ArmPlatformPkg/ArmRealViewEbPkg/Library/ArmRealViewEbLibRTSM/ArmRealViewEb.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/PL341Dmc.h>
  21 #include <Drivers/SP804Timer.h>
  22
  23 #include <Ppi/ArmMpCoreInfo.h>
  24
  25 #include <ArmPlatform.h>
  26
  27 ARM_CORE_INFO mRealViewEbMpCoreInfoTable[] = {
  28   {
  29     // Cluster 0, Core 0
  30     0x0, 0x0,
  31
  32     // MP Core MailBox Set/Get/Clear Addresses and Clear Value
  33     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_REG,
  34     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_SET_REG,
  35     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_CLR_REG,
  36     (UINT64)0xFFFFFFFF
  37   },
  38   {
  39     // Cluster 0, Core 1
  40     0x0, 0x1,
  41
  42     // MP Core MailBox Set/Get/Clear Addresses and Clear Value
  43     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_REG,
  44     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_SET_REG,
  45     (EFI_PHYSICAL_ADDRESS)ARM_EB_SYS_FLAGS_CLR_REG,
  46     (UINT64)0xFFFFFFFF
  47   }
  48 };
  49
  50 /**
  51   Remap the memory at 0x0
  52
  53   Some platform requires or gives the ability to remap the memory at the address 0x0.
  54   This function can do nothing if this feature is not relevant to your platform.
  55
  56 **/
  57 VOID
  58 ArmPlatformBootRemapping (
  59   VOID
  60   )
  61 {
  62   // Disable memory remapping and return to normal mapping
  63   MmioOr32 (ARM_EB_SYSCTRL, BIT8); //EB_SP810_CTRL_BASE
  64 }
  65
  66 /**
  67   Return the current Boot Mode
  68
  69   This function returns the boot reason on the platform
  70
  71 **/
  72 EFI_BOOT_MODE
  73 ArmPlatformGetBootMode (
  74   VOID
  75   )
  76 {
  77   return BOOT_WITH_FULL_CONFIGURATION;
  78 }
  79
  80 /**
  81   Initialize controllers that must setup in the normal world
  82
  83   This function is called by the ArmPlatformPkg/PrePi or ArmPlatformPkg/PlatformPei
  84   in the PEI phase.
  85
  86 **/
  87 VOID
  88 ArmPlatformNormalInitialize (
  89   VOID
  90   )
  91 {
  92   // Configure periodic timer (TIMER0) for 1MHz operation
  93   MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER0_TIMCLK);
  94   // Configure 1MHz clock
  95   MmioOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, SP810_SYS_CTRL_TIMER1_TIMCLK);
  96   // configure SP810 to use 1MHz clock and disable
  97   MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER2_EN, SP810_SYS_CTRL_TIMER2_TIMCLK);
  98   // Configure SP810 to use 1MHz clock and disable
  99   MmioAndThenOr32 (SP810_CTRL_BASE + SP810_SYS_CTRL_REG, ~SP810_SYS_CTRL_TIMER3_EN, SP810_SYS_CTRL_TIMER3_TIMCLK);
 100 }
 101
 102 /**
 103   Initialize the system (or sometimes called permanent) memory
 104
 105   This memory is generally represented by the DRAM.
 106
 107 **/
 108 VOID
 109 ArmPlatformInitializeSystemMemory (
 110   VOID
 111   )
 112 {
 113   // We do not need to initialize the System Memory on RTSM
 114 }
 115
 116 EFI_STATUS
 117 PrePeiCoreGetMpCoreInfo (
 118   OUT UINTN                   *CoreCount,
 119   OUT ARM_CORE_INFO           **ArmCoreTable
 120   )
 121 {
 122   if ((MmioRead32 (ARM_EB_SYS_PROCID0_REG) & ARM_EB_SYS_PROC_ID_MASK) == ARM_EB_SYS_PROC_ID_CORTEX_A9) {
 123     *CoreCount    = sizeof(mRealViewEbMpCoreInfoTable) / sizeof(ARM_CORE_INFO);
 124     *ArmCoreTable = mRealViewEbMpCoreInfoTable;
 125     return EFI_SUCCESS;
 126   } else {
 127     return EFI_UNSUPPORTED;
 128   }
 129 }
 130
 131 // Needs to be declared in the file. Otherwise gArmMpCoreInfoPpiGuid is undefined in the contect of PrePeiCore
 132 EFI_GUID mArmMpCoreInfoPpiGuid = ARM_MP_CORE_INFO_PPI_GUID;
 133 ARM_MP_CORE_INFO_PPI mMpCoreInfoPpi = { PrePeiCoreGetMpCoreInfo };
 134
 135 EFI_PEI_PPI_DESCRIPTOR      gPlatformPpiTable[] = {
 136   {
 137     EFI_PEI_PPI_DESCRIPTOR_PPI,
 138     &mArmMpCoreInfoPpiGuid,
 139     &mMpCoreInfoPpi
 140   }
 141 };
 142
 143 VOID
 144 ArmPlatformGetPlatformPpiList (
 145   OUT UINTN                   *PpiListSize,
 146   OUT EFI_PEI_PPI_DESCRIPTOR  **PpiList
 147   )
 148 {
 149   *PpiListSize = sizeof(gPlatformPpiTable);
 150   *PpiList = gPlatformPpiTable;
 151 }
 152