ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSMSec.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011-2012, 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
  20 #include <Drivers/PL310L2Cache.h>
  21 #include <Drivers/SP804Timer.h>
  22
  23 #include <ArmPlatform.h>
  24
  25 /**
  26   Initialize the Secure peripherals and memory regions
  27
  28   If Trustzone is supported by your platform then this function makes the required initialization
  29   of the secure peripherals and memory regions.
  30
  31 **/
  32 VOID
  33 ArmPlatformTrustzoneInit (
  34   IN  UINTN                     MpId
  35   )
  36 {
  37   // No TZPC or TZASC on RTSM to initialize
  38 }
  39
  40 /**
  41   Initialize controllers that must setup at the early stage
  42
  43   Some peripherals must be initialized in Secure World.
  44   For example, some L2x0 requires to be initialized in Secure World
  45
  46 **/
  47 VOID
  48 ArmPlatformSecInitialize (
  49   VOID
  50   )
  51 {
  52   // Configure periodic timer (TIMER0) for 1MHz operation
  53   MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER0_TIMCLK);
  54   // Configure 1MHz clock
  55   MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER1_TIMCLK);
  56   // Configure SP810 to use 1MHz clock and disable
  57   MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER2_EN, SP810_SYS_CTRL_TIMER2_TIMCLK);
  58   // Configure SP810 to use 1MHz clock and disable
  59   MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER3_EN, SP810_SYS_CTRL_TIMER3_TIMCLK);
  60 }
  61
  62 /**
  63   Call before jumping to Normal World
  64
  65   This function allows the firmware platform to do extra actions before
  66   jumping to the Normal World
  67
  68 **/
  69 VOID
  70 ArmPlatformSecExtraAction (
  71   IN  UINTN         MpId,
  72   OUT UINTN*        JumpAddress
  73   )
  74 {
  75   *JumpAddress = PcdGet32(PcdFvBaseAddress);
  76 }