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ACPI: Enable FPDT on arm64 

FPDT provides some boot timing records useful for analyzing
parts of the UEFI boot stack. Given the existing code works
on arm64, and allows reading the values without utilizing
/dev/mem it seems like a good idea to turn it on.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Link: https://lore.kernel.org/r/20221109174720.203723-1-jeremy.linton@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Jeremy Linton 2022-11-09 11:47:20 -06:00 committed by Will Deacon
parent a8731264e5
commit c2465f95c4
2 changed files with 2 additions and 2 deletions
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2
Documentation/arm64/acpi_object_usage.rst
View File

@ -163,7 +163,7 @@ FPDT Section 5.2.23 (signature == "FPDT")
**Firmware Performance Data Table**
Optional, not currently supported.
Optional, useful for boot performance profiling.
GTDT Section 5.2.24 (signature == "GTDT")

2
drivers/acpi/Kconfig
View File

@ -90,7 +90,7 @@ config ACPI_SPCR_TABLE
config ACPI_FPDT
bool "ACPI Firmware Performance Data Table (FPDT) support"
depends on X86_64
depends on X86_64 || ARM64
help
Enable support for the Firmware Performance Data Table (FPDT).
This table provides information on the timing of the system