ArmPlatformPkg/ArmPlatformLib: Renamed ArmPlatformInitialize into ArmPlatformSecIniti...
[mirror_edk2.git] / ArmPlatformPkg / ArmRealViewEbPkg / Library / ArmRealViewEbLibRTSM / ArmRealViewEb.c
1 /** @file
2 *
3 * Copyright (c) 2011, ARM Limited. All rights reserved.
4 *
5 * This program and the accompanying materials
6 * are licensed and made available under the terms and conditions of the BSD License
7 * which accompanies this distribution. The full text of the license may be found at
8 * http://opensource.org/licenses/bsd-license.php
9 *
10 * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12 *
13 **/
14
15 #include <Library/IoLib.h>
16 #include <Library/ArmPlatformLib.h>
17 #include <Library/DebugLib.h>
18 #include <Library/PcdLib.h>
19 #include <Drivers/PL341Dmc.h>
20
21 /**
22 Return if Trustzone is supported by your platform
23
24 A non-zero value must be returned if you want to support a Secure World on your platform.
25 ArmPlatformTrustzoneInit() will later set up the secure regions.
26 This function can return 0 even if Trustzone is supported by your processor. In this case,
27 the platform will continue to run in Secure World.
28
29 @return A non-zero value if Trustzone supported.
30
31 **/
32 UINTN
33 ArmPlatformTrustzoneSupported (
34 VOID
35 )
36 {
37 // There is no Trustzone controllers (TZPC & TZASC) and no Secure Memory on RTSM
38 return FALSE;
39 }
40
41 /**
42 Initialize the Secure peripherals and memory regions
43
44 If Trustzone is supported by your platform then this function makes the required initialization
45 of the secure peripherals and memory regions.
46
47 **/
48 VOID
49 ArmPlatformTrustzoneInit (
50 VOID
51 )
52 {
53 ASSERT(FALSE);
54 }
55
56 /**
57 Remap the memory at 0x0
58
59 Some platform requires or gives the ability to remap the memory at the address 0x0.
60 This function can do nothing if this feature is not relevant to your platform.
61
62 **/
63 VOID
64 ArmPlatformBootRemapping (
65 VOID
66 )
67 {
68 // Disable memory remapping and return to normal mapping
69 MmioOr32 (ARM_EB_SYSCTRL, BIT8); //EB_SP810_CTRL_BASE
70 }
71
72 /**
73 Return the current Boot Mode
74
75 This function returns the boot reason on the platform
76
77 **/
78 EFI_BOOT_MODE
79 ArmPlatformGetBootMode (
80 VOID
81 )
82 {
83 return BOOT_WITH_FULL_CONFIGURATION;
84 }
85
86 /**
87 Initialize controllers that must setup at the early stage
88
89 Some peripherals must be initialized in Secure World.
90 For example, some L2x0 requires to be initialized in Secure World
91
92 **/
93 VOID
94 ArmPlatformSecInitialize (
95 VOID
96 ) {
97 // Do nothing yet
98 }
99
100 /**
101 Initialize controllers that must setup in the normal world
102
103 This function is called by the ArmPlatformPkg/Pei or ArmPlatformPkg/Pei/PlatformPeim
104 in the PEI phase.
105
106 **/
107 VOID
108 ArmPlatformNormalInitialize (
109 VOID
110 )
111 {
112 // Nothing to do here
113 }
114
115 /**
116 Initialize the system (or sometimes called permanent) memory
117
118 This memory is generally represented by the DRAM.
119
120 **/
121 VOID
122 ArmPlatformInitializeSystemMemory (
123 VOID
124 )
125 {
126 // We do not need to initialize the System Memory on RTSM
127 }