fwv

.fixtures.yml

@@ -3,4 +3,7 @@
 ---
 fixtures:
   forge_modules:
-    stdlib: "camptocamp/augeas"
+    stdlib: puppetlabs/stdlib  # dep of puppetlabs/concat
+    augeas: camptocamp/augeas
+    reboot: puppetlabs/reboot
+    concat: puppetlabs/concat

.mdl_style.rb

@@ -4,5 +4,6 @@
 rule "MD013", :code_blocks => false
 exclude_rule "MD003"
 exclude_rule "MD013"
-exclude_rule "MD036"
+exclude_rule "MD024"
 exclude_rule "MD034"
+exclude_rule "MD036"

.rubocop.yml

@@ -4,3 +4,5 @@
 
 inherit_gem:
   voxpupuli-test: rubocop.yml
+RSpec/BeforeAfterAll:
+  Enabled: false

README.md

@@ -4,3 +4,96 @@
 
 Manages features specific to [raspberrypi](https://www.raspberrypi.org/) and
 related fruit flavored hardware.
+
+## /boot/cmdline.txt
+
+### puppet
+
+```puppet
+class { 'pi::cmdline':
+  reboot     => false,  # reboots are problematic for acceptance testing
+  parameters => {
+    'coherent_pool=1M'     => {},
+    'bcm2708_fb.fbwidth=0' => {},
+    'bcm2708_fb.fbswap=1'  => {},
+  },
+}
+
+pi::cmdline::parameter { '8250.nr_uarts=0': }
+pi::cmdline::parameter { 'coherent_pool=1M': }
+pi::cmdline::parameter { 'snd_bcm2835.enable_headphones=0': }
+```
+
+### hiera
+
+```yaml
+pi::cmdline::reboot: false
+pi::cmdline::parameters:
+  coherent_pool=1M: {}
+  bcm2708_fb.fbwidth=0: {}
+  bcm2708_fb.fbswap=1: {}
+  8250.nr_uarts=0: {}
+  coherent_pool=1M: {}
+  snd_bcm2835.enable_headphones=0: {}
+```
+
+## /boot/config.txt
+
+### puppet
+
+```puppet
+class { 'pi::config':
+  reboot    => false,  # reboots are problematic for acceptance testing
+  fragments => {
+    'dtoverlay=pps-gpio,gpiopin=4' => {
+      'order' => 99,
+    },
+    'dtparam=i2c_arm=on'           => {
+      'order' => 1,
+    },
+    'dtparam=spi=on'               => {},
+    'serial port'                  => {
+      # lint:ignore:strict_indent
+      'content' => @("CONTENT"),
+        enable_uart=1
+        init_uart_baud=9600
+        | CONTENT
+      # lint:endignore
+    },
+  },
+}
+
+pi::config::fragment { 'disable_overscan=1': }
+pi::config::fragment { 'dtparam=audio=on':
+  order => 1,
+}
+pi::config::fragment { 'hdmi_mode=1':
+  order => 99,
+}
+pi::config::fragment { 'foo':
+  content => "hdmi_safe=1\n",
+}
+```
+
+### hiera
+
+```yaml
+pi::config::reboot: false
+pi::config::fragments:
+  dtoverlay=pps-gpio,gpiopin=4':
+    order: 99
+  dtparam=i2c_arm=on:
+    order: 1
+  dtparam=spi=on: {}
+  'serial port':
+    content: |
+      enable_uart=1
+      init_uart_baud=9600
+  disable_overscan=1:  {}
+  dtparam=audio=on:
+    order: 1
+  hdmi_mode=1:
+    order: 99
+  foo:
+    content: "hdmi_safe=1\n"
+```

examples/cmdline.pp

@@ -0,0 +1 @@
+include pi::cmdline

examples/cmdline_parameter.pp

@@ -0,0 +1,7 @@
+class { 'pi::cmdline':
+  reboot => false,  # reboots are problematic for acceptance testing
+}
+
+pi::cmdline::parameter { '8250.nr_uarts=0': }
+pi::cmdline::parameter { 'coherent_pool=1M': }
+pi::cmdline::parameter { 'snd_bcm2835.enable_headphones=0': }

examples/config.pp

@@ -0,0 +1 @@
+include pi::config

examples/config_fragment.pp

@@ -0,0 +1,14 @@
+class { 'pi::config':
+  reboot => false,  # reboots are problematic for acceptance testing
+}
+
+pi::config::fragment { 'disable_overscan=1': }
+pi::config::fragment { 'dtparam=audio=on':
+  order => 1,
+}
+pi::config::fragment { 'hdmi_mode=1':
+  order => 99,
+}
+pi::config::fragment { 'foo':
+  content => "hdmi_safe=1\n",
+}

examples/fragments.pp

@@ -0,0 +1,20 @@
+class { 'pi::config':
+  reboot    => false,  # reboots are problematic for acceptance testing
+  fragments => {
+    'dtoverlay=pps-gpio,gpiopin=4' => {
+      'order' => 99,
+    },
+    'dtparam=i2c_arm=on'           => {
+      'order' => 1,
+    },
+    'dtparam=spi=on'               => {},
+    'serial port'                  => {
+      # lint:ignore:strict_indent
+      'content' => @("CONTENT"),
+        enable_uart=1
+        init_uart_baud=9600
+        | CONTENT
+      # lint:endignore
+    },
+  },
+}

examples/parameters.pp

@@ -0,0 +1,8 @@
+class { 'pi::cmdline':
+  reboot     => false,  # reboots are problematic for acceptance testing
+  parameters => {
+    'coherent_pool=1M'     => {},
+    'bcm2708_fb.fbwidth=0' => {},
+    'bcm2708_fb.fbswap=1'  => {},
+  },
+}

files/boot_cmdline.aug

@@ -0,0 +1,14 @@
+(* /boot/cmdline.txt module for Augeas *)
+
+module Boot_Cmdline =
+  autoload xfm
+
+  let word = /[^ \n\t]+/
+  let cmdline = [ seq "cmdline" . Util.indent .
+    [ label "parameter" . store  word ] .
+  	[ label "parameter" . Sep.space . store word ]*
+  . Util.eol ]
+
+  let lns = cmdline
+
+  let xfm = transform lns (incl "/boot/cmdline.txt")

manifests/cmdline.pp

@@ -0,0 +1,31 @@
+#
+# @summary Manages /boot/cmdline.txt parameters.
+#
+# @param parameters
+#  A hash of pi::cmdline::parameter resources to create.
+#
+# @param reboot
+#   Whether or not to force a reboot when `/boot/cmdline.txt` parameters change.
+#
+class pi::cmdline (
+  Hash[String[1], Hash] $parameters = {},
+  Boolean $reboot = true,
+) {
+  augeas::lens { 'boot_cmdline':
+    lens_content => file("${module_name}/boot_cmdline.aug"),
+  }
+
+  $parameters.each | String $name, Hash $conf | {
+    pi::cmdline::parameter { $name:
+      * => $conf,
+    }
+  }
+
+  if ($reboot) {
+    reboot { '/boot/cmdline.txt':
+      apply   => finished,
+      message => 'Rebooting to apply /boot/config.txt changes',
+      when    => refreshed,
+    }
+  }
+}

manifests/cmdline/parameter.pp

@@ -0,0 +1,34 @@
+# @summary
+#  Manage a single /boot/cmdline.txt kernel parameter
+#
+# @param parameter
+#   The kernel parameter to manage. E.g. 8250.nr_uarts=1
+#
+#   Note that the management of parameters is not very intelligent.
+#   8250.nr_uarts=1 and 8250.nr_uarts=2 would be treated as two different
+#   parameters.
+#
+define pi::cmdline::parameter (
+  Optional[String[1]] $parameter = undef,
+) {
+  include pi::cmdline
+
+  $_real_parameter = $parameter ? {
+    undef => $name,
+    default => $parameter,
+  }
+
+  augeas { $name:
+    context => '/files/boot/cmdline.txt/1',
+    lens    => 'Boot_Cmdline.lns',
+    incl    => '/boot/cmdline.txt',
+    changes => [
+      "set parameter[. = '${_real_parameter}'] '${_real_parameter}'",
+    ],
+    require => Augeas::Lens['boot_cmdline'],
+  }
+
+  if Class['pi::cmdline']['reboot'] {
+    Augeas[$name] ~> Reboot['/boot/cmdline.txt']
+  }
+}

manifests/config.pp

@@ -0,0 +1,33 @@
+# @summary
+#   Manages `/boot/config.txt`
+#
+# @param fragments
+#  A hash of profile::pi::config::fragments to be concatenated into
+#  `/boot/config.txt`.
+#
+# @param reboot
+#   Whether or not to force a reboot when `/boot/config.txt` changes.
+#
+class pi::config (
+  Hash[String[1], Hash] $fragments = {},
+  Boolean $reboot = true,
+) {
+  concat { '/boot/config.txt':
+    ensure => present,
+    mode   => '0755',  # this is the default, +x seems odd
+  }
+
+  $fragments.each | String $name, Hash $conf | {
+    pi::config::fragment { $name:
+      * => $conf,
+    }
+  }
+
+  if ($reboot) {
+    reboot { '/boot/config.txt':
+      apply   => finished,
+      message => 'Rebooting to apply /boot/config.txt changes',
+      when    => refreshed,
+    }
+  }
+}

manifests/config/fragment.pp

@@ -0,0 +1,30 @@
+# @summary
+#  Create a /boot/config.txt fragment
+#
+# @param content
+#   /boot/config.txt configuration fragment
+#
+# @param order
+#   Order of the fragment within /boot/config.txt
+#
+define pi::config::fragment (
+  Optional[String[1]] $content = undef,
+  Integer[1] $order = 50,
+) {
+  include pi::config
+
+  $_real_content = $content ? {
+    undef => "${name}\n",
+    default => $content,
+  }
+
+  concat::fragment { $name:
+    target  => '/boot/config.txt',
+    content => $_real_content,
+    order   => $order,
+  }
+
+  if Class['pi::config']['reboot'] {
+    Concat::Fragment[$name] ~> Reboot['/boot/config.txt']
+  }
+}

metadata.json

@@ -9,6 +9,14 @@
     {
       "name": "camptocamp/augeas",
       "version_requirement": ">= 1.0.0 < 2.0.0"
+    },
+    {
+      "name": "puppetlabs/reboot",
+      "version_requirement": ">= 5.0.0 < 6.0.0"
+    },
+    {
+      "name": "puppetlabs/concat",
+      "version_requirement": ">= 9.0.0 < 10.0.0"
     }
   ],
   "operatingsystem_support": [
@@ -31,5 +39,18 @@
       "name": "puppet",
       "version_requirement": ">= 7.0.0 < 9.0.0"
     }
+  ],
+  "tags": [
+    "pi",
+    "rpi",
+    "raspberry",
+    "raspberry pi",
+    "banana pi",
+    "orange pi",
+    "/boot/config.txt",
+    "config.txt",
+    "/boot/cmdline.txt",
+    "cmdline.txt",
+    "raspbian"
   ]
 }

spec/acceptance/cmdline/parameter_spec.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require 'spec_helper_acceptance'
+
+describe 'pi::cmdline::parameter define' do
+  context 'without any parameters' do
+    include_context 'cmdline.txt test setup'
+    include_examples 'the example', 'cmdline_parameter.pp'
+
+    describe file('/boot/cmdline.txt') do
+      it { is_expected.to be_file }
+
+      %w[
+        8250.nr_uarts=0
+        coherent_pool=1M
+        snd_bcm2835.enable_headphones=0
+      ].each do |param|
+        its(:content) { is_expected.to match param }
+      end
+    end
+  end
+end