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putDebugChar ('+')


Hello,
Good to saw my email! I am porting RedBoot atlas to my own boards ?°1060?±, I need your help to resolve my problem, the porting table below:

 

 

      Hardware Device 
     
       
     Atlas
     1060
     
      Cpu Type
     Support: MIPS32 4Kc, MIPS 4Kp, MIPS 4Km, MIPS64 5Kc.
     Ti?ˉs TNETV1060, MIPS32 4KEc core + DSP.
     
       

      Flash
      

      Flsh EEPROM Device: Intel 28F640J5, Width: 16 * 2, Starts at: 0x1C000000.
     Flsh EEPROM Device: Intel 28F320C/C3-T, Width: 16 * 2, Size: 4M*2,  Starts at: 0x10000000, CS0_SDRAM Address: 0x1000:0000?a0x11FF:FFFF.
     
       

      Sdram
      

      Target RAM Starts: 0xA0000000.
     Tartget RAM Starts: 0x00000000, Size: 8M * 2, CS1_SDRAM Address: 0x1400:0000?a0x17FF:FFFF
     
      Serial Port
     16C550C Compatible UART.
     Initialize internal UART.
     
      PCI
     Support.
     Nonsupport.
     
      Ethernet
     Philips SAA9730 IO Chip Ethernet Interface.
     CPU Support Ethernet.
     

 

Now, the RedBoot can run a part, First, RedBoot run form Srom, BFC00000, then jump to B0000000 still run, when run to "jal initialize_stub" the system breakdown. I trace "initialize_stub" into ?-/hal/common/v2_0/src/generic-stub.c, I'm confused about routine below: 

 

initialize_stub (void)

{

  set_debug_traps ();




  initHardware ();



  putDebugChar ('+');



//    Turn off the GPIO11, GPIO12 (C)    

             *((volatile unsigned int *) 0x08610a10) = 0xFFFFFFFF;

}

 

This routine ?°putDebugChar(??+?ˉ);?±, break my board down.

1.       Is that UART initialize faile?

2.       What is 16C550C in atlas broad, how can I modify the ser16c550c.c?

3.   I have changed serial registers to support my cpu, but nothing changed?



Thank a lot!

                                                                      

Henry

8/21/2005

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