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ea81bcf1c0
Leaving the bootloader from an IRQ (eg USB or I2C IRQ) will not work if MBOOT_LEAVE_BOOTLOADER_VIA_RESET is disabled, ie if mboot jumps directly to the application. This is because the CPU will still be in IRQ state when the application starts and IRQs of lower priority will be blocked. Fix this by setting a flag when the bootloader should finish, and exit the bootloader always from the main (top level) thread. This also improves the USB behaviour of mboot: it no longer abruptly disconnects when the manifest command is sent. Signed-off-by: Damien George <damien@micropython.org>
120 lines
4.4 KiB
C
120 lines
4.4 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) 2017-2019 Damien P. George
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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_STM32_MBOOT_DFU_H
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#define MICROPY_INCLUDED_STM32_MBOOT_DFU_H
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#include <stdbool.h>
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#include <stdint.h>
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// DFU spec: https://www.usb.org/sites/default/files/DFU_1.1.pdf
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#define DFU_XFER_SIZE (2048)
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// The DFU standard allows for error messages to be sent (via str index) in GETSTATUS responses
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#define MBOOT_ERROR_STR_OVERWRITE_BOOTLOADER_IDX 0x10
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#define MBOOT_ERROR_STR_OVERWRITE_BOOTLOADER "Can't overwrite mboot"
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#define MBOOT_ERROR_STR_INVALID_ADDRESS_IDX 0x11
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#define MBOOT_ERROR_STR_INVALID_ADDRESS "Address out of range"
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#if MBOOT_ENABLE_PACKING
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#define MBOOT_ERROR_STR_INVALID_SIG_IDX 0x12
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#define MBOOT_ERROR_STR_INVALID_SIG "Invalid signature in file"
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#define MBOOT_ERROR_STR_INVALID_READ_IDX 0x13
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#define MBOOT_ERROR_STR_INVALID_READ "Read support disabled on encrypted bootloader"
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#endif
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// DFU class requests
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enum {
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DFU_DETACH = 0,
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DFU_DNLOAD = 1,
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DFU_UPLOAD = 2,
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DFU_GETSTATUS = 3,
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DFU_CLRSTATUS = 4,
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DFU_GETSTATE = 5,
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DFU_ABORT = 6,
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};
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// DFU States
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typedef enum {
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DFU_STATE_IDLE = 2,
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DFU_STATE_BUSY = 4,
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DFU_STATE_DNLOAD_IDLE = 5,
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DFU_STATE_MANIFEST = 7,
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DFU_STATE_UPLOAD_IDLE = 9,
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DFU_STATE_ERROR = 0xa,
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} dfu_state_t;
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typedef enum {
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DFU_CMD_NONE = 0,
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DFU_CMD_EXIT = 1,
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DFU_CMD_UPLOAD = 7,
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DFU_CMD_DNLOAD = 8,
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} dfu_cmd_t;
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enum {
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DFU_CMD_DNLOAD_SET_ADDRESS = 0x21,
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DFU_CMD_DNLOAD_ERASE = 0x41,
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DFU_CMD_DNLOAD_READ_UNPROTECT = 0x92,
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};
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// Error status flags
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typedef enum {
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DFU_STATUS_OK = 0x00, // No error condition is present.
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DFU_STATUS_ERROR_TARGET = 0x01, // File is not targeted for use by this device.
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DFU_STATUS_ERROR_FILE = 0x02, // File is for this device but fails some vendor-specific verification test.
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DFU_STATUS_ERROR_WRITE = 0x03, // Device is unable to write memory.
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DFU_STATUS_ERROR_ERASE = 0x04, // Memory erase function failed.
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DFU_STATUS_ERROR_CHECK_ERASED = 0x05, // Memory erase check failed.
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DFU_STATUS_ERROR_PROG = 0x06, // Program memory function failed.
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DFU_STATUS_ERROR_VERIFY = 0x07, // Programmed memory failed verification.
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DFU_STATUS_ERROR_ADDRESS = 0x08, // Cannot program memory due to received address that is out of range.
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DFU_STATUS_ERROR_NOTDONE = 0x09, // Received DFU_DNLOAD with wLength = 0, but device does not think it has all of the data yet.
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DFU_STATUS_ERROR_FIRMWARE = 0x0A, // Device's firmware is corrupt. It cannot return to run-time (non-DFU) operations.
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DFU_STATUS_ERROR_VENDOR = 0x0B, // iString indicates a vendor-specific error.
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DFU_STATUS_ERROR_USBR = 0x0C, // Device detected unexpected USB reset signaling.
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DFU_STATUS_ERROR_POR = 0x0D, // Device detected unexpected power on reset.
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DFU_STATUS_ERROR_UNKNOWN = 0x0E, // Something went wrong, but the device does not know what it was.
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DFU_STATUS_ERROR_STALLEDPKT = 0x0F, // Device stalled an unexpected request.
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} dfu_status_t;
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typedef struct _dfu_state_t {
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dfu_state_t state;
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dfu_cmd_t cmd;
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dfu_status_t status;
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uint8_t error;
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bool leave_dfu;
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uint16_t wBlockNum;
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uint16_t wLength;
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uint32_t addr;
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uint8_t buf[DFU_XFER_SIZE] __attribute__((aligned(4)));
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} dfu_context_t;
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extern dfu_context_t dfu_context;
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#endif // MICROPY_INCLUDED_STM32_MBOOT_DFU_H
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