[PATCH 1/1] ArmPkg/Include: Add standard SMC and SVC 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.

SVCs are in the range 0xC4000060 - 0xC400007f.
The functions available to the secure MM partition:
1. Signal completion of MM event handling.
2. Set/Get memory attributes for a memory region at runtime.
3. Get version number of secure partition manager.

Also, it defines memory attributes and 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 | 46 ++++++++++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/ArmPkg/Include/IndustryStandard/ArmStdSmc.h b/ArmPkg/Include/IndustryStandard/ArmStdSmc.h
index 593a3ce729..a625bc2048 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 +40,50 @@
 #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
+
+/*
+ * SVC IDs to allow the MM secure partition to initialise itself, handle
+ * delegated events and request the Secure partition manager to perform
+ * privileged operations on its behalf.
+ */
+#define ARM_SVC_ID_SPM_VERSION_AARCH64             0xC4000060
+#define ARM_SVC_ID_SP_EVENT_COMPLETE_AARCH64       0xC4000061
+#define ARM_SVC_ID_SP_GET_MEM_ATTRIBUTES_AARCH64   0xC4000064
+#define ARM_SVC_ID_SP_SET_MEM_ATTRIBUTES_AARCH64   0xC4000065
+
+#define SET_MEM_ATTR_DATA_PERM_MASK       0x3
+#define SET_MEM_ATTR_DATA_PERM_SHIFT        0
+#define SET_MEM_ATTR_DATA_PERM_NO_ACCESS    0
+#define SET_MEM_ATTR_DATA_PERM_RW           1
+#define SET_MEM_ATTR_DATA_PERM_RO           3
+
+#define SET_MEM_ATTR_CODE_PERM_MASK   0x1
+#define SET_MEM_ATTR_CODE_PERM_SHIFT    2
+#define SET_MEM_ATTR_CODE_PERM_X        0
+#define SET_MEM_ATTR_CODE_PERM_XN       1
+
+#define SET_MEM_ATTR_MAKE_PERM_REQUEST(d_perm, c_perm)                            \
+    ((((c_perm) & SET_MEM_ATTR_CODE_PERM_MASK) << SET_MEM_ATTR_CODE_PERM_SHIFT) | \
+    (( (d_perm) & SET_MEM_ATTR_DATA_PERM_MASK) << SET_MEM_ATTR_DATA_PERM_SHIFT))
+
+/* 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