From 54fd7b786f48522ac5cac0eebfea85b309e42b0f Mon Sep 17 00:00:00 2001
From: Jan Altensen <info@stricted.net>
Date: Sat, 19 Jun 2021 22:20:27 +0200
Subject: [PATCH] g12: Add build task for dtb/dtbo images

Change-Id: Ia0518fd7de611a0fb190900e7a86f2c8e571e585
---
 build/tasks/2ndbootloader.mk | 55 ++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 build/tasks/2ndbootloader.mk

diff --git a/build/tasks/2ndbootloader.mk b/build/tasks/2ndbootloader.mk
new file mode 100644
index 0000000..e36f76b
--- /dev/null
+++ b/build/tasks/2ndbootloader.mk
@@ -0,0 +1,55 @@
+#
+# Copyright (C) 2021 The LineageOS Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+ifneq ($(filter g12a g12b sm1, $(TARGET_AMLOGIC_SOC)),)
+
+MKDTBOIMG := $(HOST_OUT_EXECUTABLES)/mkdtboimg.py
+DTBTARGET := $(PRODUCT_OUT)/dtb.img
+DTBTOOL := $(HOST_OUT_EXECUTABLES)/dtbToolAmlogic$(HOST_EXECUTABLE_SUFFIX)
+DTBTMP := $(PRODUCT_OUT)/tmp_dt
+DTBDIR := $(PRODUCT_OUT)/obj/KERNEL_OBJ/arch/arm64/boot/dts/amlogic
+DTCDIR := $(PRODUCT_OUT)/obj/KERNEL_OBJ/scripts/dtc/
+
+TARGET_DTBO_NAME ?= amlogicandroid_p_overlay_dt
+
+define aml-compress-dtb
+	if [ -n "$(shell find $(1) -size +200k)" ]; then \
+		echo "$(1) > 200k will be gziped"; \
+		mv $(1) $(1).orig; \
+		$(MINIGZIP) -c $(1).orig > $(1); \
+	fi;
+endef
+
+$(INSTALLED_2NDBOOTLOADER_TARGET): $(INSTALLED_KERNEL_TARGET) $(DTBTOOL) | $(ACP) $(MINIGZIP)
+ifeq ($(words $(TARGET_DTB_NAME)),1)
+	$(hide) $(ACP) $(DTBDIR)/$(TARGET_DTB_NAME).dtb $(DTBTARGET);
+	$(hide) $(call aml-compress-dtb, $(DTBTARGET))
+	$(hide) $(ACP) $(DTBTARGET) $@;
+else
+	$(hide) mkdir -p $(DTBTMP);
+	$(foreach aDts, $(TARGET_DTB_NAME), \
+		$(ACP) $(DTBDIR)/$(strip $(aDts)).dtb $(DTBTMP)/$(strip $(aDts)).dtb; \
+	)
+	$(hide) $(DTBTOOL) -o $(DTBTARGET) -p $(DTCDIR) $(DTBTMP)
+	$(hide) $(call aml-compress-dtb, $(DTBTARGET))
+	$(hide) $(ACP) $(DTBTARGET) $@;
+	$(hide) rm -rf $(DTBTMP);
+endif
+
+$(BOARD_PREBUILT_DTBOIMAGE): $(INSTALLED_KERNEL_TARGET) $(MKDTBOIMG)
+	$(MKDTBOIMG) create $@ $(DTBDIR)/$(TARGET_DTBO_NAME).dtb
+
+endif
-- 
2.20.1