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Sander Vanheule c20b8d690b build: add UIMAGE_MAGIC to device variables
Allow a device recipe to specify a custom UIMAGE_MAGIC value, as used by
OpenWrt's -M flag for mkimage. This allows to automatically customize
the magic bytes in all calls to Build/uImage for this device, similar to
the behaviour of UIMAGE_NAME. Since the -M argument is inserted before
the user arguments, it can be overriden.

The following example would use 0x87654321 for the KERNEL image, but
0x12345678 for the KERNEL_INITRAMFS image:

  define Device/MyDevice
    UIMAGE_MAGIC := 0x87654321
    KERNEL := ... | uImage lzma
    KERNEL_INITRAMFS := ... | uImage lzma -M 0x12345678
    ...
  endef

Fixes: df8e6be59a ("rtl838x: add new architecture")
[UIMAGE_MAGIC was not declared as a device variable]

Signed-off-by: Sander Vanheule <sander@svanheule.net>
[rebase, improve formatting of "Fixes"]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2020-11-25 15:55:26 +01:00
.github
config Revert "refpolicy: add variant that builds modular policy" 2020-11-22 15:20:35 +00:00
include build: add UIMAGE_MAGIC to device variables 2020-11-25 15:55:26 +01:00
package ath79: add support for Senao Engenius EAP300 v2 2020-11-25 13:23:06 +01:00
scripts scripts: add size_compare.sh 2020-11-24 18:18:48 -10:00
target ramips: mt7621: drop custom uImage function 2020-11-25 15:51:22 +01:00
toolchain musl: handle wcsnrtombs destination buffer overflow (CVE-2020-28928) 2020-11-20 13:24:48 +01:00
tools treewide: update email address of Tomasz Maciej Nowak 2020-11-24 15:39:07 +01:00
.gitattributes
.gitignore build: improve ccache support 2020-07-11 15:19:53 +02:00
BSDmakefile
Config.in
LICENSE LICENSE: use updated GNU copy 2020-08-02 15:54:43 +02:00
Makefile build: improve ccache support 2020-07-11 15:19:53 +02:00
README.md README: port to 21st century 2020-08-02 15:44:40 +02:00
feeds.conf.default
logo.svg README: port to 21st century 2020-08-02 15:44:40 +02:00
rules.mk rules.mk: simplify FAKEROOT command line 2020-10-30 00:39:09 +00:00

README.md

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.

gcc binutils bzip2 flex python3 perl make find grep diff unzip gawk getopt
subversion libz-dev libc-dev

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.

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 freenode.net.

Developer Community

License

OpenWrt is licensed under GPL-2.0