diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLibBhyve.c | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLibBhyve.c')
| -rw-r--r-- | roms/edk2/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLibBhyve.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/roms/edk2/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLibBhyve.c b/roms/edk2/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLibBhyve.c new file mode 100644 index 000000000..f927e2718 --- /dev/null +++ b/roms/edk2/OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLibBhyve.c @@ -0,0 +1,32 @@ +/** @file
+ Provide InternalAcpiGetTimerTick for the bhyve instance of the
+ Base ACPI Timer Library
+
+ Copyright (C) 2020, Rebecca Cran <rebecca@bsdio.com>
+ Copyright (C) 2014, Gabriel L. Somlo <somlo@cmu.edu>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+**/
+
+#include <Library/IoLib.h>
+#include <OvmfPlatforms.h>
+
+/**
+ Internal function to read the current tick counter of ACPI.
+
+ Read the current ACPI tick counter using the counter address cached
+ by this instance's constructor.
+
+ @return The tick counter read.
+
+**/
+UINT32
+InternalAcpiGetTimerTick (
+ VOID
+ )
+{
+ //
+ // Return the current ACPI timer value.
+ //
+ return IoRead32 (BHYVE_ACPI_TIMER_IO_ADDR);
+}
|