Remove all non-configurable dead loops
Added a new platform porting function plat_panic_handler, to allow
platforms to handle unexpected error situations. It must be
implemented in assembly as it may be called before the C environment
is initialized. A default implementation is provided, which simply
spins.
Corrected all dead loops in generic code to call this function
instead. This includes the dead loop that occurs at the end of the
call to panic().
All unnecesary wfis from bl32/tsp/aarch64/tsp_exceptions.S have
been removed.
Change-Id: I67cb85f6112fa8e77bd62f5718efcef4173d8134
diff --git a/bl32/tsp/aarch64/tsp_exceptions.S b/bl32/tsp/aarch64/tsp_exceptions.S
index d5e089f..edcfb71 100644
--- a/bl32/tsp/aarch64/tsp_exceptions.S
+++ b/bl32/tsp/aarch64/tsp_exceptions.S
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
@@ -108,24 +108,23 @@
* -----------------------------------------------------
*/
sync_exception_sp_el0:
- wfi
- b sync_exception_sp_el0
+ bl plat_panic_handler
check_vector_size sync_exception_sp_el0
.align 7
irq_sp_el0:
- b irq_sp_el0
+ bl plat_panic_handler
check_vector_size irq_sp_el0
.align 7
fiq_sp_el0:
- b fiq_sp_el0
+ bl plat_panic_handler
check_vector_size fiq_sp_el0
.align 7
serror_sp_el0:
- b serror_sp_el0
+ bl plat_panic_handler
check_vector_size serror_sp_el0
@@ -136,8 +135,7 @@
*/
.align 7
sync_exception_sp_elx:
- wfi
- b sync_exception_sp_elx
+ bl plat_panic_handler
check_vector_size sync_exception_sp_elx
.align 7
@@ -152,7 +150,7 @@
.align 7
serror_sp_elx:
- b serror_sp_elx
+ bl plat_panic_handler
check_vector_size serror_sp_elx
@@ -163,23 +161,22 @@
*/
.align 7
sync_exception_aarch64:
- wfi
- b sync_exception_aarch64
+ bl plat_panic_handler
check_vector_size sync_exception_aarch64
.align 7
irq_aarch64:
- b irq_aarch64
+ bl plat_panic_handler
check_vector_size irq_aarch64
.align 7
fiq_aarch64:
- b fiq_aarch64
+ bl plat_panic_handler
check_vector_size fiq_aarch64
.align 7
serror_aarch64:
- b serror_aarch64
+ bl plat_panic_handler
check_vector_size serror_aarch64
@@ -190,22 +187,21 @@
*/
.align 7
sync_exception_aarch32:
- wfi
- b sync_exception_aarch32
+ bl plat_panic_handler
check_vector_size sync_exception_aarch32
.align 7
irq_aarch32:
- b irq_aarch32
+ bl plat_panic_handler
check_vector_size irq_aarch32
.align 7
fiq_aarch32:
- b fiq_aarch32
+ bl plat_panic_handler
check_vector_size fiq_aarch32
.align 7
serror_aarch32:
- b serror_aarch32
+ bl plat_panic_handler
check_vector_size serror_aarch32
.align 7