[U-Boot-Users] Problem about sdram initialization！

[U-Boot-Users] Problem about sdram initialization！

[junping feng]

   Hi,I have a little problem with the ppcboot startup,the BDI2000 can program ppcboot.bin into FLASH .Board information can print through serial interface after the first initialization of board now.
    But when it run to the function relocate_code(in the /cpu/mpc8260/start.s),it don't run continually. Through LED on the board ,I find that it stops at the code below:
 
addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
mtlr r0
blr
in_ram:
 
 
The size  of  SDRAM  size is 16MB,flash is 8MB,CPU is MPC8250,and my costum board is like the board MPC8260ADS.Othe infomation with my board is below:
CLKIN:33M 
MPTPR:0x10 
PSRT:0x1900 
BR2(control SDRAM): 0x0000 0041 
OR2:0xFF80 3080 
PSDMR: 0x2869 A452
       0x0869 A452 
       0x1869 A452 
       0x4069 A452 
SIUMCR?0x0A20 0000 
 
 
 
Please give me a hand.
 
Thanks in advance!
 
 
 
 



__________________________________________________
???????????????
http://cn.mail.yahoo.com
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[U-Boot-Users] Problem about sdram initialization!

[Nghiem, Tien]

Hi,
 
The ppcboot is a very old version of the bootloader. Why don't you use the lastest version of the u-boot: u-boot-1.1.2?
 
Tien

-----Original Message-----
From: u-boot-users-admin@lists.sourceforge.net [mailto:u-boot-users-admin at lists.sourceforge.net]On Behalf Of junping feng
Sent: Wednesday, July 13, 2005 7:47 AM
To: u-boot-users at lists.sourceforge.net
Subject: [U-Boot-Users] Problem about sdram initialization!


   Hi,I have a little problem with the ppcboot startup,the BDI2000 can program ppcboot.bin into FLASH .Board information can print through serial interface after the first initialization of board now.
    But when it run to the function relocate_code(in the /cpu/mpc8260/start.s),it don't run continually. Through LED on the board ,I find that it stops at the code below:
 
addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
mtlr r0
blr
in_ram:
 
 
The size  of  SDRAM  size is 16MB,flash is 8MB,CPU is MPC8250,and my costum board is like the board MPC8260ADS.Othe infomation with my board is below:
CLKIN:33M 
MPTPR:0x10 
PSRT:0x1900 
BR2(control SDRAM): 0x0000 0041 
OR2:0xFF80 3080 
PSDMR: 0x2869 A452
       0x0869 A452 
       0x1869 A452 
       0x4069 A452 
SIUMCR?0x0A20 0000 
 
 
 
Please give me a hand.
 
Thanks in advance!
 
 
 
 

__________________________________________________
???????????????
http://cn.mail.yahoo.com

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[U-Boot-Users] Problem about sdram initialization！

[Wolfgang Denk]

In message <20050713114719.92457.qmail@web15708.mail.cnb.yahoo.com> you wrote:
> 
> Hi,I have a little problem with the ppcboot startup,the BDI2000 can
> program ppcboot.bin into FLASH .Board information can print through
> serial interface after the first initialization of board now.

If you are looking for help you should not be so ignorant.

I told you before (in private mail) that you are supposed to:

* not post HTML; you post HTML again

* not to use proprietary data formats like "rar" archives; you did it again.

> The size  of  SDRAM  size is 16MB,flash is 8MB,CPU is MPC8250,and my costum board is like the board MPC8260ADS.Othe infomation with my board is below:

"like" another board means it is not  identical.  like  is  not  good
enough. You will have to port U-Boot to your own board.

> Please give me a hand.

After you ignored are hints given to you? That's hard.

> --0-304857347-1121255239=:83888
> Content-Type: text/html; charset=gb2312
> Content-Transfer-Encoding: 8bit
> 
> <DIV>
> <DIV>

Please NEVER post HTML here.

> Content-Type: application/octet-stream; name="MPC8260ADS.rar"
> Content-Transfer-Encoding: base64
> Content-Description: 1269557957-MPC8260ADS.rar
> Content-Disposition: attachment; filename="MPC8260ADS.rar"

Please NEVER use proprietary, non-standard data formats.

Attachment unreadable, ignored.


Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
War is never imperative.
	-- McCoy, "Balance of Terror", stardate 1709.2

[U-Boot-Users] Problem about sdram initialization！

[Jerry Van Baren]

junping feng wrote:
>    Hi,I have a little problem with the ppcboot startup,the BDI2000 can 
> program ppcboot.bin into FLASH .Board information can print through 
> serial interface after the first initialization of board now.
>     But when it run to the function relocate_code(in the 
> /cpu/mpc8260/start.s),it don't run continually. Through LED on the board 
> ,I find that it stops at the code below:
>  
> addi r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
> mtlr r0
> blr
> in_ram:
>  
>  
> The size  of  SDRAM  size is 16MB,flash is 8MB,CPU is MPC8250,and my 
> costum board is like the board MPC8260ADS.Othe infomation with my board 
> is below:
> CLKIN:33M
> MPTPR:0x10
> PSRT:0x1900
> BR2(control SDRAM): 0x0000 0041
> OR2:0xFF80 3080
> PSDMR: 0x2869 A452
>        0x0869 A452
>        0x1869 A452
>        0x4069 A452
> SIUMCR?0x0A20 0000
>  
>  
>  
> Please give me a hand.
>  
> Thanks in advance!

You need to fix your SDRAM initialization.  We cannot help you with
this.  You need to read and reread the data sheets _for the SDRAM you
are using_ and figure out what the proper initialization sequence and
register values are.

gvb