 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
300 304
301 305 # Remove dummy mapping
302 306 chroot_exec cryptsetup close "${CRYPTFS_MAPPING}"
303 307 else
304 308 # Generate initramfs without encrypted root partition support
305 309 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
306 310 fi
307 311 fi
308 312
309 313 # Install sysctl.d configuration files
310 314 install_readonly files/sysctl.d/81-rpi-vm.conf "${ETC_DIR}/sysctl.d/81-rpi-vm.conf"
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