Commit 8797a9cd authored by Thomas Petazzoni's avatar Thomas Petazzoni Committed by Peter Korsgaard
Browse files

Add support for the RTAI real-time extension 



[Peter: fix rtai Config.in]
Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
parent a473a616

linux/Config.ext.in

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@@ -15,4 +15,17 @@ config BR2_LINUX_KERNEL_EXT_XENOMAI_ADEOS_PATCH 
	  Download it at http://download.gna.org/adeos/patches/v2.6/$(ARCH)/

	  and verify that your kernel version in buildroot matches.



# RTAI

config BR2_LINUX_KERNEL_EXT_RTAI

       bool "RTAI Real-time patch"

       select BR2_PACKAGE_RTAI

       help

         RTAI Kernel part.



config BR2_LINUX_KERNEL_EXT_RTAI_PATCH

       depends on BR2_LINUX_KERNEL_EXT_RTAI

       string "Path for RTAI patch file"

       help

         Optionally, explicitly specify the RTAI patch to use.



endmenu

linux/linux-ext-rtai.mk

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

# Linux RTAI extensions

#

# Patch the linux kernel with RTAI extension

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



ifeq ($(BR2_LINUX_KERNEL_EXT_RTAI),y)

# Add dependency to RTAI (user-space) which provide kernel patches

LINUX_DEPENDENCIES += rtai-patch



RTAI_PATCH = $(call qstrip,$(BR2_LINUX_KERNEL_EXT_RTAI_PATCH))



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

ifeq ($(RTAI_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 \

		support/script/apply-patches.sh $(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

else

define RTAI_PREPARE_KERNEL

	support/script/apply-patches.sh 	\

		$(LINUX_DIR)			\

		$(dir $(RTAI_PATCH))		\

		$(notdir $(RTAI_PATCH))

endef

endif



LINUX_POST_PATCH_HOOKS += RTAI_PREPARE_KERNEL



endif #BR2_LINUX_EXT_RTAI

package/Config.in

+1 −0
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@@ -489,6 +489,7 @@ endmenu 


menu "Real-Time"

source "package/xenomai/Config.in"

source "package/rtai/Config.in"

endmenu



menu "Shell and utilities"

package/rtai/Config.in

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config BR2_PACKAGE_RTAI

	bool "rtai"

	depends on BR2_LINUX_KERNEL_EXT_RTAI

	help

	  RTAI - the RealTime Application Interface for Linux.



	  http://www.rtai.org

package/rtai/rtai.mk

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RTAI_VERSION = 3.8.1

RTAI_SOURCE  = rtai-$(RTAI_VERSION).tar.bz2

RTAI_SITE    = http://www.rtai.org/RTAI/



RTAI_DEPENDENCIES = linux



RTAI_CONF_OPT = \

	--with-linux-dir=$(LINUX_DIR) 	\

	--disable-leds		      	\

	--disable-rtailab		\

	--with-module-dir=/lib/modules/$(LINUX_VERSION_PROBED)/kernel/rtai



RTAI_MAKE = $(MAKE1)



$(eval $(call AUTOTARGETS,package,rtai))