Instead of embedding the initrd cpio archive into the kernel, allow
for having an external ramdisk added to the FIT or uImage.
This is useful to overcome kernel size limitations present in many
stock bootloaders, as the ramdisk is then loaded seperately and doesn't
add to the kernel size. Hence we can have larger ramdisks to host ie.
installers with all binaries to flash included (or a web-based
firmware selector).
In terms of performance and total size the differences are neglectible.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
The license folder is a core part of OpenWrt and all GPL-2.0 licensed.
Use SPDX license tags to allow machines to check licenses.
Signed-off-by: Paul Spooren <mail@aparcar.org>
[rebase, keep some Copyright lines, sharpen commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Linux 5.9 introduces support for ZSTD ramdisk and initrd compression,
make sure we enable/disable the relevant options when building an
initramfs enabled kernel.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
When we use an external kernel tree which may not have been fully
cleaned, there may be user_headers left which do not match the target
architecture, leading to build failures for packages that do an explicit
inclusion of user_headers (such as iproute2 or iptables). Make sure we
delete them while preparing the directory.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
On non-GNU systems, zcat often does not handle gzip decompression.
Use gzip -dc like the regular unpack command
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This is a follow up of 8cb13f4e6d which sets the right timestamp for the
/init file in initramfs. The previous patch doesn't cover it as the
files appear to come from a later step during compilation.
CC: Alexander Couzens <lynxis@fe80.eu>
Signed-off-by: Paul Spooren <mail@aparcar.org>
They are no longer stored in the "testing" subdirectory and are not
available as .tar.xz archives. If -rc is detected download it from the
git.kernel.org and use .tar.gz.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
In commit fce35bce0f ("config: support new symbol intro'd in kernel
4.12")
I forgot to remove the initial debug test line.
This clearly is wrong as the same symbol is defined conditionally in the
line below as it should be.
I looked over it as I just checked if the symbol was present now upon
testing it.
Fixes: fce35bce0f ("config: support new symbol intro'd in kernel
4.12")
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
Symbol CONFIG_INITRAMFS_FORCE allows to ignore the value passed by the
bootloader.
By default, all symbols containing INITRAMFS are wiped from the final
config and then re-added conditionally.
Add support for this symbol, as the build will stop otherwise
questioning the user about this option:
* Restart config...
*
*
* General setup
*
Cross-compiler tool prefix (CROSS_COMPILE) []
Compile also drivers which will not load (COMPILE_TEST) [N/y/?] n
...
Initial RAM filesystem and RAM disk (initramfs/initrd) support
(BLK_DEV_INITRD) [Y/n/?] y
Initramfs source file(s) (INITRAMFS_SOURCE) []
Ignore the initramfs passed by the bootloader (INITRAMFS_FORCE)
[N/y/?] (NEW)
Signed-off-by: Koen Vandeputte <koen.vandeputte@ncentric.com>
This allows packages to use kernel make options without the forced
-C $(LINUX_DIR). It also makes it more clear that it to be called from
kernel module packages directly.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
In case we use external and/or git cloned kernels, let the kernel
determine the appropriate KERNELRELEASE. We cannot used
LINUX_UNAME_VERSION because that one gets determined at a later time,
when the kernel is already built proper.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This reverts commit 0df2c6563a since it
gets in the way of identifying properly which kernel we are running.
This is particularly important if LEDE is using external kernels/git
cloned kernels. We want to make sure we only load modules from that
specific kernel.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Keeping it in base-files was resulting in adding it to the base-files
package. This file is meant to be included manually for initramfs
images only.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
KERNELRELEASE contains a $(shell) call which is evaluated over and over
again.
The call to checksyscalls.sh is unnecessary for LEDE and also takes a
few seconds to complete.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Utilize the existing git download logic from include/download.mk and migrate
the kernel download over to it. This avoids repeatedly cloning kernel sources
after a make target/linux/clean for instance.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name> [fix build error]
When the kernel build picks up a localversion file in the source tree,
that string is unconditionally appended to LOCALVERSION and affects the
uname string.
Make sure to delete any such file.
Signed-off-by: Josua Mayer <josua.mayer97@gmail.com>
When building the kernel from a git repository, the kernel build appends
either a + or a short commit hash to localversion.
This behaviour can be prevented by passing the empty LOCALVERSION variable
to make.
Signed-off-by: Josua Mayer <josua.mayer97@gmail.com>
Similar how we fix the file times in the filesystems, fix the build time
of the kernel, and make the build number static. This should allow the
kernel build to be reproducable when combined with setting the
KERNEL_BUILD_USER and _DOMAIN in case of different machines.
The reproducability only applies to non-initramfs kernels, those still
require additional changes.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
This reverts r48591, users needing NFS root will know how to configure
their platform and kernel command-line appropriately.
Reported-by: Petr Štetiar <ynezz@true.cz>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 48689
It was enabled ages ago when it was added.
It still saves about 10k after LZMA, so let's enable it again.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48680
Replace the configured root device with a NFS root device and automatic
IP configuration for booting over NFS.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 48591
These allow the generated kernel's build metadata to be defined explicitly.
This metadata is reported, eg, at boot time and in `uname -a` on running
systems. If the variables aren't configured, the current build system username
and hostname are used as normal.
The motivation for this option is to achive reproducible (bit-for-bit
identical) kernel builds of official openwrt releases.
Signed-off-by: bryan newbold <bnewbold@robocracy.org>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48541
This change adds support for specifying a build ID for kernel modules.
This is done by setting PKG_BUILD_ID to a hexadecimal string, which will
then be passed to the kernel linker. In addition, when this flag is set,
the build ID debug symbol (.note.gnu.build-id) will not be stripped from
the kernel module. This symbol is exported in sysfs by the kernel (if
the kernel is compiled with CONFIG_KALLSYMS) and so can be used to
uniquely identify a version of a kernel module in a running kernel. This
is useful for keeping track of different versions of a module when doing
experiments and development.
Modules that specify the build ID will be ~100 bytes larger (depending
on the length of the build ID specified). There is no size difference
for kernel modules that do not set this variable.
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
SVN-Revision: 47290
Otherwise the modpost steps for individual modules that are compiled
manually (using make package/<name_of_module>/install) will give warning
of missing symbols when that module depends other modules.
This is caused by the Module.symvers file not containing any symbols
anymore of external modules when the initramfs image is built without
specifically giving the modules target.
Signed-off-by: Tjalling Hattink <t.hattink@fugro.nl>
SVN-Revision: 42773
This allows the selection of a specific branch in the menuconfig
when using a kernel downloaded from GIT.
Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>
SVN-Revision: 40946
The way git options are managed in kernel-defaults.mk makes additions
difficult. If requires different code path for each option; it's
ok so far as we handle only one option, but if we want to make the git
clone mechanism more flexible, more option will be required, which
will become tedious.
So; we'll move the GIT options into a variable, that may or may not be
set depending on the configuration, and we'll pass this variable to the
git command.
Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>
SVN-Revision: 40945
The GIT_LOCAL_REPOSITORY option adds the --reference argument to the
git clone kernel command line, if KERNEL_GIT_CLONE_URI is set.
This option is intended to speed-up the repo creation by using local
objets rather than downloading it. However, a local repo can be cloned
much faster by setting GIT_LOCAL_REPOSITORY directly to the local tree.
In that case, git clone will bypass the normal "git aware" transport
mechanism and clone the repository by copying and hardlinking objects
rather than downloading it, resulting in a significant speed increase.
That makes the GIT_LOCAL_REPOSITORY option pretty useless so we'll just
remove it and recommand the usage of KERNEL_GIT_CLONE_URI directly.
Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>
SVN-Revision: 40944
This change does multiple things, all related to enable sparse usage as
a static analysis tool selectable from the OpenWrt configuration:
*add a KERNEL_SPARSE option in the config to add sparse to the kernel
build (through the C=1 option usage)
*add sparse as a new host tools. It will get selected automatically when
the above option will be enabled
Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>
SVN-Revision: 40490
