Resume on Reboot default implementation
A default implementation of the RebootEscrow HAL which relies on RAM
retention to keep a key around during a reboot to apply an OTA. This
should work on devices that use a "warm reboot" and most likely will
work on devices that use a "cold reboot" as well.
DRAM will retain information for several seconds depending on the
temperature and other factors. This is enough to survive a reboot. With
the Hadamard code used in this change for error recovery, many errors
can be recovered.
Bug: 63928581
Test: make
Test: atest VtsHalRebootEscrowTargetTest
Change-Id: Ib8db7888d64fee8d827d7c06892b9a1f2af87add
diff --git a/rebootescrow/aidl/default/Android.bp b/rebootescrow/aidl/default/Android.bp
index eb228ad..c8cbf48 100644
--- a/rebootescrow/aidl/default/Android.bp
+++ b/rebootescrow/aidl/default/Android.bp
@@ -15,6 +15,47 @@
//
cc_library_static {
+ name: "librebootescrowdefaultimpl",
+ vendor: true,
+ shared_libs: [
+ "libbase",
+ "libbinder_ndk",
+ "vintf-rebootescrow-ndk_platform",
+ ],
+ export_include_dirs: ["include"],
+ srcs: [
+ "RebootEscrow.cpp",
+ ],
+ visibility: [
+ ":__subpackages__",
+ ],
+}
+
+cc_binary {
+ name: "android.hardware.rebootescrow-service.default",
+ init_rc: ["rebootescrow-default.rc"],
+ relative_install_path: "hw",
+ vintf_fragments: ["rebootescrow-default.xml"],
+ vendor: true,
+ srcs: [
+ "service.cpp",
+ ],
+ cflags: [
+ "-Wall",
+ "-Werror",
+ ],
+ shared_libs: [
+ "libbase",
+ "libbinder_ndk",
+ "vintf-rebootescrow-ndk_platform",
+ ],
+ static_libs: [
+ "libhadamardutils",
+ "librebootescrowdefaultimpl",
+ ],
+}
+
+cc_library_static {
name: "libhadamardutils",
vendor_available: true,
host_supported: true,