From 001a8319866062cd63b7b62e5bb4b85eacfde4b4 Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Tue, 18 Mar 2014 08:09:56 +0100 Subject: usb: dfu: introduce dfuMANIFEST state 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 Cc: Lukasz Majewski Cc: Kyungmin Park Cc: Marek Vasut Cc: Pantelis Antoniou --- README | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'README') diff --git a/README b/README index 216f0c70aa..7cb7c4f626 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 -- cgit v1.2.3