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>
24 Return if Trustzone is supported by your platform
26 A non-zero value must be returned if you want to support a Secure World on your platform.
27 ArmPlatformTrustzoneInit() will later set up the secure regions.
28 This function can return 0 even if Trustzone is supported by your processor. In this case,
29 the platform will continue to run in Secure World.
31 @return A non-zero value if Trustzone supported.
35 ArmPlatformTrustzoneSupported (
39 // There is no Trustzone controllers (TZPC & TZASC) and no Secure Memory on RTSM
44 Initialize the Secure peripherals and memory regions
46 If Trustzone is supported by your platform then this function makes the required initialization
47 of the secure peripherals and memory regions.
51 ArmPlatformTrustzoneInit (
59 Remap the memory at 0x0
61 Some platform requires or gives the ability to remap the memory at the address 0x0.
62 This function can do nothing if this feature is not relevant to your platform.
66 ArmPlatformBootRemapping (
70 // Disable memory remapping and return to normal mapping
71 MmioOr32 (ARM_EB_SYSCTRL
, BIT8
); //EB_SP810_CTRL_BASE
75 Return the current Boot Mode
77 This function returns the boot reason on the platform
81 ArmPlatformGetBootMode (
85 return BOOT_WITH_FULL_CONFIGURATION
;
89 Initialize controllers that must setup at the early stage
91 Some peripherals must be initialized in Secure World.
92 For example, some L2x0 requires to be initialized in Secure World
96 ArmPlatformSecInitialize (
103 Initialize controllers that must setup in the normal world
105 This function is called by the ArmPlatformPkg/Pei or ArmPlatformPkg/Pei/PlatformPeim
110 ArmPlatformNormalInitialize (
114 // Configure periodic timer (TIMER0) for 1MHz operation
115 MmioOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, SP810_SYS_CTRL_TIMER0_TIMCLK
);
116 // Configure 1MHz clock
117 MmioOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, SP810_SYS_CTRL_TIMER1_TIMCLK
);
118 // configure SP810 to use 1MHz clock and disable
119 MmioAndThenOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, ~SP810_SYS_CTRL_TIMER2_EN
, SP810_SYS_CTRL_TIMER2_TIMCLK
);
120 // Configure SP810 to use 1MHz clock and disable
121 MmioAndThenOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, ~SP810_SYS_CTRL_TIMER3_EN
, SP810_SYS_CTRL_TIMER3_TIMCLK
);
125 Initialize the system (or sometimes called permanent) memory
127 This memory is generally represented by the DRAM.
131 ArmPlatformInitializeSystemMemory (
135 // We do not need to initialize the System Memory on RTSM