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.
169 lines
6.9 KiB
C
169 lines
6.9 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) 2018 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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#include "supervisor/shared/safe_mode.h"
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#include "mphalport.h"
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#include "shared-bindings/digitalio/DigitalInOut.h"
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#include "supervisor/serial.h"
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#include "supervisor/shared/rgb_led_colors.h"
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#include "supervisor/shared/rgb_led_status.h"
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#include "supervisor/shared/translate.h"
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#include "supervisor/shared/tick.h"
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#define SAFE_MODE_DATA_GUARD 0xad0000af
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#define SAFE_MODE_DATA_GUARD_MASK 0xff0000ff
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static safe_mode_t current_safe_mode;
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safe_mode_t wait_for_safe_mode_reset(void) {
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uint32_t reset_state = port_get_saved_word();
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safe_mode_t safe_mode = NO_SAFE_MODE;
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if ((reset_state & SAFE_MODE_DATA_GUARD_MASK) == SAFE_MODE_DATA_GUARD) {
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safe_mode = (reset_state & ~SAFE_MODE_DATA_GUARD_MASK) >> 8;
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}
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if (safe_mode != NO_SAFE_MODE) {
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port_set_saved_word(SAFE_MODE_DATA_GUARD);
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current_safe_mode = safe_mode;
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return safe_mode;
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}
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port_set_saved_word(SAFE_MODE_DATA_GUARD | (MANUAL_SAFE_MODE << 8));
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// Wait for a while to allow for reset.
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temp_status_color(SAFE_MODE);
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#ifdef MICROPY_HW_LED_STATUS
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digitalio_digitalinout_obj_t status_led;
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common_hal_digitalio_digitalinout_construct(&status_led, MICROPY_HW_LED_STATUS);
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common_hal_digitalio_digitalinout_switch_to_output(&status_led, true, DRIVE_MODE_PUSH_PULL);
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#endif
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uint64_t start_ticks = supervisor_ticks_ms64();
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uint64_t diff = 0;
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while (diff < 700) {
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#ifdef MICROPY_HW_LED_STATUS
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// Blink on for 100, off for 100, on for 100, off for 100 and on for 200
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common_hal_digitalio_digitalinout_set_value(&status_led, diff > 100 && diff / 100 != 2 && diff / 100 != 4);
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#endif
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diff = supervisor_ticks_ms64() - start_ticks;
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}
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#ifdef MICROPY_HW_LED_STATUS
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common_hal_digitalio_digitalinout_deinit(&status_led);
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#endif
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clear_temp_status();
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port_set_saved_word(SAFE_MODE_DATA_GUARD);
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return NO_SAFE_MODE;
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}
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void safe_mode_on_next_reset(safe_mode_t reason) {
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port_set_saved_word(SAFE_MODE_DATA_GUARD | (reason << 8));
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}
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// Don't inline this so it's easy to break on it from GDB.
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void __attribute__((noinline,)) reset_into_safe_mode(safe_mode_t reason) {
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if (current_safe_mode > BROWNOUT && reason > BROWNOUT) {
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while (true) {
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// This very bad because it means running in safe mode didn't save us. Only ignore brownout
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// because it may be due to a switch bouncing.
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}
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}
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safe_mode_on_next_reset(reason);
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reset_cpu();
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}
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#define FILE_AN_ISSUE translate("\nPlease file an issue with the contents of your CIRCUITPY drive at \nhttps://github.com/adafruit/circuitpython/issues\n")
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void print_safe_mode_message(safe_mode_t reason) {
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if (reason == NO_SAFE_MODE) {
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return;
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}
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serial_write("\n");
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// Output a user safe mode string if it's set.
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#ifdef BOARD_USER_SAFE_MODE
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if (reason == USER_SAFE_MODE) {
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serial_write_compressed(translate("You requested starting safe mode by "));
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serial_write(BOARD_USER_SAFE_MODE_ACTION);
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serial_write_compressed(translate("\nTo exit, please reset the board without "));
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serial_write(BOARD_USER_SAFE_MODE_ACTION);
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serial_write("\n");
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} else
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#endif
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switch (reason) {
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case MANUAL_SAFE_MODE:
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serial_write_compressed(translate("CircuitPython is in safe mode because you pressed the reset button during boot. Press again to exit safe mode.\n"));
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return;
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case PROGRAMMATIC_SAFE_MODE:
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serial_write_compressed(translate("The `microcontroller` module was used to boot into safe mode. Press reset to exit safe mode.\n"));
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return;
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default:
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break;
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}
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serial_write_compressed(translate("You are in safe mode: something unanticipated happened.\n"));
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switch (reason) {
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case BROWNOUT:
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serial_write_compressed(translate("The microcontroller's power dipped. Make sure your power supply provides\nenough power for the whole circuit and press reset (after ejecting CIRCUITPY).\n"));
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return;
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case HEAP_OVERWRITTEN:
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serial_write_compressed(translate("The CircuitPython heap was corrupted because the stack was too small.\nPlease increase the stack size if you know how, or if not:"));
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serial_write_compressed(FILE_AN_ISSUE);
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return;
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default:
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break;
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}
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serial_write_compressed(translate("CircuitPython core code crashed hard. Whoops!\n"));
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switch (reason) {
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case HARD_CRASH:
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serial_write_compressed(translate("Crash into the HardFault_Handler."));
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return;
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case MICROPY_NLR_JUMP_FAIL:
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serial_write_compressed(translate("MicroPython NLR jump failed. Likely memory corruption."));
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return;
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case MICROPY_FATAL_ERROR:
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serial_write_compressed(translate("MicroPython fatal error."));
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break;
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case GC_ALLOC_OUTSIDE_VM:
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serial_write_compressed(translate("Attempted heap allocation when MicroPython VM not running."));
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break;
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case NORDIC_SOFT_DEVICE_ASSERT:
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serial_write_compressed(translate("Nordic Soft Device failure assertion."));
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break;
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case FLASH_WRITE_FAIL:
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serial_write_compressed(translate("Failed to write internal flash."));
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break;
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case MEM_MANAGE:
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serial_write_compressed(translate("Invalid memory access."));
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break;
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default:
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serial_write_compressed(translate("Unknown reason."));
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break;
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}
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serial_write_compressed(FILE_AN_ISSUE);
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}
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