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ACPI: Enable FPDT on arm64

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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
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@ -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