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| author | Prarit Bhargava <prarit@redhat.com> | 2018-01-18 10:09:51 -0500 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-02-07 11:39:58 +0100 |
| commit | 0231d00082f61cfe03f2b7c27e5356f8cdf0312c (patch) | |
| tree | 24f036cb972640ccdeed395a55d1c37571fcb3db /arch/arm64/kernel | |
| parent | 890674343bb2d546825f713542b1e199f0728732 (diff) | |
| download | linux-stable-0231d00082f61cfe03f2b7c27e5356f8cdf0312c.tar.gz linux-stable-0231d00082f61cfe03f2b7c27e5356f8cdf0312c.tar.bz2 linux-stable-0231d00082f61cfe03f2b7c27e5356f8cdf0312c.zip | |
ACPI: SPCR: Make SPCR available to x86
SPCR is currently only enabled or ARM64 and x86 can use SPCR to setup
an early console.
General fixes include updating Documentation & Kconfig (for x86),
updating comments, and changing parse_spcr() to acpi_parse_spcr(),
and earlycon_init_is_deferred to earlycon_acpi_spcr_enable to be
more descriptive.
On x86, many systems have a valid SPCR table but the table version is
not 2 so the table version check must be a warning.
On ARM64 when the kernel parameter earlycon is used both the early console
and console are enabled. On x86, only the earlycon should be enabled by
by default. Modify acpi_parse_spcr() to allow options for initializing
the early console and console separately.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Mark Salter <msalter@redhat.com>
Tested-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/acpi.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c index b3162715ed78..2aa5609def27 100644 --- a/arch/arm64/kernel/acpi.c +++ b/arch/arm64/kernel/acpi.c @@ -230,10 +230,10 @@ void __init acpi_boot_table_init(void) done: if (acpi_disabled) { - if (earlycon_init_is_deferred) + if (earlycon_acpi_spcr_enable) early_init_dt_scan_chosen_stdout(); } else { - parse_spcr(earlycon_init_is_deferred); + acpi_parse_spcr(earlycon_acpi_spcr_enable, true); if (IS_ENABLED(CONFIG_ACPI_BGRT)) acpi_table_parse(ACPI_SIG_BGRT, acpi_parse_bgrt); } |