3 * Copyright (c) 2011, ARM Limited. All rights reserved.
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
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.
15 #include <Library/IoLib.h>
16 #include <Library/ArmPlatformLib.h>
17 #include <Library/DebugLib.h>
18 #include <Library/PcdLib.h>
31 Return if Trustzone is supported by your platform
33 A non-zero value must be returned if you want to support a Secure World on your platform.
34 ArmPlatformTrustzoneInit() will later set up the secure regions.
35 This function can return 0 even if Trustzone is supported by your processor. In this case,
36 the platform will continue to run in Secure World.
38 @return A non-zero value if Trustzone supported.
42 ArmPlatformTrustzoneSupported (
46 // The BeagleBoard starts in Normal World (Non Secure World)
51 Initialize the Secure peripherals and memory regions
53 If Trustzone is supported by your platform then this function makes the required initialization
54 of the secure peripherals and memory regions.
58 ArmPlatformTrustzoneInit (
66 Remap the memory at 0x0
68 Some platform requires or gives the ability to remap the memory at the address 0x0.
69 This function can do nothing if this feature is not relevant to your platform.
73 ArmPlatformBootRemapping (
77 // Do nothing for the BeagleBoard
81 Return the current Boot Mode
83 This function returns the boot reason on the platform
87 ArmPlatformGetBootMode (
91 return BOOT_WITH_FULL_CONFIGURATION
;
95 Initialize controllers that must setup at the early stage
97 Some peripherals must be initialized in Secure World.
98 For example, some L2x0 requires to be initialized in Secure World
102 ArmPlatformNormalInitialize (
108 // Set up system clocking
113 Initialize the system (or sometimes called permanent) memory
115 This memory is generally represented by the DRAM.
119 ArmPlatformInitializeSystemMemory (
123 // We do not need to initialize the System Memory on RTSM