ICU (Interrupt Consolidation Unit) is a mechanism,
that allows to send a message-based interrupts from the
CP110 unit (South Bridge) to the Application Processor
hardware block. After dispatching the interrupts in the
GIC are generated.

This patch adds a basic version of the library, that
allows to configure a static mapping between CP110
interfaces and GIC. It is required for the cases, where
the OS does not support the ICU controller on its own
(e.g. ACPI boot).

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
---
 Silicon/Marvell/Marvell.dec                    |  1 +
 Silicon/Marvell/Include/Library/ArmadaIcuLib.h | 45 ++++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 Silicon/Marvell/Include/Library/ArmadaIcuLib.h

diff --git a/Silicon/Marvell/Marvell.dec b/Silicon/Marvell/Marvell.dec
index 4def897..616624e 100644
--- a/Silicon/Marvell/Marvell.dec
+++ b/Silicon/Marvell/Marvell.dec
@@ -61,6 +61,7 @@
 
 [LibraryClasses]
   ArmadaBoardDescLib|Include/Library/ArmadaBoardDescLib.h
+  ArmadaIcuLib|Include/Library/ArmadaIcuLib.h
   ArmadaSoCDescLib|Include/Library/ArmadaSoCDescLib.h
   SampleAtResetLib|Include/Library/SampleAtResetLib.h
 
diff --git a/Silicon/Marvell/Include/Library/ArmadaIcuLib.h b/Silicon/Marvell/Include/Library/ArmadaIcuLib.h
new file mode 100644
index 0000000..426734e
--- /dev/null
+++ b/Silicon/Marvell/Include/Library/ArmadaIcuLib.h
@@ -0,0 +1,45 @@
+/**
+*
+*  Copyright (C) 2018, Marvell International Ltd. and its affiliates
+*
+*  This program and the accompanying materials are licensed and made available
+*  under the terms and conditions of the BSD License which accompanies this
+*  distribution. The full text of the license may be found at
+*  http://opensource.org/licenses/bsd-license.php
+*
+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+*
+**/
+#ifndef __ARMADA_ICU_LIB_H__
+#define __ARMADA_ICU_LIB_H__
+
+typedef enum {
+  IcuIrqTypeLevel = 0,
+  IcuIrqTypeEdge  = 1
+} ICU_IRQ_TYPE;
+
+typedef struct {
+  UINTN IcuId;
+  UINTN SpiId;
+  ICU_IRQ_TYPE IrqType;
+} ICU_IRQ;
+
+typedef struct {
+  const ICU_IRQ  *Map;
+  UINTN           Size;
+} ICU_CONFIG_ENTRY;
+
+typedef struct {
+  ICU_CONFIG_ENTRY NonSecure;
+  ICU_CONFIG_ENTRY Sei;
+  ICU_CONFIG_ENTRY Rei;
+} ICU_CONFIG;
+
+EFI_STATUS
+EFIAPI
+ArmadaIcuInitialize (
+  VOID
+  );
+
+#endif /* __ARMADA_ICU_LIB_H__ */
-- 
2.7.4

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