* [PATCH 1/2] scripts/kwboot: document -n option
@ 2017-06-30 9:51 Uwe Kleine-König
2017-06-30 9:51 ` [PATCH 2/2] docs: mvebu: describe -n more accurately in the sphinx document Uwe Kleine-König
2017-06-30 11:33 ` [PATCH 1/2] scripts/kwboot: document -n option Sascha Hauer
0 siblings, 2 replies; 3+ messages in thread
From: Uwe Kleine-König @ 2017-06-30 9:51 UTC (permalink / raw)
To: barebox
This was forgotten in the commit that added support for that option
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
scripts/kwboot.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/scripts/kwboot.c b/scripts/kwboot.c
index 4c6b19aa219e..db177ceb5f2e 100644
--- a/scripts/kwboot.c
+++ b/scripts/kwboot.c
@@ -716,7 +716,7 @@ static void
kwboot_usage(FILE *stream, char *progname)
{
fprintf(stream,
- "Usage: %s [-d | -b <image> | -D <image> ] [ -t ] [-B <baud> ] <TTY>\n",
+ "Usage: %s [-d | -b <image> [ -n <naks> ] | -D <image> ] [ -t ] [-B <baud> ] <TTY>\n",
progname);
fprintf(stream, "\n");
fprintf(stream,
@@ -724,6 +724,8 @@ kwboot_usage(FILE *stream, char *progname)
fprintf(stream,
" -D <image>: boot <image> without preamble (Dove)\n");
fprintf(stream, " -d: enter debug mode\n");
+ fprintf(stream,
+ " -n <naks>: wait for <naks> NAK before uploading image (default: 1)\n");
fprintf(stream, "\n");
fprintf(stream, " -t: mini terminal\n");
fprintf(stream, "\n");
--
2.11.0
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^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 2/2] docs: mvebu: describe -n more accurately in the sphinx document
2017-06-30 9:51 [PATCH 1/2] scripts/kwboot: document -n option Uwe Kleine-König
@ 2017-06-30 9:51 ` Uwe Kleine-König
2017-06-30 11:33 ` [PATCH 1/2] scripts/kwboot: document -n option Sascha Hauer
1 sibling, 0 replies; 3+ messages in thread
From: Uwe Kleine-König @ 2017-06-30 9:51 UTC (permalink / raw)
To: barebox
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
Documentation/boards/mvebu.rst | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/Documentation/boards/mvebu.rst b/Documentation/boards/mvebu.rst
index 8e5612283e7a..b28fd443b668 100644
--- a/Documentation/boards/mvebu.rst
+++ b/Documentation/boards/mvebu.rst
@@ -37,9 +37,15 @@ Booting from UART
The mvebu SoCs support booting from UART. For this there is a tool available in
barebox called ``kwboot``. Quite some mvebu boards are reset once more when
-they already started to read the first block of the image to boot. If you want
-to boot such a board, use the parameter ``-n 15`` for ``kwboot``. (The number
-might have to be adapted per board.)
+they already started to read the first block of the image to boot which
+obviously results in a failure to boot this image. If you want to boot such a
+board, use the parameter ``-n 15`` for ``kwboot`` to delay uploading the image
+and try to hit the right (i.e. second) window harder.
+(The number might have to be adapted per board. The semantic is that the magic
+string is sent until the 15th NAK is seen and only then the image is sent.) A
+typical commandline is:
+
+ kwboot -b barebox.img -n 15 -B 115200 -t /dev/ttyUSB
mvebu boards
------------
--
2.11.0
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 1/2] scripts/kwboot: document -n option
2017-06-30 9:51 [PATCH 1/2] scripts/kwboot: document -n option Uwe Kleine-König
2017-06-30 9:51 ` [PATCH 2/2] docs: mvebu: describe -n more accurately in the sphinx document Uwe Kleine-König
@ 2017-06-30 11:33 ` Sascha Hauer
1 sibling, 0 replies; 3+ messages in thread
From: Sascha Hauer @ 2017-06-30 11:33 UTC (permalink / raw)
To: Uwe Kleine-König; +Cc: barebox
On Fri, Jun 30, 2017 at 11:51:44AM +0200, Uwe Kleine-König wrote:
> This was forgotten in the commit that added support for that option
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
> ---
> scripts/kwboot.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
Applied, thanks
Sascha
>
> diff --git a/scripts/kwboot.c b/scripts/kwboot.c
> index 4c6b19aa219e..db177ceb5f2e 100644
> --- a/scripts/kwboot.c
> +++ b/scripts/kwboot.c
> @@ -716,7 +716,7 @@ static void
> kwboot_usage(FILE *stream, char *progname)
> {
> fprintf(stream,
> - "Usage: %s [-d | -b <image> | -D <image> ] [ -t ] [-B <baud> ] <TTY>\n",
> + "Usage: %s [-d | -b <image> [ -n <naks> ] | -D <image> ] [ -t ] [-B <baud> ] <TTY>\n",
> progname);
> fprintf(stream, "\n");
> fprintf(stream,
> @@ -724,6 +724,8 @@ kwboot_usage(FILE *stream, char *progname)
> fprintf(stream,
> " -D <image>: boot <image> without preamble (Dove)\n");
> fprintf(stream, " -d: enter debug mode\n");
> + fprintf(stream,
> + " -n <naks>: wait for <naks> NAK before uploading image (default: 1)\n");
> fprintf(stream, "\n");
> fprintf(stream, " -t: mini terminal\n");
> fprintf(stream, "\n");
> --
> 2.11.0
>
>
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
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