On Sat, Aug 24, 2013 at 12:58:23PM +0200, Kay Sievers wrote: > On Sat, Aug 24, 2013 at 6:12 AM, WaLyong Cho <walyong....@samsung.com> wrote: > > On 08/24/2013 01:47 AM, Zbigniew Jędrzejewski-Szmek wrote: > >> On Tue, Aug 13, 2013 at 03:01:25AM +0900, WaLyong Cho wrote: > >>> From: WaLyong Cho <walyong....@samsung.com> > >>> > >>> reboot syscall can be performed with additional argument. In some of > >>> system, this functionality can be useful to ask next boot mode to > >>> bootloader. > >> What are the possible values of this additional argument? > >> What systems support it? > > > > Any string can be. i.e. download and fota(firmware update by air) can > > be. In mobile system(actually tizen), if user try to update the firmware > > by air, then the system should be booted special mode at the next boot. > > To ask this information to bootloader, reboot can use boot parameter. > > EFI supports something similar: > > http://wiki.phoenix.com/wiki/index.php/EFI_RUNTIME_SERVICES#ResetSystem.28.29 > > We need to be careful how to add or support that. If we do that, it > needs to be supported in PID1 and over the D-Bus interface too, I > guess. Right, the first question is whether there's a closed set of options, or do arbitrary strings need to be supported.
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