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https://github.com/ARM-software/arm-trusted-firmware.git
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1c3ea103d2
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
143 lines
5 KiB
ArmAsm
143 lines
5 KiB
ArmAsm
/*
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* Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <arch.h>
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#include <asm_macros.S>
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#include <platform_def.h>
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.weak plat_report_exception
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.weak plat_crash_console_init
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.weak plat_crash_console_putc
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.weak plat_reset_handler
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.weak plat_disable_acp
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.weak bl1_plat_prepare_exit
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.weak plat_error_handler
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.weak plat_panic_handler
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#if !ENABLE_PLAT_COMPAT
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.globl platform_get_core_pos
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#define MPIDR_RES_BIT_MASK 0xff000000
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/* ------------------------------------------------------------------
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* int platform_get_core_pos(int mpidr)
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* Returns the CPU index of the CPU specified by mpidr. This is
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* defined when platform compatibility is disabled to enable Trusted
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* Firmware components like SPD using the old platform API to work.
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* This API is deprecated and it assumes that the mpidr specified is
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* that of a valid and present CPU. Instead, plat_my_core_pos()
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* should be used for CPU index of the current CPU and
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* plat_core_pos_by_mpidr() should be used for CPU index of a
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* CPU specified by its mpidr.
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* ------------------------------------------------------------------
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*/
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func_deprecated platform_get_core_pos
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bic x0, x0, #MPIDR_RES_BIT_MASK
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mrs x1, mpidr_el1
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bic x1, x1, #MPIDR_RES_BIT_MASK
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cmp x0, x1
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beq plat_my_core_pos
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b platform_core_pos_helper
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endfunc_deprecated platform_get_core_pos
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#endif
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/* -----------------------------------------------------
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* Placeholder function which should be redefined by
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* each platform.
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* -----------------------------------------------------
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*/
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func plat_report_exception
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ret
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endfunc plat_report_exception
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/* -----------------------------------------------------
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* Placeholder function which should be redefined by
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* each platform.
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* -----------------------------------------------------
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*/
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func plat_crash_console_init
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mov x0, #0
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ret
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endfunc plat_crash_console_init
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/* -----------------------------------------------------
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* Placeholder function which should be redefined by
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* each platform.
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* -----------------------------------------------------
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*/
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func plat_crash_console_putc
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ret
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endfunc plat_crash_console_putc
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/* -----------------------------------------------------
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* Placeholder function which should be redefined by
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* each platform. This function should preserve x10.
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* -----------------------------------------------------
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*/
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func plat_reset_handler
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ret
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endfunc plat_reset_handler
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/* -----------------------------------------------------
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* Placeholder function which should be redefined by
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* each platform. This function is allowed to use
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* registers x0 - x17.
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* -----------------------------------------------------
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*/
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func plat_disable_acp
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ret
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endfunc plat_disable_acp
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/* -----------------------------------------------------
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* void bl1_plat_prepare_exit(entry_point_info_t *ep_info);
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* Called before exiting BL1. Default: do nothing
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* -----------------------------------------------------
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*/
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func bl1_plat_prepare_exit
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ret
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endfunc bl1_plat_prepare_exit
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/* -----------------------------------------------------
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* void plat_error_handler(int err) __dead2;
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* Endless loop by default.
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* -----------------------------------------------------
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*/
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func plat_error_handler
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b plat_error_handler
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endfunc plat_error_handler
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/* -----------------------------------------------------
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* void plat_panic_handler(void) __dead2;
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* Endless loop by default.
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* -----------------------------------------------------
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*/
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func plat_panic_handler
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b plat_panic_handler
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endfunc plat_panic_handler
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