ARM64: ACPI: enable ACPI_SPCR_TABLE

SBBR mentions SPCR as a mandatory ACPI table.  So enable it for ARM64

Earlycon should be set up as early as possible.  ACPI boot tables are
mapped in arch/arm64/kernel/acpi.c:acpi_boot_table_init() that
is called from setup_arch() and that's where we parse SPCR.
So it has to be opted-in per-arch.

When ACPI_SPCR_TABLE is defined initialization of DT earlycon is
deferred until the DT/ACPI decision is done.  Initialize DT earlycon
if ACPI is disabled.

Acked-by: Will Deacon <[email protected]>
Acked-by: Hanjun Guo <[email protected]>
Signed-off-by: Aleksey Makarov <[email protected]>
Tested-by: Kefeng Wang <[email protected]>
Tested-by: Christopher Covington <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions