kernel params passed by OF/cmdline/"append="

[Ryan Wang]

Hi,

I know that there are 3 ways to pass params to kernel:
    (1) params set in openfirmware
    (2) when yaboot up, in the prompt "boot: ", specify the label and params
    (3) params in the item "append=" of yaboot.conf

My question is:
How can they combine together? I read some code in yaboot src, but found
that
only 2 cases are available:
      (3) + (1)
      (3) + (2)
If I set params with method 1, 2 and 3, then I'll get the results as 2 + 3
only. That is
      (1) + (2) + (3) = (3) + (2)

Is that right?

thanks,
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