forgetful...

[Nathanael Noblet]

Hello,
    I've tried google for the last 5 minutes. I can't remember how to 
backup the original BIOS. I fried my working flash copy of it, and have 
only the original, which I'd like to extract and put into another 
working part as safety, but can't find how I did it in the first place.

[ron minnich]

flash_rom -r will do it.

Or if you are using MTD, just 
cat /dev/mtd0 > some_random_file

will do it.

If this works, send me a FAQ entry and I'll put it on there. :-)

ron

forgetful... *dumpdevmem inconsistency*

[Peter Fox]

I think you were advised to use dumpdevmem in the utils directory before.

I've just been trying to use it myself, and discovered that the output is not
that of my BIOS.

I have a 256k bios, so tried

dumpdevmem 0xFFFC0000 0x40000 > file

Of course, it didn't produce the correct data until I tried

dumpdevmem 0xFFFC 0x40000 > file

but dumpdevmem --help says:

Usage: ./dumpdevmem [high 16 bits of base address [size]]
Dumps dev mem, starting at either argv[1]<<16 or (default) 0xffe00000 for
0x200000 bytes (i.e. last 2MB of memory
Example: ./dumpdevmem 0xfff00000 0x100000  <<<<<<<<<<<<<<<<<<<<<<<< Wrong !
Dumps last 1M of memory to stdout

Personally, I would prefer the base address to be not shifted, as that has the
least suprise for me, so get rid of all those <<16.

I still can't get flash_rom to recognise my AM29F040 though.

-----Original Message-----
  From: [e-mail]
  [mailto:[e-mail]]On Behalf Of Nathanael Noblet
  Sent: 13 October 2003 18:00
  To: [e-mail]
  Subject: forgetful...

Hello,
    I've tried google for the last 5 minutes. I can't remember how to
  backup the original BIOS. I fried my working flash copy of it, and have
  only the original, which I'd like to extract and put into another
  working part as safety, but can't find how I did it in the first place.

T/F 403.288.5360
  C 403.809.5368

http://www.gnat.ca/

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