From 956d4ab0f501c44f977297d8faac95afa43f3082 Mon Sep 17 00:00:00 2001
From: Thomas De Schampheleire
Date: Sat, 17 Sep 2011 22:22:52 +0200
Subject: 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: Benoit Mauduit <benoit.mauduit@openwide.fr>
Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
---
 linux/Config.ext.in        | 15 +++++++++++++++
 linux/linux-ext-xenomai.mk | 30 ++++++++++++++++++++++++++++++
 2 files changed, 45 insertions(+)
 create mode 100644 linux/linux-ext-xenomai.mk

(limited to 'linux')

diff --git a/linux/Config.ext.in b/linux/Config.ext.in
index 50e801d67..893edb58b 100644
--- a/linux/Config.ext.in
+++ b/linux/Config.ext.in
@@ -1,3 +1,18 @@
 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/$(ARCH)/
+	  and verify that your kernel version in buildroot matches.
+
 endmenu
diff --git a/linux/linux-ext-xenomai.mk b/linux/linux-ext-xenomai.mk
new file mode 100644
index 000000000..e855deddf
--- /dev/null
+++ b/linux/linux-ext-xenomai.mk
@@ -0,0 +1,30 @@
+##################################################
+# Linux Adeos/Xenomai extensions
+#
+# Patch the linux kernel with xenomai extension
+##################################################
+
+ifeq ($(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
-- 
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