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https://github.com/ARM-software/arm-trusted-firmware.git
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626ed510f1
This patch reworks the crash reporting mechanism to further optimise the stack and code size. The reporting makes use of assembly console functions to avoid calling C Runtime to report the CPU state. The crash buffer requirement is reduced to 64 bytes with this implementation. The crash buffer is now part of per-cpu data which makes retrieving the crash buffer trivial. Also now panic() will use crash reporting if invoked from BL3-1. Fixes ARM-software/tf-issues#199 Change-Id: I79d27a4524583d723483165dc40801f45e627da5
109 lines
4.2 KiB
C
109 lines
4.2 KiB
C
/*
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* Copyright (c) 2014, 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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#ifndef __CPU_DATA_H__
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#define __CPU_DATA_H__
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/* Offsets for the cpu_data structure */
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#define CPU_DATA_CRASH_BUF_OFFSET 0x10
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#if CRASH_REPORTING
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#define CPU_DATA_LOG2SIZE 7
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#else
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#define CPU_DATA_LOG2SIZE 6
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#endif
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/* need enough space in crash buffer to save 8 registers */
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#define CPU_DATA_CRASH_BUF_SIZE 64
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#ifndef __ASSEMBLY__
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#include <arch_helpers.h>
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#include <platform_def.h>
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#include <stdint.h>
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/*******************************************************************************
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* Function & variable prototypes
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******************************************************************************/
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/*******************************************************************************
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* Cache of frequently used per-cpu data:
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* Pointers to non-secure and secure security state contexts
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* Address of the crash stack
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* It is aligned to the cache line boundary to allow efficient concurrent
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* manipulation of these pointers on different cpus
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*
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* TODO: Add other commonly used variables to this (tf_issues#90)
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*
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* The data structure and the _cpu_data accessors should not be used directly
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* by components that have per-cpu members. The member access macros should be
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* used for this.
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******************************************************************************/
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typedef struct cpu_data {
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void *cpu_context[2];
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#if CRASH_REPORTING
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uint64_t crash_buf[CPU_DATA_CRASH_BUF_SIZE >> 3];
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#endif
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} __aligned(CACHE_WRITEBACK_GRANULE) cpu_data_t;
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#if CRASH_REPORTING
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/* verify assembler offsets match data structures */
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CASSERT(CPU_DATA_CRASH_BUF_OFFSET == __builtin_offsetof
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(cpu_data_t, crash_buf),
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assert_cpu_data_crash_stack_offset_mismatch);
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#endif
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CASSERT((1 << CPU_DATA_LOG2SIZE) == sizeof(cpu_data_t),
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assert_cpu_data_log2size_mismatch);
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struct cpu_data *_cpu_data_by_index(uint32_t cpu_index);
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struct cpu_data *_cpu_data_by_mpidr(uint64_t mpidr);
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/* Return the cpu_data structure for the current CPU. */
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static inline struct cpu_data *_cpu_data(void)
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{
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return (cpu_data_t *)read_tpidr_el3();
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}
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/**************************************************************************
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* APIs for initialising and accessing per-cpu data
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*************************************************************************/
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void init_cpu_data_ptr(void);
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#define get_cpu_data(_m) _cpu_data()->_m
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#define set_cpu_data(_m, _v) _cpu_data()->_m = _v
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#define get_cpu_data_by_index(_ix, _m) _cpu_data_by_index(_ix)->_m
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#define set_cpu_data_by_index(_ix, _m, _v) _cpu_data_by_index(_ix)->_m = _v
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#define get_cpu_data_by_mpidr(_id, _m) _cpu_data_by_mpidr(_id)->_m
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#define set_cpu_data_by_mpidr(_id, _m, _v) _cpu_data_by_mpidr(_id)->_m = _v
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#endif /* __ASSEMBLY__ */
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#endif /* __CPU_DATA_H__ */
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