Gem5，计算机架构

如何解决Gem5，计算机架构

我正在尝试使用以下命令在 FS 模式下运行 gem5："build/ARM/gem5.opt configs/example/fs.py --disk-image=/home/coep/gem5%202/ full_system_images/aarch32-ubuntu-natty-headless.img --arm=/home/coep/gem5 2/full_system_images/vmlinux.arm.smp.fb.3.2/vmlinux.arm.smp.fb.3.2" 并得到错误：“用法：fs.py [选项] fs.py：错误：选项--arm-iset：无效选择：'/home/coep/gem5'（从'arm'、'thumb ','aarch64')" 请帮我解决这个错误。 谢谢。

解决方法

我假设 --arm=/home/coep/gem5...vmlinux.arm.smp.fb.3.2 参数指定了来宾内核的路径，在这种情况下它应该是 --kernel=...：

build/ARM/gem5.opt \
configs/example/fs.py \
--disk-image=/home/coep/gem5\ 2/full_system_images/aarch32-ubuntu-natty-headless.img \
--kernel=/home/coep/gem5\ 2/full_system_images/vmlinux.arm.smp.fb.3.2/vmlinux.arm.smp.fb.3.2

参数及其解释见configs/common/Options.py

,

出现此错误的原因可能有多种，其中之一可能是磁盘映像文件的路径不正确。

我已经在 FS 模式下运行 gem5 并在 Ubuntu 18.04 LTS 上启动了 Linux

您可以按照以下步骤操作，第一步是下载并安装完整系统的二进制文件和磁盘映像文件。

 1. $ mkdir full_system_image
 2. $ cd full_system_image/
 3. $ wget http://www.m5sim.org/dist/current/arm/aarch-system-2014-10.tar.bz2
 4. $ tar jxf aarch-system-2014-10.tar.bz2
 5. $ echo "export M5_PATH=/Path to the full_system_image directory/full_system_images/" >> ~/.bashrc
 6. $ source ~/.bashrc
 7. $ echo $M5_PATH  (- check if the path is set correct)

现在路径已经设置好了，下一步就是在FS模式下运行gem5了。

 1. connect to gem5 base directory
 2. $ ./build/ARM/gem5.opt configs/example/fs.py --disk-image=/home/full_system_image/disks/aarch32-ubuntu-natty-headless.img
 3. Note: --disk-image=path to the full_system_image/disks/aarch32-ubuntu-natty-headless.img
 4. open a new terminal and listen to port 3456 
 5. $ telnet localhost 3456
 6. Here 3456 is a port number on the gem5 terminal
 7. this will take around 30 mins depending on the machine performance.
 8. After this,at the end you will get something like this

    input: AT Raw Set 2 keyboard as /devices/smb.14/motherboard.15/iofpga.17/1c060000.kmi/serio0/input/input0
    input: touchkitPS/2 eGalax Touchscreen as 
    /devices/smb.14/motherboard.15/iofpga.17/1c070000.kmi/serio1/input/input2
    kjournald starting. Commit interval 5 seconds
    EXT3-fs (sda1): using internal journal
    EXT3-fs (sda1): mounted filesystem with writeback data mode
    VFS: Mounted root (ext3 filesystem) on device 8:1.
    Freeing unused kernel memory: 292K (806aa000 - 806f3000)
    random: init urandom read with 14 bits of entropy available
    Ubuntu 11.04 gem5sim ttySA0

 9. login as root

瞧，您已经在 FS 模式下运行了 gem5。