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Raspi2-3_GenImage
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Updated: Moved RPi2/3 related configs to new file 14-rpi-config.sh
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1 #
2 # Setup RPi2/3 config and cmdline
3 #
4
5 # Load utility functions
6 . ./functions.sh
7
8 if [ "$BUILD_KERNEL" = true ] ; then
9 if [ -n "$RPI_FIRMWARE_DIR" ] && [ -d "$RPI_FIRMWARE_DIR" ] ; then
10 # Install boot binaries from local directory
11 cp ${RPI_FIRMWARE_DIR}/boot/bootcode.bin ${BOOT_DIR}/bootcode.bin
12 cp ${RPI_FIRMWARE_DIR}/boot/fixup.dat ${BOOT_DIR}/fixup.dat
13 cp ${RPI_FIRMWARE_DIR}/boot/fixup_cd.dat ${BOOT_DIR}/fixup_cd.dat
14 cp ${RPI_FIRMWARE_DIR}/boot/fixup_x.dat ${BOOT_DIR}/fixup_x.dat
15 cp ${RPI_FIRMWARE_DIR}/boot/start.elf ${BOOT_DIR}/start.elf
16 cp ${RPI_FIRMWARE_DIR}/boot/start_cd.elf ${BOOT_DIR}/start_cd.elf
17 cp ${RPI_FIRMWARE_DIR}/boot/start_x.elf ${BOOT_DIR}/start_x.elf
18 else
19 # Install latest boot binaries from raspberry/firmware github
20 wget -q -O "${BOOT_DIR}/bootcode.bin" "${FIRMWARE_URL}/bootcode.bin"
21 wget -q -O "${BOOT_DIR}/fixup.dat" "${FIRMWARE_URL}/fixup.dat"
22 wget -q -O "${BOOT_DIR}/fixup_cd.dat" "${FIRMWARE_URL}/fixup_cd.dat"
23 wget -q -O "${BOOT_DIR}/fixup_x.dat" "${FIRMWARE_URL}/fixup_x.dat"
24 wget -q -O "${BOOT_DIR}/start.elf" "${FIRMWARE_URL}/start.elf"
25 wget -q -O "${BOOT_DIR}/start_cd.elf" "${FIRMWARE_URL}/start_cd.elf"
26 wget -q -O "${BOOT_DIR}/start_x.elf" "${FIRMWARE_URL}/start_x.elf"
27 fi
28 fi
29
30 # Setup firmware boot cmdline
31 if [ "$ENABLE_SPLITFS" = true ] ; then
32 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/sda1 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait console=tty1"
33 else
34 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait console=tty1"
35 fi
36
37 # Add encrypted root partition to cmdline.txt
38 if [ "$ENABLE_CRYPTFS" = true ] ; then
39 if [ "$ENABLE_SPLITFS" = true ] ; then
40 CMDLINE=$(echo ${CMDLINE} | sed "s/sda1/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/sda1:${CRYPTFS_MAPPING}/")
41 else
42 CMDLINE=$(echo ${CMDLINE} | sed "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/mmcblk0p2:${CRYPTFS_MAPPING}/")
43 fi
44 fi
45
46 # Add serial console support
47 if [ "$ENABLE_CONSOLE" = true ] ; then
48 CMDLINE="${CMDLINE} console=ttyAMA0,115200 kgdboc=ttyAMA0,115200"
49 fi
50
51 # Remove IPv6 networking support
52 if [ "$ENABLE_IPV6" = false ] ; then
53 CMDLINE="${CMDLINE} ipv6.disable=1"
54 fi
55
56 # Automatically assign predictable network interface names
57 if [ "$ENABLE_IFNAMES" = false ] ; then
58 CMDLINE="${CMDLINE} net.ifnames=0"
59 else
60 CMDLINE="${CMDLINE} net.ifnames=1"
61 fi
62
63 # Set init to systemd if required by Debian release
64 if [ "$RELEASE" = "stretch" ] ; then
65 CMDLINE="${CMDLINE} init=/bin/systemd"
66 fi
67
68 # Install firmware boot cmdline
69 echo "${CMDLINE}" > "${BOOT_DIR}/cmdline.txt"
70
71 # Install firmware config
72 install_readonly files/boot/config.txt "${BOOT_DIR}/config.txt"
73
74 # Setup minimal GPU memory allocation size: 16MB (no X)
75 if [ "$ENABLE_MINGPU" = true ] ; then
76 echo "gpu_mem=16" >> "${BOOT_DIR}/config.txt"
77 fi
78
79 # Setup boot with initramfs
80 if [ "$ENABLE_INITRAMFS" = true ] ; then
81 echo "initramfs initramfs-${KERNEL_VERSION} followkernel" >> "${BOOT_DIR}/config.txt"
82 fi
83
84 # Disable RPi3 Bluetooth and restore ttyAMA0 serial device
85 if [ "$RPI_MODEL" = 3 ] ; then
86 if [ "$ENABLE_CONSOLE" = true ] && [ "$ENABLE_UBOOT" = false ] ; then
87 echo "dtoverlay=pi3-disable-bt" >> "${BOOT_DIR}/config.txt"
88 echo "enable_uart=1" >> "${BOOT_DIR}/config.txt"
89 fi
90 fi
91
92 # Create firmware configuration and cmdline symlinks
93 ln -sf firmware/config.txt "${R}/boot/config.txt"
94 ln -sf firmware/cmdline.txt "${R}/boot/cmdline.txt"
95
96 # Install and setup kernel modules to load at boot
97 mkdir -p "${R}/lib/modules-load.d/"
98 install_readonly files/modules/rpi2.conf "${R}/lib/modules-load.d/rpi2.conf"
99
100 # Load hardware random module at boot
101 if [ "$ENABLE_HWRANDOM" = true ] && [ "$BUILD_KERNEL" = false ] ; then
102 sed -i "s/^# bcm2708_rng/bcm2708_rng/" "${R}/lib/modules-load.d/rpi2.conf"
103 fi
104
105 # Load sound module at boot
106 if [ "$ENABLE_SOUND" = true ] ; then
107 sed -i "s/^# snd_bcm2835/snd_bcm2835/" "${R}/lib/modules-load.d/rpi2.conf"
108 fi
109
110 # Enable I2C interface
111 if [ "$ENABLE_I2C" = true ] ; then
112 echo "dtparam=i2c_arm=on" >> "${BOOT_DIR}/config.txt"
113 sed -i "s/^# i2c-bcm2708/i2c-bcm2708/" "${R}/lib/modules-load.d/rpi2.conf"
114 sed -i "s/^# i2c-dev/i2c-dev/" "${R}/lib/modules-load.d/rpi2.conf"
115 fi
116
117 # Enable SPI interface
118 if [ "$ENABLE_SPI" = true ] ; then
119 echo "dtparam=spi=on" >> "${BOOT_DIR}/config.txt"
120 echo "spi-bcm2708" >> "${R}/lib/modules-load.d/rpi2.conf"
121 if [ "$RPI_MODEL" = 3 ] ; then
122 sed -i "s/spi-bcm2708/spi-bcm2835/" "${R}/lib/modules-load.d/rpi2.conf"
123 fi
124 fi
125
126 # Install kernel modules blacklist
127 mkdir -p "${ETC_DIR}/modprobe.d/"
128 install_readonly files/modules/raspi-blacklist.conf "${ETC_DIR}/modprobe.d/raspi-blacklist.conf"
129
130 # Install sysctl.d configuration files
131 install_readonly files/sysctl.d/81-rpi-vm.conf "${ETC_DIR}/sysctl.d/81-rpi-vm.conf"
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1 1 # rpi23-gen-image
2 2 ## Introduction
3 3 `rpi23-gen-image.sh` is an advanced Debian Linux bootstrapping shell script for generating Debian OS images for Raspberry Pi 2 (RPi2) and Raspberry Pi 3 (RPi3) computers. The script at this time supports the bootstrapping of the Debian (armhf) releases `jessie` and `stretch`. Raspberry Pi 3 images are currently generated for 32-bit mode only.
4 4
5 5 ## Build dependencies
6 6 The following list of Debian packages must be installed on the build system because they are essentially required for the bootstrapping process. The script will check if all required packages are installed and missing packages will be installed automatically if confirmed by the user.
7 7
8 8 ```debootstrap debian-archive-keyring qemu-user-static binfmt-support dosfstools rsync bmap-tools whois git bc psmisc```
9 9
10 10 It is recommended to configure the `rpi23-gen-image.sh` script to build and install the latest Raspberry Pi Linux kernel. For the RPi3 this is mandetory. Kernel compilation and linking will be performed on the build system using an ARM (armhf) cross-compiler toolchain.
11 11
12 12 The script has been tested using the default `crossbuild-essential-armhf` toolchain meta package on Debian Linux `jessie` and `stretch` build systems. Please check the [Debian CrossToolchains Wiki](https://wiki.debian.org/CrossToolchains) for further information.
13 13
14 14 If a Debian Linux `jessie` build system is used it will be required to add the [Debian Cross-toolchains repository](http://emdebian.org/tools/debian/) first:
15 15
16 16 ```
17 17 echo "deb http://emdebian.org/tools/debian/ jessie main" > /etc/apt/sources.list.d/crosstools.list
18 18 sudo -u nobody wget -O - http://emdebian.org/tools/debian/emdebian-toolchain-archive.key | apt-key add -
19 19 dpkg --add-architecture armhf
20 20 apt-get update
21 21 ```
22 22
23 23 ## Command-line parameters
24 24 The script accepts certain command-line parameters to enable or disable specific OS features, services and configuration settings. These parameters are passed to the `rpi23-gen-image.sh` script via (simple) shell-variables. Unlike environment shell-variables (simple) shell-variables are defined at the beginning of the command-line call of the `rpi23-gen-image.sh` script.
25 25
26 26 #####Command-line examples:
27 27 ```shell
28 28 ENABLE_UBOOT=true ./rpi23-gen-image.sh
29 29 ENABLE_CONSOLE=false ENABLE_IPV6=false ./rpi23-gen-image.sh
30 30 ENABLE_WM=xfce4 ENABLE_FBTURBO=true ENABLE_MINBASE=true ./rpi23-gen-image.sh
31 31 ENABLE_HARDNET=true ENABLE_IPTABLES=true /rpi23-gen-image.sh
32 32 APT_SERVER=ftp.de.debian.org APT_PROXY="http://127.0.0.1:3142/" ./rpi23-gen-image.sh
33 33 ENABLE_MINBASE=true ./rpi23-gen-image.sh
34 34 BUILD_KERNEL=true ENABLE_MINBASE=true ENABLE_IPV6=false ./rpi23-gen-image.sh
35 35 BUILD_KERNEL=true KERNELSRC_DIR=/tmp/linux ./rpi23-gen-image.sh
36 36 ENABLE_MINBASE=true ENABLE_REDUCE=true ENABLE_MINGPU=true BUILD_KERNEL=true ./rpi23-gen-image.sh
37 37 ENABLE_CRYPTFS=true CRYPTFS_PASSWORD=changeme EXPANDROOT=false ENABLE_MINBASE=true ENABLE_REDUCE=true ENABLE_MINGPU=true BUILD_KERNEL=true ./rpi23-gen-image.sh
38 38 RELEASE=stretch BUILD_KERNEL=true ./rpi23-gen-image.sh
39 39 RPI_MODEL=3 ENABLE_WIRELESS=true ENABLE_MINBASE=true BUILD_KERNEL=true ./rpi23-gen-image.sh
40 40 RELEASE=stretch RPI_MODEL=3 ENABLE_WIRELESS=true ENABLE_MINBASE=true BUILD_KERNEL=true ./rpi23-gen-image.sh
41 41 ```
42 42
43 43 ## Configuration template files
44 44 To avoid long lists of command-line parameters and to help to store the favourite parameter configurations the `rpi23-gen-image.sh` script supports so called configuration template files (`CONFIG_TEMPLATE`=template). These are simple text files located in the `./templates` directory that contain the list of configuration parameters that will be used. New configuration template files can be added to the `./templates` directory.
45 45
46 46 #####Command-line examples:
47 47 ```shell
48 48 CONFIG_TEMPLATE=rpi3stretch ./rpi23-gen-image.sh
49 49 CONFIG_TEMPLATE=rpi2stretch ./rpi23-gen-image.sh
50 50 ```
51 51
52 52 ## Supported parameters and settings
53 53 #### APT settings:
54 54 ##### `APT_SERVER`="ftp.debian.org"
55 55 Set Debian packages server address. Choose a server from the list of Debian worldwide [mirror sites](https://www.debian.org/mirror/list). Using a nearby server will probably speed-up all required downloads within the bootstrapping process.
56 56
57 57 ##### `APT_PROXY`=""
58 58 Set Proxy server address. Using a local Proxy-Cache like `apt-cacher-ng` will speed-up the bootstrapping process because all required Debian packages will only be downloaded from the Debian mirror site once.
59 59
60 60 ##### `APT_INCLUDES`=""
61 61 A comma separated list of additional packages to be installed during bootstrapping.
62 62
63 63 #### General system settings:
64 64 ##### `RPI_MODEL`=2
65 65 Specifiy the target Raspberry Pi hardware model. The script at this time supports the Raspberry Pi models `2` and `3`. `BUILD_KERNEL`=true will automatically be set if the Raspberry Pi model `3` is used.
66 66
67 67 ##### `RELEASE`="jessie"
68 68 Set the desired Debian release name. The script at this time supports the bootstrapping of the Debian releases "jessie" and "stretch". `BUILD_KERNEL`=true will automatically be set if the Debian release `stretch` is used.
69 69
70 70 ##### `HOSTNAME`="rpi$RPI_MODEL-$RELEASE"
71 71 Set system host name. It's recommended that the host name is unique in the corresponding subnet.
72 72
73 73 ##### `PASSWORD`="raspberry"
74 74 Set system `root` password. It's **STRONGLY** recommended that you choose a custom password.
75 75
76 76 ##### `USER_PASSWORD`="raspberry"
77 77 Set password for the created non-root user `USER_NAME`=pi. Ignored if `ENABLE_USER`=false. It's **STRONGLY** recommended that you choose a custom password.
78 78
79 79 ##### `DEFLOCAL`="en_US.UTF-8"
80 80 Set default system locale. This setting can also be changed inside the running OS using the `dpkg-reconfigure locales` command. Please note that on using this parameter the script will automatically install the required packages `locales`, `keyboard-configuration` and `console-setup`.
81 81
82 82 ##### `TIMEZONE`="Europe/Berlin"
83 83 Set default system timezone. All available timezones can be found in the `/usr/share/zoneinfo/` directory. This setting can also be changed inside the running OS using the `dpkg-reconfigure tzdata` command.
84 84
85 85 ##### `EXPANDROOT`=true
86 86 Expand the root partition and filesystem automatically on first boot.
87 87
88 88 #### Keyboard settings:
89 89 These options are used to configure keyboard layout in `/etc/default/keyboard` for console and Xorg. These settings can also be changed inside the running OS using the `dpkg-reconfigure keyboard-configuration` command.
90 90
91 91 ##### `XKB_MODEL`=""
92 92 Set the name of the model of your keyboard type.
93 93
94 94 ##### `XKB_LAYOUT`=""
95 95 Set the supported keyboard layout(s).
96 96
97 97 ##### `XKB_VARIANT`=""
98 98 Set the supported variant(s) of the keyboard layout(s).
99 99
100 100 ##### `XKB_OPTIONS`=""
101 101 Set extra xkb configuration options.
102 102
103 103 #### Networking settings (DHCP):
104 104 This parameter is used to set up networking auto configuration in `/etc/systemd/network/eth.network`. The default location of network configuration files in the Debian `stretch` release was changed to `/lib/systemd/network`.`
105 105
106 106 #####`ENABLE_DHCP`=true
107 107 Set the system to use DHCP. This requires an DHCP server.
108 108
109 109 #### Networking settings (static):
110 110 These parameters are used to set up a static networking configuration in `/etc/systemd/network/eth.network`. The following static networking parameters are only supported if `ENABLE_DHCP` was set to `false`. The default location of network configuration files in the Debian `stretch` release was changed to `/lib/systemd/network`.
111 111
112 112 #####`NET_ADDRESS`=""
113 113 Set a static IPv4 or IPv6 address and its prefix, separated by "/", eg. "192.169.0.3/24".
114 114
115 115 #####`NET_GATEWAY`=""
116 116 Set the IP address for the default gateway.
117 117
118 118 #####`NET_DNS_1`=""
119 119 Set the IP address for the first DNS server.
120 120
121 121 #####`NET_DNS_2`=""
122 122 Set the IP address for the second DNS server.
123 123
124 124 #####`NET_DNS_DOMAINS`=""
125 125 Set the default DNS search domains to use for non fully qualified host names.
126 126
127 127 #####`NET_NTP_1`=""
128 128 Set the IP address for the first NTP server.
129 129
130 130 #####`NET_NTP_2`=""
131 131 Set the IP address for the second NTP server.
132 132
133 133 #### Basic system features:
134 134 ##### `ENABLE_CONSOLE`=true
135 135 Enable serial console interface. Recommended if no monitor or keyboard is connected to the RPi2/3. In case of problems fe. if the network (auto) configuration failed - the serial console can be used to access the system.
136 136
137 137 ##### `ENABLE_I2C`=false
138 138 Enable I2C interface on the RPi2/3. Please check the [RPi2/3 pinout diagrams](http://elinux.org/RPi_Low-level_peripherals) to connect the right GPIO pins.
139 139
140 140 ##### `ENABLE_SPI`=false
141 141 Enable SPI interface on the RPi2/3. Please check the [RPi2/3 pinout diagrams](http://elinux.org/RPi_Low-level_peripherals) to connect the right GPIO pins.
142 142
143 143 ##### `ENABLE_IPV6`=true
144 144 Enable IPv6 support. The network interface configuration is managed via systemd-networkd.
145 145
146 146 ##### `ENABLE_SSHD`=true
147 147 Install and enable OpenSSH service. The default configuration of the service doesn't allow `root` to login. Please use the user `pi` instead and `su -` or `sudo` to execute commands as root.
148 148
149 149 ##### `ENABLE_NONFREE`=false
150 150 Allow the installation of non-free Debian packages that do not comply with the DFSG. This is required to install closed-source firmware binary blobs.
151 151
152 152 ##### `ENABLE_WIRELESS`=false
153 153 Download and install the [closed-source firmware binary blob](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm80211/brcm) that is required to run the internal wireless interface of the Raspberry Pi model `3`. This parameter is ignored if the specified `RPI_MODEL` is not `3`.
154 154
155 155 ##### `ENABLE_RSYSLOG`=true
156 156 If set to false, disable and uninstall rsyslog (so logs will be available only
157 157 in journal files)
158 158
159 159 ##### `ENABLE_SOUND`=true
160 160 Enable sound hardware and install Advanced Linux Sound Architecture.
161 161
162 162 ##### `ENABLE_HWRANDOM`=true
163 163 Enable Hardware Random Number Generator. Strong random numbers are important for most network based communications that use encryption. It's recommended to be enabled.
164 164
165 165 ##### `ENABLE_MINGPU`=false
166 166 Minimize the amount of shared memory reserved for the GPU. It doesn't seem to be possible to fully disable the GPU.
167 167
168 168 ##### `ENABLE_DBUS`=true
169 169 Install and enable D-Bus message bus. Please note that systemd should work without D-bus but it's recommended to be enabled.
170 170
171 171 ##### `ENABLE_XORG`=false
172 172 Install Xorg open-source X Window System.
173 173
174 174 ##### `ENABLE_WM`=""
175 175 Install a user defined window manager for the X Window System. To make sure all X related package dependencies are getting installed `ENABLE_XORG` will automatically get enabled if `ENABLE_WM` is used. The `rpi23-gen-image.sh` script has been tested with the following list of window managers: `blackbox`, `openbox`, `fluxbox`, `jwm`, `dwm`, `xfce4`, `awesome`.
176 176
177 177 #### Advanced system features:
178 178 ##### `ENABLE_MINBASE`=false
179 179 Use debootstrap script variant `minbase` which only includes essential packages and apt. This will reduce the disk usage by about 65 MB.
180 180
181 181 ##### `ENABLE_REDUCE`=false
182 182 Reduce the disk space usage by deleting packages and files. See `REDUCE_*` parameters for detailed information.
183 183
184 184 ##### `ENABLE_UBOOT`=false
185 185 Replace the default RPi2/3 second stage bootloader (bootcode.bin) with [U-Boot bootloader](http://git.denx.de/?p=u-boot.git;a=summary). U-Boot can boot images via the network using the BOOTP/TFTP protocol.
186 186
187 187 ##### `ENABLE_FBTURBO`=false
188 188 Install and enable the [hardware accelerated Xorg video driver](https://github.com/ssvb/xf86-video-fbturbo) `fbturbo`. Please note that this driver is currently limited to hardware accelerated window moving and scrolling.
189 189
190 190 ##### `ENABLE_IPTABLES`=false
191 191 Enable iptables IPv4/IPv6 firewall. Simplified ruleset: Allow all outgoing connections. Block all incoming connections except to OpenSSH service.
192 192
193 193 ##### `ENABLE_USER`=true
194 194 Create non-root user with password `USER_PASSWORD`=raspberry. Unless overridden with `USER_NAME`=user, username will be `pi`.
195 195
196 196 ##### `USER_NAME`=pi
197 197 Non-root user to create. Ignored if `ENABLE_USER`=false
198 198
199 199 ##### `ENABLE_ROOT`=false
200 200 Set root user password so root login will be enabled
201 201
202 202 ##### `ENABLE_HARDNET`=false
203 203 Enable IPv4/IPv6 network stack hardening settings.
204 204
205 205 ##### `ENABLE_SPLITFS`=false
206 206 Enable having root partition on an USB drive by creating two image files: one for the `/boot/firmware` mount point, and another for `/`.
207 207
208 208 ##### `CHROOT_SCRIPTS`=""
209 209 Path to a directory with scripts that should be run in the chroot before the image is finally built. Every executable file in this directory is run in lexicographical order.
210 210
211 211 ##### `ENABLE_INITRAMFS`=false
212 212 Create an initramfs that that will be loaded during the Linux startup process. `ENABLE_INITRAMFS` will automatically get enabled if `ENABLE_CRYPTFS`=true. This parameter will be ignored if `BUILD_KERNEL`=false.
213 213
214 214 ##### `ENABLE_IFNAMES`=true
215 215 Enable automatic assignment of predictable, stable network interface names for all local Ethernet, WLAN interfaces. This might create complex and long interface names. This parameter is only supported if the Debian release `stretch` is used.
216 216
217 217 #### SSH settings:
218 218 ##### `SSH_ENABLE_ROOT`=false
219 219 Enable password root login via SSH. This may be a security risk with default password, use only in trusted environments. `ENABLE_ROOT` must be set to `true`.
220 220
221 221 ##### `SSH_DISABLE_PASSWORD_AUTH`=false
222 222 Disable password based SSH authentication. Only public key based SSH (v2) authentication will be supported.
223 223
224 224 ##### `SSH_LIMIT_USERS`=false
225 225 Limit the users that are allowed to login via SSH. Only allow user `USER_NAME`=pi and root if `SSH_ENABLE_ROOT`=true to login.
226 226
227 227 ##### `SSH_ROOT_PUB_KEY`=""
228 228 Add SSH (v2) public key(s) from specified file to `authorized_keys` file to enable public key based SSH (v2) authentication of user `root`. The specified file can also contain multiple SSH (v2) public keys. SSH protocol version 1 is not supported. `ENABLE_ROOT` **and** `SSH_ENABLE_ROOT` must be set to `true`.
229 229
230 230 ##### `SSH_USER_PUB_KEY`=""
231 231 Add SSH (v2) public key(s) from specified file to `authorized_keys` file to enable public key based SSH (v2) authentication of user `USER_NAME`=pi. The specified file can also contain multiple SSH (v2) public keys. SSH protocol version 1 is not supported.
232 232
233 233 #### Kernel compilation:
234 234 ##### `BUILD_KERNEL`=false
235 235 Build and install the latest RPi2/3 Linux kernel. Currently only the default RPi2/3 kernel configuration is used. `BUILD_KERNEL`=true will automatically be set if the Raspberry Pi model `3` is used.
236 236
237 237 ##### `KERNEL_REDUCE`=false
238 238 Reduce the size of the generated kernel by removing unwanted device, network and filesystem drivers (experimental).
239 239
240 240 ##### `KERNEL_THREADS`=1
241 241 Number of parallel kernel building threads. If the parameter is left untouched the script will automatically determine the number of CPU cores to set the number of parallel threads to speed the kernel compilation.
242 242
243 243 ##### `KERNEL_HEADERS`=true
244 244 Install kernel headers with built kernel.
245 245
246 246 ##### `KERNEL_MENUCONFIG`=false
247 247 Start `make menuconfig` interactive menu-driven kernel configuration. The script will continue after `make menuconfig` was terminated.
248 248
249 249 ##### `KERNEL_REMOVESRC`=true
250 250 Remove all kernel sources from the generated OS image after it was built and installed.
251 251
252 252 ##### `KERNELSRC_DIR`=""
253 253 Path to a directory of [RaspberryPi Linux kernel sources](https://github.com/raspberrypi/linux) that will be copied, configured, build and installed inside the chroot.
254 254
255 255 ##### `KERNELSRC_CLEAN`=false
256 256 Clean the existing kernel sources directory `KERNELSRC_DIR` (using `make mrproper`) after it was copied to the chroot and before the compilation of the kernel has started. This parameter will be ignored if no `KERNELSRC_DIR` was specified or if `KERNELSRC_PREBUILT`=true.
257 257
258 258 ##### `KERNELSRC_CONFIG`=true
259 259 Run `make bcm2709_defconfig` (and optional `make menuconfig`) to configure the kernel sources before building. This parameter is automatically set to `true` if no existing kernel sources directory was specified using `KERNELSRC_DIR`. This parameter is ignored if `KERNELSRC_PREBUILT`=true.
260 260
261 261 ##### `KERNELSRC_USRCONFIG`=""
262 262 Copy own config file to kernel `.config`. If `KERNEL_MENUCONFIG`=true then running after copy.
263 263
264 264 ##### `KERNELSRC_PREBUILT`=false
265 265 With this parameter set to true the script expects the existing kernel sources directory to be already successfully cross-compiled. The parameters `KERNELSRC_CLEAN`, `KERNELSRC_CONFIG`, `KERNELSRC_USRCONFIG` and `KERNEL_MENUCONFIG` are ignored and no kernel compilation tasks are performed.
266 266
267 267 ##### `RPI_FIRMWARE_DIR`=""
268 268 The directory containing a local copy of the firmware from the [RaspberryPi firmware project](https://github.com/raspberrypi/firmware). Default is to download the latest firmware directly from the project.
269 269
270 270 #### Reduce disk usage:
271 271 The following list of parameters is ignored if `ENABLE_REDUCE`=false.
272 272
273 273 ##### `REDUCE_APT`=true
274 274 Configure APT to use compressed package repository lists and no package caching files.
275 275
276 276 ##### `REDUCE_DOC`=true
277 277 Remove all doc files (harsh). Configure APT to not include doc files on future `apt-get` package installations.
278 278
279 279 ##### `REDUCE_MAN`=true
280 280 Remove all man pages and info files (harsh). Configure APT to not include man pages on future `apt-get` package installations.
281 281
282 282 ##### `REDUCE_VIM`=false
283 283 Replace `vim-tiny` package by `levee` a tiny vim clone.
284 284
285 285 ##### `REDUCE_BASH`=false
286 286 Remove `bash` package and switch to `dash` shell (experimental).
287 287
288 288 ##### `REDUCE_HWDB`=true
289 289 Remove PCI related hwdb files (experimental).
290 290
291 291 ##### `REDUCE_SSHD`=true
292 292 Replace `openssh-server` with `dropbear`.
293 293
294 294 ##### `REDUCE_LOCALE`=true
295 295 Remove all `locale` translation files.
296 296
297 297 #### Encrypted root partition:
298 298
299 299 ##### `ENABLE_CRYPTFS`=false
300 300 Enable full system encryption with dm-crypt. Setup a fully LUKS encrypted root partition (aes-xts-plain64:sha512) and generate required initramfs. The /boot directory will not be encrypted. This parameter will be ignored if `BUILD_KERNEL`=false. `ENABLE_CRYPTFS` is experimental. SSH-to-initramfs is currently not supported but will be soon - feel free to help.
301 301
302 302 ##### `CRYPTFS_PASSWORD`=""
303 303 Set password of the encrypted root partition. This parameter is mandatory if `ENABLE_CRYPTFS`=true.
304 304
305 305 ##### `CRYPTFS_MAPPING`="secure"
306 306 Set name of dm-crypt managed device-mapper mapping.
307 307
308 308 ##### `CRYPTFS_CIPHER`="aes-xts-plain64:sha512"
309 309 Set cipher specification string. `aes-xts*` ciphers are strongly recommended.
310 310
311 311 ##### `CRYPTFS_XTSKEYSIZE`=512
312 312 Sets key size in bits. The argument has to be a multiple of 8.
313 313
314 314 ## Understanding the script
315 315 The functions of this script that are required for the different stages of the bootstrapping are split up into single files located inside the `bootstrap.d` directory. During the bootstrapping every script in this directory gets executed in lexicographical order:
316 316
317 317 | Script | Description |
318 318 | --- | --- |
319 319 | `10-bootstrap.sh` | Debootstrap basic system |
320 320 | `11-apt.sh` | Setup APT repositories |
321 321 | `12-locale.sh` | Setup Locales and keyboard settings |
322 322 | `13-kernel.sh` | Build and install RPi2/3 Kernel |
323 | `14-rpi-config.sh` | Setup RPi2/3 config and cmdline |
323 324 | `20-networking.sh` | Setup Networking |
324 325 | `21-firewall.sh` | Setup Firewall |
325 326 | `30-security.sh` | Setup Users and Security settings |
326 327 | `31-logging.sh` | Setup Logging |
327 328 | `32-sshd.sh` | Setup SSH and public keys |
328 329 | `41-uboot.sh` | Build and Setup U-Boot |
329 330 | `42-fbturbo.sh` | Build and Setup fbturbo Xorg driver |
330 331 | `50-firstboot.sh` | First boot actions |
331 332 | `99-reduce.sh` | Reduce the disk space usage |
332 333
333 334 All the required configuration files that will be copied to the generated OS image are located inside the `files` directory. It is not recommended to modify these configuration files manually.
334 335
335 336 | Directory | Description |
336 337 | --- | --- |
337 338 | `apt` | APT management configuration files |
338 339 | `boot` | Boot and RPi2/3 configuration files |
339 340 | `dpkg` | Package Manager configuration |
340 341 | `etc` | Configuration files and rc scripts |
341 342 | `firstboot` | Scripts that get executed on first boot |
342 343 | `initramfs` | Initramfs scripts |
343 344 | `iptables` | Firewall configuration files |
344 345 | `locales` | Locales configuration |
345 346 | `modules` | Kernel Modules configuration |
346 347 | `mount` | Fstab configuration |
347 348 | `network` | Networking configuration files |
348 349 | `sysctl.d` | Swapping and Network Hardening configuration |
349 350 | `xorg` | fbturbo Xorg driver configuration |
350 351
351 352 ## Custom packages and scripts
352 353 Debian custom packages, i.e. those not in the debian repositories, can be installed by placing them in the `packages` directory. They are installed immediately after packages from the repositories are installed. Any dependencies listed in the custom packages will be downloaded automatically from the repositories. Do not list these custom packages in `APT_INCLUDES`.
353 354
354 355 Scripts in the custom.d directory will be executed after all other installation is complete but before the image is created.
355 356
356 357 ## Logging of the bootstrapping process
357 358 All information related to the bootstrapping process and the commands executed by the `rpi23-gen-image.sh` script can easily be saved into a logfile. The common shell command `script` can be used for this purpose:
358 359
359 360 ```shell
360 361 script -c 'APT_SERVER=ftp.de.debian.org ./rpi23-gen-image.sh' ./build.log
361 362 ```
362 363
363 364 ## Flashing the image file
364 365 After the image file was successfully created by the `rpi23-gen-image.sh` script it can be copied to the microSD card that will be used by the RPi2/3 computer. This can be performed by using the tools `bmaptool` or `dd`. Using `bmaptool` will probably speed-up the copy process because `bmaptool` copies more wisely than `dd`.
365 366
366 367 #####Flashing examples:
367 368 ```shell
368 369 bmaptool copy ./images/jessie/2017-01-23-rpi3-jessie.img /dev/mmcblk0
369 370 dd bs=4M if=./images/jessie/2017-01-23-rpi3-jessie.img of=/dev/mmcblk0
370 371 ```
371 372 If you have set `ENABLE_SPLITFS`, copy the `-frmw` image on the microSD card, then the `-root` one on the USB drive:
372 373 ```shell
373 374 bmaptool copy ./images/jessie/2017-01-23-rpi3-jessie-frmw.img /dev/mmcblk0
374 375 bmaptool copy ./images/jessie/2017-01-23-rpi3-jessie-root.img /dev/sdc
375 376 ```
376 377
377 378 ## External links and references
378 379 * [Debian worldwide mirror sites](https://www.debian.org/mirror/list)
379 380 * [Debian Raspberry Pi 2 Wiki](https://wiki.debian.org/RaspberryPi2)
380 381 * [Debian CrossToolchains Wiki](https://wiki.debian.org/CrossToolchains)
381 382 * [Official Raspberry Pi Firmware on github](https://github.com/raspberrypi/firmware)
382 383 * [Official Raspberry Pi Kernel on github](https://github.com/raspberrypi/linux)
383 384 * [U-BOOT git repository](http://git.denx.de/?p=u-boot.git;a=summary)
384 385 * [Xorg DDX driver fbturbo](https://github.com/ssvb/xf86-video-fbturbo)
385 386 * [RPi3 Wireless interface firmware](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm80211/brcm)
386 387 * [Collabora RPi2 Kernel precompiled](https://repositories.collabora.co.uk/debian/)
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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"
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 "${KERNEL_DIR}"
136 136 else
137 #make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" oldconfig
138 137 make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" modules_prepare
139 #make -C "${KERNEL_DIR}" ARCH="${KERNEL_ARCH}" CROSS_COMPILE="${CROSS_COMPILE}" mrproper
140 fi
141
142 if [ -n "$RPI_FIRMWARE_DIR" ] && [ -d "$RPI_FIRMWARE_DIR" ] ; then
143 # Install boot binaries from local directory
144 cp ${RPI_FIRMWARE_DIR}/boot/bootcode.bin ${BOOT_DIR}/bootcode.bin
145 cp ${RPI_FIRMWARE_DIR}/boot/fixup.dat ${BOOT_DIR}/fixup.dat
146 cp ${RPI_FIRMWARE_DIR}/boot/fixup_cd.dat ${BOOT_DIR}/fixup_cd.dat
147 cp ${RPI_FIRMWARE_DIR}/boot/fixup_x.dat ${BOOT_DIR}/fixup_x.dat
148 cp ${RPI_FIRMWARE_DIR}/boot/start.elf ${BOOT_DIR}/start.elf
149 cp ${RPI_FIRMWARE_DIR}/boot/start_cd.elf ${BOOT_DIR}/start_cd.elf
150 cp ${RPI_FIRMWARE_DIR}/boot/start_x.elf ${BOOT_DIR}/start_x.elf
151 else
152 # Install latest boot binaries from raspberry/firmware github
153 wget -q -O "${BOOT_DIR}/bootcode.bin" "${FIRMWARE_URL}/bootcode.bin"
154 wget -q -O "${BOOT_DIR}/fixup.dat" "${FIRMWARE_URL}/fixup.dat"
155 wget -q -O "${BOOT_DIR}/fixup_cd.dat" "${FIRMWARE_URL}/fixup_cd.dat"
156 wget -q -O "${BOOT_DIR}/fixup_x.dat" "${FIRMWARE_URL}/fixup_x.dat"
157 wget -q -O "${BOOT_DIR}/start.elf" "${FIRMWARE_URL}/start.elf"
158 wget -q -O "${BOOT_DIR}/start_cd.elf" "${FIRMWARE_URL}/start_cd.elf"
159 wget -q -O "${BOOT_DIR}/start_x.elf" "${FIRMWARE_URL}/start_x.elf"
160 138 fi
161 139
162 140 else # BUILD_KERNEL=false
163 141 # Kernel installation
164 142 chroot_exec apt-get -qq -y --no-install-recommends install linux-image-"${COLLABORA_KERNEL}" raspberrypi-bootloader-nokernel
165 143
166 144 # Install flash-kernel last so it doesn't try (and fail) to detect the platform in the chroot
167 145 chroot_exec apt-get -qq -y install flash-kernel
168 146
169 147 # Check if kernel installation was successful
170 148 VMLINUZ="$(ls -1 ${R}/boot/vmlinuz-* | sort | tail -n 1)"
171 149 if [ -z "$VMLINUZ" ] ; then
172 150 echo "error: kernel installation failed! (/boot/vmlinuz-* not found)"
173 151 cleanup
174 152 exit 1
175 153 fi
176 154 # Copy vmlinuz kernel to the boot directory
177 155 install_readonly "${VMLINUZ}" "${BOOT_DIR}/${KERNEL_IMAGE}"
178 156 fi
179 157
180 # Setup firmware boot cmdline
181 if [ "$ENABLE_SPLITFS" = true ] ; then
182 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/sda1 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait console=tty1"
183 else
184 CMDLINE="dwc_otg.lpm_enable=0 root=/dev/mmcblk0p2 rootfstype=ext4 rootflags=commit=100,data=writeback elevator=deadline rootwait console=tty1"
185 fi
186
187 # Add encrypted root partition to cmdline.txt
188 if [ "$ENABLE_CRYPTFS" = true ] ; then
189 if [ "$ENABLE_SPLITFS" = true ] ; then
190 CMDLINE=$(echo ${CMDLINE} | sed "s/sda1/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/sda1:${CRYPTFS_MAPPING}/")
191 else
192 CMDLINE=$(echo ${CMDLINE} | sed "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING} cryptdevice=\/dev\/mmcblk0p2:${CRYPTFS_MAPPING}/")
193 fi
194 fi
195
196 # Add serial console support
197 if [ "$ENABLE_CONSOLE" = true ] ; then
198 CMDLINE="${CMDLINE} console=ttyAMA0,115200 kgdboc=ttyAMA0,115200"
199 fi
200
201 # Remove IPv6 networking support
202 if [ "$ENABLE_IPV6" = false ] ; then
203 CMDLINE="${CMDLINE} ipv6.disable=1"
204 fi
205
206 # Automatically assign predictable network interface names
207 if [ "$ENABLE_IFNAMES" = false ] ; then
208 CMDLINE="${CMDLINE} net.ifnames=0"
209 else
210 CMDLINE="${CMDLINE} net.ifnames=1"
211 fi
212
213 # Set init to systemd if required by Debian release
214 if [ "$RELEASE" = "stretch" ] ; then
215 CMDLINE="${CMDLINE} init=/bin/systemd"
216 fi
217
218 # Install firmware boot cmdline
219 echo "${CMDLINE}" > "${BOOT_DIR}/cmdline.txt"
220
221 # Install firmware config
222 install_readonly files/boot/config.txt "${BOOT_DIR}/config.txt"
223
224 # Setup minimal GPU memory allocation size: 16MB (no X)
225 if [ "$ENABLE_MINGPU" = true ] ; then
226 echo "gpu_mem=16" >> "${BOOT_DIR}/config.txt"
227 fi
228
229 # Setup boot with initramfs
230 if [ "$ENABLE_INITRAMFS" = true ] ; then
231 echo "initramfs initramfs-${KERNEL_VERSION} followkernel" >> "${BOOT_DIR}/config.txt"
232 fi
233
234 # Disable RPi3 Bluetooth and restore ttyAMA0 serial device
235 if [ "$RPI_MODEL" = 3 ] ; then
236 if [ "$ENABLE_CONSOLE" = true ] && [ "$ENABLE_UBOOT" = false ] ; then
237 echo "dtoverlay=pi3-disable-bt" >> "${BOOT_DIR}/config.txt"
238 echo "enable_uart=1" >> "${BOOT_DIR}/config.txt"
239 fi
240 fi
241
242 # Create firmware configuration and cmdline symlinks
243 ln -sf firmware/config.txt "${R}/boot/config.txt"
244 ln -sf firmware/cmdline.txt "${R}/boot/cmdline.txt"
245
246 # Install and setup kernel modules to load at boot
247 mkdir -p "${R}/lib/modules-load.d/"
248 install_readonly files/modules/rpi2.conf "${R}/lib/modules-load.d/rpi2.conf"
249
250 # Load hardware random module at boot
251 if [ "$ENABLE_HWRANDOM" = true ] && [ "$BUILD_KERNEL" = false ] ; then
252 sed -i "s/^# bcm2708_rng/bcm2708_rng/" "${R}/lib/modules-load.d/rpi2.conf"
253 fi
254
255 # Load sound module at boot
256 if [ "$ENABLE_SOUND" = true ] ; then
257 sed -i "s/^# snd_bcm2835/snd_bcm2835/" "${R}/lib/modules-load.d/rpi2.conf"
258 fi
259
260 # Enable I2C interface
261 if [ "$ENABLE_I2C" = true ] ; then
262 echo "dtparam=i2c_arm=on" >> "${BOOT_DIR}/config.txt"
263 sed -i "s/^# i2c-bcm2708/i2c-bcm2708/" "${R}/lib/modules-load.d/rpi2.conf"
264 sed -i "s/^# i2c-dev/i2c-dev/" "${R}/lib/modules-load.d/rpi2.conf"
265 fi
266
267 # Enable SPI interface
268 if [ "$ENABLE_SPI" = true ] ; then
269 echo "dtparam=spi=on" >> "${BOOT_DIR}/config.txt"
270 echo "spi-bcm2708" >> "${R}/lib/modules-load.d/rpi2.conf"
271 if [ "$RPI_MODEL" = 3 ] ; then
272 sed -i "s/spi-bcm2708/spi-bcm2835/" "${R}/lib/modules-load.d/rpi2.conf"
273 fi
274 fi
275
276 # Install kernel modules blacklist
277 mkdir -p "${ETC_DIR}/modprobe.d/"
278 install_readonly files/modules/raspi-blacklist.conf "${ETC_DIR}/modprobe.d/raspi-blacklist.conf"
158 # Create symlinks for kernel modules
159 ln -sf "${KERNEL_DIR}" "${R}/lib/modules/${KERNEL_VERSION}/build"
160 ln -sf "${KERNEL_DIR}" "${R}/lib/modules/${KERNEL_VERSION}/source"
279 161
280 162 # Install and setup fstab
281 163 install_readonly files/mount/fstab "${ETC_DIR}/fstab"
282 164
283 165 # Add usb/sda disk root partition to fstab
284 166 if [ "$ENABLE_SPLITFS" = true ] && [ "$ENABLE_CRYPTFS" = false ] ; then
285 167 sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/fstab"
286 168 fi
287 169
288 170 # Add encrypted root partition to fstab and crypttab
289 171 if [ "$ENABLE_CRYPTFS" = true ] ; then
290 172 # Replace fstab root partition with encrypted partition mapping
291 173 sed -i "s/mmcblk0p2/mapper\/${CRYPTFS_MAPPING}/" "${ETC_DIR}/fstab"
292 174
293 175 # Add encrypted partition to crypttab and fstab
294 176 install_readonly files/mount/crypttab "${ETC_DIR}/crypttab"
295 177 echo "${CRYPTFS_MAPPING} /dev/mmcblk0p2 none luks" >> "${ETC_DIR}/crypttab"
296 178
297 179 if [ "$ENABLE_SPLITFS" = true ] ; then
298 180 # Add usb/sda disk to crypttab
299 181 sed -i "s/mmcblk0p2/sda1/" "${ETC_DIR}/crypttab"
300 182 fi
301 183 fi
302 184
303 185 # Generate initramfs file
304 186 if [ "$ENABLE_INITRAMFS" = true ] ; then
305 187 if [ "$ENABLE_CRYPTFS" = true ] ; then
306 188 # Include initramfs scripts to auto expand encrypted root partition
307 189 if [ "$EXPANDROOT" = true ] ; then
308 190 install_exec files/initramfs/expand_encrypted_rootfs "${ETC_DIR}/initramfs-tools/scripts/init-premount/expand_encrypted_rootfs"
309 191 install_exec files/initramfs/expand-premount "${ETC_DIR}/initramfs-tools/scripts/local-premount/expand-premount"
310 192 install_exec files/initramfs/expand-tools "${ETC_DIR}/initramfs-tools/hooks/expand-tools"
311 193 fi
312 194
313 195 # Disable SSHD inside initramfs
314 196 printf "#\n# DROPBEAR: [ y | n ]\n#\n\nDROPBEAR=n\n" >> "${ETC_DIR}/initramfs-tools/initramfs.conf"
315 197
316 198 # Dummy mapping required by mkinitramfs
317 199 echo "0 1 crypt $(echo ${CRYPTFS_CIPHER} | cut -d ':' -f 1) ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff 0 7:0 4096" | chroot_exec dmsetup create "${CRYPTFS_MAPPING}"
318 200
319 201 # Generate initramfs with encrypted root partition support
320 202 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
321 203
322 204 # Remove dummy mapping
323 205 chroot_exec cryptsetup close "${CRYPTFS_MAPPING}"
324 206 else
325 207 # Generate initramfs without encrypted root partition support
326 208 chroot_exec mkinitramfs -o "/boot/firmware/initramfs-${KERNEL_VERSION}" "${KERNEL_VERSION}"
327 209 fi
328 210 fi
329
330 # Install sysctl.d configuration files
331 install_readonly files/sysctl.d/81-rpi-vm.conf "${ETC_DIR}/sysctl.d/81-rpi-vm.conf"
332
333 # make symlinks
334 ln -sf "${KERNEL_DIR}" "${R}/lib/modules/${KERNEL_VERSION}/build"
335 ln -sf "${KERNEL_DIR}" "${R}/lib/modules/${KERNEL_VERSION}/source"
336
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