[U-Boot] How to test a new u-boot image over network?
vikas.sontakke at emc.com
vikas.sontakke at emc.com
Thu Dec 8 17:25:00 CET 2011
Hi Stefan,
>Then the vendor U-Boot port is broken.
I hope that is not the case :-( When they told me that the board has 2GB of flash, I told them that u-boot only reported 16MB. I was told not to worry about it. Vendor saves firmware for their chip (which is a PCI-e device on the board), their config files and VAR partition for their Linux image is stored in the 2GB flash. Do I need to push them to clarify as to why their u-boot is not reporting the correct flash sizes?
>Otherwise you need to burn the U-Boot image into your NOR FLASH and just hope
>that it works. A JTAG debugger would be handy if it doesn't work though.
We have Lauterback Power Debug Interface and TRACE32 software CD. I have been told that it does support JTAG burning. Now I need to investigate it.
Thanks for your reply,
- Vikas
-----Original Message-----
From: Stefan Roese [mailto:sr at denx.de]
Sent: Thursday, December 08, 2011 2:30 AM
To: u-boot at lists.denx.de
Cc: Sontakke, Vikas; wd at denx.de
Subject: Re: [U-Boot] How to test a new u-boot image over network?
Hi Vikas,
On Wednesday 07 December 2011 23:13:18 vikas.sontakke at emc.com wrote:
> I do know that the board has NAND flash and it is seen by the u-boot.
>
> FLASH: 16 MB
> NAND: 1024 MiB
>
> The vendor has told us that the actual flash is lot bigger than reported by
> u-boot.
Then the vendor U-Boot port is broken.
> > (assuming your out-of-tree port supports NAND booting)
>
> How do I find this out?
NAND booting required that chip-select 0 is connected to the NAND chip. If
your board usually boots from NOR, then it is connected to the NOR FLASH chip.
The AMCC/APM evaluation boards have a jumper to toggle this chip-select
between NAND and NOR. If your custom board doesn't have such a means to toggle
the CS0 then you have no chance to boot from NAND.
Another idea would be to build a rambooting U-Boot target for your board. This
is supported for Sequoia. But not for Canyonlands. You might want to take a
look at that.
Otherwise you need to burn the U-Boot image into your NOR FLASH and just hope
that it works. A JTAG debugger would be handy if it doesn't work though.
Best regards,
Stefan
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