Commit Graph

260 Commits

Author SHA1 Message Date
Yann E. MORIN
49bf417618 package/libselinux: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Adam Duskett <aduskett@gmail.com>
Cc: Clayton Shotwell <clayton.shotwell@rockwellcollins.com>
Cc: Matt Weber <matthew.weber@rockwellcollins.com>
Cc: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Matt Weber <matthew.weber@rockwellcollins.com>
Reviewed-by: Adam Duskett <aduskett@gmail.com>
Tested-by: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:29 +02:00
Yann E. MORIN
b294165e01 package/wireguard-linux-compat: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:29 +02:00
Yann E. MORIN
0d8e61e827 package/xtables-addons: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:29 +02:00
Yann E. MORIN
ee07995ac5 package/iptables: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:29 +02:00
Yann E. MORIN
1b4a2bd8e4 package/sunxi-mali-mainline-driver: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:29 +02:00
Yann E. MORIN
2bac81f0cb package/smack: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:28 +02:00
Yann E. MORIN
94cb814511 package/systemd: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Adam Duskett <aduskett@gmail.com>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:28 +02:00
Yann E. MORIN
df988d40e7 package/pcm-tools: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:28 +02:00
Yann E. MORIN
b18824ffcb package/ktap: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Anders Darander <anders@chargestorm.se>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:28 +02:00
Yann E. MORIN
af43d0aa34 package/intel-micro-code: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Cc: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:28 +02:00
Yann E. MORIN
ad42b7f6f0 package/audit: bear the kernel options munging
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Adam Duskett <aduskett@gmail.com>
Cc: Clayton Shotwell <clayton.shotwell@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:28 +02:00
Yann E. MORIN
0aed4c2dae linux: allow packages to set kernel config options
Currently, the linux kernel will apply some fixups on its .config file,
based on whether some packages are enabled or not. That list of
conditional fixups is getting bigger and bigger with each new package
that needs such fixups, culminating with the pending firewalld one [0].

Furthermore, these fixups are not accessible to packages in br2-external
trees.

Add a new per-package variable, that packages may set to the commands to
run to fixup the kernel .config file, which is added at the end of the
linux' own fixups.

This opens the possibility to write things like;

    define FOO_LINUX_CONFIG_FIXUPS
        $(call KCONFIG_ENABLE_OPT,BLA)
    endef

Of course, it also opens the way to run arbitrary commands in there, but
any alternative that would be declarative only, such as a list of
options to enable or disable (as an example):

    FOO_LINUX_CONFIG_FIXUPS = +BAR -FOO +BUZ="value"

.. is not very nice either, and such lists fall flat when a value would
have a space.

For packages that we have in-tree, we can ensure they won't play foul
with their _LINUX_CONFIG_FIXUPS. For packages in br2-external trees,
there's nothing we can do; users already have the opportunity to hack
into the linux configure process by providing LINUX_PRE_CONFIGURE_HOOKS
or LINUX_POST_CONFIGURE_HOOKS anyway...

.. which brings the question of why we don't use that to implement the
per-package fixups. We don't, because _PRE or _POST_CONFIGURE_HOOKS are
run after we run 'make oldconfig' to sanitise the mangled .config.

[0] http://lists.busybox.net/pipermail/buildroot/2020-March/278683.html

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Cc: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:28 +02:00
Yann E. MORIN
d321c092d3 linux: don't specify .config to munge
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-05-01 15:50:28 +02:00
Angelo Compagnucci
67e576fab5 linux: enable AppArmor-related options if needed
Using AppArmor requires support in the kernel, so do for AppArmor what
we did for SElinux, and enabled the necessary options.

Note that a single LSM can be the default one, so as of today, SELinux
wins, by virtue of being the last to be enabled.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
[yann.morin.1998@free.fr:
  - don't force DEFAULT_SECURITY_APPARMOR, it does not exist in all
    kernel versions
  - move closer to SELinux
  - split into its own patch, write a commit log
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Tested-by: Angelo Compagnucci <angelo@amarulasolutions.com>
2020-04-20 09:53:05 +02:00
Thomas Petazzoni
19be97d497 linux: do not install images in subdirectories
The Linux kernel image is typically found in arch/ARCH/boot/, which is
why LINUX_IMAGE_PATH is defined as:

LINUX_IMAGE_PATH = $(LINUX_ARCH_PATH)/boot/$(LINUX_IMAGE_NAME)

However, on MIPS, some kernel image types are available from
arch/mips/boot/compressed, or even at the top-level directory. For
such cases, LINUX_IMAGE_NAME might be set (using
BR2_LINUX_KERNEL_IMAGE_NAME) to values such as:

  compressed/vmlinux.bin.z

or

  ../../../uzImage.bin

Except that the line:

  $(INSTALL) -m 0644 -D $(LINUX_IMAGE_PATH) $(1)/$(LINUX_IMAGE_NAME)

will lead to such images be installed in:

  $(TARGET_DIR)/boot/compressed/vmlinux.bin.z
  $(BINARIES_DIR)/compressed/vmlinux.bin.z

and:

  $(TARGET_DIR)/boot/../../../uzImage.bin
  $(BINARIES_DIR)/../../../uzImage.bin

which of course is completely bogus.

So let's install them under their name, not their full relative path
to arch/ARCH/boot/.

Reported-by: Paul Cercueil <paul@crapouillou.net>
Cc: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2020-04-03 00:23:49 +02:00
Carlos Santos
43f41a7bf8 linux: run depmod only if modules are enabled
If the kernel configuration CONFIG_MODULES disabled, there's no
/lib/modules/<version> directory, causing this:

depmod: ERROR: could not open directory [...]/target/lib/modules/4.19.8: No such file or directory
depmod: FATAL: could not search modules: No such file or directory
Makefile:745: recipe for target 'target-finalize' failed

Fixes:

https://gitlab.com/buildroot.org/buildroot/-/jobs/483712831
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712817
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712814
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712796
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712729
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712727
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712698
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712691
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712660
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712573
https://gitlab.com/buildroot.org/buildroot/-/jobs/483712574

Reported-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-03-25 07:29:36 +01:00
Carlos Santos
82e7656400 linux: Allow modprobe for out-of-tre modules
When a package installs a kernel module, it is currently not possible to
have it loaded with modprobe or when the kernel requests an alias for
it, as the module is not listed in /lib/modules/<kernel-version>/modules.dep
and the associated files.

So, we need to run depmod after all packages are installed, to register
any such out-of-tree module.

This means we should be able to let go of calling depmod at the time the
kernel is installed, but if we pass an invalid command, the kernel
whines:

      DEPMOD  5.4.27
    ./scripts/depmod.sh: 46: /dev/null: Permission denied
    make[2]: *** [Makefile:1326: _modinst_post] Error 126

This is because the kernel does not directly call to depmod, but uses a
wrapper that is not happy if depmod is not depmod.

Since the call to depmod does not cost much, we just keep it.

Signed-off-by: Carlos Santos <unixmania@gmail.com>
[yann.morin.1998@free.fr:
  - keep calling depmod when installing kernel
  - expand commit log
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2020-03-21 21:43:31 +01:00
Adam Duskett
326777c82f linux: add automatic selinux config selection
Enabling SELinux support in the kernel requires several options, many
of which are in different areas. These options are as follows:

  - CONFIG_AUDIT
  - CONFIG_DEFAULT_SECURITY_SELINUX
  - CONFIG_INET
  - CONFIG_NET
  - CONFIG_SECURITY
  - CONFIG_SECURITY_NETWORK
  - CONFIG_SECURITY_SELINUX

As such, if a user selects the libselinux package, it is much easier
to select these options for them, much like we already do with other
packages such as systemd or iptables.

Signed-off-by: Adam Duskett <Aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-03-14 15:36:44 +01:00
Peter Korsgaard
953538b650 linux: use correct conditional for wireguard kernel config fixup
Commit de591c5c3a (package/wireguard-linux-compat: new package) split up
the wireguard package in wireguard-tools and wireguard-linux-compat, but
forgot to update the conditional in linux.mk, so the kernel config fixups
needed for wireguard are no longer applied.

Update the conditional to use the BR2_PACKAGE_WIREGUARD_LINUX_COMPAT symbol
instead.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2020-02-16 15:27:05 +01:00
Markus Mayer
af33b1c293 linux: license files hashes are only valid for latest known version
The content of COPYING changed between v4.16 and v4.17. Since kernels
before and after the change are supported, storing the hash for this
file will cause an error during "make legal-info" when a kernel with the
respective other hash is being used.

So, for the kernel, we do like we did for ATF: the license file is only
listed for the latest version.

In the process, add the missing license files referenced from COPYING
and align the fields to the new spacing convention.

Signed-off-by: Markus Mayer <mmayer@broadcom.com>
[yann.morin.1998@free.fr:
  - only list the licenses files for the latest version
  - restore the hash for COPYING
  - introduce hashes for the two new license files
  - expand commit log accordingly
]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2020-02-06 11:46:46 +01:00
Peter Korsgaard
f0b208f125 linux/linux.mk: use HOST_MAKE_ENV rather than TARGET_MAKE_ENV
While the kernel is built for the target, the build may need various host
libraries depending on config (and kernel version), so use HOST_MAKE_ENV
instead of TARGET_MAKE_ENV.

In particular, this ensures that our host-pkgconf will look for host
libraries and not target ones.

Fixes building scripts/dtc for Buildroot configurations enabling libyaml and
host-pkgconf for kernels after commit 067c650c45 (dtc: Use pkg-config to
locate libyaml).

With this enabled, we can drop the PKG_CONFIG_* variables for the
_NEEDS_HOST_LIBELF conditional, as those are included in HOST_MAKE_ENV.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-02-02 21:02:28 +01:00
Yann E. MORIN
a1feef1a0d package/linux: fix LINUX_PKGDIR with br2-external linux-extensions
When 'make' includes a new Makefile, it appends its path to the MAKEFILE_LIST
variable. From that variable, we construct a few set of derivative
variables:
    pkgdir = $(dir $(lastword $(MAKEFILE_LIST)))
    pkgname = $(lastword $(subst /, ,$(pkgdir)))

Essentially, pkgdir is the full directory where the package is located
(either relative to Buildroot's top directory for in-tree packages, or
absolute for packages in br2-external trees), while pkgname is the last
component of that directory.

pkgdir is in turn used to seed FOO_PKGDIR.

This all happens when we eventually call the package-generic infra,
later down in the file.

When they are parsed, the Makefiles for each linux-extensions are
appended to MAKEFILE_LIST, after the linux.mk one. But since they are
located in the same directory as the main linux.mk, the last component
of MAKEFILE_LIST, which is no longer the main linux.mk, will still yield
the correct values for the linux package.

This is a tough assumption we made there and then.

When we added the support for br2-external linux extensions, we where
very cautious to explicitly scan them from a directory named 'linux', so
that this would yield the correct package name.

And that worked well so far, until someone needed to build an older
kernel, for which our conditional patch is needed, and which just
failed:

    /bin/bash: [...]/buildroot-external-linux-test/linux//0001-timeconst.pl-Eliminate-Perl-warning.patch.conditional: No such file or directory

When we scan linux extensions from a br2-external tree, the last
component of MAKEFILE_LIST is no longer in the same directory as the
main linux.mk, and thus the assumption above falls to pieces...

Again, when we added support for linux extensions from br2-external,
although we cared about the package name (pkgname), we completely missed
out on the package directory, and the LINUX_PKGDIR variable.

We do not have a very clean way out of this mess, but we have a nice
dirty trick: Scan the linux extensions from a br2-external tree before we
scan the in-tree ones. That way, the last component of MAKEFILE_LIST is
back to one that is in the same directory as the main linux.mk, and
we're back on tracks.

This is still very fragile, though, but short of a complete overhaul on
how packages are parsed and evaluated, this is the best we can come in
short order.

Reported-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Heiko Thiery <heiko.thiery@gmail.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Tested-by: Heiko Thiery <heiko.thiery@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2020-01-25 12:00:50 +01:00
Alexey Brodkin
d7a771816d linux: Set MMU page size for ARC processors
ARC processors have configurable size of MMU page. This configuration
happens during ASIC design and couldn't be changed in final silicone
not to mention runtime changes.

Given PAGE_SIZE macro is used a lot throughout the Linux kernel sources
we just hardcode a required value during the kernel configuration.

We used to support different MMU page sizes for ARC in Buildroot for
quite some time now but so far we only tweaked uClibc on the matter.
That left us with the kernel configured with whatever was in used defconfig.

In most of real cases that's OK because typically we're building firmware
for a particular ASIC which is supposed to have a unique kernel defconfig.
But if we're dealing with FPGA-based boards or even simlators like
Synopsys DesignWare nSIM or QEMU it's possible to have dfferent MMU page
size configured in that target mostly for the sake of testing.

And so we're trying to solve 2 problems here:
 1. Make sure both user-space (via libc settings) and the Linux kernel
    are "on the same page", i.e. expect to use the same MMU page size.
 2. Simplify process of testing different page sizes.
    As now we first need to set page size in Buildroot and then in the
    kernel via "make linux-configure" or via Kconfig fragment.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
[yann.morin.1998@free.fr: simplify the conditions]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2019-12-22 21:55:36 +01:00
Angelo Compagnucci
e9daff6249 linux: add option to select the CIP real-time kernel
This patch adds Linux CIP RT, the PREEMPT_RT real-time variant maintained
by the CIP team.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-11-26 22:55:10 +01:00
Angelo Compagnucci
988d604bb7 linux: change CIP kernel download method
Downloading from https a tarball is faster than cloning a git repo.
If needed, BR2_LINUX_KERNEL_CUSTOM_GIT can be used as a fallback
mechanism to downlad the CIP kernel with git.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-11-20 21:24:21 +01:00
Pierre-Jean Texier
1fe310e8d9 linux: fix indentation
Fixes:
 $: ./utils/check-package linux/*
 linux/linux.mk:528: expected indent with tabs
 1318 lines processed
 1 warnings generated

Signed-off-by: Pierre-Jean Texier <pjtexier@koncepto.io>
Acked-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-09-30 21:34:46 +02:00
McCabe, Robert J
c26eafa96c linux: allow br2-externals to provide their own Linux extensions
Signed-off-by: McCabe, Robert J <robert.mccabe@rockwellcollins.com>
Acked-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-09-28 22:12:04 +02:00
Christopher McCrory
133b7a1dd9 package/xtables-addons: bump to version 3.4
Add hash for LICENSE.

This version works with linux kernel 5.0 and newer. It requires
CONFIG_NF_NAT enabled in the kernel configuration, otherwise it fails
to build:

ERROR: "nf_nat_setup_info" [/home/thomas/projets/buildroot/output/build/xtables-addons-3.4/extensions/xt_DNETMAP.ko] undefined!

Signed-off-by: Christopher McCrory <chrismcc@gmail.com>
[Thomas: enable CONFIG_NF_NAT in the kernel configuration.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-09-15 21:25:39 +02:00
Titouan Christophe
78e596719f linux: Force CONFIG_NET=y when using mdev+devtempfs for /dev management
Since mdev was switched to the daemon mode introduced in Busybox 1.31.0,
it requires CONFIG_NET to be enabled in the kernel such that the mdev
daemon can listen to netlink events.

Signed-off-by: Titouan Christophe <titouan.christophe@railnova.eu>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2019-07-31 08:20:11 +02:00
Romain Naour
1713c3c344 linux: disable Werror for powerpc kernels
>From patch [1] included in kernel >= 5.0:
"The upcoming GCC 9 release extends the -Wmissing-attributes warnings
(enabled by -Wall) to C and aliases: it warns when particular function
attributes are missing in the aliases but not in their target.

In particular, it triggers for all the init/cleanup_module
aliases in the kernel (defined by the module_init/exit macros),
ending up being very noisy.

These aliases point to the __init/__exit functions of a module,
which are defined as __cold (among other attributes). However,
the aliases themselves do not have the __cold attribute.

Since the compiler behaves differently when compiling a __cold
function as well as when compiling paths leading to calls
to __cold functions, the warning is trying to point out
the possibly-forgotten attribute in the alias."

Werror is set by default while building ppc kernel [2], but
some warning can be introduced while building current kernel with
newer compiler (for example building kernel 4.19 with gcc 9.1).

For the same reason why we remove Werror in packages's compiler
flags. Building with Werror is not bulletproof when we start
using a newer compiler that introduce new warnings.
This is the case here.

Also this option is a bit strange since it's specific to ppc kernels:
"The intention is to make it harder for people to inadvertantly
introduce warnings in the arch/powerpc code."
Other kernel developers on other arch may be interested by a
similar/more generic option.

So, It's clearly intended for kernel developers.

Instead of backporting this patch [1] to kernel 4.19, select
unconditionally the Kconfig option CONFIG_PPC_DISABLE_WERROR
that allow to disable Werror.

Fixes:
https://gitlab.com/kubu93/toolchains-builder/-/jobs/205435741

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=a6e60d84989fa0e91db7f236eda40453b0e44afa
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=ba55bd74360ea4b8b95e73ed79474d37ff482b36
[3] https://gitlab.com/bootlin/toolchains-builder

Fix-suggested-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-06-22 21:00:34 +02:00
Peter Korsgaard
f26dc16ab4 linux: build after intel-microcode if enabled for early loading support
To support building in (a subset of) the intel-microcode files into the
kernel using the CONFIG_EXTRA_FIRMWARE option, we need to ensure that the
microcode files are installed before the Linux kernel is built.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2019-05-24 23:15:38 +02:00
Thomas Petazzoni
2a7cf511f4 linux: split calling "all" and "$(LINUX_TARGET_NAME)" targets
In commit ffbe46a529 ("linux: simplify
LINUX_BUILD_CMDS"), we changed LINUX_BUILD_CMDS to essentially do:

  make all $(LINUX_TARGET_NAME)

Unfortunately, it turns out that it breaks the build of a number of
defconfigs, with errors such as:

  fixdep: error opening file: arch/xtensa/boot/lib/.inftrees.o.d: No such file or directory

Calling "all" and "$(LINUX_TARGET_NAME)" as separate make invocations
avoids this problem, and fixes the build of several defconfigs.

Fixes:

  ts7680_defconfig
  https://gitlab.com/buildroot.org/buildroot/-/jobs/199339583

  qemu_xtensa_lx60_defconfig
  https://gitlab.com/buildroot.org/buildroot/-/jobs/199339553

  roseapplepi_defconfig
  https://gitlab.com/buildroot.org/buildroot/-/jobs/199339564

  qemu_xtensa_lx60_nommu_defconfig
  https://gitlab.com/buildroot.org/buildroot/-/jobs/199339554

  qemu_ppc64_e5500_defconfig
  https://gitlab.com/buildroot.org/buildroot/-/jobs/199339539

  freescale_t2080_qds_rdb_defconfig
  https://gitlab.com/buildroot.org/buildroot/-/jobs/199339455

  arcturus_ucp1020_defconfig
  https://gitlab.com/buildroot.org/buildroot/-/jobs/199339399

Cc: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Peter Korsgaard <peter@korsgaard.com>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[Thomas: add comment in the code to explain why we call the two make
targets separately, as suggested by Yann E. Morin]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-04-24 22:46:11 +02:00
Thomas Petazzoni
ffbe46a529 linux: simplify LINUX_BUILD_CMDS
We currently do the Linux build as follows:

   make <imagename>
   if modules enabled; make modules; fi

However, Clement Léger recently reported that due to us not using the
"all" target, the GDB scripts that the kernel can build when
CONFIG_GDB_SCRIPTS is enabled are not built, since upstream kernel
commit 67274c083438340ad16c1437caebc84e1253b224 (merged in v5.1) moved
that logic to a separate scripts_gdb target, which is a dependency of
the "all" target.

While we could add some more logic to explicit generate the
"scripts_gdb" target, this logic would fail on Linux < 5.1 for which
this make target doesn't exist.

So instead, let's simplify the build logic, and use:

  make all <imagename>

The "all" target automatically depends on "modules" if CONFIG_MODULES
is set, so we no longer need to explicit generate the "modules" target
separately.

As a result of this change, we may generate additional kernel images
compared to what was done previously, but such images would anyway not
be installed, and the additional build time is minimal.

We did some research as to why the kernel build was done like this in
Buildroot, and it's been like that since linux/linux.mk was added back
in 2010 by commit 487e21cff6 ("New,
simpler, infrastructure for building the Linux kernel").

Reported-by: Clément Leger <cleger@kalray.eu>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Reviewed-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
2019-04-13 17:15:19 +02:00
Stuart Summers
615e2edc2a linux: use host pkg-config when host libelf is set
A patch was added to the Linux kernel in 5.1.0-rc3 which adds a
requirement that the host build environment include pkg-config. Add the
correct host-pkgconf dependency and environment variables to ensure
Linux picks up the correct libraries.

Move the existing LINUX_MAKE_ENV assignment earlier, to simplify the
append-assignment in the libelf conditional block.

Fixes: #11761

Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Yann E. MORIN <yann.morin.1998@free.fr>
Suggested-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Stuart Summers <stuart.summers@intel.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
[Arnout: extend commit message as suggested by Yann]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
2019-04-13 17:07:10 +02:00
Arnout Vandecappelle (Essensium/Mind)
4ed7246a59 linux{, -headers}: support downloads of v5+
With the arrival of linux v5.0, we need yet another condition to set
_SITE correctly. Instead of continuing this madness, solve the problem
generically: use v2.6 for 2.6.*, and use the number before the first dot
in the other cases.

While we're at it, remove the comment which has been incorrect since
80d7b68167 (7 years ago).

Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tested-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Tested-by: Adam Duskett <aduskett@gmail.com>
Reviewed-by: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-03-14 22:13:47 +01:00
Yann E. MORIN
3ae8dab9e9 linux: don't check hashes for user-supplied patches
We have virtually no way to know the hashes for user-supplied patches,
so we should just ignore them.

Reported-by: Simon van der Veldt <simon.vanderveldt@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Peter Korsgaard <peter@korsgaard.com>
Tested-by: Simon van der Veldt <simon.vanderveldt@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2019-02-17 15:22:42 +01:00
Angelo Compagnucci
fb26b85b90 linux: bump Linux CIP to version v4.4.171-cip30
This patch bumps the Linux CIP version to v4.4.171-cip30 and updates the
download url to the new official one.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2019-02-05 17:33:18 +01:00
Titouan Christophe
eb37deb670 linux: add option to enable support for Device Tree overlays
Add an option to compile device trees in Linux with symbol generation
such that device tree overlays can be loaded on the target system

Signed-off-by: Titouan Christophe <titouan.christophe@railnova.eu>
[Arnout: remove "default n" and move setting of LINUX_MAKE_ENV to the
 place where the rest is set.]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
2019-02-03 20:27:41 +01:00
Thomas Petazzoni
71a31b2357 linux: use HOSTCC_NOCCACHE as kconfig HOSTCC
linux is a bit different than other kconfig-package, because it has
"toolchain" in KCONFIG_DEPENDENCIES. Thanks to this, host-ccache *is*
ready by the time kconfig invocations are made, so we could use
$(HOSTCC) as the host compiler for kconfig related operations.

However, for consistency with other kconfig-package packages, we chose
to use $(HOSTCC_NOCCACHE) as well.

We cannot rely on the default value of HOSTCC passed by the
kconfig-package infrastructure, because $(LINUX_MAKE_FLAGS) also
contains a HOSTCC definition that would override the one passed by the
kconfig-package infrastructure.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2019-01-16 23:39:28 +01:00
Carlos Santos
60eb2cec80 pcm-tools: new package
Processor Counter Monitor (PCM) is an application programming interface
(API) and a set of tools based on the API to monitor performance and
energy metrics of Intel(R) Core(TM), Xeon(R), Atom(TM) and Xeon Phi(TM)
processors.

This package contains a patch on the pmu-query.py script to look for the
pcm-core program at the default path. It's not nice to have a Buildroot
specific patch but let's use one while we look for a solution that is
acceptable upstream.

Signed-off-by: Carlos Santos <casantos@datacom.ind.br>
[Peter: Needs C++, force X86_MSR on in linux]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2018-12-08 10:44:05 +01:00
Yann E. MORIN
524fb10bbe linux: ensure images/ exist before creating files there
When using an initramfs, on the first-pass build, we create a dummy cpio
so that the build succeeeds. The real cpio will come later, and we'll do
a second-pass build to use the actual cpio.

However, when we touch that dummy cpio, the images/ directory may not
yet exist, since commit d0f4f95e39 (Makefile: rework main directory
creation logic) removed its creation at the begining of the build, to
only at the moment we need it, i.e. during the *_INSTALL_IMAGES_CMDS
steps.

However, the linux build is not a _INSTALL_IMAGES_CMDS step, so there is
no guarantee that images/ already exist at that time.

Fix that by explicitly creating images/ before touching the dummy cpio.

Reported-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Matthew Weber <matthew.weber@rockwellcollins.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Reviewed-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-12-06 21:51:23 +01:00
Peter Korsgaard
13c43455a0 Merge branch 'next'
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2018-12-02 08:16:10 +01:00
Andreas Naumann
860906ee05 linux: Make dtc install step more reliable
Checking for the existence of the dtc binary built by the
non-dependent dtc package may cause instable behaviour when giving more
freedom on the order of how the packages are built (parallelization).

In addidion, when moving to per-package host/target method, the check
would always trigger in the isolated host, leading to linux-dtc always
being installed as dtc.
This in turn may lead to undesired overwriting of the real host-dtc binary
when finally assembling the global host dir.

Thus rework the linux-dtc install condition to be defined by configuration
rather than compile time order.

Signed-off-by: Andreas Naumann <anaumann@ultratronik.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-11-23 22:18:57 +01:00
Carlos Santos
9ca59a6351 linux: enable MICROCODE_INTEL if intel-microcode is selected
We already turn on kernel features for several packages, so let's do it
for intel-microcode too, otherwise it's impossible to load the microcode
(by means of iucode-tools).

Signed-off-by: Carlos Santos <casantos@datacom.com.br>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2018-11-12 22:27:32 +01:00
Carlos Santos
2c828ed72f linux: enable CONFIG_AUDIT if the audit package is selected
We already turn on kernel features for several packages, so let's do it
for audit too, since the daemon is useless and fails to load otherwise.

Notice that we also turn NET on, since AUDIT depends on NET, like we do
for the wireguard package.

Signed-off-by: Carlos Santos <casantos@datacom.com.br>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-11-03 22:22:05 +01:00
Angelo Compagnucci
551e48a812 linux: add custom linux boot logo option
This patch adds a simple way to change the linux bootup logo.
The patch was kept purposely simple to support only the use cause
where a user needs a color linux boot up logo.

Signed-off-by: Angelo Compagnucci <angelo@amarulasolutions.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
[Peter: clarify/reword option/help text, automatically enable framebuffer
	support, fix convert path]
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2018-10-21 18:16:29 +02:00
Yann E. MORIN
3fc990a798 linux: kconfig needs the toolchain
Starting with linux-4.18, the kconfig from the kernel can call
to the compiler to test its capabilities; see:

    https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/scripts/Kconfig.include

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Jan Kundrát <jan.kundrat@cesnet.cz>
Tested-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Reviewed-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-08-20 16:02:27 +02:00
Yann E. MORIN
43ac3c8432 linux: host-{flex, bison} only needed for DTS
host-{flex,bison} are only needed to generate the dtc parser, so we
don't need them if the kernel does not have support for device tree.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-08-20 16:02:17 +02:00
Yann E. MORIN
b01100cc90 linux: kconfig may need host-{flex, bison} to build the configurators
Rely on the system provided ones if avalable, and only resort to use our
owns if the sytem does not provide them.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-08-20 16:02:10 +02:00
Yann E. MORIN
9ff4167c8c linux: explain why we need host-{flex, bison}
The commit that added the dependency on host-{bison,flex} did
so because the pre-generated kconfig parser source files were
removed from the kernel tree, in linux-4.16.

But then, in linux-4.17, the pre-generated dtc parser source
files were in turn removed as well.

So, document the two reasons why they are needed, so we don't
accidentally remove them when we (soon) introduce the kconfig
dependencies.

(Also fix the first assignment to LINUX_DEPENDENCIES to be a
simple assignement, not an append-assignment.)

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2018-08-18 23:08:45 +02:00