mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-04-19 21:11:57 -04:00
938ec0f7bf
* Rename Arm_AARCH64 to ARM_AARCH64 * Rename Arm_AARCH64_SRE to ARM_AARCH64_SRE * Update cmake for ARM port folder capitalization * Update in portable/CmakeLists.txt * Use capitalization name in port README.md --------- Co-authored-by: Ching-Hsin Lee <chinglee@amazon.com>
24 lines
995 B
Markdown
24 lines
995 B
Markdown
# Armv8-A architecture support
|
|
|
|
The Armv8-A architecture introduces the ability to use 64-bit and 32-bit
|
|
Execution states, known as AArch64 and AArch32 respectively. The AArch64
|
|
Execution state supports the A64 instruction set. It holds addresses in 64-bit
|
|
registers and allows instructions in the base instruction set to use 64-bit
|
|
registers for their processing.
|
|
|
|
The AArch32 Execution state is a 32-bit Execution state that preserves
|
|
backwards compatibility with the Armv7-A architecture, enhancing that profile
|
|
so that it can support some features included in the AArch64 state. It supports
|
|
the T32 and A32 instruction sets. Follow the
|
|
[link](https://developer.arm.com/Architectures/A-Profile%20Architecture)
|
|
for more information.
|
|
|
|
## ARM_AARCH64 port
|
|
|
|
This port adds support for Armv8-A architecture AArch64 execution state.
|
|
This port is generic and can be used as a starting point for Armv8-A
|
|
application processors.
|
|
|
|
* ARM_AARCH64
|
|
* Memory mapped interace to access Arm GIC registers
|