/*!
|
\file usb_iap_core.c
|
\brief IAP driver
|
|
\version 2020-08-01, V3.0.0, firmware for GD32F30x
|
*/
|
|
/*
|
Copyright (c) 2020, GigaDevice Semiconductor Inc.
|
|
Redistribution and use in source and binary forms, with or without modification,
|
are permitted provided that the following conditions are met:
|
|
1. Redistributions of source code must retain the above copyright notice, this
|
list of conditions and the following disclaimer.
|
2. Redistributions in binary form must reproduce the above copyright notice,
|
this list of conditions and the following disclaimer in the documentation
|
and/or other materials provided with the distribution.
|
3. Neither the name of the copyright holder nor the names of its contributors
|
may be used to endorse or promote products derived from this software without
|
specific prior written permission.
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
|
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
OF SUCH DAMAGE.
|
*/
|
|
#include "usbd_transc.h"
|
#include "usb_iap_core.h"
|
#include <string.h>
|
|
#define USBD_VID 0x28E9U
|
#define USBD_PID 0x028BU
|
|
/* Note:it should use the C99 standard when compiling the below codes */
|
/* USB standard device descriptor */
|
usb_desc_dev iap_dev_desc =
|
{
|
.header =
|
{
|
.bLength = USB_DEV_DESC_LEN,
|
.bDescriptorType = USB_DESCTYPE_DEV
|
},
|
.bcdUSB = 0x0200U,
|
.bDeviceClass = 0x00U,
|
.bDeviceSubClass = 0x00U,
|
.bDeviceProtocol = 0x00U,
|
.bMaxPacketSize0 = USBD_EP0_MAX_SIZE,
|
.idVendor = USBD_VID,
|
.idProduct = USBD_PID,
|
.bcdDevice = 0x0100U,
|
.iManufacturer = STR_IDX_MFC,
|
.iProduct = STR_IDX_PRODUCT,
|
.iSerialNumber = STR_IDX_SERIAL,
|
.bNumberConfigurations = USBD_CFG_MAX_NUM
|
};
|
|
usb_hid_desc_config_set iap_config_desc =
|
{
|
.config =
|
{
|
.header =
|
{
|
.bLength = sizeof(usb_desc_config),
|
.bDescriptorType = USB_DESCTYPE_CONFIG
|
},
|
.wTotalLength = USB_DESC_LEN_IAP_CONFIG_SET,
|
.bNumInterfaces = 0x01U,
|
.bConfigurationValue = 0x01U,
|
.iConfiguration = 0x00U,
|
.bmAttributes = 0x80U,
|
.bMaxPower = 0x32U
|
},
|
|
.hid_itf =
|
{
|
.header =
|
{
|
.bLength = sizeof(usb_desc_itf),
|
.bDescriptorType = USB_DESCTYPE_ITF
|
},
|
.bInterfaceNumber = 0x00U,
|
.bAlternateSetting = 0x00U,
|
.bNumEndpoints = 0x02U,
|
.bInterfaceClass = USB_HID_CLASS,
|
.bInterfaceSubClass = 0x00U,
|
.bInterfaceProtocol = 0x01U,
|
.iInterface = 0x00U
|
},
|
|
.hid_vendor =
|
{
|
.header =
|
{
|
.bLength = sizeof(usb_desc_hid),
|
.bDescriptorType = USB_DESCTYPE_HID
|
},
|
.bcdHID = 0x0111U,
|
.bCountryCode = 0x00U,
|
.bNumDescriptors = 0x01U,
|
.bDescriptorType = USB_DESCTYPE_REPORT,
|
.wDescriptorLength = USB_DESC_LEN_IAP_REPORT,
|
},
|
|
.hid_epin =
|
{
|
.header =
|
{
|
.bLength = sizeof(usb_desc_ep),
|
.bDescriptorType = USB_DESCTYPE_EP
|
},
|
.bEndpointAddress = IAP_IN_EP,
|
.bmAttributes = USB_EP_ATTR_INT,
|
.wMaxPacketSize = IAP_IN_PACKET,
|
.bInterval = 0x01U
|
},
|
|
.hid_epout =
|
{
|
.header =
|
{
|
.bLength = sizeof(usb_desc_ep),
|
.bDescriptorType = USB_DESCTYPE_EP
|
},
|
.bEndpointAddress = IAP_OUT_EP,
|
.bmAttributes = USB_EP_ATTR_INT,
|
.wMaxPacketSize = IAP_OUT_PACKET,
|
.bInterval = 0x01U
|
}
|
};
|
|
/* USB language ID Descriptor */
|
usb_desc_LANGID usbd_language_id_desc =
|
{
|
.header =
|
{
|
.bLength = sizeof(usb_desc_LANGID),
|
.bDescriptorType = USB_DESCTYPE_STR
|
},
|
.wLANGID = ENG_LANGID
|
};
|
|
/* USB manufacture string */
|
static usb_desc_str manufacturer_string =
|
{
|
.header =
|
{
|
.bLength = USB_STRING_LEN(10U),
|
.bDescriptorType = USB_DESCTYPE_STR,
|
},
|
.unicode_string = {'G', 'i', 'g', 'a', 'D', 'e', 'v', 'i', 'c', 'e'}
|
};
|
|
/* USB product string */
|
static usb_desc_str product_string =
|
{
|
.header =
|
{
|
.bLength = USB_STRING_LEN(12U),
|
.bDescriptorType = USB_DESCTYPE_STR,
|
},
|
.unicode_string = {'G', 'D', '3', '2', '-', 'U', 'S', 'B', '_', 'I', 'A', 'P'}
|
};
|
|
/* USBD serial string */
|
static usb_desc_str serial_string =
|
{
|
.header =
|
{
|
.bLength = USB_STRING_LEN(2U),
|
.bDescriptorType = USB_DESCTYPE_STR,
|
}
|
};
|
|
uint8_t* usbd_iap_strings[] =
|
{
|
[STR_IDX_LANGID] = (uint8_t *)&usbd_language_id_desc,
|
[STR_IDX_MFC] = (uint8_t *)&manufacturer_string,
|
[STR_IDX_PRODUCT] = (uint8_t *)&product_string,
|
[STR_IDX_SERIAL] = (uint8_t *)&serial_string
|
};
|
|
usb_desc iap_desc = {
|
.dev_desc = (uint8_t *)&iap_dev_desc,
|
.config_desc = (uint8_t *)&iap_config_desc,
|
.strings = usbd_iap_strings
|
};
|
|
/* local function prototypes ('static') */
|
static uint8_t iap_init (usb_dev *udev, uint8_t config_index);
|
static uint8_t iap_deinit (usb_dev *udev, uint8_t config_index);
|
static uint8_t iap_req_handler (usb_dev *udev, usb_req *req);
|
static void iap_data_out (usb_dev *udev, uint8_t ep_num);
|
|
usb_class iap_class = {
|
.init = iap_init,
|
.deinit = iap_deinit,
|
.req_process = iap_req_handler,
|
.data_out = iap_data_out
|
};
|
|
/* USB custom HID device report descriptor */
|
const uint8_t iap_report_desc[USB_DESC_LEN_IAP_REPORT] =
|
{
|
0x05, 0x01, /* USAGE_PAGE (Generic Desktop) */
|
0x09, 0x00, /* USAGE (Custom Device) */
|
0xa1, 0x01, /* COLLECTION (Application) */
|
|
/* IAP command and data */
|
0x85, 0x01, /* REPORT_ID (0x01) */
|
0x09, 0x01, /* USAGE (IAP command) */
|
0x15, 0x00, /* LOGICAL_MINIMUM (0) */
|
0x25, 0xff, /* LOGICAL_MAXIMUM (255) */
|
0x75, 0x08, /* REPORT_SIZE (8) */
|
0x95, 0x3f, /* REPORT_COUNT (63) */
|
0x91, 0x82, /* OUTPUT (Data,Var,Abs,Vol) */
|
|
/* device status and option byte */
|
0x85, 0x02, /* REPORT_ID (0x02) */
|
0x09, 0x02, /* USAGE (Status and option byte) */
|
0x15, 0x00, /* LOGICAL_MINIMUM (0) */
|
0x25, 0xff, /* LOGICAL_MAXIMUM (255) */
|
0x75, 0x08, /* REPORT_SIZE (8) */
|
0x95, 0x10, /* REPORT_COUNT (16) */
|
0x81, 0x82, /* INPUT (Data,Var,Abs,Vol) */
|
|
0xc0 /* END_COLLECTION */
|
};
|
|
/* IAP requests management functions */
|
static void iap_req_erase (usb_dev *udev);
|
static void iap_req_dnload (usb_dev *udev);
|
static void iap_req_optionbyte(usb_dev *udev);
|
static void iap_req_leave (usb_dev *udev);
|
static void iap_address_send (usb_dev *udev);
|
static void iap_data_write (uint8_t *data, uint32_t addr, uint32_t len);
|
|
/*!
|
\brief initialize the HID device
|
\param[in] udev: pointer to USB device instance
|
\param[in] config_index: configuration index
|
\param[out] none
|
\retval USB device operation status
|
*/
|
static uint8_t iap_init (usb_dev *udev, uint8_t config_index)
|
{
|
static usbd_iap_handler iap_handler;
|
|
/* initialize Tx endpoint */
|
usbd_ep_init(udev, EP_BUF_SNG, INT_TX_ADDR, &(iap_config_desc.hid_epin));
|
|
/* initialize Rx endpoint */
|
usbd_ep_init(udev, EP_BUF_SNG, INT_RX_ADDR, &(iap_config_desc.hid_epout));
|
|
/* unlock the internal flash */
|
fmc_unlock();
|
|
memset((void *)&iap_handler, 0, sizeof(usbd_iap_handler));
|
|
/* prepare receive Data */
|
usbd_ep_recev(udev, IAP_OUT_EP, iap_handler.report_buf, IAP_OUT_PACKET);
|
|
udev->ep_transc[EP_ID(IAP_OUT_EP)][TRANSC_OUT] = iap_class.data_out;
|
|
iap_handler.base_address = APP_LOADED_ADDR;
|
|
udev->class_data[USBD_IAP_INTERFACE] = (void *)&iap_handler;
|
|
return USBD_OK;
|
}
|
|
/*!
|
\brief de-initialize the HID device
|
\param[in] udev: pointer to USB device instance
|
\param[in] config_index: configuration index
|
\param[out] none
|
\retval USB device operation status
|
*/
|
static uint8_t iap_deinit (usb_dev *udev, uint8_t config_index)
|
{
|
/* deinitialize HID endpoints */
|
usbd_ep_deinit (udev, IAP_IN_EP);
|
usbd_ep_deinit (udev, IAP_OUT_EP);
|
|
/* lock the internal flash */
|
fmc_lock();
|
|
return USBD_OK;
|
}
|
|
/*!
|
\brief handle the HID class-specific requests
|
\param[in] udev: pointer to USB device instance
|
\param[in] req: device class-specific request
|
\param[out] none
|
\retval USB device operation status
|
*/
|
static uint8_t iap_req_handler (usb_dev *udev, usb_req *req)
|
{
|
uint8_t status = REQ_NOTSUPP;
|
|
usbd_iap_handler *iap = (usbd_iap_handler *)udev->class_data[USBD_IAP_INTERFACE];
|
|
switch (req->bRequest) {
|
case GET_REPORT:
|
/* no use for this driver */
|
break;
|
|
case GET_IDLE:
|
usb_transc_config(&udev->transc_in[0], (uint8_t *)&iap->idlestate, 1U, 0U);
|
|
status = REQ_SUPP;
|
break;
|
|
case GET_PROTOCOL:
|
usb_transc_config(&udev->transc_in[0], (uint8_t *)&iap->protocol, 1U, 0U);
|
|
status = REQ_SUPP;
|
break;
|
|
case SET_REPORT:
|
iap->reportID = (uint8_t)(req->wValue);
|
|
usb_transc_config(&udev->transc_out[0], iap->report_buf, req->wLength, 0U);
|
|
status = REQ_SUPP;
|
break;
|
|
case SET_IDLE:
|
iap->idlestate = (uint8_t)(req->wValue >> 8);
|
|
status = REQ_SUPP;
|
break;
|
|
case SET_PROTOCOL:
|
iap->protocol = (uint8_t)(req->wValue);
|
|
status = REQ_SUPP;
|
break;
|
|
case USB_GET_DESCRIPTOR:
|
if (USB_DESCTYPE_REPORT == (req->wValue >> 8)) {
|
usb_transc_config(&udev->transc_in[0],
|
(uint8_t *)iap_report_desc,
|
USB_MIN(USB_DESC_LEN_IAP_REPORT, req->wLength),
|
0U);
|
|
return REQ_SUPP;
|
}
|
break;
|
|
default:
|
break;
|
}
|
|
return status;
|
}
|
|
/*!
|
\brief handle data out stage
|
\param[in] udev: pointer to USB device instance
|
\param[in] ep_num: endpoint number
|
\param[out] none
|
\retval none
|
*/
|
static void iap_data_out (usb_dev *udev ,uint8_t ep_num)
|
{
|
usbd_iap_handler *iap = (usbd_iap_handler *)udev->class_data[USBD_IAP_INTERFACE];
|
|
if (0x01U == iap->report_buf[0]) {
|
switch(iap->report_buf[1]) {
|
case IAP_DNLOAD:
|
iap_req_dnload(udev);
|
break;
|
|
case IAP_ERASE:
|
iap_req_erase(udev);
|
break;
|
|
case IAP_OPTION_BYTE:
|
iap_req_optionbyte(udev);
|
break;
|
|
case IAP_LEAVE:
|
iap_req_leave(udev);
|
break;
|
|
case IAP_GETBIN_ADDRESS:
|
iap_address_send(udev);
|
break;
|
|
default:
|
break;
|
}
|
}
|
|
usbd_ep_recev(udev, IAP_OUT_EP, iap->report_buf, IAP_OUT_PACKET);
|
}
|
|
/*!
|
\brief send iap report
|
\param[in] udev: pointer to USB device instance
|
\param[in] report: pointer to HID report
|
\param[in] len: data length
|
\param[out] none
|
\retval USB device operation status
|
*/
|
uint8_t iap_report_send (usb_dev *udev, uint8_t *report, uint16_t len)
|
{
|
usbd_ep_send (udev, IAP_IN_EP, report, len);
|
|
return USBD_OK;
|
}
|
|
/*!
|
\brief handle the IAP_DNLOAD request
|
\param[in] udev: pointer to USB device instance
|
\param[out] none
|
\retval none
|
*/
|
static void iap_req_dnload (usb_dev *udev)
|
{
|
usbd_iap_handler *iap = (usbd_iap_handler *)udev->class_data[USBD_IAP_INTERFACE];
|
|
if (0U != iap->transfer_times) {
|
if (1U == iap->transfer_times) {
|
if (0U == iap->lps) {
|
iap_data_write(&iap->report_buf[2], iap->base_address, TRANSFER_SIZE);
|
} else {
|
iap_data_write(&iap->report_buf[2], iap->base_address, iap->file_length % TRANSFER_SIZE);
|
iap->lps = 0U;
|
}
|
|
iap->dev_status[0] = 0x02U;
|
iap->dev_status[1] = 0x02U;
|
iap_report_send (udev, iap->dev_status, IAP_IN_PACKET);
|
} else {
|
iap_data_write(&iap->report_buf[2], iap->base_address, TRANSFER_SIZE);
|
|
iap->base_address += TRANSFER_SIZE;
|
}
|
|
iap->transfer_times--;
|
}
|
}
|
|
/*!
|
\brief handle the IAP_ERASE request
|
\param[in] udev: pointer to USB device instance
|
\param[out] none
|
\retval none
|
*/
|
static void iap_req_erase (usb_dev *udev)
|
{
|
uint32_t i, addr = 0U;
|
|
usbd_iap_handler *iap = (usbd_iap_handler *)udev->class_data[USBD_IAP_INTERFACE];
|
|
/* get base address to erase */
|
iap->base_address = iap->report_buf[2];
|
iap->base_address |= (uint32_t)iap->report_buf[3] << 8;
|
iap->base_address |= (uint32_t)iap->report_buf[4] << 16;
|
iap->base_address |= (uint32_t)iap->report_buf[5] << 24;
|
|
iap->page_count = iap->report_buf[6];
|
|
/* get file length */
|
iap->file_length = iap->report_buf[7];
|
iap->file_length |= (uint32_t)iap->report_buf[8] << 8;
|
iap->file_length |= (uint32_t)iap->report_buf[9] << 16;
|
iap->file_length |= (uint32_t)iap->report_buf[10] << 24;
|
|
/* compute last packet size and transfer times */
|
iap->lps = iap->file_length % TRANSFER_SIZE;
|
if (0U == iap->lps) {
|
iap->transfer_times = (uint16_t)iap->file_length / TRANSFER_SIZE;
|
} else {
|
iap->transfer_times = (uint16_t)iap->file_length / TRANSFER_SIZE + 1U;
|
}
|
|
/* check if the address is in protected area */
|
if (IS_PROTECTED_AREA(iap->base_address)) {
|
return;
|
}
|
|
addr = iap->base_address;
|
|
for (i = 0U; i < iap->page_count; i ++) {
|
/* call the standard flash erase-page function */
|
fmc_page_erase(addr);
|
|
addr += PAGE_SIZE;
|
}
|
|
iap->dev_status[0] = 0x02U;
|
iap->dev_status[1] = 0x01U;
|
|
usbd_ep_send(udev, IAP_IN_EP, iap->dev_status, IAP_IN_PACKET);
|
}
|
|
/*!
|
\brief handle the IAP_OPTION_BYTE request
|
\param[in] udev: pointer to USB device instance
|
\param[out] none
|
\retval none
|
*/
|
static void iap_req_optionbyte (usb_dev *udev)
|
{
|
uint8_t i = 0U;
|
uint32_t address = 0x1FFFF800U;
|
|
usbd_iap_handler *iap = (usbd_iap_handler *)udev->class_data[USBD_IAP_INTERFACE];
|
|
iap->option_byte[0] = 0x02U;
|
|
for (i = 1U; i < 17U; i++) {
|
iap->option_byte[i] = *(uint8_t *)address;
|
address++;
|
}
|
|
iap_report_send(udev, iap->option_byte, IAP_IN_PACKET);
|
}
|
|
/*!
|
\brief handle the IAP_LEAVE request
|
\param[in] udev: pointer to USB device instance
|
\param[out] none
|
\retval none
|
*/
|
static void iap_req_leave (usb_dev *udev)
|
{
|
/* lock the internal flash */
|
fmc_lock();
|
|
/* generate system reset to allow jumping to the user code */
|
NVIC_SystemReset();
|
}
|
|
/*!
|
\brief handle the IAP_SEND_ADDRESS request
|
\param[in] udev: pointer to USB device instance
|
\param[out] none
|
\retval none
|
*/
|
static void iap_address_send(usb_dev *udev)
|
{
|
usbd_iap_handler *iap = (usbd_iap_handler *)udev->class_data[USBD_IAP_INTERFACE];
|
|
iap->bin_addr[0] = 0x02U;
|
|
iap->bin_addr[1] = (uint8_t)(APP_LOADED_ADDR);
|
iap->bin_addr[2] = (uint8_t)(APP_LOADED_ADDR >> 8);
|
iap->bin_addr[3] = (uint8_t)(APP_LOADED_ADDR >> 16);
|
iap->bin_addr[4] = (uint8_t)(APP_LOADED_ADDR >> 24);
|
|
iap_report_send (udev, iap->bin_addr, IAP_IN_PACKET);
|
}
|
|
/*!
|
\brief write data to sectors of memory
|
\param[in] data: data to be written
|
\param[in] addr: sector address/code
|
\param[in] len: length of data to be written (in bytes)
|
\param[out] none
|
\retval MAL_OK if all operations are OK, MAL_FAIL else
|
*/
|
static void iap_data_write (uint8_t *data, uint32_t addr, uint32_t len)
|
{
|
uint32_t index = 0U;
|
|
/* check if the address is in protected area */
|
if (IS_PROTECTED_AREA(addr)) {
|
return;
|
}
|
|
if (len & 0x03U) {/* not an aligned data */
|
for (index = len; index < ((len & 0xFFFCU) + 4U); index++) {
|
data[index] = 0xFFU;
|
}
|
}
|
|
/* data received are word multiple */
|
for (index = 0U; index < len; index += 4U) {
|
fmc_word_program(addr, *(uint32_t *)(data + index));
|
addr += 4U;
|
}
|
}
|
