RAS: Add fault injection support
The ARMv8.4 RAS extensions introduce architectural support for software
to inject faults into the system in order to test fault-handling
software. This patch introduces the build option FAULT_HANDLING_SUPPORT
to allow for lower ELs to use registers in the Standard Error Record to
inject fault. The build option RAS_EXTENSIONS must also be enabled along
with fault injection.
This feature is intended for testing purposes only, and is advisable to
keep disabled for production images.
Change-Id: I6f7a4454b15aec098f9505a10eb188c2f928f7ea
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/Makefile b/Makefile
index c588931..5132701 100644
--- a/Makefile
+++ b/Makefile
@@ -395,6 +395,13 @@
endif
endif
+# When FAULT_INJECTION_SUPPORT is used, require that RAS_EXTENSION is enabled
+ifeq ($(FAULT_INJECTION_SUPPORT),1)
+ ifneq ($(RAS_EXTENSION),1)
+ $(error For FAULT_INJECTION_SUPPORT, RAS_EXTENSION must also be 1)
+ endif
+endif
+
################################################################################
# Process platform overrideable behaviour
################################################################################
@@ -522,6 +529,7 @@
$(eval $(call assert_boolean,ENABLE_SPM))
$(eval $(call assert_boolean,ENABLE_SVE_FOR_NS))
$(eval $(call assert_boolean,ERROR_DEPRECATED))
+$(eval $(call assert_boolean,FAULT_INJECTION_SUPPORT))
$(eval $(call assert_boolean,GENERATE_COT))
$(eval $(call assert_boolean,GICV2_G0_FOR_EL3))
$(eval $(call assert_boolean,HANDLE_EA_EL3_FIRST))
@@ -571,6 +579,7 @@
$(eval $(call add_define,ENABLE_SPM))
$(eval $(call add_define,ENABLE_SVE_FOR_NS))
$(eval $(call add_define,ERROR_DEPRECATED))
+$(eval $(call add_define,FAULT_INJECTION_SUPPORT))
$(eval $(call add_define,GICV2_G0_FOR_EL3))
$(eval $(call add_define,HANDLE_EA_EL3_FIRST))
$(eval $(call add_define,HW_ASSISTED_COHERENCY))