mirror of
https://github.com/trezor/trezor-firmware.git
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82 lines
3.2 KiB
C
82 lines
3.2 KiB
C
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TREZORHAL_SYSTEM_H
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#define TREZORHAL_SYSTEM_H
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#include <systask.h>
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#ifdef KERNEL_MODE
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// Initializes the fundamental system services
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// (MPU, SysTick, systimer and task scheduler).
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//
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// `error_handler` is a callback that is called when a kernel task terminates
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// with an error
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void system_init(systask_error_handler_t error_handler);
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// Calls the error handler in the emergency mode.
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//
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// This function is called when the system encounters a critical error
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// and needs to perform a useful action (such as displaying an error message)
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// before it is reset or shut down.
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//
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// The function may be called from any context, including interrupt context.
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// It completely resets stack pointers, clears the .bss segment, reinitializes
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// the .data segment, and calls the `error_handler` callback.
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//
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// The system will be in a state similar to a reset when `main()` is called
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// (but with some hardware peripherals still initialized and running).
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__attribute__((noreturn)) void system_emergency_rescue(
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systask_error_handler_t error_handler, const systask_postmortem_t* pminfo);
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#endif // KERNEL_MODE
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// Terminates the current task normally with the given exit code.
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//
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// If the current task is the kernel task, the error handler is called with the
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// postmortem information. If the task is not the kernel task, the task is
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// terminated immediately and the kernel task is scheduled.
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void system_exit(int exitcode);
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// Terminates the current task with an error message.
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//
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// See the notes for `system_exit` regarding the behavior of the error handler
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void system_exit_error(const char* title, const char* message,
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const char* footer);
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// Like `system_exit_error`, but with explicit lengths for the strings.
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void system_exit_error_ex(const char* title, size_t title_len,
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const char* message, size_t message_len,
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const char* footer, size_t footer_len);
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// Terminates the current task with a fatal error message.
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//
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// See the notes for `system_exit` regarding the behavior of the error handler
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void system_exit_fatal(const char* message, const char* file, int line);
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// Like `system_exit_fatal`, but with explicit lengths for the strings.
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void system_exit_fatal_ex(const char* message, size_t message_len,
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const char* file, size_t file_len, int line);
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// Returns string representation of the system fault.
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const char* system_fault_message(const system_fault_t* fault);
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#endif // TREZORHAL_SYSTEM_H
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