Add Corted-R52, PPC32 cpus and trusty, asylo oses.
diff --git a/cpu/BUILD b/cpu/BUILD
index e4c5032..4d4ffd3 100644
--- a/cpu/BUILD
+++ b/cpu/BUILD
@@ -55,6 +55,12 @@
     constraint_setting = ":cpu",
 )
 
+# Cortex-R52
+constraint_value(
+    name = "armv8-r",
+    constraint_setting = ":cpu",
+)
+
 constraint_value(
     name = "arm64_32",
     constraint_setting = ":cpu",
@@ -91,6 +97,11 @@
 )
 
 constraint_value(
+    name = "ppc32",
+    constraint_setting = ":cpu",
+)
+
+constraint_value(
     name = "s390x",
     constraint_setting = ":cpu",
 )
diff --git a/os/BUILD b/os/BUILD
index e0484ee..123a0e5 100644
--- a/os/BUILD
+++ b/os/BUILD
@@ -111,3 +111,14 @@
     name = "chromiumos",
     constraint_setting = ":os",
 )
+
+constraint_value(
+    name = "trusty",
+    constraint_setting = ":os",
+)
+
+constraint_value(
+    name = "asylo",
+    constraint_setting = ":os",
+)
+