Commit 956d4ab0 authored by Thomas De Schampheleire's avatar Thomas De Schampheleire Committed by Peter Korsgaard
Browse files

Add xenomai real-time Framework to buildroot 



[Fixes by Thomas, including comments from Arnout:
  * Use AUTOTARGETS instead of GENTARGETS

  * Use $(KERNEL_ARCH) instead of $(BR2_ARCH) as argument to the
    prepare-kernel.sh script. This allows the arch name to be fixed
    with the usual sed expressions and the quotes to be stripped.

  * Add the --verbose option to prepare-kernel.sh. This allows to get
    some clear error message when no Xenomai patch has been found for
    the current kernel version.

  * Improve the help texts as suggested by Arnout, and remove the
    now useless README file.

  * Add a BR2_PACKAGE_XENOMAI_SMP option, instead of poking inside the
    kernel configuration to find out whether SMP is enabled or
    not. This cannot work because: 1) the kernel might be built
    outside of Buildroot and 2) if the kernel is built inside
    Buildroot, it is built *after* Xenomai, so the kernel
    configuration file is typically not yet present.

  * Simplify the ARM subarchitecture selection as suggested by Arnout.

  * Remove the documentation and development files according to
    Buildroot standards (using BR2_HAVE_DOCUMENTATION and
    BR2_HAVE_DEVFILES).

  * Simplify the /etc/ld.so.conf modification logic.
]

[Peter: whitespace fixes]
Signed-off-by: default avatarBenoit Mauduit <benoit.mauduit@openwide.fr>
Signed-off-by: default avatarThomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
parent 3011d235

linux/Config.ext.in

+15 −0
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menu "Linux Kernel Extensions"



# Xenomai

config BR2_LINUX_KERNEL_EXT_XENOMAI

	bool "Adeos/Xenomai Real-time patch"

	select BR2_PACKAGE_XENOMAI

	help

	  Xenomai Kernel part.



config BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH

	depends on BR2_LINUX_KERNEL_EXT_XENOMAI

	string "Path for Adeos patch file"

	help

	  Optionally, explicitly specify the Adeos patch to use.

	  Download it at http://download.gna.org/adeos/patches/v2.6/$(ARCH)/

	  and verify that your kernel version in buildroot matches.



endmenu

linux/linux-ext-xenomai.mk

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##################################################

# Linux Adeos/Xenomai extensions

#

# Patch the linux kernel with xenomai extension

##################################################



ifeq ($(BR2_LINUX_KERNEL_EXT_XENOMAI),y)

# Add dependency to xenomai (user-space) which provide ksrc part

LINUX_DEPENDENCIES += xenomai



# Adeos patch version

XENOMAI_ADEOS_PATCH = $(call qstrip,$(BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH))

ifeq ($(XENOMAI_ADEOS_PATCH),)

XENOMAI_ADEOS_OPT = --default

else

XENOMAI_ADEOS_OPT = --adeos=$(XENOMAI_ADEOS_PATCH)

endif



# Prepare kernel patch

define XENOMAI_PREPARE_KERNEL

	$(XENOMAI_DIR)/scripts/prepare-kernel.sh \

		--linux=$(LINUX_DIR) \

		--arch=$(KERNEL_ARCH) \

		$(XENOMAI_ADEOS_OPT) \

		--verbose

endef



LINUX_POST_EXTRACT_HOOKS += XENOMAI_PREPARE_KERNEL



endif #BR2_LINUX_EXT_XENOMAI

package/Config.in

+4 −0
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@@ -487,6 +487,10 @@ source "package/rpm/Config.in" 
endif

endmenu



menu "Real-Time"

source "package/xenomai/Config.in"

endmenu



menu "Shell and utilities"

source "package/at/Config.in"

if BR2_PACKAGE_BUSYBOX_SHOW_OTHERS

package/xenomai/Config.in

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config BR2_PACKAGE_XENOMAI

	bool "Xenomai Userspace"

	help

	  Real-Time Framework for Linux

	  http://www.xenomai.org



	  Xenomai is split in two parts: a kernel part and an

	  userspace part.



	  This package contains the userspace part, which consists

	  mainly in libraries to write userspace real-time programs

	  that interact with the in-kernel Xenomai real-time core.



	  For those libraries to work, you need a Xenomai-enabled

	  kernel. This is possible in two ways:

	   - if you compile your kernel with Buildroot, you need to go

	     to Linux Kernel -> Linux Kernel Extensions to enable the

	     Xenomai extension.

	   - if you compile your kernel outside of Buildroot, you need

	     to make sure that it is Xenomai-enabled.



	  Finally, if you are using a static /dev, make sure to

	  uncomment the Xenomai entries listed in

	  target/generic/device_table_dev.txt.



if BR2_PACKAGE_XENOMAI



config BR2_PACKAGE_XENOMAI_VERSION

	string "Custom Xenomai version"

	help

	  Manually select Xenomai version.  If left empty, the default

	  version will be used.



	  Make sure that the selected version has a patch for your

	  selected Linux kernel. If it does not, download and select

	  a patch manually with

	  BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH, in the Linux

	  Kernel -> Linux Kernel Extensions menu.



config BR2_PACKAGE_XENOMAI_SMP

	bool "Enable SMP support"

	help

	  This option allows to enable or disable SMP support. It has

	  to match your kernel configuration.



choice

	prompt "Xenomai ARM CPU type"

	depends on BR2_arm

	default BR2_PACKAGE_XENOMAI_CPU_GENERIC_ARM

	help

	  On the ARM architecture, Xenomai needs to be configured for

	  a specific sub-architecture.  Select the appropriate

	  sub-architecture from the list.



	config BR2_PACKAGE_XENOMAI_CPU_AT91RM9200

		bool "Atmel AT91RM9200"



	config BR2_PACKAGE_XENOMAI_CPU_AT91SAM926X

		bool "Atmel AT91SAM926X"



	config BR2_PACKAGE_XENOMAI_CPU_INTEGRATOR

		bool "ARM Ltd. Integrator"



	config BR2_PACKAGE_XENOMAI_CPU_IXP4XX

		bool "Intel IXP4XX (XScale)"



	config BR2_PACKAGE_XENOMAI_CPU_IMX

		bool "Freescale i.MX (MX1/MXL)"



	config BR2_PACKAGE_XENOMAI_CPU_IMX21

		bool "Freescale i.MX21"



	config BR2_PACKAGE_XENOMAI_CPU_MX2

		bool "Freescale MXC/MX2"



	config BR2_PACKAGE_XENOMAI_CPU_MX3

		bool "Freescale MXC/MX3"



	config BR2_PACKAGE_XENOMAI_CPU_SA1100

		bool "StrongARM SA1100"



	config BR2_PACKAGE_XENOMAI_CPU_S3C2410

		bool "S3C2410"



	config BR2_PACKAGE_XENOMAI_CPU_GENERIC_ARM

		bool "Generic ARM"



endchoice



# Now set CPU type. We force manually selected type even if detected in case

# user takes the risk.

config BR2_PACKAGE_XENOMAI_CPU_TYPE

	string

	depends on BR2_PACKAGE_XENOMAI && BR2_arm

	default "at91rm9200"  if BR2_PACKAGE_XENOMAI_CPU_AT91RM9200

	default "at91sam926x" if BR2_PACKAGE_XENOMAI_CPU_AT91SAM926X

	default "integrator"  if BR2_PACKAGE_XENOMAI_CPU_INTEGRATOR

	default "ixp4xx"      if BR2_PACKAGE_XENOMAI_CPU_IXP4XX

	default "generic"     if BR2_PACKAGE_XENOMAI_CPU_GENERIC_ARM

	default "imx"         if BR2_PACKAGE_XENOMAI_CPU_IMX

	default "imx21"       if BR2_PACKAGE_XENOMAI_CPU_IMX21

	default "mx2"         if BR2_PACKAGE_XENOMAI_CPU_MX2

	default "mx3"         if BR2_PACKAGE_XENOMAI_CPU_MX3

	default "s3c2410"     if BR2_PACKAGE_XENOMAI_CPU_S3C2410



endif

package/xenomai/xenomai-do-not-install-devices.patch

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+11 −0
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--- a/Makefile.in	2011-06-24 16:11:23.591449817 +0200

+++ b/Makefile.in	2011-06-24 16:20:29.638129633 +0200

@@ -719,7 +719,7 @@

 	  $$sudo mknod -m 666 $(DESTDIR)/dev/rtheap c 10 254 ; \

 	fi

 

-install-exec-local: devices

+install-exec-local:

 

 install-user:

 	$(MAKE) SUDO=false install