ArmPlatformPkg/ArmVExpressPkg/Library/ArmVExpressLibRTSM/RTSM.c

   1 /** @file
   2 *
   3 *  Copyright (c) 2011, 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/SP804Timer.h>
  21
  22 #include <Ppi/ArmMpCoreInfo.h>
  23
  24 #include <ArmPlatform.h>
  25
  26 ARM_CORE_INFO mVersatileExpressMpCoreInfoTable[] = {
  27   {
  28     // Cluster 0, Core 0
  29     0x0, 0x0,
  30
  31     // MP Core MailBox Set/Get/Clear Addresses and Clear Value
  32     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_REG,
  33     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_SET_REG,
  34     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_CLR_REG,
  35     (UINT64)0xFFFFFFFF
  36   },
  37   {
  38     // Cluster 0, Core 1
  39     0x0, 0x1,
  40
  41     // MP Core MailBox Set/Get/Clear Addresses and Clear Value
  42     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_REG,
  43     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_SET_REG,
  44     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_CLR_REG,
  45     (UINT64)0xFFFFFFFF
  46   },
  47   {
  48     // Cluster 0, Core 2
  49     0x0, 0x2,
  50
  51     // MP Core MailBox Set/Get/Clear Addresses and Clear Value
  52     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_REG,
  53     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_SET_REG,
  54     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_CLR_REG,
  55     (UINT64)0xFFFFFFFF
  56   },
  57   {
  58     // Cluster 0, Core 3
  59     0x0, 0x3,
  60
  61     // MP Core MailBox Set/Get/Clear Addresses and Clear Value
  62     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_REG,
  63     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_SET_REG,
  64     (EFI_PHYSICAL_ADDRESS)ARM_VE_SYS_FLAGS_CLR_REG,
  65     (UINT64)0xFFFFFFFF
  66   }
  67 };
  68
  69 /**
  70   Return if Trustzone is supported by your platform
  71
  72   A non-zero value must be returned if you want to support a Secure World on your platform.
  73   ArmVExpressTrustzoneInit() will later set up the secure regions.
  74   This function can return 0 even if Trustzone is supported by your processor. In this case,
  75   the platform will continue to run in Secure World.
  76
  77   @return   A non-zero value if Trustzone supported.
  78
  79 **/
  80 UINTN
  81 ArmPlatformTrustzoneSupported (
  82   VOID
  83   )
  84 {
  85   // Not supported yet but model does have Secure SRAM (but no TZPC/TZASC) so we could support it
  86   return FALSE;
  87 }
  88
  89 /**
  90   Return the current Boot Mode
  91
  92   This function returns the boot reason on the platform
  93
  94   @return   Return the current Boot Mode of the platform
  95
  96 **/
  97 EFI_BOOT_MODE
  98 ArmPlatformGetBootMode (
  99   VOID
 100   )
 101 {
 102   return BOOT_WITH_FULL_CONFIGURATION;
 103 }
 104
 105 /**
 106   Remap the memory at 0x0
 107
 108   Some platform requires or gives the ability to remap the memory at the address 0x0.
 109   This function can do nothing if this feature is not relevant to your platform.
 110
 111 **/
 112 VOID
 113 ArmPlatformBootRemapping (
 114   VOID
 115   )
 116 {
 117   // Disable memory remapping and return to normal mapping
 118   MmioOr32 (SP810_CTRL_BASE, BIT8);
 119 }
 120
 121 /**
 122   Initialize controllers that must setup in the normal world
 123
 124   This function is called by the ArmPlatformPkg/Pei or ArmPlatformPkg/Pei/PlatformPeim
 125   in the PEI phase.
 126
 127 **/
 128 VOID
 129 ArmPlatformNormalInitialize (
 130   VOID
 131   )
 132 {
 133   // Nothing to do here
 134 }
 135
 136 /**
 137   Initialize the system (or sometimes called permanent) memory
 138
 139   This memory is generally represented by the DRAM.
 140
 141 **/
 142 VOID
 143 ArmPlatformInitializeSystemMemory (
 144   VOID
 145   )
 146 {
 147   // Configure periodic timer (TIMER0) for 1MHz operation
 148   MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER0_TIMCLK);
 149   // Configure 1MHz clock
 150   MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER1_TIMCLK);
 151   // configure SP810 to use 1MHz clock and disable
 152   MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER2_EN, SP810_SYS_CTRL_TIMER2_TIMCLK);
 153   // Configure SP810 to use 1MHz clock and disable
 154   MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER3_EN, SP810_SYS_CTRL_TIMER3_TIMCLK);
 155 }
 156
 157 EFI_STATUS
 158 PrePeiCoreGetMpCoreInfo (
 159   OUT UINTN                   *CoreCount,
 160   OUT ARM_CORE_INFO           **ArmCoreTable
 161   )
 162 {
 163   UINT32   ProcType;
 164
 165   ProcType = MmioRead32 (ARM_VE_SYS_PROCID0_REG) & ARM_VE_SYS_PROC_ID_MASK;
 166   if (ProcType == ARM_VE_SYS_PROC_ID_CORTEX_A9) {
 167     // Only support one cluster
 168     *CoreCount    = ArmGetCpuCountPerCluster ();
 169     *ArmCoreTable = mVersatileExpressMpCoreInfoTable;
 170     return EFI_SUCCESS;
 171   } else {
 172     return EFI_UNSUPPORTED;
 173   }
 174 }
 175
 176 // Needs to be declared in the file. Otherwise gArmMpCoreInfoPpiGuid is undefined in the contect of PrePeiCore
 177 EFI_GUID mArmMpCoreInfoPpiGuid = ARM_MP_CORE_INFO_PPI_GUID;
 178 ARM_MP_CORE_INFO_PPI mMpCoreInfoPpi = { PrePeiCoreGetMpCoreInfo };
 179
 180 EFI_PEI_PPI_DESCRIPTOR      gPlatformPpiTable[] = {
 181   {
 182     EFI_PEI_PPI_DESCRIPTOR_PPI,
 183     &mArmMpCoreInfoPpiGuid,
 184     &mMpCoreInfoPpi
 185   }
 186 };
 187
 188 VOID
 189 ArmPlatformGetPlatformPpiList (
 190   OUT UINTN                   *PpiListSize,
 191   OUT EFI_PEI_PPI_DESCRIPTOR  **PpiList
 192   )
 193 {
 194   *PpiListSize = sizeof(gPlatformPpiTable);
 195   *PpiList = gPlatformPpiTable;
 196 }