在qemu vexpress-a15平台运行xen
此文章参考xen官网网站的wiki，感兴趣的同学可以自行去学习。xen wiki链接网址
1）安装编译器：
sudo apt-get install gcc-arm-linux-gnueabihf
2）从uboot官方下载源码进行编译
git clone git://git.denx.de/u-boot.git u-boot cd u-boot git checkout v2015.10
构建uboot源码：
make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- vexpress_ca15_tc2_defconfig
make CROSS_COMPILE=arm-linux-gnueabihf- -j4
3）编译设备树
dtc工具安装：
sudo apt-get install device-tree-compiler
由dts生成dtb:
dtc -I dts -O dtb -o vexpress-v2p-ca15_a7.dtb vexpress-v2p-ca15_a7.dts
4）编译xen
安装编译环境：
sudo apt-get install bcc
sudo apt-get install liblzma-dev
sudo apt-get install python3-dev
sudo apt-get install libaio-dev
sudo apt-get install libssl-dev
sudo apt-get install libglib2.0-dev
sudo apt-get install libncurses5-dev
sudo apt-get install uuid-dev
sudo apt-get install iasl
sudo apt-get install libyajl-dev
sudo apt-get install flex
sudo apt-get install bison
sudo apt install u-boot-tools
获取xen源码：
git clone git://xenbits.xenproject.org/xen.git cd xen git checkout 2e9f5f726285deee96d7d9f89ce5680a0101111a -b stout_xen
配置xen：
cd stout_xen
XEN_TARGET_ARCH=arm32 ./configure
启动调试选项：
cd xen
make menuconfig XEN_TARGET_ARCH=arm32
Debugging Options --->
[*] Developer Checks
[*] Early printk (Early printk with pl011 for versatile express│ │
│ │ (0x1c090000) Early printk, physical base address of debug UART编译：
cd ..
make xen XEN_TARGET_ARCH=arm32 CROSS_COMPILE=arm-linux-gnueabihf- debug=y -j4
制作Xen uImage镜像:
mkimage -A arm -T kernel -a 0x80200000 -e 0x80200000 -C none -d xen/xen xen/xen-uImage
5）在qemu上运行xen
u-boot启动xen：
qemu-system-aarch64 -machine vexpress-a15 -machine virtualization=true -cpu cortex-a15 -m 2048 -kernel u-boot -device loader,file=xen-uImage,force-raw=on,addr=0x80400000 -device loader,file=vexpress-v2p-ca15_a7.dtb,addr=0x81f00000 -nographic
U-Boot 2019.10 (Feb 09 2022 - 18:17:19 -0800)
DRAM: 1 GiB
WARNING: Caches not enabled
Flash: 128 MiB
MMC: MMC: 0
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: smc911x-0
Hit any key to stop autoboot: 0
=> bootm 0x80400000 - 0x81f00000
跳转至xen启动地址：
bootm 0x80400000 - 0x81f00000
U-Boot 2019.10 (Feb 09 2022 - 18:17:19 -0800)
DRAM: 1 GiB
WARNING: Caches not enabled
Flash: 128 MiB
MMC: MMC: 0
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: smc911x-0
Hit any key to stop autoboot: 0
=> bootm 0x80400000 - 0x81f00000
## Booting kernel from Legacy Image at 80400000 ...
Image Name:
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 1048584 Bytes = 1 MiB
Load Address: 80200000
Entry Point: 80200000
Verifying Checksum ... OK
## Flattened Device Tree blob at 81f00000
Booting using the fdt blob at 0x81f00000
Loading Kernel Image
Loading Device Tree to 9fe7f000, end 9fe8642b ... OK
Starting kernel ...
- UART enabled -
- Boot CPU booting -
- Setting up control registers -
- Turning on paging -
- Zero BSS -
- Ready -
(XEN) Checking for initrd in /chosen
(XEN) RAM: 0000000080000000 - 000000009fffffff
(XEN) RAM: 00000000a0000000 - 00000000bfffffff
(XEN)
(XEN) MODULE[0]: 0000000080200000 - 000000008033e290 Xen
(XEN) MODULE[1]: 000000009fe7f000 - 000000009fe84000 Device Tree
(XEN) MODULE[2]: 00000000a0008000 - 00000000a0a08000 Kernel
(XEN) RESVD[0]: 000000009ffd1000 - 000000009ffd1138
(XEN)
(XEN)
(XEN) Command line: dom0_mem=512M console=dtuart dtuart=serial0 dom0_vcpus_pin hmp-unsafe=true dom0_max_vcpus=1 bootscrub=0 loglvl=all
(XEN) PFN compression on bits 18...18
(XEN) Xen heap: 00000000be000000-00000000c0000000 (8192 pages)
(XEN) Dom heap: 253952 pages
(XEN) Domain heap initialised
(XEN) Booting using Device Tree
(XEN) Platform: VERSATILE EXPRESS
(XEN) Looking for dtuart at "serial0", options ""
Xen 4.16-unstable
(XEN) Xen version 4.16-unstable (hdwei@) (arm-linux-gnueabihf-gcc (Linaro GCC 6.5-2018.12) 6.5.0) debug=y Wed Feb 9 19:00:54 PST 2022
(XEN) Latest ChangeSet: Fri Sep 3 15:10:43 2021 +0200 git:2d4978e-dirty
(XEN) build-id: 27adefed2e9ad2dd30659e074fbc2c6de5d6cd64
(XEN) Processor: 412fc0f1: "ARM Limited", variant: 0x2, part 0xc0f,rev 0x1
(XEN) 32-bit Execution:
(XEN) Processor Features: 00001131:00011011
(XEN) Instruction Sets: AArch32 A32 Thumb Thumb-2 ThumbEE Jazelle
(XEN) Extensions: GenericTimer Security
(XEN) Debug Features: 02010555
(XEN) Auxiliary Features: 00000000
(XEN) Memory Model Features: 10201105 20000000
(XEN) 01240000 02102211
(XEN) ISA Features: 02101110 13112111 21232041
(XEN) 11112131 10011142 00000000
(XEN) Set SYS_FLAGS to 00000000802000f0 (002000f0)
(XEN) SMP: Allowing 1 CPUs
(XEN) Generic Timer IRQ: phys=30 hyp=26 virt=27 Freq: 62500 KHz
(XEN) GICv2 initialization:
(XEN) gic_dist_addr=000000002c001000
(XEN) gic_cpu_addr=000000002c002000
(XEN) gic_hyp_addr=000000002c004000
(XEN) gic_vcpu_addr=000000002c006000
(XEN) gic_maintenance_irq=25
(XEN) GICv2: 160 lines, 1 cpu, secure (IID 00000000).
(XEN) XSM Framework v1.0.0 initialized
(XEN) Initialising XSM SILO mode
(XEN) Using scheduler: SMP Credit Scheduler rev2 (credit2)
(XEN) Initializing Credit2 scheduler
(XEN) load_precision_shift: 18
(XEN) load_window_shift: 30
(XEN) underload_balance_tolerance: 0
(XEN) overload_balance_tolerance: -3
(XEN) runqueues arrangement: socket
(XEN) cap enforcement granularity: 10ms
(XEN) load tracking window length 1073741824 ns
(XEN) Allocated console ring of 16 KiB.
(XEN) VFP implementer 0x41 architecture 4 part 0x30 variant 0xf rev 0x0
(XEN) CPU0: Guest atomics will try 1 times before pausing the domain
(XEN) Brought up 1 CPUs
(XEN) I/O virtualisation disabled
(XEN) P2M: 40-bit IPA
(XEN) P2M: 3 levels with order-1 root, VTCR 0x80003558
(XEN) Scheduling granularity: cpu, 1 CPU per sched-resource
(XEN) Adding cpu 0 to runqueue 0
(XEN) First cpu on runqueue, activating
(XEN) alternatives: Patching with alt table 002d267c -> 002d276c
(XEN) CPU0 will execute ICIALLU on guest exit
(XEN) *** LOADING DOMAIN 0 ***
(XEN) Loading d0 kernel from boot module @ 00000000a0008000
(XEN)
(XEN) ****************************************
(XEN) Panic on CPU 0:
(XEN) Could not set up DOM0 guest OS
(XEN) ****************************************
(XEN)
(XEN) Reboot in five seconds...