[PATCH v2 1/2] ArmPkg/Include: Add standard SMC function IDs for MM interface.

[Supreeth Venkatesh <supreeth.venkatesh@arm.com>]

This patch adds a list of function IDs that fall under the standard
SMC range as defined in
http://infocenter.arm.com/help/topic/com.arm.doc.den0060a/DEN0060A_ARM_MM_Interface_Specification.pdf.

SMCs associated with Management Mode are in the range 0xC4000040 -
0xC400005f (64 bit) and 0x84000040 - 0x8400005f (32 bit).

The function(s) available to the normal world:
1. Request services from the secure MM environment using MM_COMMUNICATE.

It also defines MM return codes.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
---
 ArmPkg/Include/IndustryStandard/ArmStdSmc.h | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/ArmPkg/Include/IndustryStandard/ArmStdSmc.h b/ArmPkg/Include/IndustryStandard/ArmStdSmc.h
index 593a3ce729..37d0796649 100644
--- a/ArmPkg/Include/IndustryStandard/ArmStdSmc.h
+++ b/ArmPkg/Include/IndustryStandard/ArmStdSmc.h
@@ -1,6 +1,6 @@
 /** @file
 *
-*  Copyright (c) 2012-2014, ARM Limited. All rights reserved.
+*  Copyright (c) 2012-2017, ARM Limited. All rights reserved.
 *
 *  This program and the accompanying materials
 *  are licensed and made available under the terms and conditions of the BSD License
@@ -40,6 +40,24 @@
 #define ARM_SMC_STD_REVISION_MAJOR    0x0
 #define ARM_SMC_STD_REVISION_MINOR    0x1
 
+/*
+ * Management Mode (MM) calls cover a subset of the Standard Service Call range.
+ * The list below is not exhaustive.
+ */
+#define ARM_SMC_ID_MM_VERSION_AARCH32              0x84000040
+#define ARM_SMC_ID_MM_VERSION_AARCH64              0xC4000040
+
+// Request service from secure standalone MM environment
+#define ARM_SMC_ID_MM_COMMUNICATE_AARCH32          0x84000041
+#define ARM_SMC_ID_MM_COMMUNICATE_AARCH64          0xC4000041
+
+/* MM return error codes */
+#define ARM_SMC_MM_RET_SUCCESS              0
+#define ARM_SMC_MM_RET_NOT_SUPPORTED       -1
+#define ARM_SMC_MM_RET_INVALID_PARAMS      -2
+#define ARM_SMC_MM_RET_DENIED              -3
+#define ARM_SMC_MM_RET_NO_MEMORY           -4
+
 /*
  * Power State Coordination Interface (PSCI) calls cover a subset of the
  * Standard Service Call range.
-- 
2.14.1