[PATCH v6 2/5] drivers: sysreset: Add sysreset op that can take arguments
Tom Rini
trini at konsulko.com
Mon Feb 16 16:29:06 CET 2026
On Mon, Feb 16, 2026 at 11:01:02AM +0530, Varadarajan Narayanan wrote:
> On Fri, Feb 13, 2026 at 01:20:10PM -0700, Simon Glass wrote:
> [ . . . ]
>
> > > > > > I haven't been following this, but what sort of args are you planning to pass?
> > > > >
> > > > > As of now, an argument to indicate reboot to emergency download mode.
> > > >
> > > > So how about adding a struct in sysreset.h where you can include a
> > > > flag word and create a single flag for your case? We should be able to
> > > > handle reset without the cmdline being enabled.
> > > >
> > > > There are other cases where this would be useful, e.g. an EFI app
> > > > rebooting into setup boot.
> > >
> > > Previously, i.e. v5 [1] didn't have SYSRESET_CMD_RESET_ARGS config
> > > option. This was added to avoid bloat code size for platforms that will
> > > not need this. Please see [2]
> >
> > Sure, but you are adding a new method, so you could make it take a new
> > struct instead of the string list, still behind your Kconfig option.
>
> Sure.
>
> You want 'request_arg' function pointer to take a structure instead of
> 'char * const argv[]'. Is this understanding correct?
>
> If yes, this string list is what was given in the command line. And is
> passed to the implementation specific handler.
>
> Command line -> do_reset -> sysreset_walk_arg -> *request_arg
>
> The implementation specific handler can interpret the argv[] as
> applicable to itself. Not sure how to convert/parse this to a struct
> that can be used by EFI app. Am I missing something. Please advice.
Varada, do you think this suggestion is taking things in a useful
direction? It's unclear to me at this point if what Simon suggested is
going to provide something meaningfully more clear / useful or not.
Thanks.
--
Tom
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