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 Remap the memory at 0x0
48 Some platform requires or gives the ability to remap the memory at the address 0x0.
49 This function can do nothing if this feature is not relevant to your platform.
53 ArmPlatformBootRemapping (
57 // Disable memory remapping and return to normal mapping
58 MmioOr32 (ARM_EB_SYSCTRL
, BIT8
); //EB_SP810_CTRL_BASE
62 Return the current Boot Mode
64 This function returns the boot reason on the platform
68 ArmPlatformGetBootMode (
72 return BOOT_WITH_FULL_CONFIGURATION
;
76 Initialize controllers that must setup in the normal world
78 This function is called by the ArmPlatformPkg/PrePi or ArmPlatformPkg/PlatformPei
83 ArmPlatformNormalInitialize (
87 // Configure periodic timer (TIMER0) for 1MHz operation
88 MmioOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, SP810_SYS_CTRL_TIMER0_TIMCLK
);
89 // Configure 1MHz clock
90 MmioOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, SP810_SYS_CTRL_TIMER1_TIMCLK
);
91 // configure SP810 to use 1MHz clock and disable
92 MmioAndThenOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, ~SP810_SYS_CTRL_TIMER2_EN
, SP810_SYS_CTRL_TIMER2_TIMCLK
);
93 // Configure SP810 to use 1MHz clock and disable
94 MmioAndThenOr32 (SP810_CTRL_BASE
+ SP810_SYS_CTRL_REG
, ~SP810_SYS_CTRL_TIMER3_EN
, SP810_SYS_CTRL_TIMER3_TIMCLK
);
98 Initialize the system (or sometimes called permanent) memory
100 This memory is generally represented by the DRAM.
104 ArmPlatformInitializeSystemMemory (
108 // We do not need to initialize the System Memory on RTSM