dtb: provide option to install dtb to boot directory

---
 linux/Config.in |    6 ++++++
 linux/linux.mk  |    7 +++++++
 2 files changed, 13 insertions(+)

index 9ebe0c9..8918297 100644
@@ -284,6 +284,12 @@ config BR2_LINUX_KERNEL_INSTALL_TARGET
 	  /boot in the target root filesystem, as is typically done on
 	  x86/x86_64 systems.
 
+config BR2_LINUX_DEVICE_TREE_INSTALL_TARGET
+	bool "Install Device Tree to /boot in target"
+	depends on BR2_LINUX_KERNEL_DTS_SUPPORT
+	help
+	  Select this option to have the device tree installed to
+	  /boot in the target root filesystem.
 
 # Linux extensions
 source "linux/Config.ext.in"

index 3321d80..6d8c752 100644
@@ -211,6 +211,12 @@ define LINUX_APPEND_DTB
 endef
 endif
 
+ifeq ($(BR2_LINUX_DEVICE_TREE_INSTALL_TARGET),y)
+define LINUX_INSTALL_DTB_TO_TARGET
+	install -m 0644 -D $(KERNEL_ARCH_PATH)/boot/$(KERNEL_DTS_NAME).dtb $(TARGET_DIR)/boot/$(KERNEL_DTS_NAME).dtb
+endef
+endif
+
 # Compilation. We make sure the kernel gets rebuilt when the
 # configuration has changed.
 define LINUX_BUILD_CMDS

@@ -247,6 +253,7 @@ endef
 define LINUX_INSTALL_TARGET_CMDS
 	$(LINUX_INSTALL_KERNEL_IMAGE_TO_TARGET)
 	$(LINUX_INSTALL_DTB)
+	$(LINUX_INSTALL_DTB_TO_TARGET)
 	# Install modules and remove symbolic links pointing to build
 	# directories, not relevant on the target
 	@if grep -q "CONFIG_MODULES=y" $(@D)/.config; then 	\

1.7.10.4

Gary> Signed-off-by: Gary Coulbourne <[email protected]> Gary> ---

 Gary>  linux/Config.in |    6 ++++++
 Gary>  linux/linux.mk  |    7 +++++++

Gary> 2 files changed, 13 insertions(+)

Gary> diff --git a/linux/Config.in b/linux/Config.in Gary> index 9ebe0c9..8918297 100644
Gary> --- a/linux/Config.in
Gary> +++ b/linux/Config.in
Gary> @@ -284,6 +284,12 @@ config BR2_LINUX_KERNEL_INSTALL_TARGET

 Gary>  	  /boot in the target root filesystem, as is typically done on
 Gary>  	  x86/x86_64 systems.

Gary> +config BR2_LINUX_DEVICE_TREE_INSTALL_TARGET
Gary> + bool "Install Device Tree to /boot in target"
Gary> + depends on BR2_LINUX_KERNEL_DTS_SUPPORT
Gary> + help
Gary> + Select this option to have the device tree installed to
Gary> + /boot in the target root filesystem.

Gary> # Linux extensions
Gary> source "linux/Config.ext.in"
Gary> diff --git a/linux/linux.mk b/linux/linux.mk Gary> index 3321d80..6d8c752 100644
Gary> --- a/linux/linux.mk
Gary> +++ b/linux/linux.mk
Gary> @@ -211,6 +211,12 @@ define LINUX_APPEND_DTB Gary> endef
Gary> endif

Gary> +ifeq ($(BR2_LINUX_DEVICE_TREE_INSTALL_TARGET),y) Gary> +define LINUX_INSTALL_DTB_TO_TARGET
Gary> + install -m 0644 -D $(KERNEL_ARCH_PATH)/boot/$(KERNEL_DTS_NAME).dtb $(TARGET_DIR)/boot/$(KERNEL_DTS_NAME).dtb

I've just pushed two changes to support the new dtb location since 3.8-rc1, and I committed Maxime's 'Support multiple device tree build' patch yesterday, care to rebase against that and update the logic so it can handle multiple .dtb files?

Thanks.

Bye, Peter Korsgaard

Dear Gary Coulbourne,

This patch is in fact not needed, because the existing BR2_LINUX_KERNEL_INSTALL_TARGET option installs both the kernel image and the DTBs to /boot. I've updated the BR2_LINUX_KERNEL_INSTALL_TARGET help text to clarify this.

Thanks!

Thomas

Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com