Hi JPT,
On Thu, 04 Apr 2013 12:21:43 +0200, JPT j-p-t@gmx.net wrote:
Am 04.04.2013 11:17, schrieb Albert ARIBAUD:
Hi Thomas,
On Thu, 4 Apr 2013 10:18:15 +0200, Thomas Petazzoni thomas.petazzoni@free-electrons.com wrote:
On Marvell hardware, you can send a different U-Boot using the serial port, even if the on-flash U-Boot is broken. Have a look at tools/kwboot.c in the mainline U-Boot sources. It uses the serial port to send using the Xmodem protocol, a new U-Boot payload to the Kirkwood SoC.
mh, there is no kwb* (or kw?b*) neither in the netgear sources nor in stock uboot-1.14
That's because kwb* is an official-U-Boot thing, and u-boot 1.1.4 is way too old, and Netgear sources are based off 1.1.4.
Depends on the SoC. I am the proud owner of a Wireless Space which, due its Kirkwood SoC's revision, cannot recover through UART even though kirkwoods normally can. Not to mention my ED Mini V2, which has orion, with no UART recovery at all.
Also, UART recovery requires having a working U-boot image file. JPT, do you have a working (pristine) U-Boot for your ReadyNAS, or can you get one from Netgear?
I've got both, source and image. The first thing I did was reading the ROM to disk :) 1,5M 2013-02-10 20:18 mtd0.uboot.img 128K 2013-02-10 20:18 mtd1.uboot-env.img 6,0M 2013-02-10 20:19 mtd2.kernel.img 2,2M 2013-02-10 20:19 mtd3.initrd.img 89M 2013-02-10 20:17 mtd4.jffs2.img
Very wise of you.
There is a UART_boot_file.zip included in the source: 32000 2008-06-05 19:35 bb11223344556677_boot.bin
Very convenient of Netgear. :)
There are a lot of changes in the netgear uboot source. I don't know where to start. I cannot find your mail where you wrote about searching for something... o.O
Well, I think easiest would be to try loading the image through serial. Should I start with this? http://forum.doozan.com/read.php?3,4640,4640,quote=1
Since you seem to have a binary meant for UART booting, yes, you might try sending it to the board; with any luck that'll allow you to inspect and possibly revert your U-Boot environment into what it was before the bricking. As to how... any serial app with Xmodem should work, I presume. If the transfer starts, chances are the image will run automatically.
Thanks,
Jan
Amicalement,