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initial buildroot for linux 5.15

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This commit is contained in:
Huan.Feng
2021-12-06 14:12:13 +08:00
parent d7767d594e
commit 7b6fc358fa
12736 changed files with 508822 additions and 0 deletions
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linux/0001-timeconst.pl-Eliminate-Perl-warning.patch.conditional
+45
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@@ -0,0 +1,45 @@
From 63a3f603413ffe82ad775f2d62a5afff87fd94a0 Mon Sep 17 00:00:00 2001
From: "H. Peter Anvin" <hpa@linux.intel.com>
Date: Thu, 7 Feb 2013 17:14:08 -0800
Subject: [PATCH] timeconst.pl: Eliminate Perl warning
defined(@array) is deprecated in Perl and gives off a warning.
Restructure the code to remove that warning.
[ hpa: it would be interesting to revert to the timeconst.bc script.
It appears that the failures reported by akpm during testing of
that script was due to a known broken version of make, not a problem
with bc. The Makefile rules could probably be restructured to avoid
the make bug, or it is probably old enough that it doesn't matter. ]
Reported-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Gustavo Zacarias <gustavo.zacarias@free-electrons.com>
---
Patch status: upstream
kernel/timeconst.pl | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/kernel/timeconst.pl b/kernel/timeconst.pl
index eb51d76..3f42652 100644
--- a/kernel/timeconst.pl
+++ b/kernel/timeconst.pl
@@ -369,10 +369,8 @@ if ($hz eq '--can') {
die "Usage: $0 HZ\n";
}
- @val = @{$canned_values{$hz}};
- if (!defined(@val)) {
- @val = compute_values($hz);
- }
+ $cv = $canned_values{$hz};
+ @val = defined($cv) ? @$cv : compute_values($hz);
output($hz, @val);
}
exit 0;
--
2.4.10
linux/Config.ext.in
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menu "Linux Kernel Extensions"
#-------------------------------------------------------------------------------
# Xenomai
config BR2_LINUX_KERNEL_EXT_XENOMAI
bool "Adeos/Xenomai Real-time patch"
depends on BR2_PACKAGE_XENOMAI_COBALT_ARCH_SUPPORTS
depends on BR2_USE_MMU # xenomai
depends on BR2_TOOLCHAIN_HAS_SYNC_4 # xenomai
depends on BR2_TOOLCHAIN_HAS_THREADS # xenomai
depends on !BR2_TOOLCHAIN_USES_MUSL # xenomai
select BR2_PACKAGE_XENOMAI
help
Xenomai is split in two parts: a kernel part and a userspace
part. Enabling this option automatically selects the Xenomai
package and helps in patching the Linux kernel built by
Buildroot with the Xenomai kernel part (ie Adeos/Ipipe).
You can find the currently supported kernel versions by
looking at the available patches in the Xenomai sources
tree: ksrc/arch/$(ARCH)/patches
However, it is recommended to use the latest version of the
Adeos/Ipipe patch available at
https://xenomai.org/downloads/ipipe/
Xenomai is know to support Blackfin, SH4, x86, ARM, NIOS2
and PowerPC architectures.
config BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH
string "Path/URL for Adeos patch file"
depends on BR2_LINUX_KERNEL_EXT_XENOMAI
help
Optionally, explicitly specify where to find the Adeos
patch to use.
Examples:
https://xenomai.org/downloads/ipipe/v4.x/arm/ipipe-core-4.19.33-arm-2.patch
or /home/foo/ipipe-core-4.19.33-arm-2.patch
Please verify that your kernel version in Buildroot matches.
comment "xenomai needs a uClibc or glibc toolchain w/ threads"
depends on BR2_PACKAGE_XENOMAI_COBALT_ARCH_SUPPORTS
depends on BR2_USE_MMU
depends on BR2_TOOLCHAIN_HAS_SYNC_4
depends on !BR2_TOOLCHAIN_HAS_THREADS || BR2_TOOLCHAIN_USES_MUSL
#-------------------------------------------------------------------------------
# RTAI
config BR2_LINUX_KERNEL_EXT_RTAI
bool "RTAI Real-time patch"
select BR2_PACKAGE_RTAI
help
RTAI Kernel part.
#-------------------------------------------------------------------------------
# ev3dev Linux drivers
config BR2_LINUX_KERNEL_EXT_EV3DEV_LINUX_DRIVERS
bool "ev3dev Linux drivers"
select BR2_PACKAGE_EV3DEV_LINUX_DRIVERS
help
Linux drivers for LEGO MINDSTORMS EV3 from the ev3dev project.
https://github.com/ev3dev/lego-linux-drivers
#-------------------------------------------------------------------------------
# fbtft
config BR2_LINUX_KERNEL_EXT_FBTFT
bool "FB TFT drivers"
select BR2_PACKAGE_FBTFT
help
Linux Framebuffer drivers for small TFT LCD display modules,
e.g. Adafruit PiTFT displays for Raspberry Pi (this extra
package is only needed for linux kernels until v3.19, since
v4.0 the drivers are included in the staging area).
To enable fbtft, e.g. for Adafruit 2.8 PiTFT, enable the
following kernel configurations:
- CONFIG_SPI
- CONFIG_GPIOLIB
- CONFIG_FB
- CONFIG_FB_TFT
- CONFIG_FB_TFT_ILI9341
https://github.com/notro/fbtft
# aufs-standalone
config BR2_LINUX_KERNEL_EXT_AUFS
bool "Aufs Filesystem Module patch"
select BR2_PACKAGE_AUFS
help
Aufs is split in two parts: a kernel part and a userspace
part. Enabling this option automatically selects the aufs
standalone (module) package and patches the Linux kernel
built by Buildroot with the aufs kernel part (ie fs/aufs).
It is important to use the correct branch of aufs-standalone.
if BR2_LINUX_KERNEL_EXT_AUFS
choice
bool "aufs-standalone series"
help
Select the major series of this version. This must match the
major version of your kernel (e.g. for kernels 3.x, select
aufs3.x; for kernels 4.x, select aufs4.x; for kernels 5.x,
select aufs5.x ).
Note: neither aufs1.x nor aufs2.x (both for kernels older than
3.x) are supported.
config BR2_LINUX_KERNEL_EXT_AUFS_SERIES_3
bool "aufs3.x"
config BR2_LINUX_KERNEL_EXT_AUFS_SERIES_4
bool "aufs4.x"
config BR2_LINUX_KERNEL_EXT_AUFS_SERIES_5
bool "aufs5.x"
endchoice
config BR2_LINUX_KERNEL_EXT_AUFS_SERIES
int
default 3 if BR2_LINUX_KERNEL_EXT_AUFS_SERIES_3
default 4 if BR2_LINUX_KERNEL_EXT_AUFS_SERIES_4
default 5 if BR2_LINUX_KERNEL_EXT_AUFS_SERIES_5
config BR2_LINUX_KERNEL_EXT_AUFS_VERSION
string "aufs-standalone version"
default ""
help
The version you choose must match that of your kernel.
Usually, the sha1 of the cset you want to use; avoid using a
branch name as this yields non-reproducible builds.
See the following resources to see what versions are
available:
For aufs3.x:
https://sourceforge.net/p/aufs/aufs3-standalone/ref/master/branches/
For aufs4.x:
https://github.com/sfjro/aufs4-standalone/branches/all
For aufs5.x:
https://github.com/sfjro/aufs5-standalone/branches/all
endif # aufs
endmenu
linux/Config.in
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menu "Kernel"
config BR2_LINUX_KERNEL
bool "Linux Kernel"
select BR2_PACKAGE_HOST_KMOD # Unconditional, even if modules not enabled
select BR2_PACKAGE_HOST_IMAGEMAGICK if BR2_LINUX_KERNEL_CUSTOM_LOGO_PATH != ""
help
Enable this option if you want to build a Linux kernel for
your embedded device
if BR2_LINUX_KERNEL
# Packages that need to have a kernel with support for loadable modules,
# but do not use the kernel-modules infrastructure, should select that
# option.
config BR2_LINUX_NEEDS_MODULES
bool
#
# Version selection. We provide the choice between:
#
# 1. A single fairly recent stable kernel version
# 2. A custom stable version
# 3. A custom tarball
# 4. A set of custom repository locations
#
choice
prompt "Kernel version"
config BR2_LINUX_KERNEL_LATEST_VERSION
bool "Latest version (5.15)"
config BR2_LINUX_KERNEL_LATEST_CIP_VERSION
bool "Latest CIP SLTS version (4.19.198-cip54)"
help
CIP launched in the spring of 2016 to address the needs of
organizations in industries such as power generation and
distribution, water, oil and gas, transportation, building
automation and more for reliable and secure Linux-based
embedded systems that can be sustained over a period of
10 to as many as 60 years.
The project's goal is to provide an open source base layer
of industrial-grade software that permits the use and
implementation of software building blocks that meet
these requirements.
The CIP community plans to maintain 4.19 for security and
bug fixes for more than 10 years.
https://www.cip-project.org
config BR2_LINUX_KERNEL_LATEST_CIP_RT_VERSION
bool "Latest CIP RT SLTS version (4.19.198-cip54-rt21)"
help
Same as the CIP version, but this is the PREEMPT_RT realtime
variant.
The CIP community plans to maintain 4.19 for security and
bug fixes for more than 10 years.
https://www.cip-project.org
config BR2_LINUX_KERNEL_CUSTOM_VERSION
bool "Custom version"
help
This option allows to use a specific official version from
kernel.org, like 2.6.x, 2.6.x.y, 3.x.y, ...
Note: you cannot use this option to select a _longterm_ 2.6
kernel, because these kernels are not located at the standard
URL at kernel.org. Instead, select "Custom tarball" and
specify the right URL directly.
config BR2_LINUX_KERNEL_CUSTOM_TARBALL
bool "Custom tarball"
help
This option allows to specify a URL pointing to a kernel
source tarball. This URL can use any protocol recognized by
Buildroot, like http://, ftp://, file:// or scp://.
When pointing to a local tarball using file://, you may want
to use a make variable like $(TOPDIR) to reference the root of
the Buildroot tree.
config BR2_LINUX_KERNEL_CUSTOM_GIT
bool "Custom Git repository"
help
This option allows Buildroot to get the Linux kernel source
code from a Git repository.
config BR2_LINUX_KERNEL_CUSTOM_HG
bool "Custom Mercurial repository"
help
This option allows Buildroot to get the Linux kernel source
code from a Mercurial repository.
config BR2_LINUX_KERNEL_CUSTOM_SVN
bool "Custom Subversion repository"
help
This option allows Buildroot to get the Linux kernel source
code from a Subversion repository.
endchoice
config BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE
string "Kernel version"
depends on BR2_LINUX_KERNEL_CUSTOM_VERSION
config BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION
string "URL of custom kernel tarball"
depends on BR2_LINUX_KERNEL_CUSTOM_TARBALL
if BR2_LINUX_KERNEL_CUSTOM_GIT || BR2_LINUX_KERNEL_CUSTOM_HG || BR2_LINUX_KERNEL_CUSTOM_SVN
config BR2_LINUX_KERNEL_CUSTOM_REPO_URL
string "URL of custom repository"
config BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION
string "Custom repository version"
help
Revision to use in the typical format used by
Git/Mercurial/Subversion E.G. a sha id, a tag, branch, ..
endif
config BR2_LINUX_KERNEL_VERSION
string
default "5.15.6" if BR2_LINUX_KERNEL_LATEST_VERSION
default "4.19.198-cip54" if BR2_LINUX_KERNEL_LATEST_CIP_VERSION
default "4.19.198-cip54-rt21" if BR2_LINUX_KERNEL_LATEST_CIP_RT_VERSION
default BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE \
if BR2_LINUX_KERNEL_CUSTOM_VERSION
default "custom" if BR2_LINUX_KERNEL_CUSTOM_TARBALL
default BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION \
if BR2_LINUX_KERNEL_CUSTOM_GIT || BR2_LINUX_KERNEL_CUSTOM_HG || BR2_LINUX_KERNEL_CUSTOM_SVN
#
# Patch selection
#
config BR2_LINUX_KERNEL_PATCH
string "Custom kernel patches"
help
A space-separated list of patches to apply to the
kernel. Each patch can be described as an URL, a local file
path, or a directory. In the case of a directory, all files
matching *.patch in the directory will be applied.
#
# Configuration selection
#
choice
prompt "Kernel configuration"
default BR2_LINUX_KERNEL_USE_DEFCONFIG
config BR2_LINUX_KERNEL_USE_DEFCONFIG
bool "Using an in-tree defconfig file"
config BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG
bool "Use the architecture default configuration"
help
This option will use the default configuration for the
selected architecture. I.e, it is equivalent to running
"make ARCH=<foo> defconfig". This is useful on architectures
that have a single defconfig file, such as ARM64.
config BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG
bool "Using a custom (def)config file"
endchoice
config BR2_LINUX_KERNEL_DEFCONFIG
string "Defconfig name"
depends on BR2_LINUX_KERNEL_USE_DEFCONFIG
help
Name of the kernel defconfig file to use, without the
trailing _defconfig. The defconfig is located in
arch/<arch>/configs in the kernel tree.
config BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE
string "Configuration file path"
depends on BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG
help
Path to the kernel configuration file
Note: this can be a defconfig file or a complete .config file,
which can later be saved back with make
linux-update-(def)config.
config BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES
string "Additional configuration fragment files"
help
A space-separated list of kernel configuration fragment files,
that will be merged to the main kernel configuration file.
config BR2_LINUX_KERNEL_CUSTOM_LOGO_PATH
string "Custom boot logo file path"
help
Use a custom Linux framebuffer boot logo.
Custom logo should be in PNG or JPEG format, it will be
converted to the linux kernel format (224 colors only)
and copied over the original logo file.
#
# Binary format
#
choice
prompt "Kernel binary format"
default BR2_LINUX_KERNEL_ZIMAGE if BR2_arm || BR2_armeb
config BR2_LINUX_KERNEL_UIMAGE
bool "uImage"
depends on BR2_arc || BR2_arm || BR2_armeb || \
BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le || \
BR2_sh || BR2_mips || BR2_mipsel || \
BR2_mips64 || BR2_mips64el || BR2_xtensa
select BR2_PACKAGE_HOST_UBOOT_TOOLS
config BR2_LINUX_KERNEL_APPENDED_UIMAGE
bool "uImage with appended DT"
depends on BR2_arm || BR2_armeb
select BR2_LINUX_KERNEL_DTS_SUPPORT
select BR2_LINUX_KERNEL_APPENDED_DTB
select BR2_PACKAGE_HOST_UBOOT_TOOLS
config BR2_LINUX_KERNEL_BZIMAGE
bool "bzImage"
depends on BR2_i386 || BR2_x86_64 || BR2_s390x
config BR2_LINUX_KERNEL_ZIMAGE
bool "zImage"
depends on BR2_arm || BR2_armeb || BR2_powerpc || \
BR2_powerpc64 || BR2_powerpc64le || BR2_sparc || \
BR2_sh || BR2_xtensa
config BR2_LINUX_KERNEL_ZIMAGE_EPAPR
bool "zImage.epapr"
depends on BR2_powerpc64 || BR2_powerpc64le
config BR2_LINUX_KERNEL_APPENDED_ZIMAGE
bool "zImage with appended DT"
depends on BR2_arm || BR2_armeb
select BR2_LINUX_KERNEL_DTS_SUPPORT
select BR2_LINUX_KERNEL_APPENDED_DTB
config BR2_LINUX_KERNEL_CUIMAGE
bool "cuImage"
depends on BR2_powerpc
select BR2_PACKAGE_HOST_UBOOT_TOOLS
select BR2_LINUX_KERNEL_DTS_SUPPORT
select BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT
config BR2_LINUX_KERNEL_SIMPLEIMAGE
bool "simpleImage"
depends on BR2_microblaze
select BR2_PACKAGE_HOST_UBOOT_TOOLS
select BR2_LINUX_KERNEL_DTS_SUPPORT
select BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT
config BR2_LINUX_KERNEL_IMAGE
bool "Image"
depends on BR2_aarch64 || BR2_riscv
config BR2_LINUX_KERNEL_IMAGEGZ
bool "Image.gz"
depends on BR2_aarch64 || BR2_riscv
config BR2_LINUX_KERNEL_LINUX_BIN
bool "linux.bin"
depends on BR2_microblaze
select BR2_PACKAGE_HOST_UBOOT_TOOLS
config BR2_LINUX_KERNEL_VMLINUX_BIN
bool "vmlinux.bin"
depends on BR2_mips || BR2_mipsel || BR2_sh
config BR2_LINUX_KERNEL_VMLINUX
bool "vmlinux"
config BR2_LINUX_KERNEL_VMLINUZ
bool "vmlinuz"
depends on BR2_mips || BR2_mipsel
config BR2_LINUX_KERNEL_VMLINUZ_BIN
bool "vmlinuz.bin"
depends on BR2_mips || BR2_mipsel
config BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM
bool "custom target"
help
For certain cases a board-specific target image must be
used. For example, on powerPC where the OpenFirmware
description is attached in a board-specific kernel image
target like 'cuImage.mpc8379_rdb'.
Select this option and specify the make target in "Kernel
image target name".
endchoice
#
# Kernel compression format
#
choice
prompt "Kernel compression format"
help
This selection will just ensure that the correct host tools
are built. The actual compression for the kernel should be
selected in the kernel configuration menu.
config BR2_LINUX_KERNEL_GZIP
bool "gzip compression"
config BR2_LINUX_KERNEL_LZ4
bool "lz4 compression"
config BR2_LINUX_KERNEL_LZMA
bool "lzma compression"
config BR2_LINUX_KERNEL_LZO
bool "lzo compression"
config BR2_LINUX_KERNEL_XZ
bool "xz compression"
config BR2_LINUX_KERNEL_ZSTD
bool "zstd compression"
config BR2_LINUX_KERNEL_UNCOMPRESSED
bool "uncompressed"
depends on BR2_s390x
endchoice
config BR2_LINUX_KERNEL_IMAGE_TARGET_NAME
string "Kernel image target name"
depends on BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM
help
Specify the kernel make target to build the kernel that you
need.
config BR2_LINUX_KERNEL_IMAGE_NAME
string "Kernel image name"
depends on BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM
help
The filename of the kernel image, if it is different from
the make target (above). Defaults to
BR2_LINUX_KERNEL_IMAGE_TARGET_NAME. If specified, the
filename is relative to arch/ARCH/boot/.
If unsure, leave it empty.
config BR2_LINUX_KERNEL_UIMAGE_LOADADDR
string "load address (for 3.7+ multi-platform image)"
depends on BR2_arm || BR2_armeb
depends on BR2_LINUX_KERNEL_UIMAGE || BR2_LINUX_KERNEL_APPENDED_UIMAGE
help
If your ARM system's Linux kernel is configured with the new
(3.7+) multi-architecture support (CONFIG_ARCH_MULTIPLATFORM=y
in your kernel config), then it is necessary to specify a
kernel load address when building the uImage. This should be a
hexadecimal string beginning with 0x, for example: 0x00008000.
If unsure, let this option empty.
config BR2_LINUX_KERNEL_DTS_SUPPORT
bool "Build a Device Tree Blob (DTB)"
help
Compile one or more device tree sources into device tree
blobs.
Select the dts files to compile in the options below.
if BR2_LINUX_KERNEL_DTS_SUPPORT
# We have mainly three cases when it comes to device tree support:
# 1) We don't want any support at all. Then the ..DTS_SUPPORT
# variable won't be set
# 2) We want device tree support, so we need the user to enter the
# device tree name or the path to the custom device he uses, but
# the kernel abstracts this from us and only build an image that
# looks like a regular kernel image. In this case, we only need
# to derive the kernel image name from the given device tree
# name, and all the rest is as usual
# 3) We want device tree support, but the kernel requires us to
# build the device tree blob separately. In this case, some
# more logic will be needed.
# The variable below address the second case, were you only want
# limited actions from buildroot.
config BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT
bool "DTB is built by kernel itself"
help
Normally, the device tree(s) to be built have to be passed
explicitly to the kernel build system. For some binary
formats, however, the kernel build system links in the
device tree directly in the kernel binary. Select this option
if you have such a kernel binary format.
config BR2_LINUX_KERNEL_APPENDED_DTB
bool
config BR2_LINUX_KERNEL_INTREE_DTS_NAME
string "In-tree Device Tree Source file names"
help
Name of in-tree device tree source file, without
the trailing .dts. You can provide a list of
dts files to build, separated by spaces.
config BR2_LINUX_KERNEL_CUSTOM_DTS_PATH
string "Out-of-tree Device Tree Source file paths"
help
Path to the out-of-tree device tree source files.
You can provide a list of dts paths to copy and
build, separated by spaces.
config BR2_LINUX_KERNEL_DTB_KEEP_DIRNAME
bool "Keep the directory name of the Device Tree"
help
If enabled, the device tree blobs keep their
directory prefixes when they get copied to the
output image directory or the target directory.
config BR2_LINUX_KERNEL_DTB_OVERLAY_SUPPORT
bool "Build Device Tree with overlay support"
help
If enabled, pass the "-@" option to dtc, such that
symbols are generated in the compiled Device Tree.
Choose this option to support Device Tree overlays
on the target system.
endif
config BR2_LINUX_KERNEL_INSTALL_TARGET
bool "Install kernel image to /boot in target"
depends on !BR2_TARGET_ROOTFS_INITRAMFS
help
Select this option to have the kernel image installed to
/boot in the target root filesystem, as is typically done on
x86/x86_64 systems.
Note that this option also installs the Device Tree Blobs to
/boot if DTBs have been generated by the kernel build
process.
config BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL
bool "Needs host OpenSSL"
help
Some Linux kernel configuration options (such as
CONFIG_SYSTEM_TRUSTED_KEYRING) require building a host
program called extract-cert, which itself needs
OpenSSL. Enabling this option will ensure host-openssl gets
built before the Linux kernel.
Enable this option if you get a Linux kernel build failure
such as "scripts/extract-cert.c:21:25: fatal error:
openssl/bio.h: No such file or directory".
config BR2_LINUX_KERNEL_NEEDS_HOST_LIBELF
bool "Needs host libelf"
help
Some Linux kernel configuration options (such as
CONFIG_UNWINDER_ORC) require building a host program that
needs libelf. Enabling this option will ensure host-elfutils
(which provides libelf) gets built before the Linux kernel.
Enable this option if you get a Linux kernel build failure
such as "Cannot generate ORC metadata for
CONFIG_UNWINDER_ORC=y, please install libelf-dev,
libelf-devel or elfutils-libelf-devel".
# Linux extensions
source "linux/Config.ext.in"
# Linux tools
source "package/linux-tools/Config.in"
endif # BR2_LINUX_KERNEL
endmenu
linux/linux-ext-aufs.mk
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################################################################################
#
# Patch the linux kernel with aufs extension
#
################################################################################
LINUX_EXTENSIONS += aufs
define AUFS_PREPARE_KERNEL
if test -d $(@D)/fs/aufs/; then \
echo "Your kernel already supports AUFS."; \
exit 1; \
fi
$(APPLY_PATCHES) $(@D) $(AUFS_DIR) \
aufs$(BR2_PACKAGE_AUFS_SERIES)-kbuild.patch \
aufs$(BR2_PACKAGE_AUFS_SERIES)-base.patch \
aufs$(BR2_PACKAGE_AUFS_SERIES)-mmap.patch \
aufs$(BR2_PACKAGE_AUFS_SERIES)-standalone.patch
cp -r $(AUFS_DIR)/fs/aufs/ $(@D)/fs/
cp $(AUFS_DIR)/include/uapi/linux/aufs_type.h $(@D)/include/uapi/linux/
endef
linux/linux-ext-ev3dev-linux-drivers.mk
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################################################################################
#
# Patch the linux kernel with ev3dev extension
#
################################################################################
LINUX_EXTENSIONS += ev3dev-linux-drivers
define EV3DEV_LINUX_DRIVERS_PREPARE_KERNEL
mkdir -p $(LINUX_DIR)/drivers/lego
cp -dpfr $(EV3DEV_LINUX_DRIVERS_DIR)/* $(LINUX_DIR)/drivers/lego/
endef
linux/linux-ext-fbtft.mk
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################################################################################
#
# Patch the linux kernel with fbtft extension
#
################################################################################
LINUX_EXTENSIONS += fbtft
# for linux >= 3.15 install to drivers/video/fbdev/fbtft
# for linux < 3.15 install to drivers/video/fbtft
define FBTFT_PREPARE_KERNEL
if [ -e $(LINUX_DIR)/drivers/video/fbdev ]; then \
dest=drivers/video/fbdev ; \
else \
dest=drivers/video ; \
fi ; \
mkdir -p $(LINUX_DIR)/$${dest}/fbtft; \
cp -dpfr $(FBTFT_DIR)/* $(LINUX_DIR)/$${dest}/fbtft/ ; \
echo "source \"$${dest}/fbtft/Kconfig\"" \
>> $(LINUX_DIR)/$${dest}/Kconfig ; \
echo 'obj-y += fbtft/' >> $(LINUX_DIR)/$${dest}/Makefile
endef
linux/linux-ext-rtai.mk
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################################################################################
#
# Patch the linux kernel with RTAI extension
#
################################################################################
LINUX_EXTENSIONS += rtai
ifeq ($(KERNEL_ARCH),i386)
RTAI_ARCH = x86
else ifeq ($(KERNEL_ARCH),x86_64)
RTAI_ARCH = x86
else ifeq ($(KERNEL_ARCH),powerpc)
RTAI_ARCH = ppc
else
RTAI_ARCH = $(KERNEL_ARCH)
endif
# Prepare kernel patch
define RTAI_PREPARE_KERNEL
kver=`$(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) --no-print-directory -s kernelversion` ; \
if test -f $(RTAI_DIR)/base/arch/$(RTAI_ARCH)/patches/hal-linux-$${kver}-*patch ; then \
$(APPLY_PATCHES) $(LINUX_DIR) \
$(RTAI_DIR)/base/arch/$(RTAI_ARCH)/patches/ \
hal-linux-$${kver}-*patch ; \
else \
echo "No RTAI patch for your kernel version" ; \
exit 1 ; \
fi
endef
linux/linux-ext-xenomai.mk
+35
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@@ -0,0 +1,35 @@
################################################################################
#
# Patch the linux kernel with Adeos/Xenomai extension
#
################################################################################
LINUX_EXTENSIONS += xenomai
# Adeos patch version
XENOMAI_ADEOS_PATCH = $(call qstrip,$(BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH))
ifneq ($(filter ftp://% http://% https://%,$(XENOMAI_ADEOS_PATCH)),)
XENOMAI_ADEOS_PATCH_NAME = $(notdir $(XENOMAI_ADEOS_PATCH))
XENOMAI_ADEOS_PATCH_PATH = $(LINUX_DL_DIR)/$(XENOMAI_ADEOS_PATCH_NAME)
# check-package TypoInPackageVariable
LINUX_EXTRA_DOWNLOADS += $(XENOMAI_ADEOS_PATCH)
BR_NO_CHECK_HASH_FOR += $(XENOMAI_ADEOS_PATCH_NAME)
else
XENOMAI_ADEOS_PATCH_PATH = $(XENOMAI_ADEOS_PATCH)
endif
ifeq ($(XENOMAI_ADEOS_PATCH),)
XENOMAI_ADEOS_OPTS = --default
else
XENOMAI_ADEOS_OPTS = --adeos=$(XENOMAI_ADEOS_PATCH_PATH)
endif
# Prepare kernel patch
define XENOMAI_PREPARE_KERNEL
$(XENOMAI_DIR)/scripts/prepare-kernel.sh \
--linux=$(LINUX_DIR) \
--arch=$(KERNEL_ARCH) \
$(XENOMAI_ADEOS_OPTS) \
--verbose
endef
linux/linux.hash
+18
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@@ -0,0 +1,18 @@
# From https://www.kernel.org/pub/linux/kernel/v5.x/sha256sums.asc
sha256 b3e9ba06a299a3e2ead4a15753bc46a3e0c90d3b92ffeed1034ccc9f13a717f0 linux-5.15.6.tar.xz
sha256 f41a259cb2002dd2e3286524b2bb4e803f4f982992d092706ecea613584023b3 linux-5.14.21.tar.xz
sha256 ef259a43f33ddb56001283f4f4e50af29b8a48fa066aed7371a90ebf38c29b70 linux-5.10.83.tar.xz
sha256 6246fe1776d83039d71f74eb839f38ebdec23e1b37a7bf76f3bce13cbf0290be linux-5.4.163.tar.xz
# From https://www.kernel.org/pub/linux/kernel/v4.x/sha256sums.asc
sha256 6d2f83619493e656276dbf22afcdb80f42320e697570419380773bb4916130fd linux-4.4.293.tar.xz
sha256 b55d77774ed631f57f736bcdab021f68167455c9daede7e9e4161b4d564d8b53 linux-4.9.291.tar.xz
sha256 9784204f95cfc7de1c933088e6f9364e99a29988ae4e6b9353677637eb171aa0 linux-4.14.256.tar.xz
sha256 8f4ecd71fbcdd733c2849e2e5afe59d351c463c9a699bdbf428d88fa911009db linux-4.19.219.tar.xz
# Locally computed
sha256 e6fc0a999a180ad272b08ff71cbc67f2d3fdc6773d4a8069aefb8781b8e07821 linux-cip-4.19.198-cip54.tar.gz
sha256 449668d678e458ddaf30f944b7ca7f5ce6ea6664f57d43ea4eb90b176e03b9cb linux-cip-4.19.198-cip54-rt21.tar.gz
# Licenses hashes
sha256 fb5a425bd3b3cd6071a3a9aff9909a859e7c1158d54d32e07658398cd67eb6a0 COPYING
sha256 f6b78c087c3ebdf0f3c13415070dd480a3f35d8fc76f3d02180a407c1c812f79 LICENSES/preferred/GPL-2.0
sha256 8e378ab93586eb55135d3bc119cce787f7324f48394777d00c34fa3d0be3303f LICENSES/exceptions/Linux-syscall-note
linux/linux.mk
+585
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@@ -0,0 +1,585 @@
################################################################################
#
# Linux kernel target
#
################################################################################
LINUX_VERSION = $(call qstrip,$(BR2_LINUX_KERNEL_VERSION))
LINUX_LICENSE = GPL-2.0
ifeq ($(BR2_LINUX_KERNEL_LATEST_VERSION),y)
LINUX_LICENSE_FILES = \
COPYING \
LICENSES/preferred/GPL-2.0 \
LICENSES/exceptions/Linux-syscall-note
endif
LINUX_CPE_ID_VENDOR = linux
LINUX_CPE_ID_PRODUCT = linux_kernel
LINUX_CPE_ID_PREFIX = cpe:2.3:o
# Compute LINUX_SOURCE and LINUX_SITE from the configuration
ifeq ($(BR2_LINUX_KERNEL_CUSTOM_TARBALL),y)
LINUX_TARBALL = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION))
LINUX_SITE = $(patsubst %/,%,$(dir $(LINUX_TARBALL)))
LINUX_SOURCE = $(notdir $(LINUX_TARBALL))
else ifeq ($(BR2_LINUX_KERNEL_CUSTOM_GIT),y)
LINUX_SITE = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_REPO_URL))
LINUX_SITE_METHOD = git
else ifeq ($(BR2_LINUX_KERNEL_CUSTOM_HG),y)
LINUX_SITE = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_REPO_URL))
LINUX_SITE_METHOD = hg
else ifeq ($(BR2_LINUX_KERNEL_CUSTOM_SVN),y)
LINUX_SITE = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_REPO_URL))
LINUX_SITE_METHOD = svn
else ifeq ($(BR2_LINUX_KERNEL_LATEST_CIP_VERSION)$(BR2_LINUX_KERNEL_LATEST_CIP_RT_VERSION),y)
LINUX_SOURCE = linux-cip-$(LINUX_VERSION).tar.gz
LINUX_SITE = https://git.kernel.org/pub/scm/linux/kernel/git/cip/linux-cip.git/snapshot
else ifneq ($(findstring -rc,$(LINUX_VERSION)),)
# Since 4.12-rc1, -rc kernels are generated from cgit. This also works for
# older -rc kernels.
LINUX_SITE = https://git.kernel.org/torvalds/t
else
LINUX_SOURCE = linux-$(LINUX_VERSION).tar.xz
ifeq ($(findstring x2.6.,x$(LINUX_VERSION)),x2.6.)
LINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v2.6
else
LINUX_SITE = $(BR2_KERNEL_MIRROR)/linux/kernel/v$(firstword $(subst ., ,$(LINUX_VERSION))).x
endif
endif
ifeq ($(BR2_LINUX_KERNEL)$(BR2_LINUX_KERNEL_LATEST_VERSION),y)
BR_NO_CHECK_HASH_FOR += $(LINUX_SOURCE)
endif
LINUX_PATCHES = $(call qstrip,$(BR2_LINUX_KERNEL_PATCH))
# We have no way to know the hashes for user-supplied patches.
BR_NO_CHECK_HASH_FOR += $(notdir $(LINUX_PATCHES))
# We rely on the generic package infrastructure to download and apply
# remote patches (downloaded from ftp, http or https). For local
# patches, we can't rely on that infrastructure, because there might
# be directories in the patch list (unlike for other packages).
LINUX_PATCH = $(filter ftp://% http://% https://%,$(LINUX_PATCHES))
# while the kernel is built for the target, the build may need various
# host libraries depending on config (and version), so use
# HOST_MAKE_ENV here. In particular, this ensures that our
# host-pkgconf will look for host libraries and not target ones.
LINUX_MAKE_ENV = \
$(HOST_MAKE_ENV) \
BR_BINARIES_DIR=$(BINARIES_DIR)
LINUX_INSTALL_IMAGES = YES
LINUX_DEPENDENCIES = host-kmod \
$(if $(BR2_PACKAGE_INTEL_MICROCODE),intel-microcode) \
$(if $(BR2_PACKAGE_LINUX_FIRMWARE),linux-firmware)
# Starting with 4.16, the generated kconfig paser code is no longer
# shipped with the kernel sources, so we need flex and bison, but
# only if the host does not have them.
LINUX_KCONFIG_DEPENDENCIES = \
$(BR2_BISON_HOST_DEPENDENCY) \
$(BR2_FLEX_HOST_DEPENDENCY)
# Starting with 4.18, the kconfig in the kernel calls the
# cross-compiler to check its capabilities. So we need the
# toolchain before we can call the configurators.
LINUX_KCONFIG_DEPENDENCIES += toolchain
# host tools needed for kernel compression
ifeq ($(BR2_LINUX_KERNEL_LZ4),y)
LINUX_DEPENDENCIES += host-lz4
else ifeq ($(BR2_LINUX_KERNEL_LZMA),y)
LINUX_DEPENDENCIES += host-lzma
else ifeq ($(BR2_LINUX_KERNEL_LZO),y)
LINUX_DEPENDENCIES += host-lzop
else ifeq ($(BR2_LINUX_KERNEL_XZ),y)
LINUX_DEPENDENCIES += host-xz
else ifeq ($(BR2_LINUX_KERNEL_ZSTD),y)
LINUX_DEPENDENCIES += host-zstd
endif
LINUX_COMPRESSION_OPT_$(BR2_LINUX_KERNEL_GZIP) += CONFIG_KERNEL_GZIP
LINUX_COMPRESSION_OPT_$(BR2_LINUX_KERNEL_LZ4) += CONFIG_KERNEL_LZ4
LINUX_COMPRESSION_OPT_$(BR2_LINUX_KERNEL_LZMA) += CONFIG_KERNEL_LZMA
LINUX_COMPRESSION_OPT_$(BR2_LINUX_KERNEL_LZO) += CONFIG_KERNEL_LZO
LINUX_COMPRESSION_OPT_$(BR2_LINUX_KERNEL_XZ) += CONFIG_KERNEL_XZ
LINUX_COMPRESSION_OPT_$(BR2_LINUX_KERNEL_ZSTD) += CONFIG_KERNEL_ZSTD
LINUX_COMPRESSION_OPT_$(BR2_LINUX_KERNEL_UNCOMPRESSED) += CONFIG_KERNEL_UNCOMPRESSED
ifeq ($(BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL),y)
LINUX_DEPENDENCIES += host-openssl
endif
ifeq ($(BR2_LINUX_KERNEL_NEEDS_HOST_LIBELF),y)
LINUX_DEPENDENCIES += host-elfutils host-pkgconf
endif
# If host-uboot-tools is selected by the user, assume it is needed to
# create a custom image
ifeq ($(BR2_PACKAGE_HOST_UBOOT_TOOLS),y)
LINUX_DEPENDENCIES += host-uboot-tools
endif
ifneq ($(ARCH_XTENSA_OVERLAY_FILE),)
define LINUX_XTENSA_OVERLAY_EXTRACT
$(call arch-xtensa-overlay-extract,$(@D),linux)
endef
LINUX_POST_EXTRACT_HOOKS += LINUX_XTENSA_OVERLAY_EXTRACT
LINUX_EXTRA_DOWNLOADS += $(ARCH_XTENSA_OVERLAY_URL)
endif
# We don't want to run depmod after installing the kernel. It's done in a
# target-finalize hook, to encompass modules installed by packages.
LINUX_MAKE_FLAGS = \
HOSTCC="$(HOSTCC) $(HOST_CFLAGS) $(HOST_LDFLAGS)" \
ARCH=$(KERNEL_ARCH) \
INSTALL_MOD_PATH=$(TARGET_DIR) \
CROSS_COMPILE="$(TARGET_CROSS)" \
DEPMOD=$(HOST_DIR)/sbin/depmod
ifeq ($(BR2_REPRODUCIBLE),y)
LINUX_MAKE_ENV += \
KBUILD_BUILD_VERSION=1 \
KBUILD_BUILD_USER=buildroot \
KBUILD_BUILD_HOST=buildroot \
KBUILD_BUILD_TIMESTAMP="$(shell LC_ALL=C date -d @$(SOURCE_DATE_EPOCH))"
endif
# gcc-8 started warning about function aliases that have a
# non-matching prototype. This seems rather useful in general, but it
# causes tons of warnings in the Linux kernel, where we rely on
# abusing those aliases for system call entry points, in order to
# sanitize the arguments passed from user space in registers.
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82435
ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_8),y)
LINUX_MAKE_ENV += KCFLAGS=-Wno-attribute-alias
endif
ifeq ($(BR2_LINUX_KERNEL_DTB_OVERLAY_SUPPORT),y)
LINUX_MAKE_ENV += DTC_FLAGS=-@
endif
# Get the real Linux version, which tells us where kernel modules are
# going to be installed in the target filesystem.
# Filter out 'w' from MAKEFLAGS, to workaround a bug in make 4.1 (#13141)
LINUX_VERSION_PROBED = `MAKEFLAGS='$(filter-out w,$(MAKEFLAGS))' $(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) --no-print-directory -s kernelrelease 2>/dev/null`
LINUX_DTS_NAME += $(call qstrip,$(BR2_LINUX_KERNEL_INTREE_DTS_NAME))
# We keep only the .dts files, so that the user can specify both .dts
# and .dtsi files in BR2_LINUX_KERNEL_CUSTOM_DTS_PATH. Both will be
# copied to arch/<arch>/boot/dts, but only the .dts files will
# actually be generated as .dtb.
LINUX_DTS_NAME += $(basename $(filter %.dts,$(notdir $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_DTS_PATH)))))
LINUX_DTBS = $(addsuffix .dtb,$(LINUX_DTS_NAME))
ifeq ($(BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM),y)
LINUX_IMAGE_NAME = $(call qstrip,$(BR2_LINUX_KERNEL_IMAGE_NAME))
LINUX_TARGET_NAME = $(call qstrip,$(BR2_LINUX_KERNEL_IMAGE_TARGET_NAME))
ifeq ($(LINUX_IMAGE_NAME),)
LINUX_IMAGE_NAME = $(LINUX_TARGET_NAME)
endif
else
ifeq ($(BR2_LINUX_KERNEL_UIMAGE),y)
LINUX_IMAGE_NAME = uImage
else ifeq ($(BR2_LINUX_KERNEL_APPENDED_UIMAGE),y)
LINUX_IMAGE_NAME = uImage
else ifeq ($(BR2_LINUX_KERNEL_BZIMAGE),y)
LINUX_IMAGE_NAME = bzImage
else ifeq ($(BR2_LINUX_KERNEL_ZIMAGE),y)
LINUX_IMAGE_NAME = zImage
else ifeq ($(BR2_LINUX_KERNEL_ZIMAGE_EPAPR),y)
LINUX_IMAGE_NAME = zImage.epapr
else ifeq ($(BR2_LINUX_KERNEL_APPENDED_ZIMAGE),y)
LINUX_IMAGE_NAME = zImage
else ifeq ($(BR2_LINUX_KERNEL_CUIMAGE),y)
LINUX_IMAGE_NAME = cuImage.$(firstword $(LINUX_DTS_NAME))
else ifeq ($(BR2_LINUX_KERNEL_SIMPLEIMAGE),y)
LINUX_IMAGE_NAME = simpleImage.$(firstword $(LINUX_DTS_NAME))
else ifeq ($(BR2_LINUX_KERNEL_IMAGE),y)
LINUX_IMAGE_NAME = Image
else ifeq ($(BR2_LINUX_KERNEL_IMAGEGZ),y)
LINUX_IMAGE_NAME = Image.gz
else ifeq ($(BR2_LINUX_KERNEL_LINUX_BIN),y)
LINUX_IMAGE_NAME = linux.bin
else ifeq ($(BR2_LINUX_KERNEL_VMLINUX_BIN),y)
LINUX_IMAGE_NAME = vmlinux.bin
else ifeq ($(BR2_LINUX_KERNEL_VMLINUX),y)
LINUX_IMAGE_NAME = vmlinux
else ifeq ($(BR2_LINUX_KERNEL_VMLINUZ),y)
LINUX_IMAGE_NAME = vmlinuz
else ifeq ($(BR2_LINUX_KERNEL_VMLINUZ_BIN),y)
LINUX_IMAGE_NAME = vmlinuz.bin
endif
# The if-else blocks above are all the image types we know of, and all
# come from a Kconfig choice, so we know we have LINUX_IMAGE_NAME set
# to something
LINUX_TARGET_NAME = $(LINUX_IMAGE_NAME)
endif
LINUX_KERNEL_UIMAGE_LOADADDR = $(call qstrip,$(BR2_LINUX_KERNEL_UIMAGE_LOADADDR))
ifneq ($(LINUX_KERNEL_UIMAGE_LOADADDR),)
LINUX_MAKE_FLAGS += LOADADDR="$(LINUX_KERNEL_UIMAGE_LOADADDR)"
endif
# Compute the arch path, since i386 and x86_64 are in arch/x86 and not
# in arch/$(KERNEL_ARCH). Even if the kernel creates symbolic links
# for bzImage, arch/i386 and arch/x86_64 do not exist when copying the
# defconfig file.
ifeq ($(KERNEL_ARCH),i386)
LINUX_ARCH_PATH = $(LINUX_DIR)/arch/x86
else ifeq ($(KERNEL_ARCH),x86_64)
LINUX_ARCH_PATH = $(LINUX_DIR)/arch/x86
else
LINUX_ARCH_PATH = $(LINUX_DIR)/arch/$(KERNEL_ARCH)
endif
ifeq ($(BR2_LINUX_KERNEL_VMLINUX),y)
LINUX_IMAGE_PATH = $(LINUX_DIR)/$(LINUX_IMAGE_NAME)
else ifeq ($(BR2_LINUX_KERNEL_VMLINUZ),y)
LINUX_IMAGE_PATH = $(LINUX_DIR)/$(LINUX_IMAGE_NAME)
else ifeq ($(BR2_LINUX_KERNEL_VMLINUZ_BIN),y)
LINUX_IMAGE_PATH = $(LINUX_DIR)/$(LINUX_IMAGE_NAME)
else
LINUX_IMAGE_PATH = $(LINUX_ARCH_PATH)/boot/$(LINUX_IMAGE_NAME)
endif # BR2_LINUX_KERNEL_VMLINUX
define LINUX_APPLY_LOCAL_PATCHES
for p in $(filter-out ftp://% http://% https://%,$(LINUX_PATCHES)) ; do \
if test -d $$p ; then \
$(APPLY_PATCHES) $(@D) $$p \*.patch || exit 1 ; \
else \
$(APPLY_PATCHES) $(@D) `dirname $$p` `basename $$p` || exit 1; \
fi \
done
endef
LINUX_POST_PATCH_HOOKS += LINUX_APPLY_LOCAL_PATCHES
# Older linux kernels use deprecated perl constructs in timeconst.pl
# that were removed for perl 5.22+ so it breaks on newer distributions
# Try a dry-run patch to see if this applies, if it does go ahead
define LINUX_TRY_PATCH_TIMECONST
@if patch -p1 --dry-run -f -s -d $(@D) <$(LINUX_PKGDIR)/0001-timeconst.pl-Eliminate-Perl-warning.patch.conditional >/dev/null ; then \
$(APPLY_PATCHES) $(@D) $(LINUX_PKGDIR) 0001-timeconst.pl-Eliminate-Perl-warning.patch.conditional ; \
fi
endef
LINUX_POST_PATCH_HOOKS += LINUX_TRY_PATCH_TIMECONST
LINUX_KERNEL_CUSTOM_LOGO_PATH = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_LOGO_PATH))
ifneq ($(LINUX_KERNEL_CUSTOM_LOGO_PATH),)
LINUX_DEPENDENCIES += host-imagemagick
define LINUX_KERNEL_CUSTOM_LOGO_CONVERT
$(HOST_DIR)/bin/convert $(LINUX_KERNEL_CUSTOM_LOGO_PATH) \
-dither None -colors 224 -compress none \
$(LINUX_DIR)/drivers/video/logo/logo_linux_clut224.ppm
endef
LINUX_PRE_BUILD_HOOKS += LINUX_KERNEL_CUSTOM_LOGO_CONVERT
endif
ifeq ($(BR2_LINUX_KERNEL_USE_DEFCONFIG),y)
LINUX_KCONFIG_DEFCONFIG = $(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG))_defconfig
else ifeq ($(BR2_LINUX_KERNEL_USE_ARCH_DEFAULT_CONFIG),y)
LINUX_KCONFIG_DEFCONFIG = defconfig
else ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG),y)
LINUX_KCONFIG_FILE = $(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE))
endif
LINUX_KCONFIG_FRAGMENT_FILES = $(call qstrip,$(BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES))
LINUX_KCONFIG_EDITORS = menuconfig xconfig gconfig nconfig
# LINUX_MAKE_FLAGS overrides HOSTCC to allow the kernel build to find
# our host-openssl and host-libelf. However, this triggers a bug in
# the kconfig build script that causes it to build with
# /usr/include/ncurses.h (which is typically wchar) but link with
# $(HOST_DIR)/lib/libncurses.so (which is not). We don't actually
# need any host-package for kconfig, so remove the HOSTCC override
# again. In addition, even though linux depends on the toolchain and
# therefore host-ccache would be ready, we use HOSTCC_NOCCACHE for
# consistency with other kconfig packages.
LINUX_KCONFIG_OPTS = $(LINUX_MAKE_FLAGS) HOSTCC="$(HOSTCC_NOCCACHE)"
# If no package has yet set it, set it from the Kconfig option
LINUX_NEEDS_MODULES ?= $(BR2_LINUX_NEEDS_MODULES)
# Make sure the Linux kernel is built with the right endianness. Not
# all architectures support
# CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN in Linux, but the
# option will be thrown away and ignored if it doesn't exist.
ifeq ($(BR2_ENDIAN),"BIG")
define LINUX_FIXUP_CONFIG_ENDIANNESS
$(call KCONFIG_ENABLE_OPT,CONFIG_CPU_BIG_ENDIAN)
endef
else
define LINUX_FIXUP_CONFIG_ENDIANNESS
$(call KCONFIG_ENABLE_OPT,CONFIG_CPU_LITTLE_ENDIAN)
endef
endif
define LINUX_KCONFIG_FIXUP_CMDS
$(if $(LINUX_NEEDS_MODULES),
$(call KCONFIG_ENABLE_OPT,CONFIG_MODULES))
$(call KCONFIG_ENABLE_OPT,$(strip $(LINUX_COMPRESSION_OPT_y)))
$(foreach opt, $(LINUX_COMPRESSION_OPT_),
$(call KCONFIG_DISABLE_OPT,$(opt))
)
$(LINUX_FIXUP_CONFIG_ENDIANNESS)
$(if $(BR2_arm)$(BR2_armeb),
$(call KCONFIG_ENABLE_OPT,CONFIG_AEABI))
$(if $(BR2_powerpc)$(BR2_powerpc64)$(BR2_powerpc64le),
$(call KCONFIG_ENABLE_OPT,CONFIG_PPC_DISABLE_WERROR))
$(if $(BR2_ARC_PAGE_SIZE_4K),
$(call KCONFIG_ENABLE_OPT,CONFIG_ARC_PAGE_SIZE_4K)
$(call KCONFIG_DISABLE_OPT,CONFIG_ARC_PAGE_SIZE_8K)
$(call KCONFIG_DISABLE_OPT,CONFIG_ARC_PAGE_SIZE_16K))
$(if $(BR2_ARC_PAGE_SIZE_8K),
$(call KCONFIG_DISABLE_OPT,CONFIG_ARC_PAGE_SIZE_4K)
$(call KCONFIG_ENABLE_OPT,CONFIG_ARC_PAGE_SIZE_8K)
$(call KCONFIG_DISABLE_OPT,CONFIG_ARC_PAGE_SIZE_16K))
$(if $(BR2_ARC_PAGE_SIZE_16K),
$(call KCONFIG_DISABLE_OPT,CONFIG_ARC_PAGE_SIZE_4K)
$(call KCONFIG_DISABLE_OPT,CONFIG_ARC_PAGE_SIZE_8K)
$(call KCONFIG_ENABLE_OPT,CONFIG_ARC_PAGE_SIZE_16K))
$(if $(BR2_TARGET_ROOTFS_CPIO),
$(call KCONFIG_ENABLE_OPT,CONFIG_BLK_DEV_INITRD))
# As the kernel gets compiled before root filesystems are
# built, we create a fake cpio file. It'll be
# replaced later by the real cpio archive, and the kernel will be
# rebuilt using the linux-rebuild-with-initramfs target.
$(if $(BR2_TARGET_ROOTFS_INITRAMFS),
mkdir -p $(BINARIES_DIR)
touch $(BINARIES_DIR)/rootfs.cpio
$(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_SOURCE,"$${BR_BINARIES_DIR}/rootfs.cpio")
$(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_ROOT_UID,0)
$(call KCONFIG_SET_OPT,CONFIG_INITRAMFS_ROOT_GID,0))
$(if $(BR2_ROOTFS_DEVICE_CREATION_STATIC),,
$(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS)
$(call KCONFIG_ENABLE_OPT,CONFIG_DEVTMPFS_MOUNT))
$(if $(BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV),
$(call KCONFIG_ENABLE_OPT,CONFIG_INOTIFY_USER))
$(if $(BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_MDEV),
$(call KCONFIG_ENABLE_OPT,CONFIG_NET))
$(if $(BR2_LINUX_KERNEL_APPENDED_DTB),
$(call KCONFIG_ENABLE_OPT,CONFIG_ARM_APPENDED_DTB))
$(if $(LINUX_KERNEL_CUSTOM_LOGO_PATH),
$(call KCONFIG_ENABLE_OPT,CONFIG_FB)
$(call KCONFIG_ENABLE_OPT,CONFIG_LOGO)
$(call KCONFIG_ENABLE_OPT,CONFIG_LOGO_LINUX_CLUT224))
$(call KCONFIG_DISABLE_OPT,CONFIG_GCC_PLUGINS)
$(PACKAGES_LINUX_CONFIG_FIXUPS)
endef
ifeq ($(BR2_LINUX_KERNEL_DTS_SUPPORT),y)
# Starting with 4.17, the generated dtc parser code is no longer
# shipped with the kernel sources, so we need flex and bison. For
# reproducibility, we use our owns rather than the host ones.
LINUX_DEPENDENCIES += host-bison host-flex
ifeq ($(BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT),)
define LINUX_BUILD_DTB
$(LINUX_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) $(LINUX_DTBS)
endef
ifeq ($(BR2_LINUX_KERNEL_APPENDED_DTB),)
define LINUX_INSTALL_DTB
# dtbs moved from arch/<ARCH>/boot to arch/<ARCH>/boot/dts since 3.8-rc1
$(foreach dtb,$(LINUX_DTBS), \
install -D \
$(or $(wildcard $(LINUX_ARCH_PATH)/boot/dts/$(dtb)),$(LINUX_ARCH_PATH)/boot/$(dtb)) \
$(1)/$(if $(BR2_LINUX_KERNEL_DTB_KEEP_DIRNAME),$(dtb),$(notdir $(dtb)))
)
endef
endif # BR2_LINUX_KERNEL_APPENDED_DTB
endif # BR2_LINUX_KERNEL_DTB_IS_SELF_BUILT
endif # BR2_LINUX_KERNEL_DTS_SUPPORT
ifeq ($(BR2_LINUX_KERNEL_APPENDED_DTB),y)
# dtbs moved from arch/$ARCH/boot to arch/$ARCH/boot/dts since 3.8-rc1
define LINUX_APPEND_DTB
(cd $(LINUX_ARCH_PATH)/boot; \
for dtb in $(LINUX_DTS_NAME); do \
if test -e $${dtb}.dtb ; then \
dtbpath=$${dtb}.dtb ; \
else \
dtbpath=dts/$${dtb}.dtb ; \
fi ; \
cat zImage $${dtbpath} > zImage.$${dtb} || exit 1; \
done)
endef
ifeq ($(BR2_LINUX_KERNEL_APPENDED_UIMAGE),y)
# We need to generate a new u-boot image that takes into
# account the extra-size added by the device tree at the end
# of the image. To do so, we first need to retrieve both load
# address and entry point for the kernel from the already
# generate uboot image before using mkimage -l.
LINUX_APPEND_DTB += ; \
MKIMAGE_ARGS=`$(MKIMAGE) -l $(LINUX_IMAGE_PATH) |\
sed -n -e 's/Image Name:[ ]*\(.*\)/-n \1/p' -e 's/Load Address:/-a/p' -e 's/Entry Point:/-e/p'`; \
for dtb in $(LINUX_DTS_NAME); do \
$(MKIMAGE) -A $(MKIMAGE_ARCH) -O linux \
-T kernel -C none $${MKIMAGE_ARGS} \
-d $(LINUX_ARCH_PATH)/boot/zImage.$${dtb} $(LINUX_IMAGE_PATH).$${dtb}; \
done
endif
endif
# Compilation. We make sure the kernel gets rebuilt when the
# configuration has changed. We call the 'all' and
# '$(LINUX_TARGET_NAME)' targets separately because calling them in
# the same $(MAKE) invocation has shown to cause parallel build
# issues.
# The call to disable gcc-plugins is a stop-gap measure:
# http://lists.busybox.net/pipermail/buildroot/2020-May/282727.html
define LINUX_BUILD_CMDS
$(call KCONFIG_DISABLE_OPT,CONFIG_GCC_PLUGINS)
$(foreach dts,$(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_DTS_PATH)), \
cp -f $(dts) $(LINUX_ARCH_PATH)/boot/dts/
)
$(LINUX_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) all
$(LINUX_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(@D) $(LINUX_TARGET_NAME)
$(LINUX_BUILD_DTB)
$(LINUX_APPEND_DTB)
endef
ifeq ($(BR2_LINUX_KERNEL_APPENDED_DTB),y)
# When a DTB was appended, install the potential several images with
# appended DTBs.
define LINUX_INSTALL_IMAGE
mkdir -p $(1)
cp $(LINUX_ARCH_PATH)/boot/$(LINUX_IMAGE_NAME).* $(1)
endef
else
# Otherwise, just install the unique image generated by the kernel
# build process.
define LINUX_INSTALL_IMAGE
$(INSTALL) -m 0644 -D $(LINUX_IMAGE_PATH) $(1)/$(notdir $(LINUX_IMAGE_NAME))
endef
endif
ifeq ($(BR2_LINUX_KERNEL_INSTALL_TARGET),y)
define LINUX_INSTALL_KERNEL_IMAGE_TO_TARGET
$(call LINUX_INSTALL_IMAGE,$(TARGET_DIR)/boot)
$(call LINUX_INSTALL_DTB,$(TARGET_DIR)/boot)
endef
endif
define LINUX_INSTALL_HOST_TOOLS
# Installing dtc (device tree compiler) as host tool, if selected
if grep -q "CONFIG_DTC=y" $(@D)/.config; then \
$(INSTALL) -D -m 0755 $(@D)/scripts/dtc/dtc $(HOST_DIR)/bin/linux-dtc ; \
$(if $(BR2_PACKAGE_HOST_DTC),,ln -sf linux-dtc $(HOST_DIR)/bin/dtc;) \
fi
endef
define LINUX_INSTALL_IMAGES_CMDS
$(call LINUX_INSTALL_IMAGE,$(BINARIES_DIR))
$(call LINUX_INSTALL_DTB,$(BINARIES_DIR))
endef
ifeq ($(BR2_STRIP_strip),y)
LINUX_MAKE_FLAGS += INSTALL_MOD_STRIP=1
endif
define LINUX_INSTALL_TARGET_CMDS
$(LINUX_INSTALL_KERNEL_IMAGE_TO_TARGET)
# Install modules and remove symbolic links pointing to build
# directories, not relevant on the target
@if grep -q "CONFIG_MODULES=y" $(@D)/.config; then \
$(LINUX_MAKE_ENV) $(MAKE1) $(LINUX_MAKE_FLAGS) -C $(@D) modules_install; \
rm -f $(TARGET_DIR)/lib/modules/$(LINUX_VERSION_PROBED)/build ; \
rm -f $(TARGET_DIR)/lib/modules/$(LINUX_VERSION_PROBED)/source ; \
fi
$(LINUX_INSTALL_HOST_TOOLS)
endef
# Run depmod in a target-finalize hook, to encompass modules installed by
# packages.
define LINUX_RUN_DEPMOD
if test -d $(TARGET_DIR)/lib/modules/$(LINUX_VERSION_PROBED) \
&& grep -q "CONFIG_MODULES=y" $(LINUX_DIR)/.config; then \
$(HOST_DIR)/sbin/depmod -a -b $(TARGET_DIR) $(LINUX_VERSION_PROBED); \
fi
endef
LINUX_TARGET_FINALIZE_HOOKS += LINUX_RUN_DEPMOD
# Include all our extensions.
#
# Note: our package infrastructure uses the full-path of the last-scanned
# Makefile to determine what package we're currently defining, using the
# last directory component in the path. Additionally, the full path of
# the package directory is also stored in _PKGDIR (e.g. to find patches)
#
# As such, including other Makefiles, like below, before we call one of
# the *-package macros usually doesn't work.
#
# However, by including the in-tree extensions after the ones from the
# br2-external trees, we're back to the situation where the last Makefile
# scanned *is* included from the correct directory.
#
# NOTE: this is very fragile, and extra care must be taken to ensure that
# we always end up with an in-tree included file. That's mostly OK, because
# we do have in-tree linux-extensions.
#
include $(sort $(wildcard $(foreach ext,$(BR2_EXTERNAL_DIRS), \
$(ext)/linux/linux-ext-*.mk)))
include $(sort $(wildcard linux/linux-ext-*.mk))
LINUX_PATCH_DEPENDENCIES += $(foreach ext,$(LINUX_EXTENSIONS),\
$(if $(BR2_LINUX_KERNEL_EXT_$(call UPPERCASE,$(ext))),$(ext)))
LINUX_PRE_PATCH_HOOKS += $(foreach ext,$(LINUX_EXTENSIONS),\
$(if $(BR2_LINUX_KERNEL_EXT_$(call UPPERCASE,$(ext))),\
$(call UPPERCASE,$(ext))_PREPARE_KERNEL))
# Checks to give errors that the user can understand
# When a custom repository has been set, check for the repository version
ifeq ($(BR2_LINUX_KERNEL_CUSTOM_SVN)$(BR2_LINUX_KERNEL_CUSTOM_GIT)$(BR2_LINUX_KERNEL_CUSTOM_HG),y)
ifeq ($(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION)),)
$(error No custom repository version set. Check your BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION setting)
endif
ifeq ($(call qstrip,$(BR2_LINUX_KERNEL_CUSTOM_REPO_URL)),)
$(error No custom repo URL set. Check your BR2_LINUX_KERNEL_CUSTOM_REPO_URL setting)
endif
endif
ifeq ($(BR_BUILDING),y)
ifeq ($(BR2_LINUX_KERNEL_USE_DEFCONFIG),y)
# We must use the user-supplied kconfig value, because
# LINUX_KCONFIG_DEFCONFIG will at least contain the
# trailing _defconfig
ifeq ($(call qstrip,$(BR2_LINUX_KERNEL_DEFCONFIG)),)
$(error No kernel defconfig name specified, check your BR2_LINUX_KERNEL_DEFCONFIG setting)
endif
endif
ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG),y)
ifeq ($(LINUX_KCONFIG_FILE),)
$(error No kernel configuration file specified, check your BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE setting)
endif
endif
ifeq ($(BR2_LINUX_KERNEL_DTS_SUPPORT):$(strip $(LINUX_DTS_NAME)),y:)
$(error No kernel device tree source specified, check your \
BR2_LINUX_KERNEL_INTREE_DTS_NAME / BR2_LINUX_KERNEL_CUSTOM_DTS_PATH settings)
endif
endif # BR_BUILDING
$(eval $(kconfig-package))
# Support for rebuilding the kernel after the cpio archive has
# been generated.
.PHONY: linux-rebuild-with-initramfs
linux-rebuild-with-initramfs: $(LINUX_DIR)/.stamp_target_installed
linux-rebuild-with-initramfs: $(LINUX_DIR)/.stamp_images_installed
linux-rebuild-with-initramfs: rootfs-cpio
linux-rebuild-with-initramfs:
@$(call MESSAGE,"Rebuilding kernel with initramfs")
# Build the kernel.
$(LINUX_MAKE_ENV) $(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) $(LINUX_TARGET_NAME)
$(LINUX_APPEND_DTB)
# Copy the kernel image(s) to its(their) final destination
$(call LINUX_INSTALL_IMAGE,$(BINARIES_DIR))
# If there is a .ub file copy it to the final destination
test ! -f $(LINUX_IMAGE_PATH).ub || cp $(LINUX_IMAGE_PATH).ub $(BINARIES_DIR)