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MG35SerialConsole

This version was saved 17 years, 8 months ago View current version Page history

Saved by PBworks
on August 14, 2006 at 12:55:44 am

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With the comm port set to 38400-8-N-1, we get the following output:

Jasper Bootloader v1.0.0 (Feb 10 2006 15:34:08)                                               
  Supports BootMenu Flash Network                                 
This version of fips use micom with power control, version[3]                                                             
Swapping erase regions for broken CFI table.                                            
0031.0032 mfr 00ec id 2275 Top bootsector                                         
Flash 0 at address 0x00000000                             
  ID : AMD/Fujitsu Standard                           
  Size : 4096 KB                
  Regions : 2             
    0 : 0x003e0000 - 0x00004000 *  8                                    
    1 : 0x00000000 - 0x00020000 * 31                                    
0BF0IDENTIFY FAILED                   

Inptr=
00000014
Inflating....

Final Inptr=000A27FD
Original LEN =0014BB48OutCnt = 0014BB48
Original CRC =B1201065
Computed CRC =B1201065
01008000

If you hold down any key as you power on the device, the sequence stops after "This version of fips..." and the MG35 is waiting for a pasword to be entered. The correct password is:

MediaGate.

Note the capitalization and the period at the end.

Commands

On the serial console we have commands to download kernel and cramfs filesystem, and even flash them.

pbarette: The bootloader saves the config settings, but I can't get it to save a new default serial baudrate. I usually connect at 38400 then issue "config serial 115200" and disconnect, change the baud on my comm port and reconnect. Since the serial interface is a 3-wire deal, the MG35 doesn't notice the dis/re-connect at all.

Todo: add here the commands.

gadgetmind:

What "boot image" expects is a full rom image at 0x1400000

So -

boot> memcpy 0x1400000 0 0x400000 (4MBytes of rom to 0x1400000)

boot> boot image

Results in a successful inflate of the kernel and the box booting. However, it's currently hard to tell if it's using the new kernel and/or cramFS.

I guess I'd also need -

mem wl 0x1440000 0x014e2809

to tell it to use the new cramFS

pbarette:

The command "flash romfs" erases the flash region from "0x40000" to "0x3FFFFF" then it writes the contents of "0x1400000" into that flash region. So I didn't try to use memcpy to do that.

Also note that there's an unlisted "config save" command, but that doesn't seem to change the default baudrate either.