f7f9e6bd20
Buffalo WCR-1166DS uses trx-fomatted firmware and the custom magic number (0x5C436F74, "\Cot") is required for OpenWrt installation from OEM WebUI. But the current mtdsplit_trx doesn't support the custom magic number and fail to parse and split to kernel and rootfs when the factory image is flashed. Then, the kernel fails to mount rootfs automatically and panics. Before the commitfddc78bc11, mtdsplit_trx was patched in ramips target and the device-specific magic number was supported only for WCR-1166DS[1]. But the patch was not inherited to the later version of the kernel and deleted by the above commit, then, the custom magic number support was broken. [1]:05d6e92594/target/linux/ramips/patches-4.4/0400-mtd-mtdsplit-add-support-for-custom-trx-magic-for-Buffalo-WCR-1166DS.patch (L27)log (factory image): [ 1.165312] spi-mt7621 10000b00.spi: sys_freq: 193333333 [ 1.195782] spi-nor spi0.0: w25q128 (16384 Kbytes) [ 1.205353] 7 fixed-partitions partitions found on MTD device spi0.0 [ 1.217938] Creating 7 MTD partitions on "spi0.0": [ 1.227436] 0x000000000000-0x000000030000 : "u-boot" [ 1.238427] 0x000000030000-0x000000040000 : "u-boot-env" [ 1.250123] 0x000000040000-0x000000050000 : "factory" [ 1.261306] 0x000000050000-0x000000810000 : "firmware" [ 1.282051] 0x000000810000-0x000000fd0000 : "firmware2" [ 1.293594] 0x000000fd0000-0x000000fe0000 : "glbcfg" [ 1.304719] 0x000000fe0000-0x000000ff0000 : "board_data" ... [ 1.452424] /dev/root: Can't open blockdev [ 1.460619] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6 [ 1.475434] Please append a correct "root=" boot option; here are the available partitions: [ 1.491986] 1f00 192 mtdblock0 [ 1.491989] (driver?) [ 1.504938] 1f01 64 mtdblock1 [ 1.504941] (driver?) [ 1.517885] 1f02 64 mtdblock2 [ 1.517888] (driver?) [ 1.530831] 1f03 7936 mtdblock3 [ 1.530834] (driver?) [ 1.543777] 1f04 7936 mtdblock4 [ 1.543781] (driver?) [ 1.556724] 1f05 64 mtdblock5 [ 1.556727] (driver?) [ 1.569672] 1f06 64 mtdblock6 [ 1.569675] (driver?) [ 1.582617] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) [ 1.598976] Rebooting in 1 seconds.. This patch fixes this issue by using parser_trx with specifying custom magic number in dts instead of mtdsplit_trx. log (fixed factory image): [ 1.202044] spi-mt7621 10000b00.spi: sys_freq: 193333333 [ 1.225369] spi-nor spi0.0: w25q128 (16384 Kbytes) [ 1.235015] 7 fixed-partitions partitions found on MTD device spi0.0 [ 1.247603] Creating 7 MTD partitions on "spi0.0": [ 1.257106] 0x000000000000-0x000000030000 : "u-boot" [ 1.269447] 0x000000030000-0x000000040000 : "u-boot-env" [ 1.281192] 0x000000040000-0x000000050000 : "factory" [ 1.294208] 0x000000050000-0x000000810000 : "firmware" [ 1.305774] 2 trx partitions found on MTD device firmware [ 1.316540] Creating 2 MTD partitions on "firmware": [ 1.326399] 0x00000000001c-0x000000214754 : "linux" [ 1.336063] mtd: partition "linux" doesn't start on an erase/write block boundary -- force read-only [ 1.357070] 0x000000214754-0x0000007c0000 : "rootfs" [ 1.366994] mtd: partition "rootfs" doesn't start on an erase/write block boundary -- force read-only [ 1.386368] mtd: device 5 (rootfs) set to be root filesystem [ 1.398700] 1 squashfs-split partitions found on MTD device rootfs [ 1.411027] 0x000000520000-0x0000007c0000 : "rootfs_data" [ 1.422841] 0x000000810000-0x000000fd0000 : "firmware2" [ 1.436282] 0x000000fd0000-0x000000fe0000 : "glbcfg" [ 1.447408] 0x000000fe0000-0x000000ff0000 : "board_data" ... [ 1.611216] VFS: Mounted root (squashfs filesystem) readonly on device 31:5. Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
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
-
Run
./scripts/feeds update -ato obtain all the latest package definitions defined in feeds.conf / feeds.conf.default -
Run
./scripts/feeds install -ato install symlinks for all obtained packages into package/feeds/ -
Run
make menuconfigto select your preferred configuration for the toolchain, target system & firmware packages. -
Run
maketo 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.
Related Repositories
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
#openwrton oftc.net.
Developer Community
- Bug Reports: Report bugs in OpenWrt
- Dev Mailing List: Send patches
- Dev Chat: Channel
#openwrt-develon oftc.net.
License
OpenWrt is licensed under GPL-2.0