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|
|
<li class="md-nav__item">
|
|
<a href="../cli/keybindings/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Keybindings
|
|
|
|
|
|
|
|
</span>
|
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|
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</a>
|
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</li>
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<li class="md-nav__item">
|
|
<a href="../cli/netcalc/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Network Calculator
|
|
|
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|
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</span>
|
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</a>
|
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</li>
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<li class="md-nav__item">
|
|
<a href="../cli/tcpdump/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Network Monitoring
|
|
|
|
|
|
|
|
</span>
|
|
|
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|
|
|
|
</a>
|
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</li>
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|
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|
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<li class="md-nav__item">
|
|
<a href="../cli/quick/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Quickstart Guide
|
|
|
|
|
|
|
|
</span>
|
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|
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</a>
|
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</li>
|
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|
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|
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|
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|
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<li class="md-nav__item">
|
|
<a href="../cli/text-editor/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Text Editor
|
|
|
|
|
|
|
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</span>
|
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|
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</a>
|
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</li>
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|
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<li class="md-nav__item">
|
|
<a href="../cli/upgrade/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Upgrading
|
|
|
|
|
|
|
|
</span>
|
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|
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|
|
|
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</a>
|
|
</li>
|
|
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|
|
|
|
|
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</ul>
|
|
</nav>
|
|
|
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</li>
|
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|
|
|
|
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|
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|
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|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../container/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Docker Containers
|
|
|
|
|
|
|
|
</span>
|
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|
|
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</a>
|
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</li>
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|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4">
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_4" id="__nav_4_label" tabindex="0">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Networking
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_4_label" aria-expanded="false">
|
|
<label class="md-nav__title" for="__nav_4">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
|
|
|
Networking
|
|
|
|
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../networking/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Overview
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../iface/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Common Settings
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../bridging/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Bridging
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
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|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../lag/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Link Aggregation
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../ethernet/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Ethernet Interfaces
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../ip/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
IP Addressing
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../routing/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Routing
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../firewall/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Firewall Configuration
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../qos/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Quality of Service
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../eth-counters/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
RMON Counters
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../tunnels/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Tunneling (L2/L3)
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_4_12">
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_4_12" id="__nav_4_12_label" tabindex="0">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
VPN Tunnels
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="2" aria-labelledby="__nav_4_12_label" aria-expanded="false">
|
|
<label class="md-nav__title" for="__nav_4_12">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
|
|
|
VPN Tunnels
|
|
|
|
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../vpn/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Overview
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../vpn-wireguard/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
WireGuard
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../wifi/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Wireless LAN (WiFi)
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_5">
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_5" id="__nav_5_label" tabindex="0">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Services
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_5_label" aria-expanded="false">
|
|
<label class="md-nav__title" for="__nav_5">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
|
|
|
Services
|
|
|
|
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../discovery/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Device Discovery
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../dhcp/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
DHCP Server
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item">
|
|
<a href="../ntp/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
NTP Server
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
|
|
|
|
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
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|
|
|
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|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<li class="md-nav__item md-nav__item--active md-nav__item--nested">
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_6" checked>
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_6" id="__nav_6_label" tabindex="0">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
System
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_6_label" aria-expanded="true">
|
|
<label class="md-nav__title" for="__nav_6">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
|
|
|
System
|
|
|
|
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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<li class="md-nav__item md-nav__item--active">
|
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<input class="md-nav__toggle md-toggle" type="checkbox" id="__toc">
|
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|
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<label class="md-nav__link md-nav__link--active" for="__toc">
|
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|
|
<span class="md-ellipsis">
|
|
|
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|
|
Boot Procedure
|
|
|
|
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|
|
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</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<a href="./" class="md-nav__link md-nav__link--active">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
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|
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|
Boot Procedure
|
|
|
|
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|
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</span>
|
|
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|
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</a>
|
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|
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<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
|
|
|
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|
|
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|
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|
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|
|
<label class="md-nav__title" for="__toc">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
Table of contents
|
|
</label>
|
|
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#bootloader" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Bootloader
|
|
|
|
</span>
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Bootloader">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#configuration" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Configuration
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#u-boot" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
U-Boot
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#grub" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
GRUB
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
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</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#system-boot" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
System Boot
|
|
|
|
</span>
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="System Boot">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#failure-modes" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Failure Modes
|
|
|
|
</span>
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Failure Modes">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#vpd-fail" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
VPD Fail
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#broken-startup-config" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Broken startup-config
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#system-upgrade" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
System Upgrade
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#image-formats" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Image Formats
|
|
|
|
</span>
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Image Formats">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#squashfs-image" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
SquashFS Image
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#fit-framed-squash-image" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
FIT Framed Squash Image
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#rauc-upgrade-bundle" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
RAUC Upgrade Bundle
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#disk-image" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
Disk Image
|
|
|
|
</span>
|
|
</a>
|
|
|
|
<nav class="md-nav" aria-label="Disk Image">
|
|
<ul class="md-nav__list">
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#boot-bootloader" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
boot - Bootloader
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#aux-auxiliary-data" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
aux - Auxiliary Data
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#primarysecondary-root-filesystems" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
primary/secondary - Root Filesystems
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#cfg-configuration-data" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
cfg - Configuration Data
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
<li class="md-nav__item">
|
|
<a href="#var-variable-data" class="md-nav__link">
|
|
<span class="md-ellipsis">
|
|
|
|
var - Variable Data
|
|
|
|
</span>
|
|
</a>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
</nav>
|
|
|
|
</li>
|
|
|
|
</ul>
|
|
|
|
</nav>
|
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|
|
</li>
|
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|
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|
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|
|
<li class="md-nav__item">
|
|
<a href="../system/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Configuration
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
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|
|
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|
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|
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|
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<li class="md-nav__item">
|
|
<a href="../nacm/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Access Control (NACM)
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
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</li>
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|
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<li class="md-nav__item">
|
|
<a href="../hardware/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Hardware Info & Status
|
|
|
|
|
|
|
|
</span>
|
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|
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|
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|
|
</a>
|
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</li>
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<li class="md-nav__item">
|
|
<a href="../management/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Management
|
|
|
|
|
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|
|
</span>
|
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|
|
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|
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</a>
|
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</li>
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|
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<li class="md-nav__item">
|
|
<a href="../keystore/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Keystore
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
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|
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<li class="md-nav__item">
|
|
<a href="../syslog/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Syslog Support
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
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</li>
|
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<li class="md-nav__item">
|
|
<a href="../support/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Support Data
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
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|
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|
|
<li class="md-nav__item">
|
|
<a href="../upgrade/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Upgrade
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
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|
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|
|
|
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</ul>
|
|
</nav>
|
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</li>
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|
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<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
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|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_7">
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_7" id="__nav_7_label" tabindex="0">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Scripting
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_7_label" aria-expanded="false">
|
|
<label class="md-nav__title" for="__nav_7">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
|
|
|
Scripting
|
|
|
|
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
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|
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|
|
<li class="md-nav__item">
|
|
<a href="../scripting/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Introduction
|
|
|
|
|
|
|
|
</span>
|
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</a>
|
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</li>
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<li class="md-nav__item">
|
|
<a href="../scripting-sysrepocfg/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Legacy Scripting
|
|
|
|
|
|
|
|
</span>
|
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|
|
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|
|
</a>
|
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</li>
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<li class="md-nav__item">
|
|
<a href="../scripting-netconf/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
NETCONF Scripting
|
|
|
|
|
|
|
|
</span>
|
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|
|
|
|
</a>
|
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</li>
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|
<li class="md-nav__item">
|
|
<a href="../scripting-restconf/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
RESTCONF Scripting
|
|
|
|
|
|
|
|
</span>
|
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|
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|
|
|
|
</a>
|
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</li>
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|
<li class="md-nav__item">
|
|
<a href="../scripting-prod/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Production Testing
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
</a>
|
|
</li>
|
|
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|
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|
|
|
|
</ul>
|
|
</nav>
|
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</li>
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|
|
<li class="md-nav__item md-nav__item--nested">
|
|
|
|
|
|
|
|
<input class="md-nav__toggle md-toggle " type="checkbox" id="__nav_8">
|
|
|
|
|
|
<label class="md-nav__link" for="__nav_8" id="__nav_8_label" tabindex="0">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Developer's Corner
|
|
|
|
|
|
|
|
</span>
|
|
|
|
|
|
|
|
<span class="md-nav__icon md-icon"></span>
|
|
</label>
|
|
|
|
<nav class="md-nav" data-md-level="1" aria-labelledby="__nav_8_label" aria-expanded="false">
|
|
<label class="md-nav__title" for="__nav_8">
|
|
<span class="md-nav__icon md-icon"></span>
|
|
|
|
|
|
Developer's Corner
|
|
|
|
|
|
</label>
|
|
<ul class="md-nav__list" data-md-scrollfix>
|
|
|
|
|
|
|
|
|
|
|
|
|
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|
|
<li class="md-nav__item">
|
|
<a href="../branding/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Branding & Releases
|
|
|
|
|
|
|
|
</span>
|
|
|
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|
|
|
|
</a>
|
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</li>
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<li class="md-nav__item">
|
|
<a href="../developers-guide/" class="md-nav__link">
|
|
|
|
|
|
|
|
<span class="md-ellipsis">
|
|
|
|
|
|
Developer's Guide
|
|
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Developing with Buildroot
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Netboot HowTo
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Broken startup-config
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FIT Framed Squash Image
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RAUC Upgrade Bundle
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Introduction
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System
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|
|
<h1 id="boot-procedure">Boot Procedure<a class="headerlink" href="#boot-procedure" title="Permanent link">¶</a></h1>
|
|
<p>Systems running Infix will typically boot in multiple phases, forming
|
|
a boot chain. Each link in the chain has three main responsibilities:</p>
|
|
<ol>
|
|
<li>Ensuring the integrity of the next link before passing control to
|
|
it. This avoids silent failures stemming from data corruption.</li>
|
|
<li>Ensuring the authenticity of the next link before passing control
|
|
to it, commonly referred to as <em>Secure Boot</em>. This protects against
|
|
malicious attempts to modify a system's firmware.</li>
|
|
<li>Preparing the system state according to the requirements of the
|
|
next link. E.g. the Linux kernel requires the system's RAM to be
|
|
operational.</li>
|
|
</ol>
|
|
<p>A typical chain consists of four stages:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a> .---------.
|
|
<a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a> | ROM >---. Determine the location of and load the SPL
|
|
<a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a> '---------' |
|
|
<a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a>.-----------------'
|
|
<a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a>| .---------.
|
|
<a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a>'---> SPL >---. Perform DDR training and load the TPL
|
|
<a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a> '---------' |
|
|
<a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a>.-----------------'
|
|
<a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a>| .---------.
|
|
<a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a>'---> TPL >---. Load Linux kernel, device tree, and root filesystem
|
|
<a id="__codelineno-0-11" name="__codelineno-0-11" href="#__codelineno-0-11"></a> '---------' |
|
|
<a id="__codelineno-0-12" name="__codelineno-0-12" href="#__codelineno-0-12"></a>.-----------------'
|
|
<a id="__codelineno-0-13" name="__codelineno-0-13" href="#__codelineno-0-13"></a>| .---------.
|
|
<a id="__codelineno-0-14" name="__codelineno-0-14" href="#__codelineno-0-14"></a>'---> Infix | Get down to business
|
|
<a id="__codelineno-0-15" name="__codelineno-0-15" href="#__codelineno-0-15"></a> '---------'
|
|
</code></pre></div>
|
|
<p>After a reset, hardware will pass control to a program (<em>ROM</em>) which
|
|
is almost always programmed into the SoC by the vendor. This program
|
|
will determine the location of the <em>Secondary Program Loader</em> (<em>SPL</em>),
|
|
typically by reading a set of <em>Sample at Reset</em> (SaR) pins.</p>
|
|
<p>The <em>SPL</em> is sometimes provided by the SoC vendor in binary form, and
|
|
is sometimes built as a part of the <em>Tertiary Program Loader</em> (<em>TPL</em>)
|
|
build. Its main responsibility is usually to set up the system's
|
|
memory controller and perform DDR training, if required, before
|
|
loading the <em>TPL</em>.</p>
|
|
<p>Commonly referred to as the system's <em>bootloader</em>, the <em>TPL</em> is
|
|
responsible for preparing the execution environment required by the
|
|
Linux kernel.</p>
|
|
<p>This document's focus is to describe the final two phases of the boot
|
|
chain, as the initial phases are very hardware dependent, better
|
|
described by existing documentation provided by the SoC vendor.</p>
|
|
<h2 id="bootloader">Bootloader<a class="headerlink" href="#bootloader" title="Permanent link">¶</a></h2>
|
|
<h3 id="configuration">Configuration<a class="headerlink" href="#configuration" title="Permanent link">¶</a></h3>
|
|
<p>To mitigate the risk of a malicious user being able to circumvent the
|
|
bootloader's validation procedure, user configuration is kept to a
|
|
minimum. Two settings are available:</p>
|
|
<p><strong>Boot order</strong>: Since Infix maintains two copies of its software image,
|
|
and as some bootloaders support <a href="../netboot/">netbooting</a>, the order in which boot
|
|
sources are considered can be configured. To select the active
|
|
source, use <a href="https://rauc.io">RAUC</a>:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a>root@example:~# rauc status mark-active <slot>
|
|
<a id="__codelineno-1-2" name="__codelineno-1-2" href="#__codelineno-1-2"></a>...
|
|
</code></pre></div>
|
|
<p>Where <code><slot></code> is one of:</p>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th><strong><code><slot></code></strong></th>
|
|
<th><strong>Source</strong></th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><code>rootfs.0</code></td>
|
|
<td>Primary partition</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>rootfs.1</code></td>
|
|
<td>Secondary partition</td>
|
|
</tr>
|
|
<tr>
|
|
<td><code>net.0</code></td>
|
|
<td>Netboot (where supported)</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p><strong>Debug</strong>: By default, the kernel will only output errors to the
|
|
console during boot. Optionally, this can be altered such that all
|
|
enabled messages are logged.</p>
|
|
<p>On systems using <em>U-Boot</em>, this can be enabled by running <code>fw_setenv
|
|
DEBUG 1</code>. To restore the default behavior, run <code>fw_setenv DEBUG</code>.</p>
|
|
<p>On systems running <em>GRUB</em>, this can be enabled by running:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a>root@example:~# grub-editenv /mnt/aux/grub/grubenv set DEBUG=1
|
|
</code></pre></div>
|
|
<p>To restore the default behavior, run:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a>root@example:~# grub-editenv /mnt/aux/grub/grubenv unset DEBUG
|
|
</code></pre></div>
|
|
<h3 id="u-boot">U-Boot<a class="headerlink" href="#u-boot" title="Permanent link">¶</a></h3>
|
|
<p>Used on <em>aarch64</em> based systems. It is able to verify both the
|
|
<em>integrity</em> and <em>authenticity</em> of an Infix image. As such, it can be
|
|
used as a part of a <em>Secure Boot</em> chain, given that the preceding
|
|
links are able to do the same.</p>
|
|
<p>Supports booting Infix from a block device using the <a href="#disk-image">Disk
|
|
Image</a> layout. Currently, Virtio and MMC disks are
|
|
supported.</p>
|
|
<p>An <a href="#fit-framed-squash-image">FIT Framed Squash Image</a> can be used to
|
|
boot Infix over the network. DHCP is used to configure the network
|
|
and TFTP to transfer the image to the system's RAM.</p>
|
|
<p>Access to U-Boot's shell is disabled to prevent side-loading of
|
|
malicious software. To configure the active boot partition, refer to
|
|
the <a href="#configuration">Bootloader Configuration</a> section.</p>
|
|
<h3 id="grub">GRUB<a class="headerlink" href="#grub" title="Permanent link">¶</a></h3>
|
|
<p>Used on <em>x86_64</em> based systems. Neither the <em>integrity</em> nor the
|
|
<em>authenticity</em> of the Infix image is verified. It is only intended to
|
|
provide a way of booting a <a href="#disk-image">Disk Image</a>, such that a
|
|
standard <a href="#system-upgrade">System Upgrade</a> can be performed on
|
|
virtualized instances.</p>
|
|
<p>Access to the GRUB shell is not limited in any way, and the boot
|
|
partition can be selected interactively at boot using the arrow keys. It
|
|
is also possible to permanently configure the default partition from
|
|
Infix using the <a href="#configuration">Bootloader Configuration</a>.</p>
|
|
<h2 id="system-boot">System Boot<a class="headerlink" href="#system-boot" title="Permanent link">¶</a></h2>
|
|
<p>After the system firmware (BIOS or and <a href="./">boot loader</a> start
|
|
Linux the following happens. The various failure modes, e.g., missing
|
|
password in VPD, are detailed later in this section.</p>
|
|
<p><a class="glightbox" data-type="image" data-width="100%" data-height="auto" href="../img/fail-secure.svg" data-desc-position="bottom"><img alt="System boot flowchart" src="../img/fail-secure.svg"></a></p>
|
|
<ol>
|
|
<li>Before mounting <code>/cfg</code> and <code>/var</code> partitions, hosting read-writable
|
|
data like <code>startup-config</code> and container images, the system first
|
|
checks if a factory reset has been requested by the user, if so it
|
|
wipes the contents of these partitions</li>
|
|
<li>Linux boots with a device tree which is used for detecting generic
|
|
make and model of the device, e.g., number of interfaces. It may
|
|
also reference an EEPROM with <a href="../vpd/">Vital Product Data</a>. That is
|
|
where the base MAC address and per-device password hash is stored.
|
|
(Generic builds use the same MAC address and password)</li>
|
|
<li>On every boot the system's <code>factory-config</code> and <code>failure-config</code> are
|
|
generated from the YANG<sup id="fnref:2"><a class="footnote-ref" href="#fn:2">2</a></sup> models of the current firmware version.
|
|
This ensures that a factory reset device can always boot, and that
|
|
there is a working fail safe, or rather <em>fail secure</em>, mode</li>
|
|
<li>On first power-on, and after a factory reset, the system does not
|
|
have a <code>startup-config</code>, in which case <code>factory-config</code> is copied
|
|
to <code>startup-config</code> -- if a per-product specific version exists it
|
|
is preferred over the generated one</li>
|
|
<li>Provided the integrity of the <code>startup-config</code> is OK, a system
|
|
service loads and activates the configuration</li>
|
|
</ol>
|
|
<h3 id="failure-modes">Failure Modes<a class="headerlink" href="#failure-modes" title="Permanent link">¶</a></h3>
|
|
<p>So, what happens if any of the steps above fail?</p>
|
|
<h4 id="vpd-fail">VPD Fail<a class="headerlink" href="#vpd-fail" title="Permanent link">¶</a></h4>
|
|
<p>The per-device password cannot be read, or is corrupt, so the system
|
|
<code>factory-config</code> and <code>failure-config</code> are not generated:</p>
|
|
<ol>
|
|
<li>First boot, or after factory reset: <code>startup-config</code> cannot be
|
|
created or loaded, and <code>failure-config</code> cannot be loaded. The
|
|
system ends up in an unrecoverable state, i.e., <strong>RMA<sup id="fnref:3"><a class="footnote-ref" href="#fn:3">3</a></sup> Mode</strong></li>
|
|
<li>The system has booted (at least) once with correct VPD and password
|
|
and already has a <code>startup-config</code>. Provided the <code>startup-config</code>
|
|
is OK (see below), it is loaded and system boots successfully</li>
|
|
</ol>
|
|
<p>In both cases, external factory reset modes/button will not help, and
|
|
in the second case will cause the device to fail on the next boot.</p>
|
|
<div class="admonition note">
|
|
<p class="admonition-title">Note</p>
|
|
<p>The second case does not yet have any warning or event that can be
|
|
detected from the outside. This is planned for a later release.</p>
|
|
</div>
|
|
<h4 id="broken-startup-config">Broken startup-config<a class="headerlink" href="#broken-startup-config" title="Permanent link">¶</a></h4>
|
|
<p>If loading <code>startup-config</code> fails for some reason, e.g., invalid JSON
|
|
syntax, failed validation against the system's YANG model, or a bug in
|
|
the system's <code>confd</code> service, the <em>Fail Secure Mode</em> is triggered and
|
|
<code>failure-config</code> is loaded (unless VPD Failure, see above).</p>
|
|
<div class="admonition tip">
|
|
<p class="admonition-title">Tip</p>
|
|
<p>Please see the <a href="../branding/">Branding & Releases</a> document for how to
|
|
provide per-product <code>failure-config</code>, or <code>factory-config</code> to suit your
|
|
product's preferences.</p>
|
|
</div>
|
|
<p><em>Fail Secure Mode</em> is a fail-safe mode provided for debugging the
|
|
system. The default<sup id="fnref:4"><a class="footnote-ref" href="#fn:4">4</a></sup> creates a setup of isolated interfaces with
|
|
communication only to the management CPU, SSH and console login using
|
|
the device's factory reset password, IP connectivity only using IPv6
|
|
link-local, and device discovery protocols: LLDP, mDNS-SD. The login
|
|
and shell prompt are set to <code>failure-c0-ff-ee</code>, the last three octets of
|
|
the device's base MAC address.</p>
|
|
<h2 id="system-upgrade">System Upgrade<a class="headerlink" href="#system-upgrade" title="Permanent link">¶</a></h2>
|
|
<p>Much of the minutiae of software upgrades is delegated to <a href="https://rauc.io">RAUC</a>,
|
|
which offers lots of benefits out-of-the-box:</p>
|
|
<ul>
|
|
<li>Upgrade Bundles are always signed, such that their authenticity can
|
|
be verified by the running operating system, before the new one is
|
|
installed.</li>
|
|
<li>The bureaucracy of interfacing with different bootloaders, manage
|
|
the boot order, is a simple matter of providing a compatible
|
|
configuration.</li>
|
|
<li>Updates can be sourced from the local filesystem (including external
|
|
media like USB sticks or SD-cards) and from remote servers using FTP
|
|
or HTTP(S).</li>
|
|
</ul>
|
|
<p>To initiate a system upgrade from the shell<sup id="fnref:1"><a class="footnote-ref" href="#fn:1">1</a></sup>, run:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a>root@example:~# rauc install <file|url>
|
|
<a id="__codelineno-4-2" name="__codelineno-4-2" href="#__codelineno-4-2"></a>...
|
|
</code></pre></div>
|
|
<p>Where the file or URL points to a <a href="#rauc-upgrade-bundle">RAUC Upgrade Bundle</a>.</p>
|
|
<p>This will upgrade the partition not currently running. After a
|
|
successful upgrade is completed, you can reboot your system, which
|
|
will then boot from the newly installed image. Since the partition
|
|
from which you were originally running is now inactive, running the
|
|
same upgrade command again will bring both partitions into sync.</p>
|
|
<h2 id="image-formats">Image Formats<a class="headerlink" href="#image-formats" title="Permanent link">¶</a></h2>
|
|
<h3 id="squashfs-image">SquashFS Image<a class="headerlink" href="#squashfs-image" title="Permanent link">¶</a></h3>
|
|
<p><strong>Canonical Name</strong>: <code>rootfs.squashfs</code></p>
|
|
<p>The central read-only filesystem image containing Infix's Linux
|
|
kernel, device trees, and root filesystem. All other images bundle
|
|
this image, or is dependent on it, in one way or another.</p>
|
|
<p>On its own, it can be used as an <a href="https://docs.kernel.org/admin-guide/initrd.html">initrd</a> to efficiently boot a
|
|
virtual instance of Infix.</p>
|
|
<h3 id="fit-framed-squash-image">FIT Framed Squash Image<a class="headerlink" href="#fit-framed-squash-image" title="Permanent link">¶</a></h3>
|
|
<p><strong>Canonical Name</strong>: <code>rootfs.itb</code></p>
|
|
<p>As the name suggests, this is essentially the <a href="#squashfs-image">Squash FS
|
|
Image</a> with a <em>Flattened Image Tree</em> (<a href="https://u-boot.readthedocs.io/en/latest/usage/fit.html">FIT</a>)
|
|
header. Being a native format to U-Boot, using this framing allows us
|
|
to verify the integrity and authenticity of the SquashFS image using
|
|
standard U-Boot primitives.</p>
|
|
<p>In contrast to most FIT images, the kernel and device trees are not
|
|
stored as separate binaries in the image tree. Instead, Infix follows
|
|
the standard Linux layout where the kernel and related files are
|
|
stored in the <code>/boot</code> directory of the filesystem.</p>
|
|
<p>On disk, this image is then stored broken up into its two components;
|
|
the <em>FIT header</em> (<code>rootfs.itbh</code>) and the SquashFS image. The header
|
|
is stored on the <a href="#aux-auxiliary-data">Auxiliary Data</a> partition of
|
|
the <a href="#disk-image">Disk Image</a>, while the SquashFS image is stored in
|
|
one of the <a href="#primarysecondary-root-filesystems">Root Filesystem</a>
|
|
partitions.</p>
|
|
<p>When the system boots, U-Boot will concatenate the two parts to
|
|
validate the SquashFS's contents. This path was chosen because:</p>
|
|
<ul>
|
|
<li>
|
|
<p>Having a separate raw SquashFS means Linux can directly mount it as
|
|
the root filesystem.</p>
|
|
</li>
|
|
<li>
|
|
<p>It decouples Infix from U-Boot. If a better way of validating our
|
|
image is introduced, we can switch to it without major changes to
|
|
Infix's boot process, as we can still use a regular SquashFS as the
|
|
root filesystem.</p>
|
|
</li>
|
|
<li>
|
|
<p>It lets us use standard interfaces to boot Linux, like SYSLINUX. It
|
|
also plays well with traditional bootloaders, like GRUB.</p>
|
|
</li>
|
|
</ul>
|
|
<p>In its full form, it can be used to netboot Infix, as it contains all
|
|
the information needed by U-Boot in a single file.</p>
|
|
<h3 id="rauc-upgrade-bundle">RAUC Upgrade Bundle<a class="headerlink" href="#rauc-upgrade-bundle" title="Permanent link">¶</a></h3>
|
|
<p><strong>Canonical Name</strong>: <code>infix-${ARCH}.pkg</code></p>
|
|
<p>Itself a SquashFS image, this bundle (sometimes referred to package)
|
|
contains the Infix <a href="#squashfs-image">SquashFS Image</a> along with the
|
|
header of the <a href="#fit-framed-squash-image">FIT Framed Squash Image</a>, and
|
|
some supporting files to let <a href="https://rauc.io">RAUC</a> know how install it on the target
|
|
system.</p>
|
|
<p>When performing a <a href="#system-upgrade">System Upgrade</a>, this is the format
|
|
to use.</p>
|
|
<h3 id="disk-image">Disk Image<a class="headerlink" href="#disk-image" title="Permanent link">¶</a></h3>
|
|
<p><strong>Canonical Name</strong>: <code>disk.img</code></p>
|
|
<p>Infix runs from a block device (e.g. eMMC or virtio disk) with the
|
|
following layout. The disk is expected to use the GPT partitioning
|
|
scheme. Partitions marked with an asterisk are optional.</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a>.-----------.
|
|
<a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a>| GPT Table |
|
|
<a id="__codelineno-5-3" name="__codelineno-5-3" href="#__codelineno-5-3"></a>:-----------:
|
|
<a id="__codelineno-5-4" name="__codelineno-5-4" href="#__codelineno-5-4"></a>| boot* |
|
|
<a id="__codelineno-5-5" name="__codelineno-5-5" href="#__codelineno-5-5"></a>:-----------:
|
|
<a id="__codelineno-5-6" name="__codelineno-5-6" href="#__codelineno-5-6"></a>| aux |
|
|
<a id="__codelineno-5-7" name="__codelineno-5-7" href="#__codelineno-5-7"></a>:-----------:
|
|
<a id="__codelineno-5-8" name="__codelineno-5-8" href="#__codelineno-5-8"></a>| |
|
|
<a id="__codelineno-5-9" name="__codelineno-5-9" href="#__codelineno-5-9"></a>| primary |
|
|
<a id="__codelineno-5-10" name="__codelineno-5-10" href="#__codelineno-5-10"></a>| |
|
|
<a id="__codelineno-5-11" name="__codelineno-5-11" href="#__codelineno-5-11"></a>:-----------:
|
|
<a id="__codelineno-5-12" name="__codelineno-5-12" href="#__codelineno-5-12"></a>| |
|
|
<a id="__codelineno-5-13" name="__codelineno-5-13" href="#__codelineno-5-13"></a>| secondary |
|
|
<a id="__codelineno-5-14" name="__codelineno-5-14" href="#__codelineno-5-14"></a>| |
|
|
<a id="__codelineno-5-15" name="__codelineno-5-15" href="#__codelineno-5-15"></a>:-----------:
|
|
<a id="__codelineno-5-16" name="__codelineno-5-16" href="#__codelineno-5-16"></a>| cfg |
|
|
<a id="__codelineno-5-17" name="__codelineno-5-17" href="#__codelineno-5-17"></a>:-----------:
|
|
<a id="__codelineno-5-18" name="__codelineno-5-18" href="#__codelineno-5-18"></a>| |
|
|
<a id="__codelineno-5-19" name="__codelineno-5-19" href="#__codelineno-5-19"></a>| var* |
|
|
<a id="__codelineno-5-20" name="__codelineno-5-20" href="#__codelineno-5-20"></a>| |
|
|
<a id="__codelineno-5-21" name="__codelineno-5-21" href="#__codelineno-5-21"></a>'-----------'
|
|
</code></pre></div>
|
|
<h4 id="boot-bootloader"><code>boot</code> - Bootloader<a class="headerlink" href="#boot-bootloader" title="Permanent link">¶</a></h4>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th><strong>Parameter</strong></th>
|
|
<th><strong>Value</strong></th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>Required</td>
|
|
<td>No</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Size</td>
|
|
<td>4 MiB</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Format</td>
|
|
<td>Raw binary, as dictated by the hardware</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>Optional partition containing the system's bootloader. May also reside
|
|
in a separate storage device, e.g. a serial FLASH.</p>
|
|
<p>On x86_64, this partition holds the EFI system partition, containing
|
|
the GRUB bootloader.</p>
|
|
<h4 id="aux-auxiliary-data"><code>aux</code> - Auxiliary Data<a class="headerlink" href="#aux-auxiliary-data" title="Permanent link">¶</a></h4>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th><strong>Parameter</strong></th>
|
|
<th><strong>Value</strong></th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>Required</td>
|
|
<td>Yes</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Size</td>
|
|
<td>4 MiB</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Format</td>
|
|
<td>EXT4 filesystem</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>Holds information that is shared between Infix and its bootloader,
|
|
such as image signatures required to validate the chain of trust,
|
|
bootloader configuration etc.</p>
|
|
<p>Typical layout when using U-Boot bootloader:</p>
|
|
<div class="highlight"><pre><span></span><code><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a>/
|
|
<a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a>├ primary.itbh
|
|
<a id="__codelineno-6-3" name="__codelineno-6-3" href="#__codelineno-6-3"></a>├ secondary.itbh
|
|
<a id="__codelineno-6-4" name="__codelineno-6-4" href="#__codelineno-6-4"></a>└ uboot.env
|
|
</code></pre></div>
|
|
<p>During boot, an ITB header along with the corresponding root
|
|
filesystem image are concatenated in memory, by U-Boot, to form a
|
|
valid FIT image that is used to verify its integrity and origin before
|
|
any files are extracted from it.</p>
|
|
<p>Note that the bootloader's primary environment is bundled in the
|
|
binary - <code>uboot.env</code> is only used to import a few settings that is
|
|
required to configure the boot order.</p>
|
|
<h4 id="primarysecondary-root-filesystems"><code>primary</code>/<code>secondary</code> - Root Filesystems<a class="headerlink" href="#primarysecondary-root-filesystems" title="Permanent link">¶</a></h4>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th><strong>Parameter</strong></th>
|
|
<th><strong>Value</strong></th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>Required</td>
|
|
<td>Yes</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Size</td>
|
|
<td>>= 256 MiB</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Format</td>
|
|
<td>Squash filesystem</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>Holds the <a href="#squashfs-image">SquashFS Image</a>. Two copies exist so that
|
|
an incomplete upgrade does not brick the system, and to allow fast
|
|
rollbacks when upgrading to a new version.</p>
|
|
<h4 id="cfg-configuration-data"><code>cfg</code> - Configuration Data<a class="headerlink" href="#cfg-configuration-data" title="Permanent link">¶</a></h4>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th><strong>Parameter</strong></th>
|
|
<th><strong>Value</strong></th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>Required</td>
|
|
<td>Yes</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Size</td>
|
|
<td>>= 16 MiB</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Format</td>
|
|
<td>EXT4 filesystem</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>Non-volatile storage of the system configuration and user data.
|
|
Concretely, user data is everything stored under <code>/root</code> and <code>/home</code>.</p>
|
|
<h4 id="var-variable-data"><code>var</code> - Variable Data<a class="headerlink" href="#var-variable-data" title="Permanent link">¶</a></h4>
|
|
<table>
|
|
<thead>
|
|
<tr>
|
|
<th><strong>Parameter</strong></th>
|
|
<th><strong>Value</strong></th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td>Required</td>
|
|
<td>No</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Size</td>
|
|
<td>>= 16 MiB</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Format</td>
|
|
<td>EXT4 filesystem</td>
|
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</tr>
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</tbody>
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</table>
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<p>Persistent storage for everything under <code>/var</code>. This is maintained as
|
|
a separate filesystem from the data in <code>cfg</code>, because while the system
|
|
can funtion reasonably well without a persistent <code>/var</code>, loosing
|
|
<code>/cfg</code> or <code>/etc</code> is much more difficult.</p>
|
|
<p>If <code>var</code> is not available, Infix will still persist <code>/var/lib</code> using
|
|
<code>cfg</code> as the backing storage.</p>
|
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<div class="footnote">
|
|
<hr>
|
|
<ol>
|
|
<li id="fn:1">
|
|
<p>See <a href="../upgrade/">Upgrade & Boot Order</a> for more information. <a class="footnote-backref" href="#fnref:1" title="Jump back to footnote 1 in the text">↩</a></p>
|
|
</li>
|
|
<li id="fn:2">
|
|
<p>YANG is a modeling language from IETF, replacing that used for
|
|
SNMP (MIB), used to describe the subsystems and properties of
|
|
the system. <a class="footnote-backref" href="#fnref:2" title="Jump back to footnote 2 in the text">↩</a></p>
|
|
</li>
|
|
<li id="fn:3">
|
|
<p>Return Merchandise Authorization (RMA), i.e., broken beyond repair
|
|
by end-user and eligible for return to manufacturer. <a class="footnote-backref" href="#fnref:3" title="Jump back to footnote 3 in the text">↩</a></p>
|
|
</li>
|
|
<li id="fn:4">
|
|
<p>Customer specific builds can define their own <code>failure-config</code>.
|
|
It may be the same as <code>factory-config</code>, with the hostname set to
|
|
<code>failure</code>, or a dedicated configuration that isolates interfaces, or
|
|
even disables ports, to ensure that the device does not cause any
|
|
security problems on the network. E.g., start forwarding traffic
|
|
between previously isolated VLANs. <a class="footnote-backref" href="#fnref:4" title="Jump back to footnote 4 in the text">↩</a></p>
|
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</li>
|
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</ol>
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</div>
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