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Adrian Schmutzler 9d96b6fb72 ath79/mikrotik: disable building NAND images
The current support for MikroTik NAND-based devices relies on a
gross hack that packs the kernel into a static YAFFS stub, as the
stock bootloader only supports booting a YAFFS-encapsulated kernel.

The problem with this approach is that since the kernel partition is
blindly overwritten without any kind of wear or badblock management
(due to lack of proper support for YAFFS in OpenWRT), the NAND flash
is not worn uniformly and eventually badblocks appear, leading to
unbootable devices.

This issue has been reported here [1] and discussed in more detail
here [2].

[1] https://forum.openwrt.org/t/rb433-bad-sector-cannot-start-openwrt/71519
[2] https://github.com/openwrt/openwrt/pull/3026#issuecomment-673597461

Until a proper fix is found (or the stock bootloader supports other
filesystems), we disable building these images to prevent unknowing
users from risking their devices.

Thanks to Thibaut Varène for summarizing the details above.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2020-12-27 20:33:57 +01:00
.github build: Update README & github help 2018-07-08 09:41:53 +01:00
config kernel: only strip proc for small flash devices 2020-12-22 19:11:50 +01:00
include kernel: bump 5.4 to 5.4.85 2020-12-22 19:11:50 +01:00
package ethtool: update to version 5.10 2020-12-26 20:39:25 +01:00
scripts ipq40xx: add support for Plasma Cloud PA2200 2020-12-22 19:11:50 +01:00
target ath79/mikrotik: disable building NAND images 2020-12-27 20:33:57 +01:00
toolchain toolchain: Fix glibc selection on ARC targets 2020-12-23 00:45:19 +01:00
tools Revert "ccache: update to 4.1" 2020-12-22 20:55:40 +01:00
.gitattributes add .gitattributes to prevent the git autocrlf option from messing with CRLF/LF in files 2012-05-08 13:30:49 +00:00
.gitignore build: improve ccache support 2020-07-11 15:19:53 +02:00
BSDmakefile add missing copyright header 2007-02-26 01:05:09 +00:00
Config.in merge: base: update base-files and basic config 2017-12-08 19:41:18 +01:00
feeds.conf.default feeds: add freifunk feed 2020-06-24 14:58:17 +02:00
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 build: require rsync 2020-12-07 18:23:13 +02:00
rules.mk rules.mk: use -fPIC instead of -fpic on arm64 2020-12-07 18:23:13 +02:00

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.

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

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.

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