fix(el3-runtime): restrict lower el EA handlers in FFH mode
This patch does following changes to restrict handling of lower EL
EA's only if FFH mode is enabled.
- Compile ea_delegate.S only if FFH mode is enabled.
- For Sync exception from lower ELs if the EC is not SMC or SYS reg
trap it was assumed that it is an EA, which is not correct. Move
the known Sync exceptions (EL3 Impdef) out of sync EA handler.
- Report unhandled exceptions if there are SError from lower EL in
KFH mode, as this is unexpected.
- Move code out of ea_delegate.S which are used for KFH mode.
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I577089677d0ec8cde7c20952172bee955573d2ed
diff --git a/include/arch/aarch64/arch.h b/include/arch/aarch64/arch.h
index 13927bd..e9d22b6 100644
--- a/include/arch/aarch64/arch.h
+++ b/include/arch/aarch64/arch.h
@@ -962,6 +962,7 @@
#define EC_AARCH64_HVC U(0x16)
#define EC_AARCH64_SMC U(0x17)
#define EC_AARCH64_SYS U(0x18)
+#define EC_IMP_DEF_EL3 U(0x1f)
#define EC_IABORT_LOWER_EL U(0x20)
#define EC_IABORT_CUR_EL U(0x21)
#define EC_PC_ALIGN U(0x22)