On 2/12/18 7:47 AM, Prarit Bhargava wrote:
ACPI SPCR is used by a vendor to define the serial console for a system.  If
SPCR exists a user can add kernel parameter "earlycon" (no extra kernel
parameters) and the console will work out-of-the-box.

"earlycon" is needed only for an *early* console. You don't need any command line parameters for a normal console to work with SPCR.

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