On Fri, Jan 16, 2015 at 03:08:37AM +0000, Jon Masters wrote:
> Hi Folks,
>
> We're implementing support for SPCR table parsing shortly[0], since it
> will allow to deprecate supplying a "console=" (and eventually, also
> "earlycon=") on 64-bit ARM servers, where it's not always the case that
> we can assume a 16550 at a specific address. SPCR has been provided on
> x86 systems since 2000 but is not (yet) supported by Linux.
For anyone using DT rather than ACPI, the same can be achieved in
mainline with /chosen/stdout-path as of:
7914a7c5651a5161 "of: support passing console options with stdout-path"
Documented in:
2a9d832cc9aae21e "of: Add bindings for chosen node, stdout-path"
e.g.
uart: serial@f00 {
reg = <0xf00 0x200>;
compatible = "vendor,some-serial-device";
};
chosen {
stdout-path = "/serial@f00:115200n8";
};
This will be used for both the console and earlycon. Please make use of
this where possible.
Thanks,
Mark.
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