Merge changes Ibb593369,I9cc984dd into integration
* changes:
fix(el3_runtime): allow SErrors when executing in EL3
fix(el3_runtime): do not save scr_el3 during EL3 entry
diff --git a/bl31/aarch64/runtime_exceptions.S b/bl31/aarch64/runtime_exceptions.S
index 0283553..614ea71 100644
--- a/bl31/aarch64/runtime_exceptions.S
+++ b/bl31/aarch64/runtime_exceptions.S
@@ -493,15 +493,16 @@
msr spsel, #MODE_SP_EL0
/*
- * Save the SPSR_EL3, ELR_EL3, & SCR_EL3 in case there is a world
+ * Save the SPSR_EL3 and ELR_EL3 in case there is a world
* switch during SMC handling.
* TODO: Revisit if all system registers can be saved later.
*/
mrs x16, spsr_el3
mrs x17, elr_el3
- mrs x18, scr_el3
stp x16, x17, [x6, #CTX_EL3STATE_OFFSET + CTX_SPSR_EL3]
- str x18, [x6, #CTX_EL3STATE_OFFSET + CTX_SCR_EL3]
+
+ /* Load SCR_EL3 */
+ mrs x18, scr_el3
/* Clear flag register */
mov x7, xzr
diff --git a/lib/el3_runtime/aarch64/context.S b/lib/el3_runtime/aarch64/context.S
index b126b9c..60501f6 100644
--- a/lib/el3_runtime/aarch64/context.S
+++ b/lib/el3_runtime/aarch64/context.S
@@ -788,6 +788,15 @@
#endif /* CTX_INCLUDE_FPREGS */
/*
+ * Set SCR_EL3.EA bit to enable SErrors at EL3
+ */
+ .macro enable_serror_at_el3
+ mrs x8, scr_el3
+ orr x8, x8, #SCR_EA_BIT
+ msr scr_el3, x8
+ .endm
+
+ /*
* Set the PSTATE bits not set when the exception was taken as
* described in the AArch64.TakeException() pseudocode function
* in ARM DDI 0487F.c page J1-7635 to a default value.
@@ -917,6 +926,7 @@
*/
func prepare_el3_entry
save_gp_pmcr_pauth_regs
+ enable_serror_at_el3
/*
* Set the PSTATE bits not described in the Aarch64.TakeException
* pseudocode to their default values.