larson_system_rpi3

# Changelog

## 1.5.1-larson

应用Larson补丁

  * 更新依赖关系
  * 启用 `dnsmasq`
  * 在内核中启用更多的串行驱动程序。
  * 在内核中启用V4L驱动程序
  * 启用Python 2
  * 启用OpenCV2.4

## v1.5.1

* Enhancements
  * Enable configuration for the Raspberry Pi 7" touchscreen display by default.
* Updated dependencies
  * [nerves_system_br v1.5.3](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.5.3)

## v1.5.0

This release updates the Linux kernel from 4.4/4.9 to 4.14.71.

* Enhancements
  * Added Alsa utils `aplay` and `amixer` for audio support.
  * Added `espeak` a speech synthesizer for text to audio.
  * Automatically reboot if the Linux kernel panics (defaults to a 10 second
    delay before the reboot)

* Updated dependencies
  * [nerves_system_br v1.5.2](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.5.2)
  * Linux 4.14.71 with patches from the Raspberry Pi Foundation
  * Erlang 21.0.9

## v1.4.1

* Bug fixes
  * Trim Linux module list to remove warnings on OSX builds. This makes a few
    other changes to the module list to remove some difficult to use modules on
    Nerves projects.

## v1.4.0

This release contains various updates to provisioning variables and data.

**Host requirements**

Building firmware using this system requires `fwup` to be updated on your
host computer to at least `v1.2.5`. The target minimum version requirement
has not changed from `0.15.0`.

**Serial numbers**

Device serial numbers are now set using `NERVES_SERIAL_NUMBER` instead of
`SERIAL_NUMBER`. This is to reduce ambiguity on the source of the serial
by name spacing it along side other Nerves variables. The U-Boot environment
key has also changed from `serial_number` to `nerves_serial_number`. The
erlinit.config has been updated to provide backwards compatibility for setting
the hostname from the serial number by checking for `nerves_serial_number`
and falling back to `serial_number`.

**Custom provisioning**

Provisioning data is applied at the time of calling the `fwup` task `complete`.
The `complete` task is executed when writing the firmware to the target disk.
During this time, `fwup` will include the contents of a provisioning file
located at `${NERVES_SYSTEM}/images/fwup_include/provisioning.conf`. By default,
this file only sets `nerves_serial_number`. You can add additional provisioning
data by overriding the location of this file to include your own by setting
the environment variable `NERVES_PROVISIONING`. If you override this variable
you will be responsible for also setting `nerves_serial_number`.

* Updated dependencies
  * [nerves_system_br v1.4.5](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.4.5)

## v1.3.0

This release upgrades gcc from version 6.3.0 to 7.3.0. See the toolchain release
notes for more information.

* Updated dependencies
  * [nerves_system_br v1.4.1](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.4.1)
  * [nerves_toolchain_arm_unknown_linux_gnueabihf v1.1.0](https://github.com/nerves-project/toolchains/releases/tag/v1.1.0)

## v1.2.1

* Bug Fixes
  * Fix Raspberry Pi 3 B+ support by adding missing dtb file.

* Updated dependencies
  * [nerves_system_br v1.3.2](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.3.2)

## v1.2.0

This release updates Erlang to OTP 21.0

* Updated dependencies
  * [nerves_system_br v1.3.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.3.0)

## v1.1.1

This release fixes some issues and adds firmware UUID support. This support can
be used to unambiguously know what's running on a device.

* Updated dependencies
  * [nerves_system_br v1.2.2](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.2.2)

* Bug fixes
  * Empty serial numbers stored in the U-Boot environment would be used instead
    of reverting to devices IDs built into the CPU or board.
  * It wasn't possible to enable QtWebEngine (needed for kiosk apps)

## v1.1.0

This release adds official support for provisioning serial numbers to devices.
Other information can be provisioned in a similar manner. See the README.md for
details.

Buildroot was also updated to 2018.05. Be sure to review the `nerves_system_br`
link for the changes in the embedded Linux components.

* Updated dependencies
  * [nerves_system_br v1.2.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.2.0)

* New features
  * More `wpa-supplicant` features were enabled to support more WiFi use-cases

## v1.0.0

This release is nearly identical to rc.2 except with the deps bump to 1.0 and
the serial port on the GPIO pins is assigned to "dev/ttyAMA0" like all
other RPi systems.

* Updated dependencies
  * [nerves_system_br v1.0.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.0.0)
  * [nerves_toolchain v1.0.0](https://github.com/nerves-project/toolchains/releases/tag/v1.0.0)
  * [nerves v1.0.0](https://github.com/nerves-project/nerves/releases/tag/1.0.0)

## v1.0.0-rc.2

Upgraded the Linux kernel from 4.4 -> 4.9. Due to the coupling
between the Linux kernel and rpi-firmware and possibly rpi-userland, if
you have a custom system based off this, you should update your Linux
kernel as well. (see `nerves_defconfig`)

  * Enhancements
    * Support for Raspberry Pi 3 B+

  * Updated dependencies
    * [nerves_system_br v1.0.0-rc.3](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.0.0-rc.3)

## v1.0.0-rc.1

This release contains updates to Erlang and heart from `nerves_system_br` and
mostly cosmetic changes to this project. The trivial `.fw` files are no longer
created by CI scripts. If you've forked this project and are building systems
using CI, make sure to update your publish scripts.

* Updated dependencies
  * [nerves_system_br v1.0.0-rc.2](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.0.0-rc.2)

## v1.0.0-rc.0

* Updated dependencies
  * [nerves_system_br v1.0.0-rc.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v1.0.0-rc.0)
  * [nerves_toolchain v1.0.0-rc.0](https://github.com/nerves-project/toolchains/releases/tag/v1.0.0-rc.0)
  * [nerves v1.0.0-rc.0](https://github.com/nerves-project/nerves/releases/tag/1.0.0-rc.0)

## v0.20.0

* Updated dependencies
  * [nerves_system_br v0.17.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v0.17.0)
  * [nerves_toolchain v0.13.0](https://github.com/nerves-project/toolchains/releases/tag/v0.13.0)
  * [nerves v0.9.0](https://github.com/nerves-project/nerves/releases/tag/v0.9.0)

## v0.19.1

* Updated dependencies
  * [nerves_system_br v0.16.3](https://github.com/nerves-project/nerves_system_br/releases/tag/v0.16.3)
    This fixes the call to  otp_build so that it always uses Buildroot's version
    the autoconf tools.

## v0.19.0

* Updated dependencies
  * [nerves_system_br v0.16.1-2017-11](https://github.com/nerves-project/nerves_system_br/releases/tag/v0.16.1-2017-11)

* Enhancements
  * Reboot automatically if Erlang VM exits - This is consistent with other
    Nerves systems. See rootfs_overlay/etc/erlinit.config if undesired.
  * Start running nerves_system_linter to check for configuration errors.
  * Disable console blanking for HDMI to make it easier to capture error messages.
  * Automount the boot partition readonly at `/boot`
  * Support for reverting firmware.

    See [Reverting Firmware](https://hexdocs.pm/nerves_runtime/readme.html#reverting-firmware) for more info on reverting firmware.

    See [fwup-revert.conf](https://github.com/nerves-project/nerves_system_rpi/blob/master/fwup-revert.conf) for more information on how fwup handles reverting.

## v0.18.0

* Updated dependencies
  * [nerves_system_br v0.15.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v0.15.0)
  * [toolchain v0.12.1](https://github.com/nerves-project/toolchains/releases/tag/v0.12.1)

* Enhancements
  * Support for nerves 0.8. Moves nerves.exs into mix.exs
  * Support for the Raspberry Pi Compute Module
  * Select ARM Cortex A53 as CPU for Buildroot

## v0.17.1

* Updated dependencies
  * [nerves_system_br v0.14.1](https://github.com/nerves-project/nerves_system_br/releases/tag/v0.14.1)

## v0.17.0

* Updated dependencies
  * [nerves_system_br v0.14.0](https://github.com/nerves-project/nerves_system_br/releases/tag/v0.14.0)
    * [Buildroot 2017.08](https://git.busybox.net/buildroot/plain/CHANGES?id=2017.08)
    * [fwup 0.17.0](https://github.com/fhunleth/fwup/releases/tag/v0.17.0)
    * [erlinit 1.2.0](https://github.com/nerves-project/erlinit/releases/tag/v1.2.0)
    * [nbtty 0.3.0](https://github.com/fhunleth/nbtty/releases/tag/v0.3.0)

* Enhancements
  * Add global patch directory

  This is required to pull in the e2fsprogs patch that's needed now that
  util-linux's uuid_generate function calls getrandom and can block
  indefinitely for the urandom pool to initialize

## v0.16.1

* Updated dependencies
  * nerves_system_br v0.13.7

## v0.16.0

This release contains an updated toolchain with Linux 4.1 Headers.
You will have to clean and compile any c/c++ code in your project and
dependencies. Failure to do so will result in an error when producing firmware.

* nerves_system_br v0.13.5
  * fwup 0.15.4

* Nerves toolchain v0.11.0

## v0.15.0

* nerves_system_br v0.13.3
  * erlinit 1.1.4

* New features
  * Firmware updates verify that they're updating the right target. If the target
    doesn't say that it's an `rpi3` through the firmware metadata, the update
    will fail.
  * Added meta-misc and meta-vcs-identifier to the `fwup.conf` metadata for use
    by users and for the regression test framework
  * Use String.trim instead of String.strip to silence Elixir 1.5 warnings

## v0.14.0

* nerves_system_br v0.13.2
  * OTP 20
  * erlinit 1.1.3
  * fwup 0.15.3

## v0.13.0

* nerves_system_br v0.12.1
  * erlinit 1.1.1
  * fwup 0.15.0

* New features
  * The application data partition is now `ext4`. This greatly improves its
    robustness to corruption. Nerves.Runtime contains code to initialize it on
    first boot.
  * Firmware images now contain metadata that can be queried at runtime (see
    Nerves.Runtime.KV
  * Increased GPU memory to support Pi Camera V2

## v0.12.0

* nerves_system_br v0.10.0
  * Buildroot 2017.02
  * Erlang/OTP 19.3

* New features
  * Upgraded the Linux kernel from 4.4.43 -> 4.4.50. Due to the coupling
    between the Linux kernel and rpi-firmware and possibly rpi-userland, if
    you have a custom system based off this, you should update your Linux
    kernel as well. (see `nerves_defconfig`)

## v0.11.0

* New features
  * Enabled USB_SERIAL and FTDI_SIO support. Needed for connecting with Arduino to the USB ports
  * Support for Nerves 0.5.0

## v0.10.0

* New features
  * Upgraded the Linux kernel to 4.4.43. This also removes the
    call to mkknlimg which is no longer needed.
  * Bump toolchain to use gcc 5.3 (previously using gcc 4.9.3)
* Bug Fixes
  * brcmfmac is being compiled as a module. This means that in order to use wifi you will need to `modprobe brcmfmac`. This addresses an issue where the module would not initialize properly on some boards.

## v0.9.1

* Bug Fixes
* Fixed issues with wifi not starting on some devices

## v0.9.0

This version switches to using the `nerves_package` compiler. This will
consolidate overall deps and compilers.

* Nerves.System.BR v0.8.1
  * Support for distillery
  * Support for nerves_package compiler

## v0.7.0

When upgrading to this version, be sure to review the updates to
nerves_defconfig if you have customized this system.

* nerves_system_br v0.6.2
  * Package updates
    * Buildroot 2016.08
    * Linux 4.4

## v0.6.1

* Package versions
  * Nerves.System.BR v0.6.1

* New features
  * All Raspberry Pi 3-specific configuration is now in this repository

## v0.6.0

* Nerves.System.BR v0.6.0
  * Package updates
    * Erlang OTP 19
    * Elixir 1.3.1
    * fwup 0.8.0
    * erlinit 0.7.3
    * bborg-overlays (pull in I2C typo fix from upstream)
  * Bug fixes
    * Synchronize file system kernel configs across all platforms

## v0.5.2

* Enhancements
  * Enabled USB Printer kernel mod. Needs to be loaded with `modprobe` to use
* Bug Fixes(raspberry pi)
  * Enabled multicast in linux config

## v0.5.1

* Nerves.System.BR v0.5.1
  * Bug Fixes(nerves-env)
    * Added include paths to CFLAGS and CXXFLAGS
    * Pass sysroot to LDFLAGS

## v0.5.0

* Nerves.System.BR v0.5.0
  * New features
    * WiFi drivers enabled by default on RPi2 and RPi3
    * Include wireless regulatory database in Linux kernel by default
      on WiFi-enabled platforms. Since kernel/rootfs are read-only and
      coupled together for firmware updates, the normal CRDA/udev approach
      isn't necessary.
    * Upgraded the default BeagleBone Black kernel from 3.8 to 4.4.9. The
      standard BBB device tree overlays are included by default even though the
      upstream kernel patches no longer include them.
    * Change all fwup configurations from two step upgrades to one step
      upgrades. If you used the base fwup.conf files to upgrade, you no
      longer need to finalize the upgrade. If not, there's no change.

## v0.4.1

* Nerves.System.BR v0.4.1
  * Bug fixes
    * syslinux fails to boot when compiled on some gcc 5 systems
    * Fixed regression when booting off eMMC on the BBB

  * Package updates
    * Erlang 18.3
    * Elixir 1.2.5