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Add support for the RTAI real-time extension

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[Peter: fix rtai Config.in]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit is contained in:
Thomas Petazzoni
2011-09-17 22:22:58 +02:00
committed by Peter Korsgaard
parent a473a616d2
commit 8797a9cd1f
5 changed files with 83 additions and 0 deletions
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13
linux/Config.ext.in
View File

@@ -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

47
linux/linux-ext-rtai.mk Normal file
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@@ -0,0 +1,47 @@
##################################################
# 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