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/** @file
*
* Copyright (c) 2011-2013, ARM Limited. All rights reserved.
*
* This program and the accompanying materials
* are licensed and made available under the terms and conditions of the BSD License
* which accompanies this distribution. The full text of the license may be found at
* http://opensource.org/licenses/bsd-license.php
*
* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
*
**/
#include <Library/IoLib.h>
#include <Library/ArmGicLib.h>
#include <Library/ArmPlatformLib.h>
#include <Library/DebugLib.h>
#include <Library/PcdLib.h>
#include <Drivers/PL310L2Cache.h>
#include <Drivers/SP804Timer.h>
#include <ArmPlatform.h>
// Initialize GICv3 to expose it as a GICv2 as UEFI does not support GICv3 yet
VOID
InitializeGicV3 (
VOID
);
/**
Initialize the Secure peripherals and memory regions
If Trustzone is supported by your platform then this function makes the required initialization
of the secure peripherals and memory regions.
**/
VOID
ArmPlatformSecTrustzoneInit (
IN UINTN MpId
)
{
// No TZPC or TZASC on RTSM to initialize
}
/**
Initialize controllers that must setup at the early stage
Some peripherals must be initialized in Secure World.
For example, some L2x0 requires to be initialized in Secure World
**/
RETURN_STATUS
ArmPlatformSecInitialize (
IN UINTN MpId
)
{
UINT32 Identification;
// If it is not the primary core then there is nothing to do
if (!ArmPlatformIsPrimaryCore (MpId)) {
return RETURN_SUCCESS;
}
// Configure periodic timer (TIMER0) for 1MHz operation
MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER0_TIMCLK);
// Configure 1MHz clock
MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER1_TIMCLK);
// Configure SP810 to use 1MHz clock and disable
MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER2_EN, SP810_SYS_CTRL_TIMER2_TIMCLK);
// Configure SP810 to use 1MHz clock and disable
MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER3_EN, SP810_SYS_CTRL_TIMER3_TIMCLK);
// Read the GIC Identification Register
Identification = MmioRead32 (PcdGet32(PcdGicInterruptInterfaceBase) + ARM_GIC_ICCIDR);
// Check if we are GICv3
if (ARM_GIC_ICCIDR_GET_ARCH_VERSION(Identification) >= 0x3) {
InitializeGicV3 ();
}
return RETURN_SUCCESS;
}
/**
Call before jumping to Normal World
This function allows the firmware platform to do extra actions before
jumping to the Normal World
**/
VOID
ArmPlatformSecExtraAction (
IN UINTN MpId,
OUT UINTN* JumpAddress
)
{
*JumpAddress = PcdGet32(PcdFvBaseAddress);
}
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