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[time] Add support for the ACPI power management timer

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Allow the ACPI power management timer to be used if enabled via
TIMER_ACPI in config/timer.h.  This provides an alternative timer on
systems where the standard 8254 PIT is unavailable or unreliable.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2018-03-20 17:26:49 +02:00
parent e8e9ca3613
commit 3ec2079ce2
4 changed files with 147 additions and 0 deletions
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3
src/config/config_timer.c
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@@ -46,3 +46,6 @@ REQUIRE_OBJECT ( efi_timer );
#ifdef TIMER_LINUX
REQUIRE_OBJECT ( linux_timer );
#endif
#ifdef TIMER_ACPI
REQUIRE_OBJECT ( acpi_timer );
#endif