c35f157486
Xenomai has two mutually exclusive cores: - Cobalt: dual-kernel approach: patched kernel + userland - Mercury: only userland In the Cobalt core, not all architectures are supported. This is the source of the existing ARCH_SUPPORTS variable. In the Mercury core, there is no imposed architecture restriction. Rename the XENOMAI_ARCH_SUPPORTS flag to XENOMAI_COBALT_ARCH_SUPPORTS and move its check from the Xenomai package to the Cobalt core. Nevertheless, even for Mercury, there are some restrictions: - pthread_atfork is used, which requires an MMU - sync functions like __sync_sub_and_fetch and __sync_add_and_fetch are expected. As the corresponding 'linux extension' selects Xenomai, we add the MMU and sync dependencies there too. They may or may not already be covered by XENOMAI_COBALT_ARCH_SUPPORTS flag. Signed-off-by: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
139 lines
4.3 KiB
Plaintext
139 lines
4.3 KiB
Plaintext
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
|
|
http://download.gna.org/adeos/patches
|
|
|
|
Xenomai is know to support Blackfin, SH4, x86, ARM, NIOS2
|
|
and PowerPC architectures.
|
|
|
|
config BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH
|
|
string "Path for Adeos patch file"
|
|
depends on BR2_LINUX_KERNEL_EXT_XENOMAI
|
|
help
|
|
Optionally, explicitly specify the Adeos patch to use.
|
|
Download it at http://download.gna.org/adeos/patches
|
|
and 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).
|
|
|
|
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"
|
|
|
|
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
|
|
|
|
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
|
|
|
|
endif # aufs
|
|
|
|
endmenu
|