Hi all,
Current snapshots of Debian Jessie installer snapshots, as well as the
kernel packages, support providing the system console information via
the chosen node 'stdout-path' property instead of on the command line.
This is enabled by two patches backported from 3.17 to Jessie's 3.16
kernel, together with three small patches currently in Linus's tree,
awaiting 3.19-rc1.
The first two are actually sufficient for models, but the additional
ones are required to be able to specify options (like baudrate).
The commits are:
>From 3.16
a208ffd251d08ed7ba6bdf3ae1e423373fb12d3d - of: Enable console on
serial ports specified by /chosen/stdout-path
3482f2c52b77bf6596e24aae82e204a0603eba66 - of: Create
of_console_check() for selecting a console specified in /chosen
>From current Linus
2a9d832cc9aae21ea827520fef635b6c49a06c6d - of: Add bindings for
chosen node, stdout-path
75c28c09af99a0db0ccd8b4395469761aa736543 - of: add optional options
parameter to of_find_node_by_path()
7914a7c5651a51617d952e8fa745000ed8c4f001 - of: support passing console
options with stdout-path
Linaro 2014.12 UEFI release sets this option for FVP/Foundation Base
models.
QEMU 2.2 does the same for all (?) arm64 platforms.
ACPI platforms will be able to do something similar with SPCR.
/
Leif
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