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Raspi2-3_GenImage
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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 [ "$BUILD_KERNEL" = true ] ; then
10 10 # Setup source directory
11 11 mkdir -p "${KERNEL_DIR}"
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 and include hidden files
16 16 cp -r "${KERNELSRC_DIR}/". "${KERNEL_DIR}"
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="${CROSS_COMPILE}" mrproper
21 21 fi
22 22 else # KERNELSRC_DIR=""
23 23 # Create temporary directory for kernel sources
24 24 temp_dir=$(as_nobody mktemp -d)
25 25
26 26 # Fetch current RPi2/3 kernel sources
27 27 if [ -z "${KERNEL_BRANCH}" ] ; then
28 28 as_nobody -H git -C "${temp_dir}" clone --depth=1 "${KERNEL_URL}" linux
29 29 else
30 30 as_nobody -H git -C "${temp_dir}" clone --depth=1 --branch "${KERNEL_BRANCH}" "${KERNEL_URL}" linux
31 31 fi
32 32
33 33 # Copy downloaded kernel sources
34 34 cp -r "${temp_dir}/linux/"* "${KERNEL_DIR}"
35 35
36 36 # Remove temporary directory for kernel sources
37 37 rm -fr "${temp_dir}"
38 38
39 39 # Set permissions of the kernel sources
40 40 chown -R root:root "${R}/usr/src"
41 41 fi
42 42
43 43 # Calculate optimal number of kernel building threads
44 44 if [ "$KERNEL_THREADS" = "1" ] && [ -r /proc/cpuinfo ] ; then
45 45 KERNEL_THREADS=$(grep -c processor /proc/cpuinfo)
46 46 fi
47 47
48 48 # Configure and build kernel
49 49 if [ "$KERNELSRC_PREBUILT" = false ] ; then
50 50 # Remove device, network and filesystem drivers from kernel configuration
51 51 if [ "$KERNEL_REDUCE" = true ] ; then
52 52 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}"
53 53 sed -i\
54 54 -e "s/\(^CONFIG_SND.*\=\).*/\1n/"\
55 55 -e "s/\(^CONFIG_SOUND.*\=\).*/\1n/"\
56 56 -e "s/\(^CONFIG_AC97.*\=\).*/\1n/"\
57 57 -e "s/\(^CONFIG_VIDEO_.*\=\).*/\1n/"\
58 58 -e "s/\(^CONFIG_MEDIA_TUNER.*\=\).*/\1n/"\
59 59 -e "s/\(^CONFIG_DVB.*\=\)[ym]/\1n/"\
60 60 -e "s/\(^CONFIG_REISERFS.*\=\).*/\1n/"\
61 61 -e "s/\(^CONFIG_JFS.*\=\).*/\1n/"\
62 62 -e "s/\(^CONFIG_XFS.*\=\).*/\1n/"\
63 63 -e "s/\(^CONFIG_GFS2.*\=\).*/\1n/"\
64 64 -e "s/\(^CONFIG_OCFS2.*\=\).*/\1n/"\
65 65 -e "s/\(^CONFIG_BTRFS.*\=\).*/\1n/"\
66 66 -e "s/\(^CONFIG_HFS.*\=\).*/\1n/"\
67 67 -e "s/\(^CONFIG_JFFS2.*\=\)[ym]/\1n/"\
68 68 -e "s/\(^CONFIG_UBIFS.*\=\).*/\1n/"\
69 69 -e "s/\(^CONFIG_SQUASHFS.*\=\)[ym]/\1n/"\
70 70 -e "s/\(^CONFIG_W1.*\=\)[ym]/\1n/"\
71 71 -e "s/\(^CONFIG_HAMRADIO.*\=\).*/\1n/"\
72 72 -e "s/\(^CONFIG_CAN.*\=\).*/\1n/"\
73 73 -e "s/\(^CONFIG_IRDA.*\=\).*/\1n/"\
74 74 -e "s/\(^CONFIG_BT_.*\=\).*/\1n/"\
75 75 -e "s/\(^CONFIG_WIMAX.*\=\)[ym]/\1n/"\
76 76 -e "s/\(^CONFIG_6LOWPAN.*\=\).*/\1n/"\
77 77 -e "s/\(^CONFIG_IEEE802154.*\=\).*/\1n/"\
78 78 -e "s/\(^CONFIG_NFC.*\=\).*/\1n/"\
79 79 -e "s/\(^CONFIG_FB_TFT=.*\=\).*/\1n/"\
80 80 -e "s/\(^CONFIG_TOUCHSCREEN.*\=\).*/\1n/"\
81 81 -e "s/\(^CONFIG_USB_GSPCA_.*\=\).*/\1n/"\
82 82 -e "s/\(^CONFIG_DRM.*\=\).*/\1n/"\
83 "${KERNEL_DIR}/.config"
83 "${KERNEL_DIR}"/.config
84 84 fi
85 85
86 86 if [ "$KERNELSRC_CONFIG" = true ] ; then
87 87 # Load default raspberry kernel configuration
88 88 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}"
89 89 #Switch to KERNELSRC_DIR
90 90 cd "${KERNEL_DIR}"
91 91
92 92 # GPL v2.0
93 93 #https://github.com/sakaki-/bcmrpi3-kernel-bis/blob/master/conform_config.sh
94 94 if [ "$KERNEL_ZSWAP" = true ] && { [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; } ; then
95 95 # enable ZSWAP support for better performance during large builds etc.
96 96 # requires activation via kernel parameter or sysfs
97 97 # see e.g. https://askubuntu.com/a/472227 for a summary of ZSWAP (vs ZRAM etc.)
98 98 # and e.g. https://wiki.archlinux.org/index.php/zswap for parameters etc.
99 99 set_kernel_config ZPOOL y
100 100 set_kernel_config ZSWAP y
101 101 set_kernel_config ZBUD y
102 102 set_kernel_config Z3FOLD y
103 103 set_kernel_config ZSMALLOC y
104 104 set_kernel_config PGTABLE_MAPPING y
105 105 fi
106 106
107 107 if [ "$KERNEL_VIRT" = true ] && { [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; } ; then
108 108 # enable basic KVM support; see e.g.
109 109 # https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=210546&start=25#p1300453
110 110 set_kernel_config VIRTUALIZATION y
111 111 set_kernel_config KVM y
112 112 set_kernel_config VHOST_NET m
113 113 set_kernel_config VHOST_CROSS_ENDIAN_LEGACY y
114 114 fi
115 115 #See https://github.com/raspberrypi/linux/issues/2177#issuecomment-354647406
116 116 # Netfilter kernel support
117 117 if [ "$KERNEL_NF" = true ] && { [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; } ; then
118 118 set_kernel_config CONFIG_NETFILTER_XTABLES m
119 119 set_kernel_config CONFIG_NF_DUP_NETDEV m
120 120 set_kernel_config CONFIG_NF_NAT_SIP m
121 121 set_kernel_config CONFIG_NF_TABLES_ARP m
122 122 set_kernel_config CONFIG_NF_TABLES_BRIDGE m
123 123 set_kernel_config NF_TABLES m
124 124 set_kernel_config CONFIG_BRIDGE_EBT_BROUTE m
125 125 set_kernel_config CONFIG_BRIDGE_EBT_T_FILTER m
126 126 set_kernel_config CONFIG_BRIDGE_NF_EBTABLES m
127 127 set_kernel_config CONFIG_IP6_NF_IPTABLES m
128 128 set_kernel_config CONFIG_IP6_NF_MATCH_AH m
129 129 set_kernel_config CONFIG_IP6_NF_MATCH_EUI64 m
130 130 set_kernel_config CONFIG_IP6_NF_NAT m
131 131 set_kernel_config CONFIG_IP6_NF_TARGET_MASQUERADE m
132 132 set_kernel_config CONFIG_IP6_NF_TARGET_NPT m
133 133 set_kernel_config CONFIG_IP_SET_BITMAP_IPMAC m
134 134 set_kernel_config CONFIG_IP_SET_BITMAP_PORT m
135 135 set_kernel_config CONFIG_IP_SET_HASH_IP m
136 136 set_kernel_config CONFIG_IP_SET_HASH_IPMARK m
137 137 set_kernel_config CONFIG_IP_SET_HASH_IPPORT m
138 138 set_kernel_config CONFIG_IP_SET_HASH_IPPORTIP m
139 139 set_kernel_config CONFIG_IP_SET_HASH_IPPORTNET m
140 140 set_kernel_config CONFIG_IP_SET_HASH_MAC m
141 141 set_kernel_config CONFIG_IP_SET_HASH_NET m
142 142 set_kernel_config CONFIG_IP_SET_HASH_NETIFACE m
143 143 set_kernel_config CONFIG_IP_SET_HASH_NETNET m
144 144 set_kernel_config CONFIG_IP_SET_HASH_NETPORT m
145 145 set_kernel_config CONFIG_IP_SET_HASH_NETPORTNET m
146 146 set_kernel_config CONFIG_IP_SET_LIST_SET m
147 147 set_kernel_config CONFIG_NFT_BRIDGE_META m
148 148 set_kernel_config CONFIG_NFT_BRIDGE_REJECT m
149 149 set_kernel_config CONFIG_NFT_CHAIN_NAT_IPV4 m
150 150 set_kernel_config CONFIG_NFT_CHAIN_NAT_IPV6 m
151 151 set_kernel_config CONFIG_NFT_CHAIN_ROUTE_IPV4 m
152 152 set_kernel_config CONFIG_NFT_CHAIN_ROUTE_IPV6 m
153 153 set_kernel_config CONFIG_NFT_COMPAT m
154 154 set_kernel_config CONFIG_NFT_COUNTER m
155 155 set_kernel_config CONFIG_NFT_CT m
156 156 set_kernel_config CONFIG_NFT_DUP_IPV4 m
157 157 set_kernel_config CONFIG_NFT_DUP_IPV6 m
158 158 set_kernel_config CONFIG_NFT_DUP_NETDEV m
159 159 set_kernel_config CONFIG_NFT_EXTHDR m
160 160 set_kernel_config CONFIG_NFT_FWD_NETDEV m
161 161 set_kernel_config CONFIG_NFT_HASH m
162 162 set_kernel_config CONFIG_NFT_LIMIT m
163 163 set_kernel_config CONFIG_NFT_LOG m
164 164 set_kernel_config CONFIG_NFT_MASQ m
165 165 set_kernel_config CONFIG_NFT_MASQ_IPV4 m
166 166 set_kernel_config CONFIG_NFT_MASQ_IPV6 m
167 167 set_kernel_config CONFIG_NFT_META m
168 168 set_kernel_config CONFIG_NFT_NAT m
169 169 set_kernel_config CONFIG_NFT_NUMGEN m
170 170 set_kernel_config CONFIG_NFT_QUEUE m
171 171 set_kernel_config CONFIG_NFT_QUOTA m
172 172 set_kernel_config CONFIG_NFT_REDIR m
173 173 set_kernel_config CONFIG_NFT_REDIR_IPV4 m
174 174 set_kernel_config CONFIG_NFT_REDIR_IPV6 m
175 175 set_kernel_config CONFIG_NFT_REJECT m
176 176 set_kernel_config CONFIG_NFT_REJECT_INET m
177 177 set_kernel_config CONFIG_NFT_REJECT_IPV4 m
178 178 set_kernel_config CONFIG_NFT_REJECT_IPV6 m
179 179 set_kernel_config CONFIG_NFT_SET_HASH m
180 180 set_kernel_config CONFIG_NFT_SET_RBTREE m
181 181 set_kernel_config CONFIG_NF_CONNTRACK_IPV4 m
182 182 set_kernel_config CONFIG_NF_CONNTRACK_IPV6 m
183 183 set_kernel_config CONFIG_NF_DEFRAG_IPV4 m
184 184 set_kernel_config CONFIG_NF_DEFRAG_IPV6 m
185 185 set_kernel_config CONFIG_NF_DUP_IPV4 m
186 186 set_kernel_config CONFIG_NF_DUP_IPV6 m
187 187 set_kernel_config CONFIG_NF_LOG_BRIDGE m
188 188 set_kernel_config CONFIG_NF_LOG_IPV4 m
189 189 set_kernel_config CONFIG_NF_LOG_IPV6 m
190 190 set_kernel_config CONFIG_NF_NAT_IPV4 m
191 191 set_kernel_config CONFIG_NF_NAT_IPV6 m
192 192 set_kernel_config CONFIG_NF_NAT_MASQUERADE_IPV4 m
193 193 set_kernel_config CONFIG_NF_NAT_MASQUERADE_IPV6 m
194 194 set_kernel_config CONFIG_NF_NAT_PPTP m
195 195 set_kernel_config CONFIG_NF_NAT_PROTO_GRE m
196 196 set_kernel_config CONFIG_NF_NAT_REDIRECT m
197 197 set_kernel_config CONFIG_NF_NAT_SNMP_BASIC m
198 198 set_kernel_config CONFIG_NF_NAT_TFTP m
199 199 set_kernel_config CONFIG_NF_REJECT_IPV4 m
200 200 set_kernel_config CONFIG_NF_REJECT_IPV6 m
201 201 set_kernel_config CONFIG_NF_TABLES_INET m
202 202 set_kernel_config CONFIG_NF_TABLES_IPV4 m
203 203 set_kernel_config CONFIG_NF_TABLES_IPV6 m
204 204 set_kernel_config CONFIG_NF_TABLES_NETDEV m
205 205 set_kernel_config NETFILTER_XTABLES m
206 206 fi
207 207
208 208 #https://groups.google.com/forum/#!topic/linux.gentoo.user/_2aSc_ztGpA
209 209 #https://github.com/torvalds/linux/blob/master/init/Kconfig#L848
210 210 # Enables BPF syscall for systemd-journald
211 211 if [ "$KERNEL_BPF" = true ] && { [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; } ; then
212 212 set_kernel_config CONFIG_BPF_SYSCALL y
213 213 set_kernel_config CONFIG_CGROUP_BPF y
214 214 fi
215 215
216 216 #Revert to previous directory
217 217 cd "${R}"
218 218
219 219 # Set kernel configuration parameters to enable qemu emulation
220 220 if [ "$ENABLE_QEMU" = true ] ; then
221 221 echo "CONFIG_FHANDLE=y" >> "${KERNEL_DIR}"/.config
222 222 echo "CONFIG_LBDAF=y" >> "${KERNEL_DIR}"/.config
223 223
224 224 if [ "$ENABLE_CRYPTFS" = true ] ; then
225 225 {
226 226 echo "CONFIG_EMBEDDED=y"
227 227 echo "CONFIG_EXPERT=y"
228 228 echo "CONFIG_DAX=y"
229 229 echo "CONFIG_MD=y"
230 230 echo "CONFIG_BLK_DEV_MD=y"
231 231 echo "CONFIG_MD_AUTODETECT=y"
232 232 echo "CONFIG_BLK_DEV_DM=y"
233 233 echo "CONFIG_BLK_DEV_DM_BUILTIN=y"
234 234 echo "CONFIG_DM_CRYPT=y"
235 235 echo "CONFIG_CRYPTO_BLKCIPHER=y"
236 236 echo "CONFIG_CRYPTO_CBC=y"
237 237 echo "CONFIG_CRYPTO_XTS=y"
238 238 echo "CONFIG_CRYPTO_SHA512=y"
239 239 echo "CONFIG_CRYPTO_MANAGER=y"
240 240 } >> "${KERNEL_DIR}/.config"
241 241 fi
242 242 fi
243 243
244 244 # Copy custom kernel configuration file
245 245 if [ -n "$KERNELSRC_USRCONFIG" ] ; then
246 246 cp "$KERNELSRC_USRCONFIG" "${KERNEL_DIR}"/.config
247 247 fi
248 248
249 249 # Set kernel configuration parameters to their default values
250 250 if [ "$KERNEL_OLDDEFCONFIG" = true ] ; then
251 251 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" olddefconfig
252 252 fi
253 253
254 254 # Start menu-driven kernel configuration (interactive)
255 255 if [ "$KERNEL_MENUCONFIG" = true ] ; then
256 256 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" menuconfig
257 257 fi
258 258 fi
259 259
260 260 # Use ccache to cross compile the kernel
261 261 if [ "$KERNEL_CCACHE" = true ] ; then
262 262 cc="ccache ${CROSS_COMPILE}gcc"
263 263 else
264 264 cc="${CROSS_COMPILE}gcc"
265 265 fi
266 266
267 267 # Cross compile kernel and dtbs
268 268 make -C "${KERNEL_DIR}" -j"${KERNEL_THREADS}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" CC="${cc}" "${KERNEL_BIN_IMAGE}" dtbs
269 269
270 270 # Cross compile kernel modules
271 271 if grep -q "CONFIG_MODULES=y" "${KERNEL_DIR}/.config" ; then
272 272 make -C "${KERNEL_DIR}" -j"${KERNEL_THREADS}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" CC="${cc}" modules
273 273 fi
274 274 fi
275 275
276 276 # Check if kernel compilation was successful
277 277 if [ ! -r "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" ] ; then
278 278 echo "error: kernel compilation failed! (kernel image not found)"
279 279 cleanup
280 280 exit 1
281 281 fi
282 282
283 283 # Install kernel modules
284 284 if [ "$ENABLE_REDUCE" = true ] ; then
285 285 if grep -q "CONFIG_MODULES=y" "${KERNEL_DIR}/.config" ; then
286 286 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=../../.. modules_install
287 287 fi
288 288 else
289 289 if grep -q "CONFIG_MODULES=y" "${KERNEL_DIR}/.config" ; then
290 290 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_PATH=../../.. modules_install
291 291 fi
292 292
293 293 # Install kernel firmware
294 294 if grep -q "^firmware_install:" "${KERNEL_DIR}/Makefile" ; then
295 295 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_FW_PATH=../../../lib firmware_install
296 296 fi
297 297 fi
298 298
299 299 # Install kernel headers
300 300 if [ "$KERNEL_HEADERS" = true ] && [ "$KERNEL_REDUCE" = false ] ; then
301 301 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_HDR_PATH=../.. headers_install
302 302 fi
303 303 # make tar.gz kernel package - missing os bzw. modules
304 304 #** ** ** WARNING ** ** **
305 305 #Your architecture did not define any architecture-dependent files
306 306 #to be placed into the tarball. Please add those to ./scripts/package/buildtar .
307 307 # make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" CC="${cc}" targz-pkg
308 308
309 309 # Prepare boot (firmware) directory
310 310 mkdir "${BOOT_DIR}"
311 311
312 312 # Get kernel release version
313 313 KERNEL_VERSION=$(cat "${KERNEL_DIR}/include/config/kernel.release")
314 314
315 315 # Copy kernel configuration file to the boot directory
316 316 install_readonly "${KERNEL_DIR}/.config" "${R}/boot/config-${KERNEL_VERSION}"
317 317
318 318 # Prepare device tree directory
319 319 mkdir "${BOOT_DIR}/overlays"
320 320
321 321 # Ensure the proper .dtb is located
322 322 if [ "$KERNEL_ARCH" = "arm" ] ; then
323 323 for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/"*.dtb ; do
324 324 if [ -f "${dtb}" ] ; then
325 325 install_readonly "${dtb}" "${BOOT_DIR}/"
326 326 fi
327 327 done
328 328 else
329 329 for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/broadcom/"*.dtb ; do
330 330 if [ -f "${dtb}" ] ; then
331 331 install_readonly "${dtb}" "${BOOT_DIR}/"
332 332 fi
333 333 done
334 334 fi
335 335
336 336 # Copy compiled dtb device tree files
337 337 if [ -d "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays" ] ; then
338 338 for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/"*.dtb ; do
339 339 if [ -f "${dtb}" ] ; then
340 340 install_readonly "${dtb}" "${BOOT_DIR}/overlays/"
341 341 fi
342 342 done
343 343
344 344 if [ -f "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/README" ] ; then
345 345 install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/README" "${BOOT_DIR}/overlays/README"
346 346 fi
347 347 fi
348 348
349 349 if [ "$ENABLE_UBOOT" = false ] ; then
350 350 # Convert and copy kernel image to the boot directory
351 351 "${KERNEL_DIR}/scripts/mkknlimg" "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" "${BOOT_DIR}/${KERNEL_IMAGE}"
352 352 else
353 353 # Copy kernel image to the boot directory
354 354 install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" "${BOOT_DIR}/${KERNEL_IMAGE}"
355 355 fi
356 356
357 357 # Remove kernel sources
358 358 if [ "$KERNEL_REMOVESRC" = true ] ; then
359 359 rm -fr "${KERNEL_DIR}"
360 360 else
361 361 # Prepare compiled kernel modules
362 362 if grep -q "CONFIG_MODULES=y" "${KERNEL_DIR}/.config" ; then
363 363 if grep -q "^modules_prepare:" "${KERNEL_DIR}/Makefile" ; then
364 364 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" modules_prepare
365 365 fi
366 366
367 367 # Create symlinks for kernel modules
368 368 chroot_exec ln -sf /usr/src/linux "/lib/modules/${KERNEL_VERSION}/build"
369 369 chroot_exec ln -sf /usr/src/linux "/lib/modules/${KERNEL_VERSION}/source"
370 370 fi
371 371 fi
372 372
373 373 else # BUILD_KERNEL=false
374 374 # echo Install precompiled kernel...
375 375 # echo error: not implemented
376 376 if [ "$KERNEL_ARCH" = arm64 ] && { [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; } ; then
377 377 # Create temporary directory for dl
378 378 temp_dir=$(as_nobody mktemp -d)
379 379
380 380 # Fetch kernel dl
381 381 as_nobody wget -O "${temp_dir}"/kernel.tar.xz -c "$RPI3_64_KERNEL_URL"
382 382 #extract download
383 383 tar -xJf "${temp_dir}"/kernel.tar.xz -C "${temp_dir}"
384 384
385 385 #move extracted kernel to /boot/firmware
386 386 mkdir "${R}/boot/firmware"
387 387 cp "${temp_dir}"/boot/* "${R}"/boot/firmware/
388 388 cp -r "${temp_dir}"/lib/* "${R}"/lib/
389 389
390 390 # Remove temporary directory for kernel sources
391 391 rm -fr "${temp_dir}"
392 392 # Set permissions of the kernel sources
393 393 chown -R root:root "${R}/boot/firmware"
394 394 chown -R root:root "${R}/lib/modules"
395 395 #Create cmdline.txt for 15-rpi-config.sh
396 396 touch "${BOOT_DIR}/cmdline.txt"
397 397 fi
398 398
399 399 # Check if kernel installation was successful
400 400 KERNEL="$(ls -1 "${R}"/boot/firmware/kernel* | sort | tail -n 1)"
401 401 if [ -z "$KERNEL" ] ; then
402 402 echo "error: kernel installation failed! (/boot/kernel* not found)"
403 403 cleanup
404 404 exit 1
405 405 fi
406 406 fi
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