ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbLibRTSM/ArmRealViewEb.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/ArmLib.h>
  17 #include <Library/ArmPlatformLib.h>
  18 #include <Library/DebugLib.h>
  19 #include <Library/PcdLib.h>
  20
  21 #include <Drivers/PL341Dmc.h>
  22 #include <Drivers/SP804Timer.h>
  23
  24 #include <Ppi/ArmMpCoreInfo.h>
  25
  26 #include <ArmPlatform.h>
  27
  28 ARM_CORE_INFO mRealViewEbMpCoreInfoTable[] = {
  29   {
  30     // Cluster 0, Core 0
  31     0x0, 0x0,
  32
  33     // MP Core MailBox Set/Get/Clear Addresses and Clear Value
  34     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_REG,
  35     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_SET_REG,
  36     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_CLR_REG,
  37     (UINT64)0xFFFFFFFF
  38   },
  39   {
  40     // Cluster 0, Core 1
  41     0x0, 0x1,
  42
  43     // MP Core MailBox Set/Get/Clear Addresses and Clear Value
  44     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_REG,
  45     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_SET_REG,
  46     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_CLR_REG,
  47     (UINT64)0xFFFFFFFF
  48   }
  49 };
  50
  51 /**
  52   Return the current Boot Mode
  53
  54   This function returns the boot reason on the platform
  55
  56 **/
  57 EFI_BOOT_MODE
  58 ArmPlatformGetBootMode (
  59   VOID
  60   )
  61 {
  62   return BOOT_WITH_FULL_CONFIGURATION;
  63 }
  64
  65 /**
  66   Initialize controllers that must setup in the normal world
  67
  68   This function is called by the ArmPlatformPkg/PrePi or ArmPlatformPkg/PlatformPei
  69   in the PEI phase.
  70
  71 **/
  72 RETURN_STATUS
  73 ArmPlatformInitialize (
  74   IN  UINTN                     MpId
  75   )
  76 {
  77   if (!ArmPlatformIsPrimaryCore (MpId)) {
  78     return RETURN_SUCCESS;
  79   }
  80
  81   // Disable memory remapping and return to normal mapping
  82   MmioOr32 (ARM_EB_SYSCTRL, BIT8); //EB_SP810_CTRL_BASE
  83
  84   // Configure periodic timer (TIMER0) for 1MHz operation
  85   MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER0_TIMCLK);
  86   // Configure 1MHz clock
  87   MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER1_TIMCLK);
  88   // configure SP810 to use 1MHz clock and disable
  89   MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER2_EN, SP810_SYS_CTRL_TIMER2_TIMCLK);
  90   // Configure SP810 to use 1MHz clock and disable
  91   MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER3_EN, SP810_SYS_CTRL_TIMER3_TIMCLK);
  92
  93   return RETURN_SUCCESS;
  94 }
  95
  96 /**
  97   Initialize the system (or sometimes called permanent) memory
  98
  99   This memory is generally represented by the DRAM.
 100
 101 **/
 102 VOID
 103 ArmPlatformInitializeSystemMemory (
 104   VOID
 105   )
 106 {
 107   // We do not need to initialize the System Memory on RTSM
 108 }
 109
 110 EFI_STATUS
 111 PrePeiCoreGetMpCoreInfo (
 112   OUT UINTN                   *CoreCount,
 113   OUT ARM_CORE_INFO           **ArmCoreTable
 114   )
 115 {
 116   if ((MmioRead32 (ARM_EB_SYS_PROCID0_REG) & ARM_EB_SYS_PROC_ID_MASK) == ARM_EB_SYS_PROC_ID_CORTEX_A9) {
 117     *CoreCount    = sizeof(mRealViewEbMpCoreInfoTable) / sizeof(ARM_CORE_INFO);
 118     *ArmCoreTable = mRealViewEbMpCoreInfoTable;
 119     return EFI_SUCCESS;
 120   } else {
 121     return EFI_UNSUPPORTED;
 122   }
 123 }
 124
 125 // Needs to be declared in the file. Otherwise gArmMpCoreInfoPpiGuid is undefined in the contect of PrePeiCore
 126 EFI_GUID mArmMpCoreInfoPpiGuid = ARM_MP_CORE_INFO_PPI_GUID;
 127 ARM_MP_CORE_INFO_PPI mMpCoreInfoPpi = { PrePeiCoreGetMpCoreInfo };
 128
 129 EFI_PEI_PPI_DESCRIPTOR      gPlatformPpiTable[] = {
 130   {
 131     EFI_PEI_PPI_DESCRIPTOR_PPI,
 132     &mArmMpCoreInfoPpiGuid,
 133     &mMpCoreInfoPpi
 134   }
 135 };
 136
 137 VOID
 138 ArmPlatformGetPlatformPpiList (
 139   OUT UINTN                   *PpiListSize,
 140   OUT EFI_PEI_PPI_DESCRIPTOR  **PpiList
 141   )
 142 {
 143   *PpiListSize = sizeof(gPlatformPpiTable);
 144   *PpiList = gPlatformPpiTable;
 145 }
 146