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/plat/arm/board/fvp/aarch64/fvp_helpers.S b/plat/arm/board/fvp/aarch64/fvp_helpers.S
index fe7358f..884fee8 100644
--- a/plat/arm/board/fvp/aarch64/fvp_helpers.S
+++ b/plat/arm/board/fvp/aarch64/fvp_helpers.S
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013-2015, 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:
@@ -111,8 +111,7 @@
*/
dsb sy
wfi
-cb_panic:
- b cb_panic
+ bl plat_panic_handler
#else
mov_imm x0, PLAT_ARM_TRUSTED_MAILBOX_BASE
@@ -174,7 +173,7 @@
*/
mov_imm x0, PLAT_ARM_TRUSTED_MAILBOX_BASE
ldr x0, [x0]
- cbz x0, _panic
+ cbz x0, _panic_handler
ret
/* ---------------------------------------------------------------------
@@ -182,8 +181,8 @@
* is empty. This should never happen!
* ---------------------------------------------------------------------
*/
-_panic:
- b _panic
+_panic_handler:
+ bl plat_panic_handler
endfunc plat_get_my_entrypoint
/* -----------------------------------------------------
diff --git a/plat/arm/board/juno/aarch64/juno_helpers.S b/plat/arm/board/juno/aarch64/juno_helpers.S
index 1931535..377b0cb 100644
--- a/plat/arm/board/juno/aarch64/juno_helpers.S
+++ b/plat/arm/board/juno/aarch64/juno_helpers.S
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013-2015, 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:
@@ -201,8 +201,7 @@
JUMP_TO_HANDLER_IF_JUNO_R(2)
/* Board revision is not supported */
-not_supported:
- b not_supported
+ bl plat_panic_handler
endfunc plat_reset_handler