RAS: Introduce handler for Uncontainable errors
Uncontainable errors are the most severe form of errors, which typically
mean that the system state can't be trusted any more. This further means
that normal error recovery process can't be followed, and an orderly
shutdown of the system is often desirable.
This patch allows for the platform to define a handler for Uncontainable
errors received. Due to the nature of Uncontainable error, the handler
is expected to initiate an orderly shutdown of the system, and therefore
is not expected to return. A default implementation is added which falls
back to platform unhandled exception.
Also fix ras_arch.h header guards.
Change-Id: I072e336a391a0b382e77e627eb9e40729d488b55
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/plat/common/aarch64/platform_helpers.S b/plat/common/aarch64/platform_helpers.S
index a413f5f..13dfac8 100644
--- a/plat/common/aarch64/platform_helpers.S
+++ b/plat/common/aarch64/platform_helpers.S
@@ -20,6 +20,8 @@
.weak bl31_plat_enable_mmu
.weak bl32_plat_enable_mmu
+ .weak plat_handle_uncontainable_ea
+
#if !ENABLE_PLAT_COMPAT
.globl platform_get_core_pos
@@ -186,3 +188,15 @@
func bl32_plat_enable_mmu
b enable_mmu_direct_el1
endfunc bl32_plat_enable_mmu
+
+
+ /* -----------------------------------------------------
+ * Platform handler for Uncontainable External Abort.
+ *
+ * x0: EA reason
+ * x1: EA syndrome
+ * -----------------------------------------------------
+ */
+func plat_handle_uncontainable_ea
+ b report_unhandled_exception
+endfunc plat_handle_uncontainable_ea