From 1c3ea103d28760a04e457678bf60725ae761c28f Mon Sep 17 00:00:00 2001 From: Antonio Nino Diaz Date: Mon, 1 Feb 2016 13:57:25 +0000 Subject: 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 --- plat/common/aarch64/platform_helpers.S | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'plat/common') diff --git a/plat/common/aarch64/platform_helpers.S b/plat/common/aarch64/platform_helpers.S index 29f01ce9..08638303 100644 --- a/plat/common/aarch64/platform_helpers.S +++ b/plat/common/aarch64/platform_helpers.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: @@ -39,6 +39,7 @@ .weak plat_disable_acp .weak bl1_plat_prepare_exit .weak plat_error_handler + .weak plat_panic_handler #if !ENABLE_PLAT_COMPAT .globl platform_get_core_pos @@ -131,3 +132,12 @@ endfunc bl1_plat_prepare_exit func plat_error_handler b plat_error_handler endfunc plat_error_handler + + /* ----------------------------------------------------- + * void plat_panic_handler(void) __dead2; + * Endless loop by default. + * ----------------------------------------------------- + */ +func plat_panic_handler + b plat_panic_handler +endfunc plat_panic_handler -- cgit v1.2.3