RAS: Introduce handler for EL3 EAs
External Aborts while executing in EL3 is fatal in nature. This patch
allows for the platform to define a handler for External Aborts received
while executing in EL3. A default implementation is added which falls
back to platform unhandled exception.
Change-Id: I466f2c8113a33870f2c7d2d8f2bf20437d9fd354
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/bl31/aarch64/runtime_exceptions.S b/bl31/aarch64/runtime_exceptions.S
index ff77597..54db681 100644
--- a/bl31/aarch64/runtime_exceptions.S
+++ b/bl31/aarch64/runtime_exceptions.S
@@ -213,7 +213,7 @@
vector_entry serror_sp_el0
- b report_unhandled_exception
+ no_ret plat_handle_el3_ea
end_vector_entry serror_sp_el0
/* ---------------------------------------------------------------------
@@ -239,7 +239,7 @@
end_vector_entry fiq_sp_elx
vector_entry serror_sp_elx
- b report_unhandled_exception
+ no_ret plat_handle_el3_ea
end_vector_entry serror_sp_elx
/* ---------------------------------------------------------------------
diff --git a/plat/common/aarch64/platform_helpers.S b/plat/common/aarch64/platform_helpers.S
index 8a07f8f..a5d26c0 100644
--- a/plat/common/aarch64/platform_helpers.S
+++ b/plat/common/aarch64/platform_helpers.S
@@ -22,6 +22,7 @@
.weak plat_handle_uncontainable_ea
.weak plat_handle_double_fault
+ .weak plat_handle_el3_ea
#if !ENABLE_PLAT_COMPAT
.globl platform_get_core_pos
@@ -212,3 +213,11 @@
func plat_handle_double_fault
b report_unhandled_exception
endfunc plat_handle_double_fault
+
+ /* -----------------------------------------------------
+ * Platform handler for EL3 External Abort.
+ * -----------------------------------------------------
+ */
+func plat_handle_el3_ea
+ b report_unhandled_exception
+endfunc plat_handle_el3_ea