[U-Boot] How to boot a newer version of u-boot from a older one?

[Bear]

hi,
Could you tell me which configuration should I use? There are 4 
configurations for MPC8313ERDB...
 >> MPC8313ERDB_33               powerpc     mpc83xx     mpc8313erdb 
freescale      -           MPC8313ERDB:SYS_33MHZ
 >> MPC8313ERDB_66               powerpc     mpc83xx     mpc8313erdb 
freescale      -           MPC8313ERDB:SYS_66MHZ
 >> MPC8313ERDB_NAND_33          powerpc     mpc83xx     mpc8313erdb 
freescale      -           MPC8313ERDB:SYS_33MHZ,NAND_U_BOOT
 >> MPC8313ERDB_NAND_66          powerpc     mpc83xx     mpc8313erdb 
freescale      -           MPC8313ERDB:SYS_66MHZ,NAND_U_BOOT
 >

创业维艰，缅怀诸先烈。守成不易，莫徒务近功。

On 6/5/2011 3:14 PM, Aggrwal Poonam-B10812 wrote:
> I am not sure of the correct make option though, but you must try flashing NAND flash with NAND boot loader and do experiments there.
> It would be good not to tamper with the existing NOR boot loader for now.
> =>  tftp 1000000 u-boot-nand.bin
> =>  nand erase 0 80000
> =>  nand write 1000000 0 80000
>
> Switch off the board.
> Change the switch settings to boot from NAND.
> And switch on the board.
>
> Regards
> Poonam
>
>> -----Original Message-----
>> From: u-boot-bounces at lists.denx.de [mailto:u-boot-bounces at lists.denx.de]
>> On Behalf Of Lingfeng Xiong
>> Sent: Sunday, June 05, 2011 12:24 PM
>> To: u-boot at lists.denx.de
>> Subject: [U-Boot] How to boot a newer version of u-boot from a older one?
>>
>> hi there,
>> I bought a Freescale MPC8313E-RDB some days before. The version of u-boot
>> on that board is quite old and I wanna run a newer one. I have already
>> built the latest git version of u-boot for that board. But I found there
>> are several configuration files:
>>> MPC8313ERDB_33               powerpc     mpc83xx     mpc8313erdb
>> freescale      -           MPC8313ERDB:SYS_33MHZ
>>> MPC8313ERDB_66               powerpc     mpc83xx     mpc8313erdb
>> freescale      -           MPC8313ERDB:SYS_66MHZ
>>> MPC8313ERDB_NAND_33          powerpc     mpc83xx     mpc8313erdb
>> freescale      -           MPC8313ERDB:SYS_33MHZ,NAND_U_BOOT
>>> MPC8313ERDB_NAND_66          powerpc     mpc83xx     mpc8313erdb
>> freescale      -           MPC8313ERDB:SYS_66MHZ,NAND_U_BOOT
>>
>> My board is Rev C and all switches are in factory default, could you tell
>> me which configuration should I use?
>>
>> For I have no USBTAP, there are no way for me to flush either NOR Flash
>> or NAND Flash, so I am afraid if I install my u-boot to NOR Flash and
>> that u-boot cannot run correctly, my board would be unavailable. So I
>> wanna boot the latest version of u-boot from the original one. I tried
>> these:
>> =>  tftp 0x01000000 u-boot.bin
>> =>  go 0x01000000
>>
>> But my board reset automatically. Could you tell me how to do with this?
>> Thanks.
>>
>>
>>
>> --
>> 创业维艰，缅怀诸先烈。守成不易，莫徒务近功。
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