mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-27 16:58:09 +01:00
143 lines
3.7 KiB
ArmAsm
143 lines
3.7 KiB
ArmAsm
#
|
|
# Copyright (c) 2014-2018, Linaro Limited. All rights reserved.
|
|
#
|
|
# SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
#
|
|
#
|
|
|
|
.text
|
|
.align 3
|
|
|
|
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 w0, [x0]
|
|
dmb ld
|
|
ret
|
|
|
|
//
|
|
// 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 w1, [x0]
|
|
ret
|
|
|
|
//
|
|
// 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 w0, [x0]
|
|
dmb ld
|
|
ret
|
|
|
|
//
|
|
// 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 w1, [x0]
|
|
ret
|
|
|
|
//
|
|
// 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 w0, [x0]
|
|
dmb ld
|
|
ret
|
|
|
|
//
|
|
// 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 w1, [x0]
|
|
ret
|
|
|
|
//
|
|
// 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 x0, [x0]
|
|
dmb ld
|
|
ret
|
|
|
|
//
|
|
// 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 x1, [x0]
|
|
ret
|