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c6f334272a
This commit adds support to stm32's mboot for signe, encrypted and compressed DFU updates. It is based on inital work done by Andrew Leech. The feature is enabled by setting MBOOT_ENABLE_PACKING to 1 in the board's mpconfigboard.mk file, and by providing a header file in the board folder (usually called mboot_keys.h) with a set of signing and encryption keys (which can be generated by mboot_pack_dfu.py). The signing and encryption is provided by libhydrogen. Compression is provided by uzlib. Enabling packing costs about 3k of flash. The included mboot_pack_dfu.py script converts a .dfu file to a .pack.dfu file which can be subsequently deployed to a board with mboot in packing mode. This .pack.dfu file is created as follows: - the firmware from the original .dfu is split into chunks (so the decryption can fit in RAM) - each chunk is compressed, encrypted, a header added, then signed - a special final chunk is added with a signature of the entire firmware - all chunks are concatenated to make the final .pack.dfu file The .pack.dfu file can be deployed over USB or from the internal filesystem on the device (if MBOOT_FSLOAD is enabled). See #5267 and #5309 for additional discussion. Signed-off-by: Damien George <damien@micropython.org>
118 lines
4.4 KiB
C
118 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 <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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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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