[edk2-platforms][PATCH V1 01/17] Platform/Sgi: Macro definitions for ACPI _OSC

["Pranav Madhu" <pranav.madhu@arm.com>]

Add helper macros required for use with ACPI Operating System
Capabilities (_OSC) control method. The macros for capability DWORD and
return status value DWORD are defined.

Signed-off-by: Pranav Madhu <pranav.madhu@arm.com>
---
 Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h b/Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h
index 57f6a8444b63..4977d4d898aa 100644
--- a/Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h
+++ b/Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h
@@ -23,6 +23,22 @@
 #define CORE_COUNT      FixedPcdGet32 (PcdCoreCount)
 #define CLUSTER_COUNT   FixedPcdGet32 (PcdClusterCount)
 
+// ACPI OSC Status bits
+#define OSC_STS_BIT0_RES              (1U << 0)
+#define OSC_STS_FAILURE               (1U << 1)
+#define OSC_STS_UNRECOGNIZED_UUID     (1U << 2)
+#define OSC_STS_UNRECOGNIZED_REV      (1U << 3)
+#define OSC_STS_CAPABILITY_MASKED     (1U << 4)
+#define OSC_STS_MASK                  (OSC_STS_BIT0_RES          | \
+                                       OSC_STS_FAILURE           | \
+                                       OSC_STS_UNRECOGNIZED_UUID | \
+                                       OSC_STS_UNRECOGNIZED_REV  | \
+                                       OSC_STS_CAPABILITY_MASKED)
+
+// ACPI OSC for Platform-Wide Capability
+#define OSC_CAP_CPPC_SUPPORT          (1U << 5)
+#define OSC_CAP_OS_INITIATED_LPI      (1U << 8)
+
 #pragma pack(1)
 // PPTT processor core structure
 typedef struct {
-- 
2.17.1