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1d5d0ae9 | 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 ArmPlatformTrustzoneSupported(VOID) { | |
33 | // There is no Trustzone controllers (TZPC & TZASC) and no Secure Memory on RTSM | |
34 | return FALSE; | |
35 | } | |
36 | ||
37 | /** | |
38 | Initialize the Secure peripherals and memory regions | |
39 | ||
40 | If Trustzone is supported by your platform then this function makes the required initialization | |
41 | of the secure peripherals and memory regions. | |
42 | ||
43 | **/ | |
44 | VOID ArmPlatformTrustzoneInit(VOID) { | |
45 | ASSERT(FALSE); | |
46 | } | |
47 | ||
48 | /** | |
49 | Remap the memory at 0x0 | |
50 | ||
51 | Some platform requires or gives the ability to remap the memory at the address 0x0. | |
52 | This function can do nothing if this feature is not relevant to your platform. | |
53 | ||
54 | **/ | |
55 | VOID ArmPlatformBootRemapping(VOID) { | |
56 | // Disable memory remapping and return to normal mapping | |
57 | MmioOr32 (ARM_EB_SYSCTRL, BIT8); //EB_SP810_CTRL_BASE | |
58 | } | |
59 | ||
a534d714 | 60 | /** |
61 | Return the current Boot Mode | |
62 | ||
63 | This function returns the boot reason on the platform | |
64 | ||
65 | **/ | |
66 | EFI_BOOT_MODE | |
67 | ArmPlatformGetBootMode ( | |
68 | VOID | |
69 | ) | |
70 | { | |
71 | return BOOT_WITH_FULL_CONFIGURATION; | |
72 | } | |
73 | ||
8e06b586 | 74 | /** |
75 | Initialize controllers that must setup at the early stage | |
76 | ||
77 | Some peripherals must be initialized in Secure World. | |
78 | For example, some L2x0 requires to be initialized in Secure World | |
79 | ||
80 | **/ | |
81 | VOID | |
82 | ArmPlatformInitialize ( | |
83 | VOID | |
84 | ) { | |
85 | // Do nothing yet | |
86 | } | |
87 | ||
1d5d0ae9 | 88 | /** |
89 | Initialize the system (or sometimes called permanent) memory | |
90 | ||
91 | This memory is generally represented by the DRAM. | |
92 | ||
93 | **/ | |
94 | VOID ArmPlatformInitializeSystemMemory(VOID) { | |
95 | // We do not need to initialize the System Memory on RTSM | |
96 | } |