From 9fa246b11ba80355fa65560c457eecb3d6871b2b Mon Sep 17 00:00:00 2001
From: jiamin ma <jiamin.ma@amlogic.com>
Date: Thu, 22 Nov 2018 09:34:44 +0800
Subject: [PATCH] fdto: peripheral driver support dtbo [1/4]

PD#SWPL-2193

Problem:
We cannot compile dtbo file in a way like
make ARCH=arm foo.dtbo

Solution:
Add dtbo target and reuse the dtb rules

Verify:
Locally verifed

Change-Id: I34b88e61b409defe553cf5ed1077c160b9a6f350
Signed-off-by: jiamin ma <jiamin.ma@amlogic.com>
---
 arch/arm/Makefile    | 4 ++++
 arch/arm64/Makefile  | 6 +++++-
 scripts/Makefile.lib | 5 +++++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index cf89fef3a24f..936ce8dd68aa 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -337,6 +337,10 @@ $(INSTALL_TARGETS):
 
 %.dtb: | scripts
 	$(Q)$(MAKE) $(build)=$(boot)/dts/amlogic MACHINE=$(MACHINE) $(boot)/dts/amlogic/$@
+ifeq ($(CONFIG_AMLOGIC_MODIFY),y)
+%.dtbo: | scripts
+	$(Q)$(MAKE) $(build)=$(boot)/dts/amlogic MACHINE=$(MACHINE) $(boot)/dts/amlogic/$@
+endif
 
 PHONY += dtbs dtbs_install
 
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 88fdf46de644..1412c114b413 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -145,7 +145,11 @@ zinstall install:
 	$(Q)$(MAKE) $(build)=$(boot) $@
 
 %.dtb: scripts
-	$(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
+	$(Q)$(MAKE) $(build)=$(boot)/dts/amlogic $(boot)/dts/amlogic/$@
+ifeq ($(CONFIG_AMLOGIC_MODIFY),y)
+%.dtbo: scripts
+	$(Q)$(MAKE) $(build)=$(boot)/dts/amlogic $(boot)/dts/amlogic/$@
+endif
 
 PHONY += dtbs dtbs_install
 
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index ed5d8cc7e442..ebb28f9918b9 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -325,6 +325,11 @@ cmd_dtc = mkdir -p $(dir ${dtc-tmp}) ; \
 $(obj)/%.dtb: $(src)/%.dts FORCE
 	$(call if_changed_dep,dtc)
 
+ifeq ($(CONFIG_AMLOGIC_MODIFY),y)
+$(obj)/%.dtbo: $(src)/%.dts FORCE
+	$(call if_changed_dep,dtc)
+endif
+
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 
 # cat