From: Mike Wellington <wellington@lucent.com>
To: Peter Ryser <Peter.Ryser@xilinx.com>
Cc: linuxppc-embedded@lists.linuxppc.org
Subject: Re: Xilinx ML300 u-boot question
Date: Tue, 13 Apr 2004 12:24:50 -0600 [thread overview]
Message-ID: <407C3072.9070909@lucent.com> (raw)
In-Reply-To: <407C2747.1030709@xilinx.com>
Peter-
That solves part of the problem. I'd still have to either
download a new u-boot via XPS or copy it to the MicroDrive
every time I changed u-boot. I'll do it this way for now,
but it would be better if I built two different u-boots
that are made to execute from different RAM locations. Then
I can download the (changeable) second-stage u-boot via tftp.
-mike wellington
wellington@lucent.com
platform@bithead.com
Peter Ryser wrote:
>
> Mike,
>
> for TFTP boot normally the HW MAC address of the target device is used
> for identification. On the ML300 the HW MAC address is stored inside the
> IIC EEPROM. Since accessing this EEPROM is not yet supported in the
> pusblished U-Boot port for ML300 the MAC address is hardcoded in
> board/xilinx/xilinx_enet/emac_adapter.c.
>
> So, to get a machine specific u-boot for every board change the MAC
> address and recompile. I'm not sure that you would need the secondary
> u-boot then as you could then directly load the Linux kernel in the
> second step.
>
> - Peter
>
>
> Mike Wellington wrote:
>
>>
>> Does anybody know what parameters I should use to
>> load u-boot, using u-boot. That's right, I want to
>> build a generic u-boot that goes on the Microdrive of
>> a Xilinx ML300 development board. I have several of them
>> to manage. I want the generic u-boot to go and download
>> a machine-specific u-boot that I can change on my workstation
>> without having to write it to the microdrive.
>>
>> Or can I just have u-boot start the kernel with no parameters
>> and have all the initial args for the kernel built into the
>> kernel?
>>
>> -mike wellington
>> wellington@lucent.com
>>
>>
>>
>>
>
>
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2004-04-13 18:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-13 15:28 Xilinx ML300 u-boot question Mike Wellington
2004-04-13 17:45 ` Peter Ryser
2004-04-13 18:24 ` Mike Wellington [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-04-13 16:04 VanBaren, Gerald (AGRE)
2004-04-13 17:36 ` Mike Wellington
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