[RFC 2/2] dns325: initial support for D-Link DNS-325

[Alexander Aring]

Hi,

On Sun, Jun 22, 2014 at 11:50:56PM +0200, Sebastian Hesselbarth wrote:
> On 06/22/2014 10:34 PM, Alexander Aring wrote:
> > This patch add a basic support for the D-Link DNS-325.
> > 
> > Currently only booting via uart with kwboot is supported. The barebox
> > kwboot utility doesn't work at the moment. Use kwboot utility from u-boot
> > instead.
> 
> Why does kwboot does not work? There is an issue with early Kirkwood's
> BootROM and UART boot mode. Just try over and over again. I also recall
> modifying the timeouts may help.
> 

I tried to change the timeouts and it works now. I take these timings from
u-boot. Is there any reason why these timings differs?

Datasheet says nothing about any delay while loop for sending bootmsg.


Here is my diff with the very small change:

diff --git a/scripts/kwboot.c b/scripts/kwboot.c
index e068660..bcb5972 100644
--- a/scripts/kwboot.c
+++ b/scripts/kwboot.c
@@ -34,8 +34,8 @@ static unsigned char kwboot_msg_debug[] = {
        0xDD, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
 };
 
-#define KWBOOT_MSG_REQ_DELAY   1000 /* ms */
-#define KWBOOT_MSG_RSP_TIMEO   1000 /* ms */
+#define KWBOOT_MSG_REQ_DELAY   10 /* ms */
+#define KWBOOT_MSG_RSP_TIMEO   50 /* ms */
 
 /*
  * Xmodem Transfers



btw.:

Now I see that the internal ROM bootloader could also boot from SATA
device - this sounds interesting. I will try that next weekend.


Thanks for your great help Sebastian!

- Alex