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Rafał Miłecki 93259e8ca2 bcm4908: support "rootfs_data" on U-Boot devices
1. Create "rootfs_data" dynamicaly

U-Boot firmware images can contain only 2 UBI volumes: bootfs (container
with U-Boot + kernel + DTBs) and rootfs (e.g. squashfs). There is no way
to include "rootfs_data" UBI volume or make firmware file tell U-Boot to
create one.

For that reason "rootfs_data" needs to be created dynamically. Use
preinit script to handle that. Fire it right before "mount_root" one.

2. Relate "rootfs_data" to flashed firmware

As already explained flashing new firmware with U-Boot will do nothing
to the "rootfs_data". It could result in new firmware reusing old
"rootfs_data" overlay UBI volume and its file. Users expect a clean
state after flashing firmware (even if flashing the same one).

Solve that by reading flash counter of running firmware and storing it
in "rootfs_data" UBI volume. Every mismatch will result in wiping old
data.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
2022-03-04 16:14:59 +01:00
.github CI: build changes in tools/ on ubuntu/macos 2022-02-25 12:49:03 +01:00
config config: build: cleanup whitespace issue 2022-02-19 13:10:01 +01:00
include kernel: bump 5.10 to 5.10.102 2022-03-01 21:38:36 +01:00
LICENSES
package procd: remove support for mounting /tmp in zram 2022-03-03 20:22:25 +00:00
scripts check-toolchain-clean.sh: workaround stray rebuilds 2022-02-28 15:17:11 +01:00
target bcm4908: support "rootfs_data" on U-Boot devices 2022-03-04 16:14:59 +01:00
toolchain toolchain: glibc: Remove patch for ARC700 2022-02-01 21:25:02 +01:00
tools tools/libressl: update to version 3.4.2 2022-03-01 00:08:08 +01:00
.gitattributes
.gitignore .gitgnore: add llvm-bpf 2021-11-21 18:18:01 +01:00
BSDmakefile
Config.in build: scripts/config - update to kconfig-v5.14 2022-02-19 13:10:01 +01:00
COPYING
feeds.conf.default feeds: use git-src-full to allow Git versioning 2022-02-15 00:24:24 +01:00
Makefile treewide: drop use of which 2022-01-17 09:14:26 +01:00
README.md
rules.mk build: change PYTHON to python3 2022-01-24 13:29:05 +01:00

OpenWrt logo

OpenWrt Project is a Linux operating system targeting embedded devices. Instead of trying to create a single, static firmware, OpenWrt provides a fully writable filesystem with package management. This frees you from the application selection and configuration provided by the vendor and allows you to customize the device through the use of packages to suit any application. For developers, OpenWrt is the framework to build an application without having to build a complete firmware around it; for users this means the ability for full customization, to use the device in ways never envisioned.

Sunshine!

Development

To build your own firmware you need a GNU/Linux, BSD or MacOSX system (case sensitive filesystem required). Cygwin is unsupported because of the lack of a case sensitive file system.

Requirements

You need the following tools to compile OpenWrt, the package names vary between distributions. A complete list with distribution specific packages is found in the Build System Setup documentation.

binutils bzip2 diff find flex gawk gcc-6+ getopt grep install libc-dev libz-dev
make4.1+ perl python3.6+ rsync subversion unzip which

Quickstart

  1. Run ./scripts/feeds update -a to obtain all the latest package definitions defined in feeds.conf / feeds.conf.default

  2. Run ./scripts/feeds install -a to install symlinks for all obtained packages into package/feeds/

  3. Run make menuconfig to select your preferred configuration for the toolchain, target system & firmware packages.

  4. Run make to build your firmware. This will download all sources, build the cross-compile toolchain and then cross-compile the GNU/Linux kernel & all chosen applications for your target system.

The main repository uses multiple sub-repositories to manage packages of different categories. All packages are installed via the OpenWrt package manager called opkg. If you're looking to develop the web interface or port packages to OpenWrt, please find the fitting repository below.

  • LuCI Web Interface: Modern and modular interface to control the device via a web browser.

  • OpenWrt Packages: Community repository of ported packages.

  • OpenWrt Routing: Packages specifically focused on (mesh) routing.

  • OpenWrt Video: Packages specifically focused on display servers and clients (Xorg and Wayland).

Support Information

For a list of supported devices see the OpenWrt Hardware Database

Documentation

Support Community

  • Forum: For usage, projects, discussions and hardware advise.
  • Support Chat: Channel #openwrt on oftc.net.

Developer Community

License

OpenWrt is licensed under GPL-2.0