[Avila] Programming JTAG from Linux and tweaking Redboot

[Tim Harvey]

in referring to the gateworks redboot source that's on the BSP CD, the non swapped versions would be build.<n>/install/bin/redboot.bin where 'n' is the memsize you built (ie 32,64,128, ...)

Tim

----- Original Message ----
From: gw at lunstad.com
To: Avila <avila at lists.unixstudios.net>
Sent: Monday, July 3, 2006 5:03:27 PM
Subject: Re: [Avila] Programming JTAG from Linux  and tweaking Redboot
Subject: [Avila] Thanks Tim,

A couple question:

> Otherwise to update redboot I use the same method I would use to update
any other portion of flash ...  Also keep in mind that the binary image
you would flash in via this method is NOT the byte-swapped image you
would feed to FLASH.EXE.

Q1. I think I understand, but to make sure, am I then flashing the image
that was byte-swapped to make (for example) RB-64.BIN? IOW, what file
would I flash to the ROM?

Q2. Is it necessary to actually write it to flash? IOW, the redboot docs
suggest that creating a RAM version of redboot is possible. Has anyone
done this and can they provide a simple recipe?

> This has been discussed here in the past (look through the archives

Q3. Are there searchable archives somewhere? I assume so since someone has
already spammed this address and this list seems like an unlikely place to
subscribe to sniff addresses.

Thanks,

Andrew

> This has been discussed here in the past (look through the archives for
> possibly more info)
>
> Personally for JTAG I use a personalized VMWare Virtual Machine (using the
> free VMWare player) that boots FREEDos with a PXE network stack and leaves
> me with a DOS cmdprompt with a drive mapped to a network share where I get
> my images from.  This may be a little complicated to setup but the gist of
> it is that you can use FLASH.EXE just fine with a paralell port over
> VMWare if its the whole DOS floppy disk thing that bothers you.  Keep in
> mind its realy slow so I only use this as a failsafe on a board I rendered
> unbootable.
>
> Otherwise to update redboot I use the same method I would use to update
> any other portion of flash - boot the board to a linux kernel and use
> netflash.  If you conifgure your kernel right, you'll have block/char
> devices for each flash partition including the bootloader.  Also keep in
> mind that the binary image you would flash in via this method is NOT the
> byte-swapped image you would feed to FLASH.EXE.
>
> Tim
>
> ----- Original Message ----
> From: gw at lunstad.com
> To: Avila <avila at lists.unixstudios.net>
> Sent: Wednesday, June 28, 2006 8:26:33 AM
> Subject: [Avila] Programming JTAG from Linux  and tweaking Redboot
>
> Hi Folks,
>
> I am beginning to tweak redboot on our 2348 and was wondering if anyone
> had found a work-around to creating a DOS floppy and running FLASH.EXE
> from it to program the flash. Failing that, is it possible to test a
> redboot image from RAM (e.g. load the image and then exec it)?
>
> Thanks in advance,
>
> Andrew
>
>
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