diff options
| author |   Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
|---|---|---|
| committer | Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com> | 2023-10-10 14:33:42 +0000 |
| commit | af1a266670d040d2f4083ff309d732d648afba2a (patch) | |
| tree | 2fc46203448ddcc6f81546d379abfaeb323575e9 /roms/edk2/MdePkg/Library/BaseCpuLib/Arm/CpuSleep.S | |
| parent | e02cda008591317b1625707ff8e115a4841aa889 (diff) | |
Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
Diffstat (limited to 'roms/edk2/MdePkg/Library/BaseCpuLib/Arm/CpuSleep.S')
| -rw-r--r-- | roms/edk2/MdePkg/Library/BaseCpuLib/Arm/CpuSleep.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseCpuLib/Arm/CpuSleep.S b/roms/edk2/MdePkg/Library/BaseCpuLib/Arm/CpuSleep.S new file mode 100644 index 000000000..e2b734900 --- /dev/null +++ b/roms/edk2/MdePkg/Library/BaseCpuLib/Arm/CpuSleep.S @@ -0,0 +1,37 @@ +#------------------------------------------------------------------------------
+#
+# CpuSleep() for ARMv7
+#
+# ARMv6 versions was:
+# MOV r0,#0
+# MCR p15,0,r0,c7,c0,4 ;Wait for Interrupt instruction
+#
+# But this is a no-op on ARMv7
+#
+# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
+# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#------------------------------------------------------------------------------
+
+.text
+.p2align 2
+GCC_ASM_EXPORT(CpuSleep)
+
+#/**
+# Places the CPU in a sleep state until an interrupt is received.
+#
+# Places the CPU in a sleep state until an interrupt is received. If interrupts
+# are disabled prior to calling this function, then the CPU will be placed in a
+# sleep state indefinitely.
+#
+#**/
+#VOID
+#EFIAPI
+#CpuSleep (
+# VOID
+# );
+#
+ASM_PFX(CpuSleep):
+ wfi
+ bx lr
|