From 3330584d2c5247d65744939c139160502b4b8c87 Mon Sep 17 00:00:00 2001
From: Igor Opaniuk <igor.opaniuk@linaro.org>
Date: Sun, 3 Jun 2018 21:56:37 +0300
Subject: [PATCH] avb2.0: integrate avb 2.0 into the build system

Integrate libavb into the build system. Introduce CONFIG_LIBAVB
build option.

Signed-off-by: Igor Opaniuk <igor.opaniuk@linaro.org>
---
 lib/Kconfig         | 14 ++++++++++++++
 lib/Makefile        |  1 +
 lib/libavb/Makefile | 15 +++++++++++++++
 3 files changed, 30 insertions(+)
 create mode 100644 lib/libavb/Makefile

diff --git a/lib/Kconfig b/lib/Kconfig
index dd54516..a77bf1c 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -187,6 +187,20 @@ config TPM
 
 endmenu
 
+menu "Android Verified Boot"
+
+config LIBAVB
+	bool "Android Verified Boot 2.0 support"
+	depends on ANDROID_BOOT_IMAGE
+	default n
+	help
+	  This enables support of Android Verified Boot 2.0 which can be used
+	  to assure the end user of the integrity of the software running on a
+	  device. Introduces such features as boot chain of trust, rollback
+	  protection etc.
+
+endmenu
+
 menu "Hashing Support"
 
 config SHA1
diff --git a/lib/Makefile b/lib/Makefile
index 427d359..5f583ae 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -56,6 +56,7 @@ obj-$(CONFIG_$(SPL_)ZLIB) += zlib/
 obj-$(CONFIG_$(SPL_)GZIP) += gunzip.o
 obj-$(CONFIG_$(SPL_)LZO) += lzo/
 
+obj-$(CONFIG_LIBAVB) += libavb/
 
 obj-$(CONFIG_$(SPL_TPL_)SAVEENV) += qsort.o
 obj-$(CONFIG_$(SPL_TPL_)OF_LIBFDT) += libfdt/
diff --git a/lib/libavb/Makefile b/lib/libavb/Makefile
new file mode 100644
index 0000000..c8ff080
--- /dev/null
+++ b/lib/libavb/Makefile
@@ -0,0 +1,15 @@
+#
+# (C) Copyright 2017 Linaro Limited
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-$(CONFIG_LIBAVB) += avb_chain_partition_descriptor.o avb_cmdline.o
+obj-$(CONFIG_LIBAVB) += avb_crypto.o avb_footer.o avb_hashtree_descriptor.o
+obj-$(CONFIG_LIBAVB) += avb_property_descriptor.o avb_sha256.o
+obj-$(CONFIG_LIBAVB) += avb_slot_verify.o avb_util.o avb_version.o
+obj-$(CONFIG_LIBAVB) += avb_descriptor.o avb_hash_descriptor.o
+obj-$(CONFIG_LIBAVB) += avb_kernel_cmdline_descriptor.o avb_rsa.o avb_sha512.o
+obj-$(CONFIG_LIBAVB) += avb_sysdeps_posix.o avb_vbmeta_image.o
+
+ccflags-y = -DAVB_COMPILATION