fix(el3-runtime): replace CTX_ESR_EL3 with CTX_DOUBLE_FAULT_ESR
ESR_EL3 value is updated when an exception is taken to EL3 and its value
does not change until a new exception is taken to EL3. We need to save
ESR in context memory only when we expect nested exception in EL3.
The scenarios where we would expect nested EL3 execution are related
with FFH_SUPPORT, namely
1.Handling pending async EAs at EL3 boundry
- It uses CTX_SAVED_ESR_EL3 to preserve origins esr_el3
2.Double fault handling
- Introduce an explicit storage (CTX_DOUBLE_FAULT_ESR) for esr_el3
to take care of DobuleFault.
As the ESR context has been removed, read the register directly instead
of its context value in RD platform.
Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I7720c5f03903f894a77413a235e3cc05c86f9c17
diff --git a/include/lib/el3_runtime/aarch64/context.h b/include/lib/el3_runtime/aarch64/context.h
index 15d5204..d9a9188 100644
--- a/include/lib/el3_runtime/aarch64/context.h
+++ b/include/lib/el3_runtime/aarch64/context.h
@@ -67,25 +67,25 @@
******************************************************************************/
#define CTX_EL3STATE_OFFSET (CTX_GPREGS_OFFSET + CTX_GPREGS_END)
#define CTX_SCR_EL3 U(0x0)
-#define CTX_ESR_EL3 U(0x8)
-#define CTX_RUNTIME_SP U(0x10)
-#define CTX_SPSR_EL3 U(0x18)
-#define CTX_ELR_EL3 U(0x20)
-#define CTX_PMCR_EL0 U(0x28)
-#define CTX_IS_IN_EL3 U(0x30)
-#define CTX_MDCR_EL3 U(0x38)
+#define CTX_RUNTIME_SP U(0x8)
+#define CTX_SPSR_EL3 U(0x10)
+#define CTX_ELR_EL3 U(0x18)
+#define CTX_PMCR_EL0 U(0x20)
+#define CTX_IS_IN_EL3 U(0x28)
+#define CTX_MDCR_EL3 U(0x30)
/* Constants required in supporting nested exception in EL3 */
-#define CTX_SAVED_ELR_EL3 U(0x40)
+#define CTX_SAVED_ELR_EL3 U(0x38)
/*
* General purpose flag, to save various EL3 states
* FFH mode : Used to identify if handling nested exception
* KFH mode : Used as counter value
*/
-#define CTX_NESTED_EA_FLAG U(0x48)
+#define CTX_NESTED_EA_FLAG U(0x40)
#if FFH_SUPPORT
- #define CTX_SAVED_ESR_EL3 U(0x50)
- #define CTX_SAVED_SPSR_EL3 U(0x58)
- #define CTX_SAVED_GPREG_LR U(0x60)
+ #define CTX_SAVED_ESR_EL3 U(0x48)
+ #define CTX_SAVED_SPSR_EL3 U(0x50)
+ #define CTX_SAVED_GPREG_LR U(0x58)
+ #define CTX_DOUBLE_FAULT_ESR U(0x60)
#define CTX_EL3STATE_END U(0x70) /* Align to the next 16 byte boundary */
#else
#define CTX_EL3STATE_END U(0x50) /* Align to the next 16 byte boundary */