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-rw-r--r--roms/edk2/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S141
-rw-r--r--roms/edk2/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm145
2 files changed, 286 insertions, 0 deletions
diff --git a/roms/edk2/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S b/roms/edk2/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S
new file mode 100644
index 000000000..f82325769
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.S
@@ -0,0 +1,141 @@
+#
+# Copyright (c) 2014-2018, Linaro Limited. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#
+
+GCC_ASM_EXPORT(MmioRead8Internal)
+GCC_ASM_EXPORT(MmioWrite8Internal)
+GCC_ASM_EXPORT(MmioRead16Internal)
+GCC_ASM_EXPORT(MmioWrite16Internal)
+GCC_ASM_EXPORT(MmioRead32Internal)
+GCC_ASM_EXPORT(MmioWrite32Internal)
+GCC_ASM_EXPORT(MmioRead64Internal)
+GCC_ASM_EXPORT(MmioWrite64Internal)
+
+//
+// Reads an 8-bit MMIO register.
+//
+// Reads the 8-bit MMIO register specified by Address. The 8-bit read value is
+// returned. This function must guarantee that all MMIO read and write
+// operations are serialized.
+//
+// @param Address The MMIO register to read.
+//
+// @return The value read.
+//
+ASM_PFX(MmioRead8Internal):
+ ldrb r0, [r0]
+ dmb
+ bx lr
+
+//
+// Writes an 8-bit MMIO register.
+//
+// Writes the 8-bit MMIO register specified by Address with the value specified
+// by Value and returns Value. This function must guarantee that all MMIO read
+// and write operations are serialized.
+//
+// @param Address The MMIO register to write.
+// @param Value The value to write to the MMIO register.
+//
+ASM_PFX(MmioWrite8Internal):
+ dmb st
+ strb r1, [r0]
+ bx lr
+
+//
+// Reads a 16-bit MMIO register.
+//
+// Reads the 16-bit MMIO register specified by Address. The 16-bit read value is
+// returned. This function must guarantee that all MMIO read and write
+// operations are serialized.
+//
+// @param Address The MMIO register to read.
+//
+// @return The value read.
+//
+ASM_PFX(MmioRead16Internal):
+ ldrh r0, [r0]
+ dmb
+ bx lr
+
+//
+// Writes a 16-bit MMIO register.
+//
+// Writes the 16-bit MMIO register specified by Address with the value specified
+// by Value and returns Value. This function must guarantee that all MMIO read
+// and write operations are serialized.
+//
+// @param Address The MMIO register to write.
+// @param Value The value to write to the MMIO register.
+//
+ASM_PFX(MmioWrite16Internal):
+ dmb st
+ strh r1, [r0]
+ bx lr
+
+//
+// Reads a 32-bit MMIO register.
+//
+// Reads the 32-bit MMIO register specified by Address. The 32-bit read value is
+// returned. This function must guarantee that all MMIO read and write
+// operations are serialized.
+//
+// @param Address The MMIO register to read.
+//
+// @return The value read.
+//
+ASM_PFX(MmioRead32Internal):
+ ldr r0, [r0]
+ dmb
+ bx lr
+
+//
+// Writes a 32-bit MMIO register.
+//
+// Writes the 32-bit MMIO register specified by Address with the value specified
+// by Value and returns Value. This function must guarantee that all MMIO read
+// and write operations are serialized.
+//
+// @param Address The MMIO register to write.
+// @param Value The value to write to the MMIO register.
+//
+ASM_PFX(MmioWrite32Internal):
+ dmb st
+ str r1, [r0]
+ bx lr
+
+//
+// Reads a 64-bit MMIO register.
+//
+// Reads the 64-bit MMIO register specified by Address. The 64-bit read value is
+// returned. This function must guarantee that all MMIO read and write
+// operations are serialized.
+//
+// @param Address The MMIO register to read.
+//
+// @return The value read.
+//
+ASM_PFX(MmioRead64Internal):
+ ldr r1, [r0, #4]
+ ldr r0, [r0]
+ dmb
+ bx lr
+
+//
+// Writes a 64-bit MMIO register.
+//
+// Writes the 64-bit MMIO register specified by Address with the value specified
+// by Value and returns Value. This function must guarantee that all MMIO read
+// and write operations are serialized.
+//
+// @param Address The MMIO register to write.
+// @param Value The value to write to the MMIO register.
+//
+ASM_PFX(MmioWrite64Internal):
+ dmb st
+ str r2, [r0]
+ str r3, [r0, #4]
+ bx lr
diff --git a/roms/edk2/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm b/roms/edk2/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm
new file mode 100644
index 000000000..5a423df16
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseIoLibIntrinsic/Arm/ArmVirtMmio.asm
@@ -0,0 +1,145 @@
+;
+; Copyright (c) 2014-2018, Linaro Limited. All rights reserved.
+;
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+
+
+AREA IoLibMmio, CODE, READONLY
+
+EXPORT MmioRead8Internal
+EXPORT MmioWrite8Internal
+EXPORT MmioRead16Internal
+EXPORT MmioWrite16Internal
+EXPORT MmioRead32Internal
+EXPORT MmioWrite32Internal
+EXPORT MmioRead64Internal
+EXPORT MmioWrite64Internal
+
+;
+; Reads an 8-bit MMIO register.
+;
+; Reads the 8-bit MMIO register specified by Address. The 8-bit read value is
+; returned. This function must guarantee that all MMIO read and write
+; operations are serialized.
+;
+; @param Address The MMIO register to read.
+;
+; @return The value read.
+;
+MmioRead8Internal
+ ldrb r0, [r0]
+ dmb
+ bx lr
+
+;
+; Writes an 8-bit MMIO register.
+;
+; Writes the 8-bit MMIO register specified by Address with the value specified
+; by Value and returns Value. This function must guarantee that all MMIO read
+; and write operations are serialized.
+;
+; @param Address The MMIO register to write.
+; @param Value The value to write to the MMIO register.
+;
+MmioWrite8Internal
+ dmb st
+ strb r1, [r0]
+ bx lr
+
+;
+; Reads a 16-bit MMIO register.
+;
+; Reads the 16-bit MMIO register specified by Address. The 16-bit read value is
+; returned. This function must guarantee that all MMIO read and write
+; operations are serialized.
+;
+; @param Address The MMIO register to read.
+;
+; @return The value read.
+;
+MmioRead16Internal
+ ldrh r0, [r0]
+ dmb
+ bx lr
+
+;
+; Writes a 16-bit MMIO register.
+;
+; Writes the 16-bit MMIO register specified by Address with the value specified
+; by Value and returns Value. This function must guarantee that all MMIO read
+; and write operations are serialized.
+;
+; @param Address The MMIO register to write.
+; @param Value The value to write to the MMIO register.
+;
+MmioWrite16Internal
+ dmb st
+ strh r1, [r0]
+ bx lr
+
+;
+; Reads a 32-bit MMIO register.
+;
+; Reads the 32-bit MMIO register specified by Address. The 32-bit read value is
+; returned. This function must guarantee that all MMIO read and write
+; operations are serialized.
+;
+; @param Address The MMIO register to read.
+;
+; @return The value read.
+;
+MmioRead32Internal
+ ldr r0, [r0]
+ dmb
+ bx lr
+
+;
+; Writes a 32-bit MMIO register.
+;
+; Writes the 32-bit MMIO register specified by Address with the value specified
+; by Value and returns Value. This function must guarantee that all MMIO read
+; and write operations are serialized.
+;
+; @param Address The MMIO register to write.
+; @param Value The value to write to the MMIO register.
+;
+MmioWrite32Internal
+ dmb st
+ str r1, [r0]
+ bx lr
+
+;
+; Reads a 64-bit MMIO register.
+;
+; Reads the 64-bit MMIO register specified by Address. The 64-bit read value is
+; returned. This function must guarantee that all MMIO read and write
+; operations are serialized.
+;
+; @param Address The MMIO register to read.
+;
+; @return The value read.
+;
+MmioRead64Internal
+ ldr r1, [r0, #4]
+ ldr r0, [r0]
+ dmb
+ bx lr
+
+;
+; Writes a 64-bit MMIO register.
+;
+; Writes the 64-bit MMIO register specified by Address with the value specified
+; by Value and returns Value. This function must guarantee that all MMIO read
+; and write operations are serialized.
+;
+; @param Address The MMIO register to write.
+; @param Value The value to write to the MMIO register.
+;
+MmioWrite64Internal
+ dmb st
+ str r2, [r0]
+ str r3, [r0, #4]
+ bx lr
+
+ END