7d8dac9211
Introduces a way to place CircuitPython code and data into tightly coupled memory (TCM) which is accessible by the CPU in a single cycle. It also frees up room in the corresponding cache for intermittent data. Loading from external flash is slow! The data cache is also now enabled. Adds support for the iMX RT 1021 chip. Adds three new boards: * iMX RT 1020 EVK * iMX RT 1060 EVK * Teensy 4.0 Related to #2492, #2472 and #2477. Fixes #2475.
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2016-2017 Scott Shawcroft for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef MICROPY_INCLUDED_SUPERVISOR_PORT_H
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#define MICROPY_INCLUDED_SUPERVISOR_PORT_H
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#include "py/mpconfig.h"
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#include "supervisor/shared/safe_mode.h"
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// Provided by the linker;
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extern uint32_t _ezero;
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// This file defines core methods that must be implemented by a port.
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extern uint32_t _estack;
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// Stored at the end of the bss section (which includes the heap).
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extern uint32_t _ebss;
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safe_mode_t port_init(void);
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// Reset the microcontroller completely.
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void reset_cpu(void);
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// Reset the microcontroller state.
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void reset_port(void);
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// Reset the rest of the board.
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void reset_board(void);
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// Reset to the bootloader
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void reset_to_bootloader(void);
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// Get stack limit address
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uint32_t *port_stack_get_limit(void);
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// Get stack top address
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uint32_t *port_stack_get_top(void);
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// Get heap bottom address
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uint32_t *port_heap_get_bottom(void);
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// Get heap top address
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uint32_t *port_heap_get_top(void);
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// Save and retrieve a word from memory that is preserved over reset. Used for safe mode.
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void port_set_saved_word(uint32_t);
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uint32_t port_get_saved_word(void);
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#endif // MICROPY_INCLUDED_SUPERVISOR_PORT_H
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