23792dea0c
The SP804 drivers must not consider the presence of the SP810 System Controller on the platform. The SP810 was used to enable the SP804 Dual Timers on ArmVExpress. It is the role of the Platform specific driver to enable to the SP804 dual timers if required. The former SP810 initialization code has moved to ArmPlatformLib for ArmRealViewEb and ArmVersatileExpress. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11744 6f19259b-4bc3-4df7-8a09-765794883524
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/** @file
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*
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* Copyright (c) 2011, 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/ArmPlatformLib.h>
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#include <Library/DebugLib.h>
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#include <Library/PcdLib.h>
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#include <Drivers/PL341Dmc.h>
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#include <Drivers/SP804Timer.h>
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/**
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Return if Trustzone is supported by your platform
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A non-zero value must be returned if you want to support a Secure World on your platform.
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ArmPlatformTrustzoneInit() will later set up the secure regions.
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This function can return 0 even if Trustzone is supported by your processor. In this case,
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the platform will continue to run in Secure World.
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@return A non-zero value if Trustzone supported.
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**/
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UINTN
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ArmPlatformTrustzoneSupported (
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VOID
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)
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{
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// There is no Trustzone controllers (TZPC & TZASC) and no Secure Memory on RTSM
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return FALSE;
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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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ArmPlatformTrustzoneInit (
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VOID
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)
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{
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ASSERT(FALSE);
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}
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/**
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Remap the memory at 0x0
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Some platform requires or gives the ability to remap the memory at the address 0x0.
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This function can do nothing if this feature is not relevant to your platform.
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**/
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VOID
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ArmPlatformBootRemapping (
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VOID
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)
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{
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// Disable memory remapping and return to normal mapping
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MmioOr32 (ARM_EB_SYSCTRL, BIT8); //EB_SP810_CTRL_BASE
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}
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/**
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Return the current Boot Mode
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This function returns the boot reason on the platform
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**/
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EFI_BOOT_MODE
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ArmPlatformGetBootMode (
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VOID
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)
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{
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return BOOT_WITH_FULL_CONFIGURATION;
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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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VOID
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ArmPlatformSecInitialize (
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VOID
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) {
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// Do nothing yet
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}
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/**
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Initialize controllers that must setup in the normal world
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This function is called by the ArmPlatformPkg/Pei or ArmPlatformPkg/Pei/PlatformPeim
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in the PEI phase.
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**/
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VOID
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ArmPlatformNormalInitialize (
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VOID
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)
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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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}
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/**
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Initialize the system (or sometimes called permanent) memory
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This memory is generally represented by the DRAM.
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**/
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VOID
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ArmPlatformInitializeSystemMemory (
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VOID
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)
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{
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// We do not need to initialize the System Memory on RTSM
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}
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