ArmPkg/Drivers/ArmGic/GicV3/AArch64/ArmGicV3.S

   1 #
   2 #  Copyright (c) 2014, ARM Limited. All rights reserved.
   3 #
   4 #  SPDX-License-Identifier: BSD-2-Clause-Patent
   5 #
   6 #
   7
   8 #include <AsmMacroIoLibV8.h>
   9
  10 #if !defined(__clang__)
  11
  12 //
  13 // Clang versions before v3.6 do not support the GNU extension that allows
  14 // system registers outside of the IMPLEMENTATION DEFINED range to be specified
  15 // using the generic notation below. However, clang knows these registers by
  16 // their architectural names, so it has no need for these aliases anyway.
  17 //
  18 #define ICC_SRE_EL1             S3_0_C12_C12_5
  19 #define ICC_SRE_EL2             S3_4_C12_C9_5
  20 #define ICC_SRE_EL3             S3_6_C12_C12_5
  21 #define ICC_IGRPEN1_EL1         S3_0_C12_C12_7
  22 #define ICC_EOIR1_EL1           S3_0_C12_C12_1
  23 #define ICC_IAR1_EL1            S3_0_C12_C12_0
  24 #define ICC_PMR_EL1             S3_0_C4_C6_0
  25 #define ICC_BPR1_EL1            S3_0_C12_C12_3
  26
  27 #endif
  28
  29 //UINT32
  30 //EFIAPI
  31 //ArmGicV3GetControlSystemRegisterEnable (
  32 //  VOID
  33 //  );
  34 ASM_FUNC(ArmGicV3GetControlSystemRegisterEnable)
  35         EL1_OR_EL2_OR_EL3(x1)
  36 1:  mrs x0, ICC_SRE_EL1
  37         b       4f
  38 2:  mrs x0, ICC_SRE_EL2
  39         b       4f
  40 3:  mrs x0, ICC_SRE_EL3
  41 4:  ret
  42
  43 //VOID
  44 //EFIAPI
  45 //ArmGicV3SetControlSystemRegisterEnable (
  46 //  IN UINT32         ControlSystemRegisterEnable
  47 //  );
  48 ASM_FUNC(ArmGicV3SetControlSystemRegisterEnable)
  49         EL1_OR_EL2_OR_EL3(x1)
  50 1:  msr ICC_SRE_EL1, x0
  51         b       4f
  52 2:  msr ICC_SRE_EL2, x0
  53         b       4f
  54 3:  msr ICC_SRE_EL3, x0
  55 4:  isb
  56         ret
  57
  58 //VOID
  59 //ArmGicV3EnableInterruptInterface (
  60 //  VOID
  61 //  );
  62 ASM_FUNC(ArmGicV3EnableInterruptInterface)
  63         mov     x0, #1
  64         msr     ICC_IGRPEN1_EL1, x0
  65         ret
  66
  67 //VOID
  68 //ArmGicV3DisableInterruptInterface (
  69 //  VOID
  70 //  );
  71 ASM_FUNC(ArmGicV3DisableInterruptInterface)
  72         mov     x0, #0
  73         msr     ICC_IGRPEN1_EL1, x0
  74         ret
  75
  76 //VOID
  77 //ArmGicV3EndOfInterrupt (
  78 //  IN UINTN          InterruptId
  79 //  );
  80 ASM_FUNC(ArmGicV3EndOfInterrupt)
  81         msr     ICC_EOIR1_EL1, x0
  82         ret
  83
  84 //UINTN
  85 //ArmGicV3AcknowledgeInterrupt (
  86 //  VOID
  87 //  );
  88 ASM_FUNC(ArmGicV3AcknowledgeInterrupt)
  89         mrs     x0, ICC_IAR1_EL1
  90         ret
  91
  92 //VOID
  93 //ArmGicV3SetPriorityMask (
  94 //  IN UINTN          Priority
  95 //  );
  96 ASM_FUNC(ArmGicV3SetPriorityMask)
  97         msr     ICC_PMR_EL1, x0
  98         ret
  99
 100 //VOID
 101 //ArmGicV3SetBinaryPointer (
 102 //  IN UINTN          BinaryPoint
 103 //  );
 104 ASM_FUNC(ArmGicV3SetBinaryPointer)
 105         msr     ICC_BPR1_EL1, x0
 106         ret