[U-Boot] Questions about U-boot of customized MPC8315E board
zhenhuan
dev_du at 163.com
Fri Apr 26 06:42:52 CEST 2013
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 at 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
>
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