8bbaa20227
The implementation internally uses sector erase to wipe everything except the sector(s) that mboot lives in (by erasing starting from APPLICATION_ADDR). The erase command can take some time (eg an STM32F765 with 2MB of flash takes 8 to 10 seconds). This time is normally enough to make pydfu.py fail with a timeout. The DFU standard includes a mechanism for the DFU device to request a longer timeout as part of the get-status response just before starting an operation. This timeout functionality has been implemented here.
110 lines
4.1 KiB
C
110 lines
4.1 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 <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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// 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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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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static dfu_context_t dfu_context SECTION_NOZERO_BSS;
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#endif // MICROPY_INCLUDED_STM32_MBOOT_DFU_H
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