1 files changed, 93 insertions, 0 deletions
diff --git a/roms/edk2/ArmPkg/Library/ArmLib/Arm/ArmV7ArchTimerSupport.asm b/roms/edk2/ArmPkg/Library/ArmLib/Arm/ArmV7ArchTimerSupport.asm
new file mode 100644
index 000000000..6896c1be2
--- /dev/null
+++ b/roms/edk2/ArmPkg/Library/ArmLib/Arm/ArmV7ArchTimerSupport.asm
@@ -0,0 +1,93 @@
+//------------------------------------------------------------------------------
+//
+// Copyright (c) 2011, ARM Limited. All rights reserved.
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+//------------------------------------------------------------------------------
+
+
+    INCLUDE AsmMacroExport.inc
+    PRESERVE8
+
+ RVCT_ASM_EXPORT ArmReadCntFrq
+  mrc    p15, 0, r0, c14, c0, 0    ; Read CNTFRQ
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmWriteCntFrq
+  mcr    p15, 0, r0, c14, c0, 0    ; Write to CNTFRQ
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntPct
+  mrrc   p15, 0, r0, r1, c14       ; Read CNTPT (Physical counter register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntkCtl
+  mrc    p15, 0, r0, c14, c1, 0    ; Read CNTK_CTL (Timer PL1 Control Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmWriteCntkCtl
+  mcr    p15, 0, r0, c14, c1, 0    ; Write to CNTK_CTL (Timer PL1 Control Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntpTval
+  mrc    p15, 0, r0, c14, c2, 0    ; Read CNTP_TVAL (PL1 physical timer value register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmWriteCntpTval
+  mcr    p15, 0, r0, c14, c2, 0    ; Write to CNTP_TVAL (PL1 physical timer value register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntpCtl
+  mrc    p15, 0, r0, c14, c2, 1    ; Read CNTP_CTL (PL1 Physical Timer Control Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmWriteCntpCtl
+  mcr    p15, 0, r0, c14, c2, 1    ; Write to  CNTP_CTL (PL1 Physical Timer Control Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntvTval
+  mrc    p15, 0, r0, c14, c3, 0    ; Read CNTV_TVAL (Virtual Timer Value register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmWriteCntvTval
+  mcr    p15, 0, r0, c14, c3, 0    ; Write to CNTV_TVAL (Virtual Timer Value register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntvCtl
+  mrc    p15, 0, r0, c14, c3, 1    ; Read CNTV_CTL (Virtual Timer Control Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmWriteCntvCtl
+  mcr    p15, 0, r0, c14, c3, 1    ; Write to CNTV_CTL (Virtual Timer Control Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntvCt
+  mrrc   p15, 1, r0, r1, c14       ; Read CNTVCT  (Virtual Count Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntpCval
+  mrrc   p15, 2, r0, r1, c14       ; Read CNTP_CTVAL (Physical Timer Compare Value Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmWriteCntpCval
+  mcrr   p15, 2, r0, r1, c14       ; Write to CNTP_CTVAL (Physical Timer Compare Value Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntvCval
+  mrrc   p15, 3, r0, r1, c14       ; Read CNTV_CTVAL (Virtual Timer Compare Value Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmWriteCntvCval
+  mcrr   p15, 3, r0, r1, c14       ; write to  CNTV_CTVAL (Virtual Timer Compare Value Register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmReadCntvOff
+  mrrc   p15, 4, r0, r1, c14       ; Read CNTVOFF (virtual Offset register)
+  bx     lr
+
+ RVCT_ASM_EXPORT ArmWriteCntvOff
+  mcrr   p15, 4, r0, r1, c14       ; Write to CNTVOFF (Virtual Offset register)
+  bx     lr
+
+ END