dfu: Add optional timeout parameter
When the `dfu` command is called from the U-Boot environment,
it now accepts an optional parameter that specifies a timeout (in seconds).
If a DFU connection is not made within that time the `dfu` command exits
(as it would if Ctrl+C was pressed). If the timeout is left empty or being
zero the `dfu` command behaves as it does now.
This is useful for allowing U-Boot to check to see if anything wants to
upload new firmware before continuing to boot.
The patch is based on the commit
https://github.com/01org/edison-u-boot/commit/5e966ccc3c65c18c9783741fa04e0c45e021780c
by Sebastien Colleur, which has been heavily reworked due to U-Boot changes
in the past.
Signed-off-by: Brad Campbell <bradjc5@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
diff --git a/doc/README.dfu b/doc/README.dfu
index 558d347..caf1c99 100644
--- a/doc/README.dfu
+++ b/doc/README.dfu
@@ -43,6 +43,7 @@
CONFIG_DFU_RAM
CONFIG_DFU_SF
CONFIG_DFU_SF_PART
+ CONFIG_DFU_TIMEOUT
CONFIG_DFU_VIRTUAL
CONFIG_CMD_DFU
@@ -70,12 +71,15 @@
dfu <USB_controller> [<interface> <dev>] list
list the alternate device defined in "dfu_alt_info"
- dfu <USB_controller> [<interface> <dev>]
+ dfu <USB_controller> [<interface> <dev>] [<timeout>]
start the dfu stack on the USB instance with the selected medium
backend and use the "dfu_alt_info" variable to configure the
alternate setting and link each one with the medium
The dfu command continue until receive a ^C in console or
- a DFU detach transaction from HOST.
+ a DFU detach transaction from HOST. If CONFIG_DFU_TIMEOUT option
+ is enabled and <timeout> parameter is present in the command line,
+ the DFU operation will be aborted automatically after <timeout>
+ seconds of waiting remote to initiate DFU session.
The possible values of <interface> are :
(with <USB controller> = 0 in the dfu command example)