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Some devices (TP-Link TL-WR1043ND v1) don't boot reliably when the
uncompressed loader is too small. This was workarounded in the loader by
adding 512KB of padding to the .data section of the loader binary.
This approach had two issues:
- The padding was only working when .data was non-empty (otherwise the
section would become NOBITS, omitting it in the binary). .data was only
empty when no CMDLINE was set, leading to further workarounds like
fe594bf90d09 ("ath79: fix loader-okli, lzma-loader"), and this
workaround was only effective because a missing "const" led to the kernel
argv being stored in .data instead of .rodata
- The padding was not only added to the compressed .gz loader, but also
uncompressed .bin and .elf loaders. The prevented embedding the kernel
cmdline in the loader for non-gz loader types.
To fix both issues, move the creation of the padding from the linker script
to the gzip step.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
This is the buildsystem for the OpenWrt Linux distribution. Please use "make menuconfig" to choose your preferred configuration for the toolchain and firmware. You need to have installed gcc, binutils, bzip2, flex, python, perl, make, find, grep, diff, unzip, gawk, getopt, subversion, libz-dev and libc headers. Run "./scripts/feeds update -a" to get all the latest package definitions defined in feeds.conf / feeds.conf.default respectively and "./scripts/feeds install -a" to install symlinks of all of them into package/feeds/. Use "make menuconfig" to configure your image. Simply running "make" will build your firmware. It will download all sources, build the cross-compile toolchain, the kernel and all choosen applications. To build your own firmware you need to have access to a Linux, BSD or MacOSX system (case-sensitive filesystem required). Cygwin will not be supported because of the lack of case sensitiveness in the file system. Sunshine! Your OpenWrt Community http://www.openwrt.org