Re: bootmode=c ask for root device

["DaBar0nZ s0nik42" <s0nik42%hotmail.com@localhost>]

> Hi,
>
> NetBSD/mipsco doesn't do anything with the bootmode environment
> variable - it is only used by the PROM monitor at startup time.
>
> According to the documentation I have:
>
>   If bootmode is c, the PROM monitor does a cold boot.   A cold boot loads
>   the file specified by the environment variable bootfile and passes it
>   the argument -a.  Typically, bootfile is the standalone shell (sash).
>   Sash interprets the -a option as a request to load the operating system
>   as specified in the volume header of the device from which sash was
>   loaded.

Is it a electronical documentation ? or a parper one ?

> In NetBSD speak, the -a option is a "ask for root device" the logic of
> which is defined in sys/boot_flag.h as:
>
>         switch (arg) {                                          \
>         case 'a': /* ask for file name to boot from */          \
>                 (retval) |= RB_ASKNAME;                         \
>                 break;                                          \
>
> Therefore, it is behaving as expected for NetBSD, but maybe not for
> RISC/os
>
> The MD layer is capable of over-riding the behavour, but as it stands it
> passes the flags thru for default *BSD type behavour.
>
> If this is causing a problem for you in some way could you give us more
> detail on why you consider this an issue.

No problem for me, the only think I need is a standalone boot.
how do you want to process ?  reading a PROM variable telling the kernel
to overide -a argument if set ?

Julien

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