AArch64: Introduce External Abort handling
At present, any External Abort routed to EL3 is reported as an unhandled
exception and cause a panic. This patch enables ARM Trusted Firmware to
handle External Aborts routed to EL3.
With this patch, when an External Abort is received at EL3, its handling
is delegated to plat_ea_handler() function. Platforms can provide their
own implementation of this function. This patch adds a weak definition
of the said function that prints out a message and just panics.
In order to support handling External Aborts at EL3, the build option
HANDLE_EA_EL3_FIRST must be set to 1.
Before this patch, HANDLE_EA_EL3_FIRST wasn't passed down to
compilation; this patch fixes that too.
Change-Id: I4d07b7e65eb191ff72d63b909ae9512478cd01a1
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
diff --git a/Makefile b/Makefile
index b270e15..23b48e8 100644
--- a/Makefile
+++ b/Makefile
@@ -517,6 +517,7 @@
$(eval $(call assert_boolean,ERROR_DEPRECATED))
$(eval $(call assert_boolean,GENERATE_COT))
$(eval $(call assert_boolean,GICV2_G0_FOR_EL3))
+$(eval $(call assert_boolean,HANDLE_EA_EL3_FIRST))
$(eval $(call assert_boolean,HW_ASSISTED_COHERENCY))
$(eval $(call assert_boolean,LOAD_IMAGE_V2))
$(eval $(call assert_boolean,MULTI_CONSOLE_API))
@@ -563,6 +564,7 @@
$(eval $(call add_define,ENABLE_SVE_FOR_NS))
$(eval $(call add_define,ERROR_DEPRECATED))
$(eval $(call add_define,GICV2_G0_FOR_EL3))
+$(eval $(call add_define,HANDLE_EA_EL3_FIRST))
$(eval $(call add_define,HW_ASSISTED_COHERENCY))
$(eval $(call add_define,LOAD_IMAGE_V2))
$(eval $(call add_define,LOG_LEVEL))