test(realm): validate NS EL1/EL2 context is preserved by RMM
- Test validates that NS EL1/EL2 registers are preserved while
entering and exiting realm world.
- Test validates that accessing s2por_el1 in realm causes data abort.
Change-Id: I20cbb9d0d59474507f89ee7cf8e127fff4706610
Signed-off-by: Shruti Gupta <shruti.gupta@arm.com>
diff --git a/realm/realm_payload_main.c b/realm/realm_payload_main.c
index d364aa0..be555fa 100644
--- a/realm/realm_payload_main.c
+++ b/realm/realm_payload_main.c
@@ -144,6 +144,18 @@
}
}
+static bool test_realm_s2poe_undef_abort(void)
+{
+ realm_reset_undef_abort_count();
+
+ /* Install exception handler to catch undefined abort */
+ register_custom_sync_exception_handler(realm_sync_exception_handler);
+ write_s2por_el1(0UL);
+ unregister_custom_sync_exception_handler();
+
+ return (realm_get_undef_abort_count() != 0UL);
+}
+
/*
* This function requests RSI/ABI version from RMM.
*/
@@ -390,6 +402,9 @@
case REALM_PLANE_N_REG_RW_CMD:
test_succeed = test_realm_enter_plane_n_reg_rw();
break;
+ case REALM_S2POE_ACCESS:
+ test_succeed = test_realm_s2poe_undef_abort();
+ break;
case REALM_MPAM_ACCESS:
test_succeed = test_realm_mpam_undef_abort();
break;