[ptxdist] [PATCH 2/2] kernel: activate support for device tree overlays

[Michael Riesch <michael.riesch@wolfvision.net>]

Activate the recently introduced support for device tree overlays
for the kernel package.

Signed-off-by: Michael Riesch <michael.riesch@wolfvision.net>
---
 platforms/kernel.in | 28 +++++++++++++++++++++++++++-
 rules/kernel.make   |  9 +++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/platforms/kernel.in b/platforms/kernel.in
index 9976436ce..2c332e2cb 100644
--- a/platforms/kernel.in
+++ b/platforms/kernel.in
@@ -186,7 +186,7 @@ config KERNEL_DTS_PATH
 	help
 	  Define path to the dts source file. Multiple directories can be
 	  specified separated by ':'. A relative path will be expanded relative
-	  to the workspace and all other layers. Only on of the specified paths
+	  to the workspace and all other layers. Only one of the specified paths
 	  can be a relative path.
 
 config KERNEL_DTS
@@ -200,6 +200,32 @@ config KERNEL_DTS
 
 endif
 
+menuconfig KERNEL_DTBO
+	bool
+	prompt "Build device tree overlays    "
+
+if KERNEL_DTBO
+
+config KERNEL_DTSO_PATH
+	string "path to overlay file(s)"
+	default "${PTXDIST_PLATFORMCONFIG_SUBDIR}/dts/overlays:${KERNEL_DIR}/arch/${GENERIC_KERNEL_ARCH}/boot/dts"
+	help
+	  Define path to the dts(o) source file(s). Multiple directories can be
+	  specified separated by ':'. A relative path will be expanded relative
+	  to the workspace and all other layers. Only one of the specified paths
+	  can be a relative path.
+
+config KERNEL_DTSO
+	string "overlay file(s)"
+	default "<youroverlay>.dtso"
+	help
+	  Select the dts(o) file(s) to be compiled. For relative file
+	  names KERNEL_DTSO_PATH is used as a search path for the device
+	  tree files specified here.
+	  Multiple dts(o) files can be specified, separated by spaces.
+
+endif
+
 config KERNEL_CODE_SIGNING
 	prompt "use code signing infrastructure"
 	select KERNEL_OPENSSL
diff --git a/rules/kernel.make b/rules/kernel.make
index 0ecf5f4e9..1b70faf21 100644
--- a/rules/kernel.make
+++ b/rules/kernel.make
@@ -29,7 +29,11 @@ KERNEL_BUILD_DIR	:= $(KERNEL_DIR)-build
 KERNEL_CONFIG		:= $(call ptx/in-platformconfigdir, $(call remove_quotes, $(PTXCONF_KERNEL_CONFIG)))
 KERNEL_DTS_PATH		:= $(call remove_quotes,$(PTXCONF_KERNEL_DTS_PATH))
 KERNEL_DTS		:= $(call remove_quotes,$(PTXCONF_KERNEL_DTS))
+KERNEL_DTSO_PATH	:= $(call remove_quotes,$(PTXCONF_KERNEL_DTSO_PATH))
+KERNEL_DTSO		:= $(call remove_quotes,$(PTXCONF_KERNEL_DTSO))
 KERNEL_DTB_FILES	:= $(addsuffix .dtb,$(basename $(KERNEL_DTS)))
+KERNEL_DTBO_FILES	:= $(addsuffix .dtbo,$(basename $(KERNEL_DTSO)))
+KERNEL_DTBO_DIR		:= /boot/overlays
 KERNEL_LICENSE		:= GPL-2.0-only
 KERNEL_SOURCE		:= $(SRCDIR)/$(KERNEL).$(KERNEL_SUFFIX)
 KERNEL_DEVPKG		:= NO
@@ -265,6 +269,7 @@ ifdef PTXCONF_KERNEL_MODULES_INSTALL
 	@$(call world/install, KERNEL)
 endif
 	@$(call world/dtb, KERNEL)
+	@$(call world/dtbo, KERNEL)
 	@$(call touch)
 
 # ----------------------------------------------------------------------------
@@ -294,6 +299,10 @@ ifdef PTXCONF_KERNEL_INSTALL
 	@$(foreach dtb, $(KERNEL_DTB_FILES), \
 		$(call install_copy, kernel, 0, 0, 0644, -, \
 			/boot/$(dtb), n)$(ptx/nl))
+
+	@$(foreach dtbo, $(KERNEL_DTBO_FILES), \
+		$(call install_copy, kernel, 0, 0, 0644, -, \
+			$(KERNEL_DTBO_DIR)/$(dtbo), n)$(ptx/nl))
 endif
 
 # install the ELF kernel image for debugging purpose
-- 
2.30.2


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