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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 [ "$BUILD_KERNEL" = true ] ; then
10 10 # Setup source directory
11 11 mkdir -p "${R}/usr/src/linux"
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 cp -r "${KERNELSRC_DIR}/". "${R}/usr/src/linux"
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 cp -r "${temp_dir}/linux/"* "${R}/usr/src/linux/"
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 83 "${KERNEL_DIR}/.config"
84 84 fi
85 85
86 86 #Switch to KERNELSRC_DIR
87 pushd "${KERNELSRC_DIR}"
87 pushd "${KERNEL_DIR}"
88 88
89 89 # GPL v2.0
90 90 #https://github.com/sakaki-/bcmrpi3-kernel-bis/blob/master/conform_config.sh
91 91 if [ "$KERNEL_ZSWAP" = true ] && ( [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ) ; then
92 92 # enable ZSWAP support for better performance during large builds etc.
93 93 # requires activation via kernel parameter or sysfs
94 94 # see e.g. https://askubuntu.com/a/472227 for a summary of ZSWAP (vs ZRAM etc.)
95 95 # and e.g. https://wiki.archlinux.org/index.php/zswap for parameters etc.
96 96
97 97 set_kernel_config ZPOOL y
98 98 set_kernel_config ZSWAP y
99 99 set_kernel_config ZBUD y
100 100 set_kernel_config Z3FOLD y
101 101 set_kernel_config ZSMALLOC y
102 102 set_kernel_config PGTABLE_MAPPING y
103 103 fi
104 104
105 105 if [ "$KERNEL_VIRT" = true ] && ( [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ) ; then
106 106 # enable basic KVM support; see e.g.
107 107 # https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=210546&start=25#p1300453
108 108
109 109 set_kernel_config VIRTUALIZATION y
110 110 set_kernel_config KVM y
111 111 set_kernel_config VHOST_NET m
112 112 set_kernel_config VHOST_CROSS_ENDIAN_LEGACY y
113 113 fi
114 114 #See https://github.com/raspberrypi/linux/issues/2177#issuecomment-354647406
115 115 # Netfilter kernel support
116 116 if [ "$KERNEL_NF" = true ] && ( [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ) ; then
117 117 # xtables
118 118 set_kernel_config NETFILTER_XTABLES m
119 119 # Netfilter nf_tables support
120 120 set_kernel_config NF_TABLES m
121 121
122 122 set_kernel_config CONFIG_NETFILTER_XTABLES m
123 123 set_kernel_config CONFIG_NF_TABLES_BRIDGE m
124 124
125 125 set_kernel_config CONFIG_NF_NAT_SIP m
126 126 set_kernel_config CONFIG_NF_NAT_TFTP m
127 127 set_kernel_config CONFIG_NF_NAT_REDIRECT m
128 128 set_kernel_config CONFIG_NF_TABLES_INET m
129 129 set_kernel_config CONFIG_NF_TABLES_NETDEV m
130 130 set_kernel_config CONFIG_NF_TABLES_ARP m
131 131 set_kernel_config CONFIG_NF_DUP_IPV4 m
132 132 set_kernel_config CONFIG_NF_LOG_IPV4 m
133 133 set_kernel_config CONFIG_NF_REJECT_IPV4 m
134 134 set_kernel_config CONFIG_NF_NAT_IPV4 m
135 135 set_kernel_config CONFIG_NF_DUP_NETDEV m
136 136 set_kernel_config CONFIG_NF_DEFRAG_IPV4 m
137 137 set_kernel_config CONFIG_NF_CONNTRACK_IPV4 m
138 138 set_kernel_config CONFIG_NF_TABLES_IPV4 m
139 139 set_kernel_config CONFIG_NF_NAT_MASQUERADE_IPV4 m
140 140 set_kernel_config CONFIG_NF_NAT_SNMP_BASIC m
141 141 set_kernel_config CONFIG_NF_NAT_PROTO_GRE m
142 142 set_kernel_config CONFIG_NF_NAT_PPTP m
143 143 set_kernel_config CONFIG_NF_DEFRAG_IPV6 m
144 144 set_kernel_config CONFIG_NF_CONNTRACK_IPV6 m
145 145 set_kernel_config CONFIG_NF_TABLES_IPV6 m
146 146 set_kernel_config CONFIG_NF_DUP_IPV6 m
147 147 set_kernel_config CONFIG_NF_REJECT_IPV6 m
148 148 set_kernel_config CONFIG_NF_LOG_IPV6 m
149 149 set_kernel_config CONFIG_NF_NAT_IPV6 m
150 150 set_kernel_config CONFIG_NF_NAT_MASQUERADE_IPV6 m
151 151
152 152 set_kernel_config CONFIG_NFT_EXTHDR m
153 153 set_kernel_config CONFIG_NFT_META m
154 154 set_kernel_config CONFIG_NFT_NUMGEN m
155 155 set_kernel_config CONFIG_NFT_CT m
156 156 set_kernel_config CONFIG_NFT_SET_RBTREE m
157 157 set_kernel_config CONFIG_NFT_SET_HASH m
158 158 set_kernel_config CONFIG_NFT_COUNTER m
159 159 set_kernel_config CONFIG_NFT_LOG m
160 160 set_kernel_config CONFIG_NFT_LIMIT m
161 161 set_kernel_config CONFIG_NFT_MASQ m
162 162 set_kernel_config CONFIG_NFT_REDIR m
163 163 set_kernel_config CONFIG_NFT_NAT m
164 164 set_kernel_config CONFIG_NFT_QUEUE m
165 165 set_kernel_config CONFIG_NFT_QUOTA m
166 166 set_kernel_config CONFIG_NFT_REJECT m
167 167 set_kernel_config CONFIG_NFT_REJECT_INET m
168 168 set_kernel_config CONFIG_NFT_COMPAT m
169 169 set_kernel_config CONFIG_NFT_HASH m
170 170 set_kernel_config CONFIG_NFT_DUP_NETDEV m
171 171 set_kernel_config CONFIG_NFT_FWD_NETDEV m
172 172 set_kernel_config CONFIG_NFT_CHAIN_ROUTE_IPV4 m
173 173 set_kernel_config CONFIG_NFT_REJECT_IPV4 m
174 174 set_kernel_config CONFIG_NFT_DUP_IPV4 m
175 175 set_kernel_config CONFIG_NFT_CHAIN_NAT_IPV4 m
176 176 set_kernel_config CONFIG_NFT_MASQ_IPV4 m
177 177 set_kernel_config CONFIG_NFT_REDIR_IPV4 m
178 178 set_kernel_config CONFIG_NFT_CHAIN_ROUTE_IPV6 m
179 179 set_kernel_config CONFIG_NFT_REJECT_IPV6 m
180 180 set_kernel_config CONFIG_NFT_DUP_IPV6 m
181 181 set_kernel_config CONFIG_NFT_CHAIN_NAT_IPV6 m
182 182 set_kernel_config CONFIG_NFT_MASQ_IPV6 m
183 183 set_kernel_config CONFIG_NFT_REDIR_IPV6 m
184 184 set_kernel_config CONFIG_NFT_BRIDGE_META m
185 185 set_kernel_config CONFIG_NFT_BRIDGE_REJECT m
186 186
187 187 set_kernel_config CONFIG_IP_SET_BITMAP_IPMAC m
188 188 set_kernel_config CONFIG_IP_SET_BITMAP_PORT m
189 189 set_kernel_config CONFIG_IP_SET_HASH_IP m
190 190 set_kernel_config CONFIG_IP_SET_HASH_IPMARK m
191 191 set_kernel_config CONFIG_IP_SET_HASH_IPPORT m
192 192 set_kernel_config CONFIG_IP_SET_HASH_IPPORTIP m
193 193 set_kernel_config CONFIG_IP_SET_HASH_IPPORTNET m
194 194 set_kernel_config CONFIG_IP_SET_HASH_MAC m
195 195 set_kernel_config CONFIG_IP_SET_HASH_NETPORTNET m
196 196 set_kernel_config CONFIG_IP_SET_HASH_NET m
197 197 set_kernel_config CONFIG_IP_SET_HASH_NETNET m
198 198 set_kernel_config CONFIG_IP_SET_HASH_NETPORT m
199 199 set_kernel_config CONFIG_IP_SET_HASH_NETIFACE m
200 200 set_kernel_config CONFIG_IP_SET_LIST_SET m
201 201
202 202 set_kernel_config CONFIG_IP6_NF_IPTABLES m
203 203 set_kernel_config CONFIG_IP6_NF_MATCH_AH m
204 204 set_kernel_config CONFIG_IP6_NF_MATCH_EUI64 m
205 205 set_kernel_config CONFIG_IP6_NF_NAT m
206 206 set_kernel_config CONFIG_IP6_NF_TARGET_MASQUERADE m
207 207 set_kernel_config CONFIG_IP6_NF_TARGET_NPT m
208 208
209 209 set_kernel_config CONFIG_NF_LOG_BRIDGE m
210 210 set_kernel_config CONFIG_BRIDGE_NF_EBTABLES m
211 211 set_kernel_config CONFIG_BRIDGE_EBT_BROUTE m
212 212 set_kernel_config CONFIG_BRIDGE_EBT_T_FILTER m
213 213 fi
214 214
215 215 #https://groups.google.com/forum/#!topic/linux.gentoo.user/_2aSc_ztGpA
216 216 #https://github.com/torvalds/linux/blob/master/init/Kconfig#L848
217 217 # Enables BPF syscall for systemd-journald
218 218 if [ "$KERNEL_BPF" = true ] && ( [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ) ; then
219 219 set_kernel_config CONFIG_BPF_SYSCALL y
220 220 set_kernel_config CONFIG_CGROUP_BPF y
221 221 fi
222 222
223 223 popd
224 224
225 225 if [ "$KERNELSRC_CONFIG" = true ] ; then
226 226 # Load default raspberry kernel configuration
227 227 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" "${KERNEL_DEFCONFIG}"
228 228
229 229 # Set kernel configuration parameters to enable qemu emulation
230 230 if [ "$ENABLE_QEMU" = true ] ; then
231 231 echo "CONFIG_FHANDLE=y" >> "${KERNEL_DIR}"/.config
232 232 echo "CONFIG_LBDAF=y" >> "${KERNEL_DIR}"/.config
233 233
234 234 if [ "$ENABLE_CRYPTFS" = true ] ; then
235 235 {
236 236 echo "CONFIG_EMBEDDED=y"
237 237 echo "CONFIG_EXPERT=y"
238 238 echo "CONFIG_DAX=y"
239 239 echo "CONFIG_MD=y"
240 240 echo "CONFIG_BLK_DEV_MD=y"
241 241 echo "CONFIG_MD_AUTODETECT=y"
242 242 echo "CONFIG_BLK_DEV_DM=y"
243 243 echo "CONFIG_BLK_DEV_DM_BUILTIN=y"
244 244 echo "CONFIG_DM_CRYPT=y"
245 245 echo "CONFIG_CRYPTO_BLKCIPHER=y"
246 246 echo "CONFIG_CRYPTO_CBC=y"
247 247 echo "CONFIG_CRYPTO_XTS=y"
248 248 echo "CONFIG_CRYPTO_SHA512=y"
249 249 echo "CONFIG_CRYPTO_MANAGER=y"
250 250 } >> ${KERNEL_DIR}/.config
251 251 fi
252 252 fi
253 253
254 254 # Copy custom kernel configuration file
255 255 if [ -n "$KERNELSRC_USRCONFIG" ] ; then
256 256 cp "$KERNELSRC_USRCONFIG" "${KERNEL_DIR}"/.config
257 257 fi
258 258
259 259 # Set kernel configuration parameters to their default values
260 260 if [ "$KERNEL_OLDDEFCONFIG" = true ] ; then
261 261 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" olddefconfig
262 262 fi
263 263
264 264 # Start menu-driven kernel configuration (interactive)
265 265 if [ "$KERNEL_MENUCONFIG" = true ] ; then
266 266 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" menuconfig
267 267 fi
268 268 fi
269 269
270 270 # Use ccache to cross compile the kernel
271 271 if [ "$KERNEL_CCACHE" = true ] ; then
272 272 cc="ccache ${CROSS_COMPILE}gcc"
273 273 else
274 274 cc="${CROSS_COMPILE}gcc"
275 275 fi
276 276
277 277 # Cross compile kernel and dtbs
278 278 make -C "${KERNEL_DIR}" -j"${KERNEL_THREADS}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" CC="${cc}" "${KERNEL_BIN_IMAGE}" dtbs
279 279
280 280 # Cross compile kernel modules
281 281 if [ "$(grep "CONFIG_MODULES=y" "${KERNEL_DIR}/.config")" ] ; then
282 282 make -C "${KERNEL_DIR}" -j"${KERNEL_THREADS}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" CC="${cc}" modules
283 283 fi
284 284 fi
285 285
286 286 # Check if kernel compilation was successful
287 287 if [ ! -r "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" ] ; then
288 288 echo "error: kernel compilation failed! (kernel image not found)"
289 289 cleanup
290 290 exit 1
291 291 fi
292 292
293 293 # Install kernel modules
294 294 if [ "$ENABLE_REDUCE" = true ] ; then
295 295 if [ "$(grep "CONFIG_MODULES=y" "${KERNEL_DIR}/.config")" ] ; then
296 296 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=../../.. modules_install
297 297 fi
298 298 else
299 299 if [ "$(grep "CONFIG_MODULES=y" "${KERNEL_DIR}/.config")" ] ; then
300 300 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_MOD_PATH=../../.. modules_install
301 301 fi
302 302
303 303 # Install kernel firmware
304 304 if [ "$(grep "^firmware_install:" "${KERNEL_DIR}/Makefile")" ] ; then
305 305 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_FW_PATH=../../../lib firmware_install
306 306 fi
307 307 fi
308 308
309 309 # Install kernel headers
310 310 if [ "$KERNEL_HEADERS" = true ] && [ "$KERNEL_REDUCE" = false ] ; then
311 311 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" INSTALL_HDR_PATH=../.. headers_install
312 312 fi
313 313 # make tar.gz kernel package - missing os bzw. modules
314 314 #** ** ** WARNING ** ** **
315 315 #Your architecture did not define any architecture-dependent files
316 316 #to be placed into the tarball. Please add those to ./scripts/package/buildtar .
317 317 # make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" CC="${cc}" targz-pkg
318 318
319 319 # Prepare boot (firmware) directory
320 320 mkdir "${BOOT_DIR}"
321 321
322 322 # Get kernel release version
323 323 KERNEL_VERSION=$(cat "${KERNEL_DIR}/include/config/kernel.release")
324 324
325 325 # Copy kernel configuration file to the boot directory
326 326 install_readonly "${KERNEL_DIR}/.config" "${R}/boot/config-${KERNEL_VERSION}"
327 327
328 328 # Prepare device tree directory
329 329 mkdir "${BOOT_DIR}/overlays"
330 330
331 331 # Ensure the proper .dtb is located
332 332 if [ "$KERNEL_ARCH" = "arm" ] ; then
333 333 for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/"*.dtb ; do
334 334 if [ -f "${dtb}" ] ; then
335 335 install_readonly "${dtb}" "${BOOT_DIR}/"
336 336 fi
337 337 done
338 338 else
339 339 for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/broadcom/"*.dtb ; do
340 340 if [ -f "${dtb}" ] ; then
341 341 install_readonly "${dtb}" "${BOOT_DIR}/"
342 342 fi
343 343 done
344 344 fi
345 345
346 346 # Copy compiled dtb device tree files
347 347 if [ -d "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays" ] ; then
348 348 for dtb in "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/"*.dtb ; do
349 349 if [ -f "${dtb}" ] ; then
350 350 install_readonly "${dtb}" "${BOOT_DIR}/overlays/"
351 351 fi
352 352 done
353 353
354 354 if [ -f "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/README" ] ; then
355 355 install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/dts/overlays/README" "${BOOT_DIR}/overlays/README"
356 356 fi
357 357 fi
358 358
359 359 if [ "$ENABLE_UBOOT" = false ] ; then
360 360 # Convert and copy kernel image to the boot directory
361 361 "${KERNEL_DIR}/scripts/mkknlimg" "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" "${BOOT_DIR}/${KERNEL_IMAGE}"
362 362 else
363 363 # Copy kernel image to the boot directory
364 364 install_readonly "${KERNEL_DIR}/arch/${KERNEL_ARCH}/boot/${KERNEL_BIN_IMAGE}" "${BOOT_DIR}/${KERNEL_IMAGE}"
365 365 fi
366 366
367 367 # Remove kernel sources
368 368 if [ "$KERNEL_REMOVESRC" = true ] ; then
369 369 rm -fr "${KERNEL_DIR}"
370 370 else
371 371 # Prepare compiled kernel modules
372 372 if [ "$(grep "CONFIG_MODULES=y" "${KERNEL_DIR}/.config")" ] ; then
373 373 if [ "$(grep "^modules_prepare:" "${KERNEL_DIR}/Makefile")" ] ; then
374 374 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" modules_prepare
375 375 fi
376 376
377 377 # Create symlinks for kernel modules
378 378 chroot_exec ln -sf /usr/src/linux "/lib/modules/${KERNEL_VERSION}/build"
379 379 chroot_exec ln -sf /usr/src/linux "/lib/modules/${KERNEL_VERSION}/source"
380 380 fi
381 381 fi
382 382
383 383 else # BUILD_KERNEL=false
384 384 # echo " Install precompiled kernel..."
385 385 # echo "error: not implemented"
386 386 if [ "$KERNEL_ARCH" = arm64 ] && ( [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ) ; then
387 387 # Create temporary directory for dl
388 388 temp_dir=$(as_nobody mktemp -d)
389 389
390 390 # Fetch kernel dl
391 391 as_nobody wget -c "$RPI3_64_KERNEL_URL" "${temp_dir}"/kernel.tar.xz
392 392 #extract download
393 393 tar -xJf kernel.tar.xz -C "${R}"
394 394
395 395 # Remove temporary directory for kernel sources
396 396 rm -fr "${temp_dir}"
397 397
398 398 # Set permissions of the kernel sources
399 399 chown -R root:root "${R}/boot"
400 400 chown -R root:root "${R}/lib"
401 401 fi
402 402
403 403 # Check if kernel installation was successful
404 404 KERNEL="$(ls -1 "${R}"/boot/kernel* | sort | tail -n 1)"
405 405 if [ -z "$KERNEL" ] ; then
406 406 echo "error: kernel installation failed! (/boot/kernel* not found)"
407 407 cleanup
408 408 exit 1
409 409 fi
410 410
411 411 if [ "$SET_ARCH" = 64 ] ; then
412 412 echo "Using precompiled arm64 kernel"
413 413 else
414 414 echo "error: no precompiled arm64 (bcmrpi3) kernel found"
415 415 exit 1
416 416 # inset precompiled 64 bit kernel code here
417 417 fi
418 418 #fi build_kernel=true
419 419 fi
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