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>
20 #include <Drivers/PL341Dmc.h>
21 #include <Drivers/SP804Timer.h>
23 #include <ArmPlatform.h>
26 Return if Trustzone is supported by your platform
28 A non-zero value must be returned if you want to support a Secure World on your platform.
29 ArmPlatformTrustzoneInit() will later set up the secure regions.
30 This function can return 0 even if Trustzone is supported by your processor. In this case,
31 the platform will continue to run in Secure World.
33 @return A non-zero value if Trustzone supported.
37 ArmPlatformTrustzoneSupported (
41 // There is no Trustzone controllers (TZPC & TZASC) and no Secure Memory on RTSM
46 Initialize the Secure peripherals and memory regions
48 If Trustzone is supported by your platform then this function makes the required initialization
49 of the secure peripherals and memory regions.
53 ArmPlatformTrustzoneInit (
61 Remap the memory at 0x0
63 Some platform requires or gives the ability to remap the memory at the address 0x0.
64 This function can do nothing if this feature is not relevant to your platform.
68 ArmPlatformBootRemapping (
72 // Disable memory remapping and return to normal mapping
73 MmioOr32 (ARM_EB_SYSCTRL
, BIT8
); //EB_SP810_CTRL_BASE
77 Return the current Boot Mode
79 This function returns the boot reason on the platform
83 ArmPlatformGetBootMode (
87 return BOOT_WITH_FULL_CONFIGURATION
;
91 Initialize controllers that must setup at the early stage
93 Some peripherals must be initialized in Secure World.
94 For example, some L2x0 requires to be initialized in Secure World
98 ArmPlatformSecInitialize (
105 Initialize controllers that must setup in the normal world
107 This function is called by the ArmPlatformPkg/PrePi or ArmPlatformPkg/PlatformPei
112 ArmPlatformNormalInitialize (
116 // Configure periodic timer (TIMER0) for 1MHz operation
117 MmioOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, SP810_SYS_CTRL_TIMER0_TIMCLK
);
118 // Configure 1MHz clock
119 MmioOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, SP810_SYS_CTRL_TIMER1_TIMCLK
);
120 // configure SP810 to use 1MHz clock and disable
121 MmioAndThenOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, ~SP810_SYS_CTRL_TIMER2_EN
, SP810_SYS_CTRL_TIMER2_TIMCLK
);
122 // Configure SP810 to use 1MHz clock and disable
123 MmioAndThenOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, ~SP810_SYS_CTRL_TIMER3_EN
, SP810_SYS_CTRL_TIMER3_TIMCLK
);
127 Initialize the system (or sometimes called permanent) memory
129 This memory is generally represented by the DRAM.
133 ArmPlatformInitializeSystemMemory (
137 // We do not need to initialize the System Memory on RTSM