[Buildroot] [PATCH 1/1] Added linux drivers backports project

[Petr Vorel]

https://backports.wiki.kernel.org

Signed-off-by: Petr Vorel <petr.vorel at gmail.com>
---
 package/Config.in                            |  1 +
 package/linux-backports/Config.in            | 36 ++++++++++++++
 package/linux-backports/linux-backports.hash |  2 +
 package/linux-backports/linux-backports.mk   | 73 ++++++++++++++++++++++++++++
 4 files changed, 112 insertions(+)
 create mode 100644 package/linux-backports/Config.in
 create mode 100644 package/linux-backports/linux-backports.hash
 create mode 100644 package/linux-backports/linux-backports.mk

diff --git a/package/Config.in b/package/Config.in
index 34b6017..c8e24a7 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -365,6 +365,7 @@ endif
 	source "package/iucode-tool/Config.in"
 	source "package/kbd/Config.in"
 	source "package/lcdproc/Config.in"
+	source "package/linux-backports/Config.in"
 	source "package/lirc-tools/Config.in"
 	source "package/lm-sensors/Config.in"
 	source "package/lshw/Config.in"
diff --git a/package/linux-backports/Config.in b/package/linux-backports/Config.in
new file mode 100644
index 0000000..c108b59
--- /dev/null
+++ b/package/linux-backports/Config.in
@@ -0,0 +1,36 @@
+config BR2_PACKAGE_LINUX_BACKPORTS
+	bool "Linux kernel driver backports"
+	help
+	  The backports package includes many Linux drivers from recent
+	  kernels, backported to older ones.
+
+	  https://backports.wiki.kernel.org
+
+if BR2_PACKAGE_LINUX_BACKPORTS
+
+choice
+	prompt "Linux kernel driver backports configuration"
+	default BR2_PACKAGE_LINUX_BACKPORTS_USE_DEFCONFIG
+
+config BR2_PACKAGE_LINUX_BACKPORTS_USE_DEFCONFIG
+	bool "Using a defconfig"
+
+config BR2_PACKAGE_LINUX_BACKPORTS_USE_CUSTOM_CONFIG
+	bool "Using a custom config file"
+
+endchoice
+
+config BR2_PACKAGE_LINUX_BACKPORTS_DEFCONFIG
+	string "Defconfig name"
+	depends on BR2_PACKAGE_LINUX_BACKPORTS_USE_DEFCONFIG
+	help
+          Name of the backports defconfig file to use. The defconfig is located
+          in defconfigs/ directory in the backports tree.
+
+config BR2_PACKAGE_LINUX_BACKPORTS_CUSTOM_CONFIG_FILE
+	string "Configuration file path"
+	depends on BR2_PACKAGE_LINUX_BACKPORTS_USE_CUSTOM_CONFIG
+	help
+	  Path to the kernel configuration file
+
+endif
diff --git a/package/linux-backports/linux-backports.hash b/package/linux-backports/linux-backports.hash
new file mode 100644
index 0000000..6b8cb4f
--- /dev/null
+++ b/package/linux-backports/linux-backports.hash
@@ -0,0 +1,2 @@
+# From: https://www.kernel.org/pub/linux/kernel/projects/backports/stable/v3.19-rc1/sha256sums.asc
+sha256 d782422d664b84128154fc5d0e9b8cd04bb208e53546d68856ad3f7f53f7de98  backports-3.19-rc1-1.tar.xz
diff --git a/package/linux-backports/linux-backports.mk b/package/linux-backports/linux-backports.mk
new file mode 100644
index 0000000..f49cd7d
--- /dev/null
+++ b/package/linux-backports/linux-backports.mk
@@ -0,0 +1,73 @@
+LINUX_BACKPORTS_VERSION  = 3.19-rc1
+LINUX_BACKPORTS_REVISION = 1
+LINUX_BACKPORTS_SOURCE   = backports-$(LINUX_BACKPORTS_VERSION)-$(LINUX_BACKPORTS_REVISION).tar.xz
+LINUX_BACKPORTS_SITE     = $(BR2_KERNEL_MIRROR)/linux/kernel/projects/backports/stable/v$(LINUX_BACKPORTS_VERSION)
+LINUX_BACKPORTS_DEPENDENCIES = linux
+
+LINUX_BACKPORTS_MAKE_FLAGS = \
+	$(TARGET_MAKE_ENV) \
+	$(LINUX_MAKE_FLAGS) \
+	KLIB_BUILD=$(LINUX_DIR) \
+	KLIB=$(TARGET_DIR)
+
+
+ifeq ($(BR2_PACKAGE_LINUX_BACKPORTS_USE_DEFCONFIG),y)
+LINUX_BACKPORTS_SOURCE_CONFIG = $(@D)/defconfigs/$(call qstrip,$(BR2_PACKAGE_LINUX_BACKPORTS_DEFCONFIG))
+else ifeq ($(BR2_PACKAGE_LINUX_BACKPORTS_USE_CUSTOM_CONFIG),y)
+LINUX_BACKPORTS_SOURCE_CONFIG = $(BR2_PACKAGE_LINUX_BACKPORTS_CUSTOM_CONFIG_FILE)
+endif
+
+define LINUX_BACKPORTS_CONFIGURE_CMDS
+	$(INSTALL) -m 0644 $(LINUX_BACKPORTS_SOURCE_CONFIG) $(@D)/.config
+	$(LINUX_BACKPORTS_MAKE_FLAGS) $(MAKE) -C $(@D) olddefconfig
+endef
+
+define LINUX_BACKPORTS_BUILD_CMDS
+	$(LINUX_BACKPORTS_MAKE_FLAGS) $(MAKE) -C $(@D)
+endef
+
+define LINUX_BACKPORTS_INSTALL_TARGET_CMDS
+	$(LINUX_BACKPORTS_MAKE_FLAGS) $(MAKE) -C $(LINUX_DIR) M=$(@D) \
+		INSTALL_MOD_DIR=backports \
+		modules_install
+endef
+
+$(eval $(generic-package))
+
+ifeq ($(BR2_PACKAGE_LINUX_BACKPORTS),y)
+linux-backports-menuconfig linux-backports-xconfig linux-backports-gconfig linux-backports-nconfig: linux-backports-configure
+	$(MAKE) $(LINUX_BACKPORTS_MAKE_FLAGS) -C $(LINUX_BACKPORTS_DIR) \
+		$(subst linux-backports-,,$@)
+	rm -f $(LINUX_BACKPORTS_DIR)/.stamp_{built,target_installed,images_installed}
+
+linux-backports-savedefconfig: linux-backports-configure
+	$(MAKE) $(LINUX_BACKPORTS_MAKE_FLAGS) -C $(LINUX_BACKPORTS_DIR) \
+		$(subst linux-backports-,,$@)
+
+ifeq ($(BR2_PACKAGE_LINUX_BACKPORTS_USE_CUSTOM_CONFIG),y)
+linux-backports-update-config: linux-backports-configure $(LINUX_BACKPORTS_DIR)/.config
+	cp -f $(LINUX_BACKPORTS_DIR)/.config $(BR2_PACKAGE_LINUX_BACKPORTS_CUSTOM_CONFIG_FILE)
+
+linux-backports-update-defconfig: linux-backports-savedefconfig
+	cp -f $(LINUX_BACKPORTS_DIR)/defconfig $(BR2_PACKAGE_LINUX_BACKPORTS_CUSTOM_CONFIG_FILE)
+else
+linux-backports-update-config: ;
+linux-backports-update-defconfig: ;
+endif
+endif
+
+# Checks to give errors that the user can understand
+ifeq ($(filter source,$(MAKECMDGOALS)),)
+ifeq ($(BR2_PACKAGE_LINUX_BACKPORTS_USE_DEFCONFIG),y)
+ifeq ($(call qstrip,$(BR2_PACKAGE_LINUX_BACKPORTS_DEFCONFIG)),)
+$(error No kernel defconfig name specified, check your BR2_PACKAGE_LINUX_BACKPORTS_DEFCONFIG setting)
+endif
+endif
+
+ifeq ($(BR2_PACKAGE_LINUX_BACKPORTS_USE_CUSTOM_CONFIG),y)
+ifeq ($(call qstrip,$(BR2_PACKAGE_LINUX_BACKPORTS_CUSTOM_CONFIG_FILE)),)
+$(error No kernel configuration file specified, check your BR2_PACKAGE_LINUX_BACKPORTS_CUSTOM_CONFIG_FILE setting)
+endif
+endif
+
+endif
-- 
1.8.0