##// END OF EJS Templates
Added ENABLE_UBOOT support
Jan Wagner -
r3:ed1f379a7abf
parent child
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@@ -1,700 +1,739
1 1 #!/bin/sh
2 2
3 3 ########################################################################
4 4 # rpi2-gen-image.sh ver2a 12/2015
5 5 #
6 6 # Advanced debian "jessie" bootstrap script for RPi2
7 7 #
8 8 # This program is free software; you can redistribute it and/or
9 9 # modify it under the terms of the GNU General Public License
10 10 # as published by the Free Software Foundation; either version 2
11 11 # of the License, or (at your option) any later version.
12 12 #
13 13 # some parts based on rpi2-build-image:
14 14 # Copyright (C) 2015 Ryan Finnie <ryan@finnie.org>
15 15 # Copyright (C) 2015 Luca Falavigna <dktrkranz@debian.org>
16 16 ########################################################################
17 17
18 18 cleanup (){
19 19 set +x
20 20 set +e
21 21 echo "removing temporary mount points ..."
22 22 umount -l $R/proc 2> /dev/null
23 23 umount -l $R/sys 2> /dev/null
24 24 umount -l $R/dev/pts 2> /dev/null
25 25 umount "$BUILDDIR/mount/boot/firmware" 2> /dev/null
26 26 umount "$BUILDDIR/mount" 2> /dev/null
27 27 losetup -d "$EXT4_LOOP" 2> /dev/null
28 28 losetup -d "$VFAT_LOOP" 2> /dev/null
29 29 trap - 0 1 2 3 6
30 30 }
31 31
32 32 set -e
33 33 set -x
34 34
35 35 RELEASE=${RELEASE:=jessie}
36 36
37 37 # Build settings
38 38 BASEDIR=./images/${RELEASE}
39 39 BUILDDIR=${BASEDIR}/build
40 40
41 41 # General settings
42 42 HOSTNAME=${HOSTNAME:=rpi2-${RELEASE}}
43 43 PASSWORD=${PASSWORD:=raspberry}
44 44 DEFLOCAL=${DEFLOCAL:="en_US.UTF-8"}
45 45 TIMEZONE=${TIMEZONE:="Europe/Berlin"}
46 46
47 47 # APT settings
48 48 APT_PROXY=${APT_PROXY:=""}
49 49 APT_SERVER=${APT_SERVER:="ftp.debian.org"}
50 50
51 51 # Feature settings
52 52 ENABLE_CONSOLE=${ENABLE_CONSOLE:=true}
53 53 ENABLE_IPV6=${ENABLE_IPV6:=true}
54 54 ENABLE_SSHD=${ENABLE_SSHD:=true}
55 55 ENABLE_SOUND=${ENABLE_SOUND:=true}
56 56 ENABLE_SYSTEMD=${ENABLE_SYSTEMD:=true}
57 57 ENABLE_DBUS=${ENABLE_DBUS:=true}
58 58 ENABLE_HWRANDOM=${ENABLE_HWRANDOM:=true}
59 59 ENABLE_MINGPU=${ENABLE_MINGPU:=false}
60 60 ENABLE_XORG=${ENABLE_XORG:=false}
61 61 ENABLE_FLUXBOX=${ENABLE_FLUXBOX:=false}
62 62
63 63 # Advanced settings
64 ENABLE_UBOOT=${ENABLE_UBOOT:=false}
64 65 ENABLE_HARDNET=${ENABLE_HARDNET:=false}
65 66 ENABLE_IPTABLES=${ENABLE_IPTABLES:=false}
66 67
67 68 # Image chroot path
68 69 R=${BUILDDIR}/chroot
69 70
70 71 # Packages required for bootstrapping
71 REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static dosfstools rsync bmap-tools whois"
72 REQUIRED_PACKAGES="debootstrap debian-archive-keyring qemu-user-static dosfstools rsync bmap-tools whois git-core"
72 73
73 74 # Packages required in the chroot build enviroment
74 75 APT_INCLUDES="apt-transport-https,ca-certificates,debian-archive-keyring,dialog,locales,apt-utils,vim-tiny"
75 76
76 77 set +x
77 78
78 79 # Are we running as root?
79 80 if [ "$(id -u)" -ne "0" ] ; then
80 81 echo "this script must be executed with root privileges"
81 82 exit 1
82 83 fi
83 84
84 85 # Don't clobber an old build
85 86 if [ -e "$BUILDDIR" ]; then
86 87 echo "directory $BUILDDIR already exists, not proceeding"
87 88 exit 1
88 89 fi
89 90
90 91 set -x
91 92
92 93 # Call "cleanup" function on various signals and errors
93 94 trap cleanup 0 1 2 3 6
94 95
95 96 # Set up chroot directory
96 97 mkdir -p $R
97 98
98 99 # Install dependencies
99 100 apt-get -q -y install ${REQUIRED_PACKAGES}
100 101
101 102 # Use traditional SystemV init instead of systemd services
102 103 if [ "$ENABLE_SYSTEMD" = false ] ; then
103 104 APT_INCLUDES="${APT_INCLUDES},sysvinit-core"
104 105 fi
105 106
106 107 # Add dbus package, recommended if using systemd
107 108 if [ "$ENABLE_DBUS" = true ] ; then
108 109 APT_INCLUDES="${APT_INCLUDES},dbus"
109 110 fi
110 111
111 112 # Add openssh server package
112 113 if [ "$ENABLE_SSHD" = true ] ; then
113 114 APT_INCLUDES="${APT_INCLUDES},openssh-server"
114 115 fi
115 116
116 117 # Add rng-tools package
117 118 if [ "$ENABLE_HWRANDOM" = true ] ; then
118 119 APT_INCLUDES="${APT_INCLUDES},rng-tools"
119 120 fi
120 121
121 122 # Add xorg package
122 123 if [ "$ENABLE_XORG" = true ] ; then
123 124 APT_INCLUDES="${APT_INCLUDES},xorg"
124 125 fi
125 126
126 127 # Add fluxbox package with eterm
127 128 if [ "$ENABLE_FLUXBOX" = true ] ; then
128 129 APT_INCLUDES="${APT_INCLUDES},fluxbox,eterm"
129 130 fi
130 131
131 132 if [ -z "$APT_PROXY" ] ; then
132 133 APT_PROXY="http://"
133 134 fi
134 135
135 136 # Base debootstrap (unpack only)
136 137 debootstrap --arch=armhf --foreign --include=${APT_INCLUDES} $RELEASE $R ${APT_PROXY}${APT_SERVER}/debian
137 138 cp /usr/bin/qemu-arm-static $R/usr/bin
138 139
139 140 # Remove systemd releated packages from list of packages to be bootsrapped
140 141 if [ "$ENABLE_SYSTEMD" = false ] ; then
141 142 chroot $R sed -i -e 's/systemd systemd-sysv //g' /debootstrap/required
142 143 fi
143 144
144 145 # Copy debian-archive-keyring.pgp
145 146 chroot $R mkdir -p /usr/share/keyrings
146 147 cp /usr/share/keyrings/debian-archive-keyring.gpg $R/usr/share/keyrings/debian-archive-keyring.gpg
147 148
148 149 # Complete the bootstrapping proccess
149 150 chroot $R /debootstrap/debootstrap --second-stage
150 151
151 152 # Mount required filesystems
152 153 mount -t proc none $R/proc
153 154 mount -t sysfs none $R/sys
154 155 mount --bind /dev/pts $R/dev/pts
155 156
156 157 # Set up initial sources.list
157 158 cat <<EOM >$R/etc/apt/sources.list
158 159 deb http://${APT_SERVER}/debian ${RELEASE} main contrib
159 160 #deb-src http://${APT_SERVER}/debian ${RELEASE} main contrib
160 161
161 162 deb http://${APT_SERVER}/debian/ ${RELEASE}-updates main contrib
162 163 #deb-src http://${APT_SERVER}/debian/ ${RELEASE}-updates main contrib
163 164
164 165 deb http://security.debian.org/ ${RELEASE}/updates main contrib
165 166 #deb-src http://security.debian.org/ ${RELEASE}/updates main contrib
166 167
167 168 deb https://repositories.collabora.co.uk/debian ${RELEASE} rpi2
168 169 EOM
169 170
170 171 # Pin package flash-kernel to repositories.collabora.co.uk
171 172 cat <<EOM >$R/etc/apt/preferences.d/flash-kernel
172 173 Package: flash-kernel
173 174 Pin: origin repositories.collabora.co.uk
174 175 Pin-Priority: 1000
175 176 EOM
176 177
177 178 # Set up timezone
178 179 echo ${TIMEZONE} >$R/etc/timezone
179 180 LANG=C chroot $R dpkg-reconfigure -f noninteractive tzdata
180 181
181 182 # Set up default locales to "en_US.UTF-8" default
182 183 LANG=C chroot $R sed -i '/${DEFLOCAL}/s/^#//' /etc/locale.gen
183 184 LANG=C chroot $R locale-gen ${DEFLOCAL}
184 185
185 186 # Fetch APT public key "Collabora Raspbian Archive Signing Key <daniels@collabora.com>"
186 187 LANG=C chroot $R apt-key adv --keyserver hkp://pool.sks-keyservers.net --recv-keys ED4BF9140C50B1C5
187 188
188 189 # Upgrade package index and update all installed packages and changed dependencies
189 190 LANG=C chroot $R apt-get -q -y update
190 191 LANG=C chroot $R apt-get -q -y -u dist-upgrade
191 192
192 193 # Kernel installation
193 194 # Install flash-kernel last so it doesn't try (and fail) to detect the platform in the chroot
194 195
195 196 LANG=C chroot $R apt-get -q -y --force-yes --no-install-recommends install linux-image-3.18.0-trunk-rpi2
196 197 LANG=C chroot $R apt-get -q -y --force-yes install flash-kernel
197 198
198 199 VMLINUZ="$(ls -1 $R/boot/vmlinuz-* | sort | tail -n 1)"
199 200 [ -z "$VMLINUZ" ] && exit 1
200 201 mkdir -p $R/boot/firmware
201 202
202 203 # required boot binaries from raspberry/firmware github (commit: "kernel: Bump to 3.18.10")
203 204 wget -q -O $R/boot/firmware/bootcode.bin https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/bootcode.bin
204 205 wget -q -O $R/boot/firmware/fixup_cd.dat https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/fixup_cd.dat
205 206 wget -q -O $R/boot/firmware/fixup.dat https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/fixup.dat
206 207 wget -q -O $R/boot/firmware/fixup_x.dat https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/fixup_x.dat
207 208 wget -q -O $R/boot/firmware/start_cd.elf https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/start_cd.elf
208 209 wget -q -O $R/boot/firmware/start.elf https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/start.elf
209 210 wget -q -O $R/boot/firmware/start_x.elf https://github.com/raspberrypi/firmware/raw/cd355a9dd4f1f4de2e79b0c8e102840885cdf1de/boot/start_x.elf
210 211 cp $VMLINUZ $R/boot/firmware/kernel7.img
211 212
212 213 # Set up hosts
213 214 echo ${HOSTNAME} >$R/etc/hostname
214 215 cat <<EOM >$R/etc/hosts
215 216 127.0.0.1 localhost
216 217 127.0.1.1 ${HOSTNAME}
217 218 EOM
218 219
219 220 if [ "$ENABLE_IPV6" = true ] ; then
220 221 cat <<EOM >>$R/etc/hosts
221 222
222 223 ::1 localhost ip6-localhost ip6-loopback
223 224 ff02::1 ip6-allnodes
224 225 ff02::2 ip6-allrouters
225 226 EOM
226 227 fi
227 228
228 229 # Generate crypt(3) password string
229 230 ENCRYPTED_PASSWORD=`mkpasswd -m sha-512 ${PASSWORD}`
230 231
231 232 # Set up default user
232 233 LANG=C chroot $R adduser --gecos "Raspberry PI user" --add_extra_groups --disabled-password pi
233 234 LANG=C chroot $R usermod -a -G sudo -p "${ENCRYPTED_PASSWORD}" pi
234 235
235 236 # Set up root password
236 237 LANG=C chroot $R usermod -p "${ENCRYPTED_PASSWORD}" root
237 238
238 # Clean cached downloads
239 LANG=C chroot $R apt-get -y clean
240 LANG=C chroot $R apt-get -y autoclean
241 LANG=C chroot $R apt-get -y autoremove
242 239
243 240 # Set up interfaces
244 241 cat <<EOM >$R/etc/network/interfaces
245 242 # interfaces(5) file used by ifup(8) and ifdown(8)
246 243 # Include files from /etc/network/interfaces.d:
247 244 source-directory /etc/network/interfaces.d
248 245
249 246 # The loopback network interface
250 247 auto lo
251 248 iface lo inet loopback
252 249
253 250 # The primary network interface
254 251 allow-hotplug eth0
255 252 iface eth0 inet dhcp
256 253 EOM
257 254
258 255 # Set up firmware boot cmdline
259 256 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait net.ifnames=1 console=tty1"
260 257
261 258 # Set up serial console support (if requested)
262 259 if [ "$ENABLE_CONSOLE" = true ] ; then
263 260 CMDLINE="${CMDLINE} console=ttyAMA0,115200 kgdboc=ttyAMA0,115200"
264 261 fi
265 262
266 263 # Set up ipv6 support (if requested)
267 264 if [ "$ENABLE_IPV6" = false ] ; then
268 265 CMDLINE="${CMDLINE} ipv6.disable=1"
269 266 fi
270 267
271 268 echo "${CMDLINE}" >$R/boot/firmware/cmdline.txt
272 269
273 270 # Set up firmware config
274 271 cat <<EOM >$R/boot/firmware/config.txt
275 272 # For more options and information see
276 273 # http://www.raspberrypi.org/documentation/configuration/config-txt.md
277 274 # Some settings may impact device functionality. See link above for details
278 275
279 276 # uncomment if you get no picture on HDMI for a default "safe" mode
280 277 #hdmi_safe=1
281 278
282 279 # uncomment this if your display has a black border of unused pixels visible
283 280 # and your display can output without overscan
284 281 #disable_overscan=1
285 282
286 283 # uncomment the following to adjust overscan. Use positive numbers if console
287 284 # goes off screen, and negative if there is too much border
288 285 #overscan_left=16
289 286 #overscan_right=16
290 287 #overscan_top=16
291 288 #overscan_bottom=16
292 289
293 290 # uncomment to force a console size. By default it will be display's size minus
294 291 # overscan.
295 292 #framebuffer_width=1280
296 293 #framebuffer_height=720
297 294
298 295 # uncomment if hdmi display is not detected and composite is being output
299 296 #hdmi_force_hotplug=1
300 297
301 298 # uncomment to force a specific HDMI mode (this will force VGA)
302 299 #hdmi_group=1
303 300 #hdmi_mode=1
304 301
305 302 # uncomment to force a HDMI mode rather than DVI. This can make audio work in
306 303 # DMT (computer monitor) modes
307 304 #hdmi_drive=2
308 305
309 306 # uncomment to increase signal to HDMI, if you have interference, blanking, or
310 307 # no display
311 308 #config_hdmi_boost=4
312 309
313 310 # uncomment for composite PAL
314 311 #sdtv_mode=2
315 312
316 313 #uncomment to overclock the arm. 700 MHz is the default.
317 314 #arm_freq=800
318 315 EOM
319 316
320 317 # Set smallest possible GPU memory allocation size: 16MB (no X)
321 318 if [ "$ENABLE_MINGPU" = true ] ; then
322 319 echo "gpu_mem=16" >>$R/boot/firmware/config.txt
323 320 fi
324 321
325 322 # Create symlinks
326 323 ln -sf firmware/config.txt $R/boot/config.txt
327 324 ln -sf firmware/cmdline.txt $R/boot/cmdline.txt
328 325
329 326 # Prepare modules-load.d directory
330 327 mkdir -p $R/lib/modules-load.d/
331 328
332 329 # Load random module on boot
333 330 if [ "$ENABLE_HWRANDOM" = true ] ; then
334 331 cat <<EOM >$R/lib/modules-load.d/rpi2.conf
335 332 bcm2708_rng
336 333 EOM
337 334 fi
338 335
339 336 # Prepare modprobe.d directory
340 337 mkdir -p $R/etc/modprobe.d/
341 338
342 339 # Blacklist sound modules
343 340 cat <<EOM >$R/etc/modprobe.d/raspi-blacklist.conf
344 341 blacklist snd_soc_core
345 342 blacklist snd_pcm
346 343 blacklist snd_pcm_dmaengine
347 344 blacklist snd_timer
348 345 blacklist snd_compress
349 346 blacklist snd_soc_pcm512x_i2c
350 347 blacklist snd_soc_pcm512x
351 348 blacklist snd_soc_tas5713
352 349 blacklist snd_soc_wm8804
353 350 EOM
354 351
355 352 # Create default fstab
356 353 cat <<EOM >$R/etc/fstab
357 354 /dev/mmcblk0p2 / ext4 noatime,nodiratime,errors=remount-ro,discard,data=writeback,commit=100 0 1
358 355 /dev/mmcblk0p1 /boot/firmware vfat defaults,noatime,nodiratime 0 2
359 356 EOM
360 357
361 358 # Avoid swapping and increase cache sizes
362 359 cat <<EOM >>$R/etc/sysctl.d/99-sysctl.conf
363 360
364 361 # Avoid swapping and increase cache sizes
365 362 vm.swappiness=1
366 363 vm.dirty_background_ratio=20
367 364 vm.dirty_ratio=40
368 365 vm.dirty_writeback_centisecs=500
369 366 vm.dirty_expire_centisecs=6000
370 367 EOM
371 368
372 369 # Enable network stack hardening
373 370 if [ "$ENABLE_HARDNET" = true ] ; then
374 371 cat <<EOM >>$R/etc/sysctl.d/99-sysctl.conf
375 372
376 373 # Enable network stack hardening
377 374 net.ipv4.tcp_timestamps=0
378 375 net.ipv4.tcp_syncookies=1
379 376 net.ipv4.conf.all.rp_filter=1
380 377 net.ipv4.conf.all.accept_redirects=0
381 378 net.ipv4.conf.all.send_redirects=0
382 379 net.ipv4.conf.all.accept_source_route=0
383 380 net.ipv4.conf.default.rp_filter=1
384 381 net.ipv4.conf.default.accept_redirects=0
385 382 net.ipv4.conf.default.send_redirects=0
386 383 net.ipv4.conf.default.accept_source_route=0
387 384 net.ipv4.conf.lo.accept_redirects=0
388 385 net.ipv4.conf.lo.send_redirects=0
389 386 net.ipv4.conf.lo.accept_source_route=0
390 387 net.ipv4.conf.eth0.accept_redirects=0
391 388 net.ipv4.conf.eth0.send_redirects=0
392 389 net.ipv4.conf.eth0.accept_source_route=0
393 390 net.ipv4.icmp_echo_ignore_broadcasts=1
394 391 net.ipv4.icmp_ignore_bogus_error_responses=1
395 392
396 393 net.ipv6.conf.all.accept_redirects=0
397 394 net.ipv6.conf.all.accept_source_route=0
398 395 net.ipv6.conf.all.router_solicitations=0
399 396 net.ipv6.conf.all.accept_ra_rtr_pref=0
400 397 net.ipv6.conf.all.accept_ra_pinfo=0
401 398 net.ipv6.conf.all.accept_ra_defrtr=0
402 399 net.ipv6.conf.all.autoconf=0
403 400 net.ipv6.conf.all.dad_transmits=0
404 401 net.ipv6.conf.all.max_addresses=1
405 402
406 403 net.ipv6.conf.default.accept_redirects=0
407 404 net.ipv6.conf.default.accept_source_route=0
408 405 net.ipv6.conf.default.router_solicitations=0
409 406 net.ipv6.conf.default.accept_ra_rtr_pref=0
410 407 net.ipv6.conf.default.accept_ra_pinfo=0
411 408 net.ipv6.conf.default.accept_ra_defrtr=0
412 409 net.ipv6.conf.default.autoconf=0
413 410 net.ipv6.conf.default.dad_transmits=0
414 411 net.ipv6.conf.default.max_addresses=1
415 412
416 413 net.ipv6.conf.lo.accept_redirects=0
417 414 net.ipv6.conf.lo.accept_source_route=0
418 415 net.ipv6.conf.lo.router_solicitations=0
419 416 net.ipv6.conf.lo.accept_ra_rtr_pref=0
420 417 net.ipv6.conf.lo.accept_ra_pinfo=0
421 418 net.ipv6.conf.lo.accept_ra_defrtr=0
422 419 net.ipv6.conf.lo.autoconf=0
423 420 net.ipv6.conf.lo.dad_transmits=0
424 421 net.ipv6.conf.lo.max_addresses=1
425 422
426 423 net.ipv6.conf.eth0.accept_redirects=0
427 424 net.ipv6.conf.eth0.accept_source_route=0
428 425 net.ipv6.conf.eth0.router_solicitations=0
429 426 net.ipv6.conf.eth0.accept_ra_rtr_pref=0
430 427 net.ipv6.conf.eth0.accept_ra_pinfo=0
431 428 net.ipv6.conf.eth0.accept_ra_defrtr=0
432 429 net.ipv6.conf.eth0.autoconf=0
433 430 net.ipv6.conf.eth0.dad_transmits=0
434 431 net.ipv6.conf.eth0.max_addresses=1
435 432 EOM
436 433
437 434 # Enable resolver warnings about spoofed addresses
438 435 cat <<EOM >>$R/etc/host.conf
439 436 spoof warn
440 437 EOM
441 438 fi
442 439
443 440 # Regenerate openssh server host keys
444 441 if [ "$ENABLE_SSHD" = true ] ; then
445 442 rm -fr $R/etc/ssh/ssh_host_*
446 443 LANG=C chroot $R dpkg-reconfigure openssh-server
447 444 fi
448 445
449 446 # Enable serial console systemd style
450 447 if [ "$ENABLE_CONSOLE" = true ] ; then
451 448 LANG=C chroot $R systemctl enable serial-getty\@ttyAMA0.service
452 449 fi
453 450
454 451 # Enable firewall based on iptables started by systemd service
455 452 if [ "$ENABLE_IPTABLES" = true ] ; then
456 453 # Create iptables configuration directory
457 454 mkdir -p "$R/etc/iptables"
458 455
459 456 # Create iptables systemd service
460 457 cat <<EOM >$R/etc/systemd/system/iptables.service
461 458 [Unit]
462 459 Description=Packet Filtering Framework
463 460 DefaultDependencies=no
464 461 After=systemd-sysctl.service
465 462 Before=sysinit.target
466 463 [Service]
467 464 Type=oneshot
468 465 ExecStart=/sbin/iptables-restore /etc/iptables/iptables.rules
469 466 ExecReload=/sbin/iptables-restore /etc/iptables/iptables.rules
470 467 ExecStop=/etc/iptables/flush-iptables.sh
471 468 RemainAfterExit=yes
472 469 [Install]
473 470 WantedBy=multi-user.target
474 471 EOM
475 472
476 473 # Create flush-table script called by iptables service
477 474 cat <<EOM >$R/etc/iptables/flush-iptables.sh
478 475 #!/bin/sh
479 476 iptables -F
480 477 iptables -X
481 478 iptables -t nat -F
482 479 iptables -t nat -X
483 480 iptables -t mangle -F
484 481 iptables -t mangle -X
485 482 iptables -P INPUT ACCEPT
486 483 iptables -P FORWARD ACCEPT
487 484 iptables -P OUTPUT ACCEPT
488 485 EOM
489 486
490 487 # Create iptables rule file
491 488 cat <<EOM >$R/etc/iptables/iptables.rules
492 489 *filter
493 490 :INPUT DROP [0:0]
494 491 :FORWARD DROP [0:0]
495 492 :OUTPUT ACCEPT [0:0]
496 493 :TCP - [0:0]
497 494 :UDP - [0:0]
498 495 :SSH - [0:0]
499 496
500 497 # Rate limit ping requests
501 498 -A INPUT -p icmp --icmp-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT
502 499 -A INPUT -p icmp --icmp-type echo-request -j DROP
503 500
504 501 # Accept established connections
505 502 -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
506 503
507 504 # Accept all traffic on loopback interface
508 505 -A INPUT -i lo -j ACCEPT
509 506
510 507 # Drop packets declared invalid
511 508 -A INPUT -m conntrack --ctstate INVALID -j DROP
512 509
513 510 # SSH rate limiting
514 511 -A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH
515 512 -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP
516 513 -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP
517 514 -A SSH -m recent --name sshbf --set -j ACCEPT
518 515
519 516 # Send TCP and UDP connections to their respective rules chain
520 517 -A INPUT -p udp -m conntrack --ctstate NEW -j UDP
521 518 -A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP
522 519
523 520 # Reject dropped packets with a RFC compliant responce
524 521 -A INPUT -p udp -j REJECT --reject-with icmp-port-unreachable
525 522 -A INPUT -p tcp -j REJECT --reject-with tcp-rst
526 523 -A INPUT -j REJECT --reject-with icmp-proto-unreachable
527 524
528 525 ## TCP PORT RULES
529 526 # -A TCP -p tcp -j LOG
530 527
531 528 ## UDP PORT RULES
532 529 # -A UDP -p udp -j LOG
533 530
534 531 COMMIT
535 532 EOM
536 533
537 534 # Reload systemd configuration and enable iptables service
538 535 LANG=C chroot $R systemctl daemon-reload
539 536 LANG=C chroot $R systemctl enable iptables.service
540 537
541 538 if [ "$ENABLE_IPV6" = true ] ; then
542 539 # Create ip6tables systemd service
543 540 cat <<EOM >$R/etc/systemd/system/ip6tables.service
544 541 [Unit]
545 542 Description=Packet Filtering Framework
546 543 DefaultDependencies=no
547 544 After=systemd-sysctl.service
548 545 Before=sysinit.target
549 546 [Service]
550 547 Type=oneshot
551 548 ExecStart=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules
552 549 ExecReload=/sbin/ip6tables-restore /etc/iptables/ip6tables.rules
553 550 ExecStop=/etc/iptables/flush-ip6tables.sh
554 551 RemainAfterExit=yes
555 552 [Install]
556 553 WantedBy=multi-user.target
557 554 EOM
558 555
559 556 # Create ip6tables file
560 557 cat <<EOM >$R/etc/iptables/flush-ip6tables.sh
561 558 #!/bin/sh
562 559 ip6tables -F
563 560 ip6tables -X
564 561 ip6tables -Z
565 562 for table in $(</proc/net/ip6_tables_names)
566 563 do
567 564 ip6tables -t \$table -F
568 565 ip6tables -t \$table -X
569 566 ip6tables -t \$table -Z
570 567 done
571 568 ip6tables -P INPUT ACCEPT
572 569 ip6tables -P OUTPUT ACCEPT
573 570 ip6tables -P FORWARD ACCEPT
574 571 EOM
575 572
576 573 # Create ip6tables rule file
577 574 cat <<EOM >$R/etc/iptables/ip6tables.rules
578 575 *filter
579 576 :INPUT DROP [0:0]
580 577 :FORWARD DROP [0:0]
581 578 :OUTPUT ACCEPT [0:0]
582 579 :TCP - [0:0]
583 580 :UDP - [0:0]
584 581 :SSH - [0:0]
585 582
586 583 # Drop packets with RH0 headers
587 584 -A INPUT -m rt --rt-type 0 -j DROP
588 585 -A OUTPUT -m rt --rt-type 0 -j DROP
589 586 -A FORWARD -m rt --rt-type 0 -j DROP
590 587
591 588 # Rate limit ping requests
592 589 -A INPUT -p icmpv6 --icmpv6-type echo-request -m limit --limit 30/min --limit-burst 8 -j ACCEPT
593 590 -A INPUT -p icmpv6 --icmpv6-type echo-request -j DROP
594 591
595 592 # Accept established connections
596 593 -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
597 594
598 595 # Accept all traffic on loopback interface
599 596 -A INPUT -i lo -j ACCEPT
600 597
601 598 # Drop packets declared invalid
602 599 -A INPUT -m conntrack --ctstate INVALID -j DROP
603 600
604 601 # SSH rate limiting
605 602 -A INPUT -p tcp --dport ssh -m conntrack --ctstate NEW -j SSH
606 603 -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 3 --seconds 10 -j DROP
607 604 -A SSH -m recent --name sshbf --rttl --rcheck --hitcount 20 --seconds 1800 -j DROP
608 605 -A SSH -m recent --name sshbf --set -j ACCEPT
609 606
610 607 # Send TCP and UDP connections to their respective rules chain
611 608 -A INPUT -p udp -m conntrack --ctstate NEW -j UDP
612 609 -A INPUT -p tcp --syn -m conntrack --ctstate NEW -j TCP
613 610
614 611 # Reject dropped packets with a RFC compliant responce
615 612 -A INPUT -p udp -j REJECT --reject-with icmp6-adm-prohibited
616 613 -A INPUT -p tcp -j REJECT --reject-with icmp6-adm-prohibited
617 614 -A INPUT -j REJECT --reject-with icmp6-adm-prohibited
618 615
619 616 ## TCP PORT RULES
620 617 # -A TCP -p tcp -j LOG
621 618
622 619 ## UDP PORT RULES
623 620 # -A UDP -p udp -j LOG
624 621
625 622 COMMIT
626 623 EOM
627 624
628 625 # Reload systemd configuration and enable iptables service
629 626 LANG=C chroot $R systemctl daemon-reload
630 627 LANG=C chroot $R systemctl enable ip6tables.service
631 628
632 629 fi
633 630 fi
634 631
632 if [ "$ENABLE_UBOOT" = true ] ; then
633 # Fetch u-boot github
634 git -C $R/tmp clone git://git.denx.de/u-boot.git
635
636 # Install minimal gcc/g++ build enviroment and build u-boot inside chroot
637 LANG=C chroot $R apt-get install -y --force-yes --no-install-recommends linux-compiler-gcc-4.9-arm g++ make bc
638 LANG=C chroot $R make -C /tmp/u-boot/ rpi_2_defconfig all
639
640 # Copy compiled bootloader binary and set config.txt to load it
641 cp $R/tmp/u-boot/u-boot.bin $R/boot/firmware/
642 printf "\n# boot u-boot kernel\nkernel=u-boot.bin\n" >> $R/boot/firmware/config.txt
643
644 # Set u-boot command file
645 cat <<EOM >$R/boot/firmware/uboot.mkimage
646 # Tell Linux that it is booting on a Raspberry Pi2
647 setenv machid 0x00000c42
648
649 # Set the kernel boot command line
650 setenv bootargs "earlyprintk ${CMDLINE}"
651
652 # Save these changes to u-boot's environment
653 saveenv
654
655 # Load the existing Linux kernel into RAM
656 fatload mmc 0:1 \${kernel_addr_r} kernel7.img
657
658 # Boot the kernel we have just loaded
659 bootz \${kernel_addr_r}
660 EOM
661
662 # Generate u-boot image from command file
663 LANG=C chroot $R mkimage -A arm -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n "RPi2 Boot Script" -d /boot/firmware/uboot.mkimage /boot/firmware/boot.scr
664
665 # Remove gcc/c++ build enviroment
666 LANG=C chroot $R apt-get purge -y bc binutils cpp cpp-4.9 g++ g++-4.9 gcc gcc-4.9 libasan1 libatomic1 libc-dev-bin libc6-dev libcloog-isl4 libgcc-4.9-dev libgomp1 libisl10 libmpc3 libmpfr4 libstdc++-4.9-dev libubsan0 linux-compiler-gcc-4.9-arm linux-libc-dev make
667 fi
668
669 # Clean cached downloads
670 LANG=C chroot $R apt-get -y clean
671 LANG=C chroot $R apt-get -y autoclean
672 LANG=C chroot $R apt-get -y autoremove
673
635 674 # Unmount mounted filesystems
636 675 umount -l $R/proc
637 676 umount -l $R/sys
638 677
639 678 # Clean up files
640 679 rm -f $R/etc/apt/sources.list.save
641 680 rm -f $R/etc/resolvconf/resolv.conf.d/original
642 681 rm -rf $R/run
643 682 mkdir -p $R/run
644 683 rm -f $R/etc/*-
645 684 rm -f $R/root/.bash_history
646 685 rm -rf $R/tmp/*
647 686 rm -f $R/var/lib/urandom/random-seed
648 687 [ -L $R/var/lib/dbus/machine-id ] || rm -f $R/var/lib/dbus/machine-id
649 688 rm -f $R/etc/machine-id
650 689
651 690 # Calculate size of the chroot directory
652 691 CHROOT_SIZE=$(expr `du -s $R | awk '{ print $1 }'` / 1024)
653 692
654 693 # Calculate required image size
655 694 IMAGE_SIZE=`expr $(expr ${CHROOT_SIZE} / 1024 + 1) \* 1024`
656 695
657 696 # Calculate number of sectors for the partition
658 697 IMAGE_SECTORS=`expr $(expr ${IMAGE_SIZE} \* 1048576) / 512 - 133120`
659 698
660 699 # Prepare date string for image file name
661 700 DATE="$(date +%Y-%m-%d)"
662 701
663 702 # Prepare image file
664 703 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}.img" bs=1M count=1
665 704 dd if=/dev/zero of="$BASEDIR/${DATE}-debian-${RELEASE}.img" bs=1M count=0 seek=${IMAGE_SIZE}
666 705
667 706 # Write partition table
668 707 sfdisk -q -L -f "$BASEDIR/${DATE}-debian-${RELEASE}.img" <<EOM
669 708 unit: sectors
670 709
671 710 1 : start= 2048, size= 131072, Id= c, bootable
672 711 2 : start= 133120, size= ${IMAGE_SECTORS}, Id=83
673 712 3 : start= 0, size= 0, Id= 0
674 713 4 : start= 0, size= 0, Id= 0
675 714 EOM
676 715
677 716 # Set up temporary loop devices and build filesystems
678 717 VFAT_LOOP="$(losetup -o 1M --sizelimit 64M -f --show $BASEDIR/${DATE}-debian-${RELEASE}.img)"
679 718 EXT4_LOOP="$(losetup -o 65M --sizelimit `expr ${IMAGE_SIZE} - 64`M -f --show $BASEDIR/${DATE}-debian-${RELEASE}.img)"
680 719 mkfs.vfat "$VFAT_LOOP"
681 720 mkfs.ext4 "$EXT4_LOOP"
682 721
683 722 # Mount the temporary loop devices
684 723 mkdir -p "$BUILDDIR/mount"
685 724 mount "$EXT4_LOOP" "$BUILDDIR/mount"
686 725
687 726 mkdir -p "$BUILDDIR/mount/boot/firmware"
688 727 mount "$VFAT_LOOP" "$BUILDDIR/mount/boot/firmware"
689 728
690 729 # Copy all files from the chroot to the loop device mount point directory
691 730 rsync -a "$R/" "$BUILDDIR/mount/"
692 731
693 732 # Unmount all temporary loop devices and mount points
694 733 cleanup
695 734
696 735 # (optinal) create block map file for "bmaptool"
697 736 bmaptool create -o "$BASEDIR/${DATE}-debian-${RELEASE}.bmap" "$BASEDIR/${DATE}-debian-${RELEASE}.img"
698 737
699 738 # Image was successfully created
700 739 echo "$BASEDIR/${DATE}-debian-${RELEASE}.img (${IMAGE_SIZE})" ": successfully created"
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