on nand flash using ubi, after the download of the new image into the flash, the "rest" of the nand sectors get erased while flushing the medium. With current u-boot version dfu-util may show:
Starting download: [##################################################] finished! state(7) = dfuMANIFEST, status(0) = No error condition is present unable to read DFU status
as get_status is not answered while erasing sectors, if erasing needs some time.
So do the following changes to prevent this:
- introduce dfuManifest state According to dfu specification ( http://www.usb.org/developers/devclass_docs/usbdfu10.pdf ) section 7: "the device enters the dfuMANIFEST-SYNC state and awaits the solicitation of the status report by the host. Upon receipt of the anticipated DFU_GETSTATUS, the device enters the dfuMANIFEST state, where it completes its reprogramming operations."
- when stepping into dfuManifest state, sending a PollTimeout DFU_MANIFEST_POLL_TIMEOUT in ms, to the host, so the host (dfu-util) waits the PollTimeout before sending a get_status again.
Signed-off-by: Heiko Schocher hs@denx.de Cc: Lukasz Majewski l.majewski@samsung.com Cc: Kyungmin Park kyungmin.park@samsung.com Cc: Marek Vasut marex@denx.de Cc: Pantelis Antoniou panto@antoniou-consulting.com
--- - changes for v2: - reworked as patch 01 of this series changed as Marek Vasut commented -> setting req->length = 0 before calling dfu_flush() not necessary - add comment from Lukasz Majewski: - add Pantelis to Cc - add Readme entry for DFU_DEFAULT_POLL_TIMEOUT - remove unneeded flag setpolltimeout --- README | 10 ++++++++++ drivers/dfu/dfu.c | 4 ---- drivers/usb/gadget/f_dfu.c | 48 ++++++++++++++++++++++++++++++++++++++++------ include/dfu.h | 3 +++ 4 files changed, 55 insertions(+), 10 deletions(-)
diff --git a/README b/README index 216f0c7..7cb7c4f 100644 --- a/README +++ b/README @@ -1525,6 +1525,16 @@ The following options need to be configured: this to the maximum filesize (in bytes) for the buffer. Default is 4 MiB if undefined.
+ DFU_DEFAULT_POLL_TIMEOUT + Poll timeout [ms], is the timeout a device can send to the + host. The host must wait for this timeout before sending + a subsequent DFU_GET_STATUS request to the device. + + DFU_MANIFEST_POLL_TIMEOUT + Poll timeout [ms], which the device sends to the host when + entering dfuMANIFEST state. Host waits this timeout, before + sending again an USB request to the device. + - Journaling Flash filesystem support: CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, CONFIG_JFFS2_NAND_DEV diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index 11401d1..8a09aaf 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -219,10 +219,6 @@ int dfu_write(struct dfu_entity *dfu, void *buf, int size, int blk_seq_num) ret = tret; }
- /* end? */ - if (size == 0) { - ret = dfu_flush(dfu, buf, size, blk_seq_num); - return ret = 0 ? size : ret; }
diff --git a/drivers/usb/gadget/f_dfu.c b/drivers/usb/gadget/f_dfu.c index a045864..de75ff1 100644 --- a/drivers/usb/gadget/f_dfu.c +++ b/drivers/usb/gadget/f_dfu.c @@ -164,9 +164,14 @@ static void dnload_request_complete(struct usb_ep *ep, struct usb_request *req)
dfu_write(dfu_get_entity(f_dfu->altsetting), req->buf, req->length, f_dfu->blk_seq_num); +}
- if (req->length == 0) - puts("DOWNLOAD ... OK\nCtrl+C to exit ...\n"); +static void dnload_request_flush(struct usb_ep *ep, struct usb_request *req) +{ + struct f_dfu *f_dfu = req->context; + + dfu_flush(dfu_get_entity(f_dfu->altsetting), req->buf, + req->length, f_dfu->blk_seq_num); }
static void handle_getstatus(struct usb_request *req) @@ -174,19 +179,22 @@ static void handle_getstatus(struct usb_request *req) struct dfu_status *dstat = (struct dfu_status *)req->buf; struct f_dfu *f_dfu = req->context;
+ dfu_set_poll_timeout(dstat, 0); + switch (f_dfu->dfu_state) { case DFU_STATE_dfuDNLOAD_SYNC: case DFU_STATE_dfuDNBUSY: f_dfu->dfu_state = DFU_STATE_dfuDNLOAD_IDLE; break; case DFU_STATE_dfuMANIFEST_SYNC: + f_dfu->dfu_state = DFU_STATE_dfuMANIFEST; break; + case DFU_STATE_dfuMANIFEST: + dfu_set_poll_timeout(dstat, DFU_MANIFEST_POLL_TIMEOUT); default: break; }
- dfu_set_poll_timeout(dstat, 0); - if (f_dfu->poll_timeout) if (!(f_dfu->blk_seq_num % (dfu_get_buf_size() / DFU_USB_BUFSIZ))) @@ -446,10 +454,11 @@ static int state_dfu_manifest_sync(struct f_dfu *f_dfu, switch (ctrl->bRequest) { case USB_REQ_DFU_GETSTATUS: /* We're MainfestationTolerant */ - f_dfu->dfu_state = DFU_STATE_dfuIDLE; + f_dfu->dfu_state = DFU_STATE_dfuMANIFEST; handle_getstatus(req); f_dfu->blk_seq_num = 0; value = RET_STAT_LEN; + req->complete = dnload_request_flush; break; case USB_REQ_DFU_GETSTATE: handle_getstate(req); @@ -463,6 +472,33 @@ static int state_dfu_manifest_sync(struct f_dfu *f_dfu, return value; }
+static int state_dfu_manifest(struct f_dfu *f_dfu, + const struct usb_ctrlrequest *ctrl, + struct usb_gadget *gadget, + struct usb_request *req) +{ + int value = 0; + + switch (ctrl->bRequest) { + case USB_REQ_DFU_GETSTATUS: + /* We're MainfestationTolerant */ + f_dfu->dfu_state = DFU_STATE_dfuIDLE; + handle_getstatus(req); + f_dfu->blk_seq_num = 0; + value = RET_STAT_LEN; + puts("DOWNLOAD ... OK\nCtrl+C to exit ...\n"); + break; + case USB_REQ_DFU_GETSTATE: + handle_getstate(req); + break; + default: + f_dfu->dfu_state = DFU_STATE_dfuERROR; + value = RET_STALL; + break; + } + return value; +} + static int state_dfu_upload_idle(struct f_dfu *f_dfu, const struct usb_ctrlrequest *ctrl, struct usb_gadget *gadget, @@ -539,7 +575,7 @@ static dfu_state_fn dfu_state[] = { state_dfu_dnbusy, /* DFU_STATE_dfuDNBUSY */ state_dfu_dnload_idle, /* DFU_STATE_dfuDNLOAD_IDLE */ state_dfu_manifest_sync, /* DFU_STATE_dfuMANIFEST_SYNC */ - NULL, /* DFU_STATE_dfuMANIFEST */ + state_dfu_manifest, /* DFU_STATE_dfuMANIFEST */ NULL, /* DFU_STATE_dfuMANIFEST_WAIT_RST */ state_dfu_upload_idle, /* DFU_STATE_dfuUPLOAD_IDLE */ state_dfu_error /* DFU_STATE_dfuERROR */ diff --git a/include/dfu.h b/include/dfu.h index 272a245..6c71ecb 100644 --- a/include/dfu.h +++ b/include/dfu.h @@ -80,6 +80,9 @@ static inline unsigned int get_mmc_blk_size(int dev) #ifndef DFU_DEFAULT_POLL_TIMEOUT #define DFU_DEFAULT_POLL_TIMEOUT 0 #endif +#ifndef DFU_MANIFEST_POLL_TIMEOUT +#define DFU_MANIFEST_POLL_TIMEOUT DFU_DEFAULT_POLL_TIMEOUT +#endif
struct dfu_entity { char name[DFU_NAME_SIZE];