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NuttX: Add DFU Runtime driver for activating bootloader through USB command.

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This commit is contained in:
Petteri Aimonen 2018-10-31 16:50:01 +02:00
parent 18f971aa35
commit 1f8bd33a5d
4 changed files with 543 additions and 0 deletions
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12
drivers/usbdev/Kconfig
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@ -712,6 +712,18 @@ config RNDIS_VERSIONNO
endif # RNDIS
menuconfig DFU
bool "DFU Device Firmware Upgrade"
default n
---help---
References:
- "Universal Serial Bus Device Class Specification for Device
Firmware Upgrade, Version 1.1, Aug 5, 2004"
This driver implements the application-part of DFU protocol. It enables
a host application to send DFU_DETACH request and to cause the device
to reboot into a bootloader mode.
menuconfig NET_CDCECM
bool "CDC-ECM Ethernet-over-USB"
default n

4
drivers/usbdev/Make.defs
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@ -61,6 +61,10 @@ ifeq ($(CONFIG_RNDIS),y)
CSRCS += rndis.c
endif
ifeq ($(CONFIG_DFU),y)
CSRCS += dfu.c
endif
ifeq ($(CONFIG_NET_CDCECM),y)
CSRCS += cdcecm.c
endif

434
drivers/usbdev/dfu.c Normal file
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@ -0,0 +1,434 @@
/****************************************************************************
* drivers/usbdev/dfu.c
*
* Copyright (C) 2011-2018 Gregory Nutt. All rights reserved.
* Authors: Petteri Aimonen <jpa@git.mail.kapsi.fi>
*
* 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 NuttX 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 OWNER 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.
*
****************************************************************************/
/* This is a driver for the USB Device Firmware Upgrade protocol v1.1.
* Currently it supports the app-side ("Run-Time") part of the protocol:
* a sequence of DFU_DETACH and USB reset commands, which will reboot into
* a separate USB DFU bootloader.
*
* The bootloader is provided by board-specific logic, or STM32's
* built-in ROM bootloader can be used.
*
* https://www.usb.org/sites/default/files/DFU_1.1.pdf
*/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/usb/usb.h>
#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/usbdev_trace.h>
#include <nuttx/usb/dfu.h>
#include <nuttx/kmalloc.h>
#include <nuttx/wqueue.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
/****************************************************************************
* Pre-processor definitions
****************************************************************************/
#define DFU_MAX_TIMEOUT 255
#define DFU_MAX_TRANSFER 2048
#define DFU_VERSION 0x011A
#define USB_REQ_DFU_DETACH 0
#define USB_REQ_DFU_GETSTATUS 3
/****************************************************************************
* Private Types
****************************************************************************/
/* Response to DFU_GETSTATUS */
struct dfu_getstatus_response_s
{
uint8_t status; /* Status of latest command */
uint8_t poll_timeout[3]; /* Time until next GETSTATUS request */
uint8_t state; /* Current state of the device */
uint8_t string_idx; /* Optional string description */
};
/* DFU functional descriptor */
struct dfu_funcdesc_s
{
uint8_t len; /* Descriptor length */
uint8_t type; /* 0x21 = DFU FUNCTIONAL */
uint8_t attributes; /* Bit mask of supported features */
uint8_t detach_timeout[2]; /* Maximum time in milliseconds between DFU_DETACH and USB reset */
uint8_t transfer_size[2]; /* Maximum number of bytes in control writes */
uint8_t dfu_version[2]; /* Version of DFU specification supported */
};
/* USB configuration descriptor */
struct dfu_cfgdesc_s
{
struct usb_ifdesc_s ifdesc; /* DFU interface descriptor */
struct dfu_funcdesc_s funcdesc; /* DFU functional descriptor */
};
struct dfu_driver_s
{
struct usbdevclass_driver_s drvr;
struct usbdev_devinfo_s devinfo;
FAR struct usbdev_req_s *ctrlreq; /* Pointer to preallocated control request */
struct work_s work_item; /* Work queue entry for activating bootloader */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* usbclass callbacks */
static int usbclass_setup(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev,
FAR const struct usb_ctrlreq_s *ctrl,
FAR uint8_t *dataout, size_t outlen);
static int usbclass_bind(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev);
static void usbclass_unbind(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev);
static void usbclass_disconnect(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev);
/****************************************************************************
* Private Data
****************************************************************************/
/* USB driver operations */
const static struct usbdevclass_driverops_s g_dfu_driverops =
{
&usbclass_bind,
&usbclass_unbind,
&usbclass_setup,
&usbclass_disconnect,
NULL,
NULL
};
static const struct dfu_cfgdesc_s g_dfu_cfgdesc =
{
{
.len = USB_SIZEOF_IFDESC,
.type = USB_DESC_TYPE_INTERFACE,
.ifno = 0,
.alt = 0,
.neps = 0,
.classid = 0xFE,
.subclass = 0x01,
.protocol = 0x01, /* DFU runtime protocol */
.iif = 0
},
{
.len = sizeof(struct dfu_funcdesc_s),
.type = 0x21,
.attributes = 0x0B,
.detach_timeout = { LSBYTE(DFU_MAX_TIMEOUT), MSBYTE(DFU_MAX_TIMEOUT) },
.transfer_size = { LSBYTE(DFU_MAX_TRANSFER), MSBYTE(DFU_MAX_TRANSFER) },
.dfu_version = { LSBYTE(DFU_VERSION), MSBYTE(DFU_VERSION) }
}
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: usbclass_freereq
*
* Description:
* Free a request instance along with its buffer
*
****************************************************************************/
static void usbclass_freereq(FAR struct usbdev_ep_s *ep,
FAR struct usbdev_req_s *req)
{
if (ep != NULL && req != NULL)
{
if (req->buf != NULL)
{
EP_FREEBUFFER(ep, req->buf);
}
EP_FREEREQ(ep, req);
}
}
/****************************************************************************
* Name: usbclass_allocreq
*
* Description:
* Allocate a request instance along with its buffer
*
****************************************************************************/
static FAR struct usbdev_req_s *usbclass_allocreq(FAR struct usbdev_ep_s *ep,
uint16_t len)
{
FAR struct usbdev_req_s *req;
req = EP_ALLOCREQ(ep);
if (req != NULL)
{
req->len = len;
req->buf = EP_ALLOCBUFFER(ep, len);
if (req->buf == NULL)
{
EP_FREEREQ(ep, req);
req = NULL;
}
}
return req;
}
static void usbclass_ep0incomplete(FAR struct usbdev_ep_s *ep,
FAR struct usbdev_req_s *req)
{
}
static int16_t usbclass_mkcfgdesc(FAR uint8_t *buf,
FAR struct usbdev_devinfo_s *devinfo)
{
FAR struct dfu_cfgdesc_s *dest = (FAR struct dfu_cfgdesc_s*)buf;
*dest = g_dfu_cfgdesc;
dest->ifdesc.ifno += devinfo->ifnobase;
return sizeof(g_dfu_cfgdesc);
}
static int usbclass_mkstrdesc(uint8_t id, FAR struct usb_strdesc_s *strdesc)
{
return -EINVAL;
}
static void dfu_workqueue_callback(void *arg)
{
usbdev_dfu_activate_bootloader();
}
static int usbclass_setup(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev,
FAR const struct usb_ctrlreq_s *ctrl,
FAR uint8_t *dataout, size_t outlen)
{
FAR struct dfu_driver_s *priv = (FAR struct dfu_driver_s *)driver;
FAR struct usbdev_req_s *ctrlreq = priv->ctrlreq;
uint16_t value;
uint16_t len;
int ret = -EOPNOTSUPP;
value = GETUINT16(ctrl->value);
len = GETUINT16(ctrl->len);
usbtrace(TRACE_CLASSSETUP, ctrl->req);
uinfo("type=%02x req=%02x value=%04x len=%04x\n",
ctrl->type, ctrl->req, value, len);
if ((ctrl->type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_STANDARD)
{
if (ctrl->req == USB_REQ_GETDESCRIPTOR)
{
if (ctrl->value[1] == USB_DESC_TYPE_CONFIG)
{
ret = usbclass_mkcfgdesc(ctrlreq->buf, &priv->devinfo);
}
else if (ctrl->value[1] == USB_DESC_TYPE_STRING)
{
ret = usbclass_mkstrdesc(ctrl->value[0], (struct usb_strdesc_s *)ctrlreq->buf);
}
}
else if (ctrl->req == USB_REQ_SETCONFIGURATION)
{
return 0; // Composite driver will send the reply
}
else if (ctrl->req == USB_REQ_SETINTERFACE)
{
// Only one alternate setting (0) is supported
if (value == 0)
{
ret = 0;
}
}
else if (ctrl->req == USB_REQ_GETINTERFACE)
{
*(FAR uint8_t *) ctrlreq->buf = 0;
ret = 1;
}
}
else if ((ctrl->type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_CLASS)
{
if (ctrl->req == USB_REQ_DFU_DETACH)
{
// Execute the bootloader activation through work queue, so that we can send
// the USB reply packet first.
work_queue(HPWORK, &priv->work_item, dfu_workqueue_callback, NULL, 1);
ret = 0;
}
else if (ctrl->req == USB_REQ_DFU_GETSTATUS)
{
/* Respond with APP_IDLE status */
FAR struct dfu_getstatus_response_s *response = (FAR struct dfu_getstatus_response_s*)ctrlreq->buf;
memset(response, 0, sizeof(struct dfu_getstatus_response_s));
ret = sizeof(struct dfu_getstatus_response_s);
}
}
/* Respond to the setup command if data was returned. On an error return
* value (ret < 0), the USB driver will stall.
*/
if (ret >= 0)
{
ctrlreq->len = (len < ret) ? len : ret;
ctrlreq->flags = USBDEV_REQFLAGS_NULLPKT;
ret = composite_ep0submit(driver, dev, ctrlreq);
if (ret < 0)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_EPRESPQ), (uint16_t)-ret);
ctrlreq->result = OK;
}
}
return ret;
}
static int usbclass_bind(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev)
{
FAR struct dfu_driver_s *priv = (FAR struct dfu_driver_s *)driver;
priv->ctrlreq = usbclass_allocreq(dev->ep0, sizeof(g_dfu_cfgdesc));
if (priv->ctrlreq == NULL)
{
usbtrace(TRACE_CLSERROR(USBSER_TRACEERR_ALLOCCTRLREQ), 0);
return -ENOMEM;
}
priv->ctrlreq->callback = usbclass_ep0incomplete;
return OK;
}
static void usbclass_unbind(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev)
{
FAR struct dfu_driver_s *priv = (FAR struct dfu_driver_s *)driver;
if (priv->ctrlreq != NULL)
{
usbclass_freereq(dev->ep0, priv->ctrlreq);
priv->ctrlreq = NULL;
}
}
static void usbclass_disconnect(FAR struct usbdevclass_driver_s *driver,
FAR struct usbdev_s *dev)
{
}
/****************************************************************************
* Name: usbclass_classobject
*
* Description:
* Allocate memory for the RNDIS driver class object
*
* Returned Value:
* 0 on success, negative error code on failure.
*
****************************************************************************/
static int usbclass_classobject(int minor,
FAR struct usbdev_devinfo_s *devinfo,
FAR struct usbdevclass_driver_s **classdev)
{
FAR struct dfu_driver_s *alloc;
alloc = kmm_zalloc(sizeof(struct dfu_driver_s));
if (!alloc)
{
return -ENOMEM;
}
*classdev = &alloc->drvr;
alloc->drvr.speed = USB_SPEED_FULL;
alloc->drvr.ops = &g_dfu_driverops;
return OK;
}
/****************************************************************************
* Name: usbclass_uninitialize
*
* Description:
* Free allocated memory
*
* Returned Value:
* 0 on success, negative error code on failure.
*
****************************************************************************/
static void usbclass_uninitialize(FAR struct usbdevclass_driver_s *classdev)
{
kmm_free(classdev);
}
/****************************************************************************
* Public Functions
****************************************************************************/
void usbdev_dfu_get_composite_devdesc(struct composite_devdesc_s *dev)
{
memset(dev, 0, sizeof(struct composite_devdesc_s));
dev->mkconfdesc = usbclass_mkcfgdesc;
dev->mkstrdesc = usbclass_mkstrdesc;
dev->classobject = usbclass_classobject;
dev->uninitialize = usbclass_uninitialize;
dev->nconfigs = 1;
dev->configid = 0;
dev->cfgdescsize = sizeof(g_dfu_cfgdesc);
dev->devinfo.ninterfaces = 1;
dev->devinfo.nstrings = 0;
dev->devinfo.nendpoints = 0;
}

93
include/nuttx/usb/dfu.h Normal file
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@ -0,0 +1,93 @@
/****************************************************************************
* include/nuttx/usb/dfu.h
*
* Copyright (C) 2011-2018 Gregory Nutt. All rights reserved.
* Authors: Petteri Aimonen <jpa@git.mail.kapsi.fi>
*
* 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 NuttX 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 OWNER 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.
*
****************************************************************************/
#ifndef __INCLUDE_NUTTX_USB_DFU_H
#define __INCLUDE_NUTTX_USB_DFU_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include <nuttx/usb/usbdev.h>
/************************************************************************************
* Public Functions
************************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
# define EXTERN extern "C"
extern "C"
{
#else
# define EXTERN extern
#endif
/****************************************************************************
* Name: usbdev_dfu_get_composite_devdesc
*
* Description:
* Helper function to fill in some constants into the composite
* configuration struct.
*
* Input Parameters:
* dev - Pointer to the configuration struct we should fill
*
* Returned Value:
* None
*
****************************************************************************/
void usbdev_dfu_get_composite_devdesc(struct composite_devdesc_s *dev);
/****************************************************************************
* Name: usbdev_dfu_activate_bootloader
*
* Description:
* Reboots into DFU bootloader mode. The USB DFU application side driver
* will call this when it receives DFU_DETACH request. The board-specific
* code must provide implementation for this function.
*
****************************************************************************/
void usbdev_dfu_activate_bootloader();
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __INCLUDE_NUTTX_USB_DFU_H */