# Dell ESRT Support

## Introduction

This allows enabling the BIOS setup option for UEFI capsule updates without
manually going into BIOS setup.

## GUID Generation

These device uses a hardcoded GUID of `2d47f29b-83a2-4f31-a2e8-63474f4d4c2e`.

## Vendor ID Security

The vendor ID is hardcoded to `PCI:0x1028`.

## Build Requirements

For Dell support you will need libsmbios_c version 2.4.0 or later.

* [source](https://github.com/dell/libsmbios)
* [binaries](https://github.com/dell/libsmbios/releases)

If you don't want or need this functionality you can use the
`-Dplugin_dell=false` option.

## Devices powered by the Dell Plugin

The Dell ESRT plugin allows the user to enable the UpdateCapsule functionality
at runtime. A reboot will be required and the BIOS administrator password
must not be set.

Machines that offer this functionality will display an extra device in
`fwupdmgr get-devices` output.

Example:

```text
UEFI dummy device
  Guid:                 2d47f29b-83a2-4f31-a2e8-63474f4d4c2e
  Plugin:               dell-esrt
  Flags:                internal|updatable|locked
  Version:              0
  Created:              2018-06-25
```

## External Interface Access

This plugin requires:

* read/write access to `/dev/wmi/dell-smbios` and `/sys/bus/platform/devices/dcdbas`.
* read access to `/sys/firmware/efi/esrt`.
