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/drivers/dfu/Kconfig b/drivers/dfu/Kconfig
index 75fe0a1..9709b62 100644
--- a/drivers/dfu/Kconfig
+++ b/drivers/dfu/Kconfig
@@ -23,6 +23,12 @@
Detailed description of this feature can be found at ./doc/README.dfutftp
+config DFU_TIMEOUT
+ bool "Timeout waiting for DFU"
+ help
+ This option adds an optional timeout parameter for DFU which, if set,
+ will cause DFU to only wait for that many seconds before exiting.
+
config DFU_MMC
bool "MMC back end for DFU"
help
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index 38aecd3..df50196 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -21,6 +21,9 @@
static int dfu_alt_num;
static int alt_num_cnt;
static struct hash_algo *dfu_hash_algo;
+#ifdef CONFIG_DFU_TIMEOUT
+static unsigned long dfu_timeout = 0;
+#endif
/*
* The purpose of the dfu_flush_callback() function is to
@@ -58,6 +61,18 @@
#endif
}
+#ifdef CONFIG_DFU_TIMEOUT
+void dfu_set_timeout(unsigned long timeout)
+{
+ dfu_timeout = timeout;
+}
+
+unsigned long dfu_get_timeout(void)
+{
+ return dfu_timeout;
+}
+#endif
+
static int dfu_find_alt_num(const char *s)
{
int i = 0;