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/* Copyright 2022 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef __USB_DFU_H
#define __USB_DFU_H
#include "common.h"
/* Universal Serial Bus Device Class Specification for Device Firmware Upgrade
* Version 1.1
* https://www.usb.org/sites/default/files/DFU_1.1.pdf
*/
#define USB_DFU_RUNTIME_SUBCLASS 0x01
#define USB_DFU_RUNTIME_PROTOCOL 0x01
#define USB_DFU_RUNTIME_DESC_ATTR_CAN_DOWNLOAD BIT(0)
#define USB_DFU_RUNTIME_DESC_ATTR_CAN_UPLOAD BIT(1)
#define USB_DFU_RUNTIME_DESC_ATTR_MANIFEST_TOLERANT BIT(2)
#define USB_DFU_RUNTIME_DESC_ATTR_WILL_DETACH BIT(3)
#define USB_DFU_RUNTIME_DESC_ATTRS \
(USB_DFU_RUNTIME_DESC_ATTR_CAN_DOWNLOAD | \
USB_DFU_RUNTIME_DESC_ATTR_CAN_UPLOAD | \
USB_DFU_RUNTIME_DESC_ATTR_WILL_DETACH)
#define USB_DFU_RUNTIME_DESC_SIZE 9
#define USB_DFU_RUNTIME_DESC_FUNCTIONAL 0x21
#define USB_DFU_RUNTIME_DESC_DETACH_TIMEOUT 0xffff
#define USB_DFU_RUNTIME_DESC_TRANSFER_SIZE 64
#define USB_DFU_RUNTIME_DESC_DFU_VERSION 0x0022
/* DFU states */
#define USB_DFU_RUNTIME_STATE_APP_IDLE 0
#define USB_DFU_RUNTIME_STATE_APP_DETACH 1
/* DFU status */
#define USB_DFU_RUNTIME_STATUS_OK 0
/* DFU Request types */
#define USB_DFU_RUNTIME_REQ_DETACH 0
#define USB_DFU_RUNTIME_REQ_DNLOAD 1
#define USB_DFU_RUNTIME_REQ_UPLOAD 2
#define USB_DFU_RUNTIME_REQ_GET_STATUS 3
#define USB_DFU_RUNTIME_REQ_CLR_STATUS 4
#define USB_DFU_RUNTIME_REQ_GET_STATE 5
#define USB_DFU_RUNTIME_REQ_ABORT 6
/* DFU Functional Descriptor */
struct usb_runtime_dfu_functional_desc {
uint8_t bLength;
uint8_t bDescriptorType;
uint8_t bmAttributes;
uint16_t wDetachTimeOut;
uint16_t wTransferSize;
uint16_t bcdDFUVersion;
} __packed;
/* DFU response packets */
struct usb_runtime_dfu_get_status_resp {
uint8_t bStatus;
uint8_t bwPollTimeout[3];
uint8_t bState;
uint8_t iString;
} __packed;
struct usb_runtime_dfu_get_state_resp {
uint8_t bState;
} __packed;
#endif /* __USB_DFU_H */
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