When we merge diff branch in local workspace and pull branch from
    remote workspace. There are some conflict we must to process.

signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    Add all subsystem files and qemu related file for zvm system.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    Due to the limitations of Zephyr itself, the Linux we support is limited and cannot support all features. Therefore, we provide a sample that we support.
    You can use these configurations to build an available Linux VM.
signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    This example is based on Zephyr's basic shell and adds multiple serial port support to expand visualization operations.

signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    Added support for fixed board cards with ZVM, including specific support for static memory configuration of virtual machines, virtual device configuration, etc.

signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    We add below code:
- os*: os related code, like zephyr and linux.
- elfloader: add zephyr os's elf boot support.
- latency_measure: add latency measurement.
- vm*: include vcpu, vmem, virq, vm manager and other virtual module
that not relay on special hardware.

signed-of-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    Add a virtual dev module for user to  add different vdev. For
    example, using a list to support uart.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    We add support for fvp_cortex_a55x4_a75x2_smp boards.

signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    When booting multiple cpus, the cpu's affinities in different soc is
    different, So we add this for booting new fvp board.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

When adding subsystem to origin zephyr project, we should add some
kconfig options for user.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    A vcpu thread need to schedule in zephyr scheduling system. So, we
    add some function for vcpu schedule.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    Add thread flag for marking vcpu, which will be used for vcpu
    context switch. If the thread is not a vcpu, no context switch need
    to process.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

 The zvm system need to support hypervisor and VHE mode, which require
 some register definition that not exist in zephyr2.7.3. So we add these
 info for zvm.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

- gicv3: add some gicv3 macro
- gicv3_priv: add some gicv3 macro
- head file(gic.h, arm-gic.h): add gicv3 related header data struct

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

-Kconfig: configure zvm subsystem
-exc: hvc support
-kernel headfile: add arm64 context
-offset: add Arm64 context offset

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

-fpu code for supporting fpu
-isr code for vcpu switch
-mmu code for vhe mode's mm translation
-offset code for locating context on platform
-prep code for debugging uart and init vcpu flag
-reset code for hardware feature initial
-smp code for supporting smp init for zvm
-switch code for hvc support when thread switch
-thread code for thread context init for zvm

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

This commit updates the copyright notice in source files from
“Copyright (c) 2022 xcl <xiongcl@hnu.cn>” to “Copyright 2021-2022 HNU”.
This change is made to keep up with the current year and properly
attribute the institution. Additionally, this commit adds copyright
notice for the configuration files, which were previously missing.

Signed-off-by: Jianchun Luo <jianchun.luo@qq.com>

1. Add Linux Image boot support on ARM FVP.
2. Ramfs is embeded in linux kernel Image.
3. Add bootarge and change dtb info for boot linux kernel without other
support softwware.
Signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

To comply with Zephyr's document standards, all documents use the format of rst. The content has not been modified.

Signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

* This includes the initial code changes about ZVM.
* codes need to be refactored to meet the requirements

Signed-off-by: Wayne Ren <renwei41@huawei.com>

use commit id 8660457ec2 as baseline

Signed-off-by: Wayne Ren <renwei41@huawei.com>