From mboxrd@z Thu Jan  1 00:00:00 1970
From: zhenhuan <dev_du@163.com>
Date: Fri, 26 Apr 2013 12:42:52 +0800
Subject: [U-Boot] Questions about U-boot of customized MPC8315E board
In-Reply-To: <20130425193626.0BC7E38489C@gemini.denx.de>
References: <202dafde.df1f.13e4197224a.Coremail.dev_du@163.com>
	<20130425193626.0BC7E38489C@gemini.denx.de>
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To: u-boot@lists.denx.de

Hi,
About  debug,
Where should I define the macro to enable debug() function definition?
Is there a place in makefile or head file?

On 2013/4/26 3:36, Wolfgang Denk wrote:
> Dear "du zhenhuan",
>
> In message <202dafde.df1f.13e4197224a.Coremail.dev_du@163.com> you wrote:
>> 1, if NAND flash support is enabled,
>> U-boot just print out  "NAND : "  without size info and then print out text like "machine check ...,",
>>   then print out "resetting board ..."
>> So the board keep resetting again and again.
>> Does this  have anything to do with NAND FLASH size change or  NAND PART types?
> It has probably nothing to do with the NAND flash size, but with the
> NAND chip type, and/or with other changes you did for your port.
>
>> 2.if NAND flash support is disabled,
>>   U-boot just go to Ethernet PHY  initialization part and print out that DP83848 is not supported ,
>> Where can I put new driver to support it?
> PHY support is in drivers/net/phy/
>
> Are you sure generic PHY support does not work for you?
>
>> 3.How can I watch more ouput infomation during U-boot boot process to debug these problems ?
> Define DEBUG for the interesting files?
>
> Attach a JTAG debugger und fire up GDB?
>
> Best regards,
>
> Wolfgang Denk
>