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