close to porting success.....

2003-12-15 Thread Ricardo Scop 

Hello Qsyang,

Sunday, December 14, 2003, 11:21:08 PM, you wrote:

Q  Thanks a million. My BDI2000 configuration file is quite simple
Q because i try to keep a clean CPU environment when using BDI
Q Debugger.The config file is printed below:

Q  [INIT]
Q  ; init core register
Q  WSPR   149 0x2006000F  ;DER  : enable SYSIE for BDI 
flash progr.

Q  WSPR   638 0xFF00  ;IMMR : internal memory at 
0xFF00
Q  WSPR   158 0x0007  ;ICTRL: not serialized, no 
show cycles
Q  ; init SIU register
Q  WM32   0xFF00  0x00200400  ;SIUMCR
Q  WM32   0xFF04  0xFF03  ;SYPCR  :enable bus monitor, 
disable software watchdog

Q  [TARGET]
Q  CPUTYPEMPC800
Q  CPUCLOCK5000   ;the CPU clock rate after processing the 
init list
Q  
Q  

Q What's wrong in this file? I don't think anything mentioned here
Q about UPM, so...?

So, mas guess was wrong :(. SDRAM initialization is done in uBoot...
and works well whilw running with a BDI2000.

Sorry, I'm out of ideas right now :(

Good luck,

-Scop.

MPC8xx's sdram initialization is related to UPM init and this is not
so simple. Copy the initialization code from BDI2000 to uboot

  I am porting U-boot-1.0.0 to my custom MPC8xx board and success is
 being expectted coming soon(maybe too conceited^^). Now i have a
 question which describes below. So far it is working fine when i am
 using BDI2000 and runing 'BDIgo 0x02800100' in Telnet console,and
 then all the U-boot commands are working very well. But when i
 disconnected BDI and power on board directly ,U-Boot crasheed after
 relocation to RAM. FAQ say that SDRAM initialization is bad ,if
 this is the case why it is OK when using BDI to boot it. What's the
 difference between the two conditions? Maybe some hardware problem?

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close to porting success.....

2003-12-12 Thread Ricardo Scop 

Hi Qsyang:

On Friday 12 December 2003 04:36, Qsyang wrote:
 dear all,
  I am porting U-boot-1.0.0 to my custom MPC8xx board and success is
 being expectted coming soon(maybe too conceited^^). Now i have a
 question which describes below.
 So far it is working fine when i am using BDI2000 and runing 'BDIgo
 0x02800100' in Telnet console,and then all the U-boot commands are
 working very well.
  But when i disconnected BDI and power on board directly ,U-Boot
 crasheed after relocation to RAM. FAQ say that SDRAM initialization is
 bad ,if this is the case why it is OK when using BDI to boot it. What's
 the difference between the two conditions? Maybe some hardware problem?

Maybe there's some SDRAM controller initialization in BDI2000 configuration
file that's missing in your U-boot code. You should check this first.

Have fun,

-Scop.


   Any help would be highly appreciated !


 Qsyang



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