搭建QEMU + ARM64 Linux Kernel 开发环境
准备好Vmware 的Ubuntu OS, 在虚拟机的Ubuntu上搭建Qemu + ARM64的开发和调试环境
VMware® Workstation 16 Player, 本人虚拟机上的Ubuntu版本信息如下
guojia@ubuntu:~/.vim/bundle/YouCompleteMe$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.3 LTS
Release: 20.04
Codename: focal
-
下载qemu
https://www.qemu.org/download/
选择最新的发布版本6.2.0 -
编译qemu
参考资料: https://wiki.qemu.org/Hosts/Linux
step1:
tar -xvf qemu-6.2.0.tar.xz
cd qemu-6.2.0/
./configure
错误提示1:
Using './build' as the directory for build output
ERROR: Cannot find Ninja
解决方法:
sudo apt-get install ninja-build
step2:
make
qemu build 完成之后生成的可执行文件在 “qemu-6.2.0/build”, 我们需要的aarch64的qemu可执行文件已经生成
guojia@ubuntu:~/jiaguo/qemu/qemu-6.2.0/build/aarch64-softmmu$ ls -al
total 28
drwxrwxr-x 2 guojia guojia 4096 Mar 12 03:38 .
drwxrwxr-x 262 guojia guojia 24576 Mar 12 04:27 ..
lrwxrwxrwx 1 guojia guojia 22 Mar 12 03:38 qemu-system-aarch64 -> ../qemu-system-aarch64
guojia@ubuntu:~/jiaguo/qemu/qemu-6.2.0/build/aarch64-softmmu$
- buildroot 制作跟文件系统
https://buildroot.org/download.html
下载最新的buildroot release: buildroot-2022.02.tar.gz
step1:
tar -xvf buildroot-2022.02.tar.gz
step2:
cd buildroot-2022.02
make menuconfig
错误提示1:
*** Unable to find the ncurses libraries or the
*** required header files.
*** 'make menuconfig' requires the ncurses libraries.
***
*** Install ncurses (ncurses-devel or libncurses-dev
*** depending on your distribution) and try again.
解决方法:
sudo apt install libncurses-dev
配置Target options
选择Aarch64 (little endian)
配置Toolchain
选择External toolchain
配置System configuration
设置Root password
配置tty
设置TTY port: ttyAMA0
配置Target packages
选择Show packages that are also provided by busybox
设置Debugging, profiling and benchmark
选择自己需要的工具，我们选择strace
设置 Text editors and viewers
我们选择vim
配置Filesystem images
选择cpio the root filesystem (for use as an initial RAM filesystem)
编译好的rootfs在下面的路径
guojia@ubuntu:~/jiaguo/tools/buildroot-2022.02/output/images$ ls -al
total 53180
drwxr-xr-x 2 guojia guojia 4096 Mar 12 18:26 .
drwxrwxr-x 6 guojia guojia 4096 Mar 12 18:26 ..
-rw-r--r-- 1 guojia guojia 25804288 Mar 12 18:26 rootfs.cpio
-rw-r--r-- 1 guojia guojia 28641280 Mar 12 18:26 rootfs.tar
- 编译Linux kernel (arm64)
step1:
下载aarch64 交叉编译工具链
https://releases.linaro.org/components/toolchain/binaries/
这里我们选择gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu.tar.xz
step2:
下载Linux kernel 源代码: https://www.kernel.org/
本人是事先下载好的linux-5.16.9
step3:
编译Linux kernel, arm64默认的配置文件在arch/arm64/config下面
guojia@ubuntu:~/jiaguo/opensrc/linux-5.16.9/arch/arm64/configs$ ls -al
total 40
drwxrwxr-x 2 guojia guojia 4096 Mar 12 18:38 .
drwxrwxr-x 14 guojia guojia 4096 Feb 11 00:26 ..
-rw-rw-r-- 1 guojia guojia 29192 Feb 11 00:26 defconfig
step4:
写一个配置环境变量和make menuconfig的脚本config_kernel.sh
#! /bin/bash
BUILD_DIR=/home/guojia/jiaguo/opensrc/linux-5.16.9
if [ ! -z $1 ]
then
BUILD_DIR=$1
fi
export ARCH=arm64
export CROSS_COMPILE=/home/guojia/jiaguo/tools/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
cd $BUILD_DIR
make menuconfig
执行config_kernel.sh, 遇到flex的错误提示
guojia@ubuntu:~/jiaguo/tools/scripts$ sh setup_buildenv.sh /home/guojia/jiaguo/opensrc/linux-5.16.9
LEX scripts/kconfig/lexer.lex.c
/bin/sh: 1: flex: not found
make[1]: *** [scripts/Makefile.host:9: scripts/kconfig/lexer.lex.c] Error 127
make: *** [Makefile:619: defconfig] Error 2
解决方法：
sudo apt install flex
再次执行setup_buildenv.sh, 遇到bison的错误提示
guojia@ubuntu:~/jiaguo/tools/scripts$ sh setup_buildenv.sh /home/guojia/jiaguo/opensrc/linux-5.16.9
LEX scripts/kconfig/lexer.lex.c
YACC scripts/kconfig/parser.tab.[ch]
/bin/sh: 1: bison: not found
make[1]: *** [scripts/Makefile.host:17: scripts/kconfig/parser.tab.h] Error 127
make: *** [Makefile:619: defconfig] Error 2
解决方法:
sudo apt install bison -y
step5:
问题解决之后继续配置Boot options
设置Default kernel command string
配置Initramfs source file
找到buildroot时生成的rootfs.cpio把，路径设置到这里
编译Linux kernel
写一个编译linux kernel的脚本，build_kernel.sh
#! /bin/bash
BUILD_DIR=/home/guojia/jiaguo/opensrc/linux-5.16.9
if [ ! -z $1 ]
then
BUILD_DIR=$1
fi
export ARCH=arm64
export CROSS_COMPILE=/home/guojia/jiaguo/tools/gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
cd $BUILD_DIR
make -j4
执行脚本
sh build_kernel.sh /home/guojia/jiaguo/opensrc/linux-5.16.9
编译时遇到错误信息
scripts/extract-cert.c:21:10: fatal error: openssl/bio.h: No such file or directory
21 | #include
| ^~~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [scripts/Makefile.host:95: scripts/extract-cert] Error 1
make: *** [Makefile:1181: scripts] Error 2
解决方法:
sudo apt install libssl-dev
linux kernel 编译完成之后，kernel的根目录可以找到vmlinux文件
guojia@ubuntu:~/jiaguo/opensrc/linux-5.16.9$ file vmlinux
vmlinux: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), statically linked, BuildID[sha1]=d22e4517e2555f991a40c9087991c873be2d5a92, with debug_info, not stripped
kernel的Image文件在arch/arm64/boot目录下
uojia@ubuntu:~/jiaguo/opensrc/linux-5.16.9/arch/arm64/boot$ file Image
Image: MS-DOS executable PE32+ executable (EFI application) Aarch64 (stripped to external PDB), for MS Windows
- QEMU 启动ARM64 Linux kernel 5.16.9
#! /bin/bash
/home/guojia/jiaguo/qemu/qemu-6.2.0/build/aarch64-softmmu/qemu-system-aarch64 \
-machine virt \
-cpu cortex-a57 \
-machine type=virt \
-nographic -smp 1 \
-m 2048 \
-kernel /home/guojia/jiaguo/opensrc/linux-5.16.9/arch/arm64/boot/Image \
--append "console=ttyAMA0" \
$1 $2
启动日志
guojia@ubuntu:~/jiaguo/tools/scripts/qemu$ sh start_qemu.sh
[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x411fd070]
[ 0.000000] Linux version 5.16.9-gcd4cbffd8f8b (guojia@ubuntu) (aarch64-linux-gnu-gcc (Linaro GCC 7.5-2019.12) 7.5.0, GNU ld (Linaro_Binutils-2019.12) 2.28.2.20170706) #3 SMP PREEMPT Sun Mar 13 05:53:15 PDT 2022
[ 0.000000] Machine model: linux,dummy-virt
[ 0.000000] efi: UEFI not found.
[ 0.000000] NUMA: No NUMA configuration found
[ 0.000000] NUMA: Faking a node at [mem 0x0000000040000000-0x00000000bfffffff]
[ 0.000000] NUMA: NODE_DATA [mem 0xbfbf2b40-0xbfbf4fff]
[ 0.000000] Zone ranges:
[ 0.000000] DMA [mem 0x0000000040000000-0x00000000bfffffff]
[ 0.000000] DMA32 empty
[ 0.000000] Normal empty
[ 0.000000] Movable zone start for each node
[ 0.000000] Early memory node ranges
[ 0.000000] node 0: [mem 0x0000000040000000-0x00000000bfffffff]
[ 0.000000] Initmem setup node 0 [mem 0x0000000040000000-0x00000000bfffffff]
[ 0.000000] cma: Reserved 32 MiB at 0x00000000bb800000
[ 0.000000] psci: probing for conduit method from DT.
[ 0.000000] psci: PSCIv0.2 detected in firmware.
[ 0.000000] psci: Using standard PSCI v0.2 function IDs
[ 0.000000] psci: Trusted OS migration not required
[ 0.000000] percpu: Embedded 20 pages/cpu s41240 r8192 d32488 u81920
[ 0.000000] Detected PIPT I-cache on CPU0
[ 0.000000] CPU features: detected: Spectre-v2
[ 0.000000] CPU features: detected: Spectre-v3a
[ 0.000000] CPU features: detected: Spectre-v4
[ 0.000000] CPU features: kernel page table isolation forced ON by KASLR
[ 0.000000] CPU features: detected: Kernel page table isolation (KPTI)
[ 0.000000] CPU features: detected: ARM erratum 834220
[ 0.000000] CPU features: detected: ARM erratum 832075
[ 0.000000] CPU features: detected: ARM errata 1165522, 1319367, or 1530923
[ 0.000000] Fallback order for Node 0: 0
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 516096
[ 0.000000] Policy zone: DMA
[ 0.000000] Kernel command line: console=ttyAMA0
[ 0.000000] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
[ 0.000000] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes, linear)
[ 0.000000] mem auto-init: stack:off, heap alloc:off, heap free:off
[ 0.000000] Memory: 1980928K/2097152K available (15232K kernel code, 3194K rwdata, 8500K rodata, 14720K init, 510K bss, 83456K reserved, 32768K cma-reserved)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] rcu: Preemptible hierarchical RCU implementation.
[ 0.000000] rcu: RCU event tracing is enabled.
[ 0.000000] rcu: RCU restricting CPUs from NR_CPUS=256 to nr_cpu_ids=1.
[ 0.000000] Trampoline variant of Tasks RCU enabled.
[ 0.000000] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
[ 0.000000] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.000000] NR_IRQS: 64, nr_irqs: 64, preallocated irqs: 0
[ 0.000000] Root IRQ handler: gic_handle_irq
[ 0.000000] GICv2m: range[mem 0x08020000-0x08020fff], SPI[80:143]
[ 0.000000] random: get_random_bytes called from start_kernel+0x484/0x674 with crng_init=0
[ 0.000000] arch_timer: cp15 timer(s) running at 62.50MHz (virt).
[ 0.000000] clocksource: arch_sys_counter: mask: 0x1ffffffffffffff max_cycles: 0x1cd42e208c, max_idle_ns: 881590405314 ns
[ 0.000058] sched_clock: 57 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns
[ 0.002882] Console: colour dummy device 80x25
[ 0.006210] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=250000)
[ 0.006302] pid_max: default: 32768 minimum: 301
[ 0.006802] LSM: Security Framework initializing
[ 0.007750] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear)
[ 0.007785] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear)
[ 0.028122] /cpus/cpu-map: empty cluster
[ 0.033620] rcu: Hierarchical SRCU implementation.
[ 0.036698] EFI services will not be available.
[ 0.037054] smp: Bringing up secondary CPUs ...
[ 0.037118] smp: Brought up 1 node, 1 CPU
[ 0.037137] SMP: Total of 1 processors activated.
[ 0.037208] CPU features: detected: 32-bit EL0 Support
[ 0.037226] CPU features: detected: 32-bit EL1 Support
[ 0.037278] CPU features: detected: CRC32 instructions
[ 0.051634] CPU: All CPU(s) started at EL1
[ 0.051949] alternatives: patching kernel code
[ 0.064454] devtmpfs: initialized
[ 0.070743] KASLR enabled
[ 0.071469] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.071572] futex hash table entries: 256 (order: 2, 16384 bytes, linear)
[ 0.074553] pinctrl core: initialized pinctrl subsystem
[ 0.082449] DMI not present or invalid.
[ 0.087817] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 0.095968] DMA: preallocated 256 KiB GFP_KERNEL pool for atomic allocations
[ 0.096354] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA pool for atomic allocations
[ 0.096561] DMA: preallocated 256 KiB GFP_KERNEL|GFP_DMA32 pool for atomic allocations
[ 0.096733] audit: initializing netlink subsys (disabled)
[ 0.100248] audit: type=2000 audit(0.076:1): state=initialized audit_enabled=0 res=1
[ 0.101571] thermal_sys: Registered thermal governor 'step_wise'
[ 0.101610] thermal_sys: Registered thermal governor 'power_allocator'
[ 0.102758] cpuidle: using governor menu
[ 0.103398] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.
[ 0.103701] ASID allocator initialised with 32768 entries
[ 0.106564] Serial: AMBA PL011 UART driver
[ 0.130344] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 47, base_baud = 0) is a PL011 rev1
[ 0.147390] printk: console [ttyAMA0] enabled
[ 0.172649] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[ 0.172807] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages
[ 0.172901] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.173075] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages
[ 0.179018] ACPI: Interpreter disabled.
[ 0.182364] iommu: Default domain type: Translated
[ 0.182697] iommu: DMA domain TLB invalidation policy: strict mode
[ 0.183433] vgaarb: loaded
[ 0.184314] SCSI subsystem initialized
[ 0.186131] usbcore: registered new interface driver usbfs
[ 0.186389] usbcore: registered new interface driver hub
[ 0.186604] usbcore: registered new device driver usb
[ 0.187717] pps_core: LinuxPPS API ver. 1 registered
[ 0.187792] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti
[ 0.188017] PTP clock support registered
[ 0.188386] EDAC MC: Ver: 3.0.0
[ 0.191260] FPGA manager framework
[ 0.191850] Advanced Linux Sound Architecture Driver Initialized.
[ 0.202768] clocksource: Switched to clocksource arch_sys_counter
[ 0.203584] VFS: Disk quotas dquot_6.6.0
[ 0.204537] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.205652] pnp: PnP ACPI: disabled
[ 0.217411] NET: Registered PF_INET protocol family
[ 0.218913] IP idents hash table entries: 32768 (order: 6, 262144 bytes, linear)
[ 0.222891] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 16384 bytes, linear)
[ 0.223218] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear)
[ 0.223535] TCP bind hash table entries: 16384 (order: 6, 262144 bytes, linear)
[ 0.223842] TCP: Hash tables configured (established 16384 bind 16384)
[ 0.225616] UDP hash table entries: 1024 (order: 3, 32768 bytes, linear)
[ 0.225924] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes, linear)
[ 0.226892] NET: Registered PF_UNIX/PF_LOCAL protocol family
[ 0.228904] RPC: Registered named UNIX socket transport module.
[ 0.229043] RPC: Registered udp transport module.
[ 0.229122] RPC: Registered tcp transport module.
[ 0.229252] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.229517] PCI: CLS 0 bytes, default 64
[ 0.237604] hw perfevents: enabled with armv8_pmuv3 PMU driver, 5 counters available
[ 0.238136] kvm [1]: HYP mode not available
[ 0.245188] Initialise system trusted keyrings
[ 0.247705] workingset: timestamp_bits=42 max_order=19 bucket_order=0
[ 0.266363] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[ 0.272157] NFS: Registering the id_resolver key type
[ 0.272520] Key type id_resolver registered
[ 0.272602] Key type id_legacy registered
[ 0.272956] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 0.273129] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering...
[ 0.273796] 9p: Installing v9fs 9p2000 file system support
[ 0.305643] Key type asymmetric registered
[ 0.305794] Asymmetric key parser 'x509' registered
[ 0.306283] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 245)
[ 0.306504] io scheduler mq-deadline registered
[ 0.311126] io scheduler kyber registered
[ 0.347713] pl061_gpio 9030000.pl061: PL061 GPIO chip registered
[ 0.356474] pci-host-generic 4010000000.pcie: host bridge /pcie@10000000 ranges:
[ 0.357112] pci-host-generic 4010000000.pcie: IO 0x003eff0000..0x003effffff -> 0x0000000000
[ 0.357607] pci-host-generic 4010000000.pcie: MEM 0x0010000000..0x003efeffff -> 0x0010000000
[ 0.357875] pci-host-generic 4010000000.pcie: MEM 0x8000000000..0xffffffffff -> 0x8000000000
[ 0.358372] pci-host-generic 4010000000.pcie: Memory resource size exceeds max for 32 bits
[ 0.358856] pci-host-generic 4010000000.pcie: ECAM at [mem 0x4010000000-0x401fffffff] for [bus 00-ff]
[ 0.364079] pci-host-generic 4010000000.pcie: PCI host bridge to bus 0000:00
[ 0.364472] pci_bus 0000:00: root bus resource [bus 00-ff]
[ 0.364645] pci_bus 0000:00: root bus resource [io 0x0000-0xffff]
[ 0.364757] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff]
[ 0.364878] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff]
[ 0.366476] pci 0000:00:00.0: [1b36:0008] type 00 class 0x060000
[ 0.373387] pci 0000:00:01.0: [1af4:1000] type 00 class 0x020000
[ 0.373687] pci 0000:00:01.0: reg 0x10: [io 0x0000-0x001f]
[ 0.373836] pci 0000:00:01.0: reg 0x14: [mem 0x00000000-0x00000fff]
[ 0.373990] pci 0000:00:01.0: reg 0x20: [mem 0x00000000-0x00003fff 64bit pref]
[ 0.374169] pci 0000:00:01.0: reg 0x30: [mem 0x00000000-0x0003ffff pref]
[ 0.380888] pci 0000:00:01.0: BAR 6: assigned [mem 0x10000000-0x1003ffff pref]
[ 0.381401] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref]
[ 0.381650] pci 0000:00:01.0: BAR 1: assigned [mem 0x10040000-0x10040fff]
[ 0.381837] pci 0000:00:01.0: BAR 0: assigned [io 0x1000-0x101f]
[ 0.391923] EINJ: ACPI disabled.
[ 0.436111] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003)
[ 0.453457] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[ 0.461493] SuperH (H)SCI(F) driver initialized
[ 0.462264] msm_serial: driver initialized
[ 0.464890] cacheinfo: Unable to detect cache hierarchy for CPU 0
[ 0.492635] loop: module loaded
[ 0.494180] megasas: 07.719.03.00-rc1
[ 0.502798] physmap-flash 0.flash: physmap platform flash device: [mem 0x00000000-0x03ffffff]
[ 0.508368] 0.flash: Found 2 x16 devices at 0x0 in 32-bit bank. Manufacturer ID 0x000000 Chip ID 0x000000
[ 0.508893] Intel/Sharp Extended Query Table at 0x0031
[ 0.509534] Using buffer write method
[ 0.510012] physmap-flash 0.flash: physmap platform flash device: [mem 0x04000000-0x07ffffff]
[ 0.510485] 0.flash: Found 2 x16 devices at 0x0 in 32-bit bank. Manufacturer ID 0x000000 Chip ID 0x000000
[ 0.515326] Intel/Sharp Extended Query Table at 0x0031
[ 0.515808] Using buffer write method
[ 0.516012] Concatenating MTD devices:
[ 0.516088] (0): "0.flash"
[ 0.516164] (1): "0.flash"
[ 0.516270] into device "0.flash"
[ 0.842062] tun: Universal TUN/TAP device driver, 1.6
[ 0.851764] thunder_xcv, ver 1.0
[ 0.851927] thunder_bgx, ver 1.0
[ 0.852081] nicpf, ver 1.0
[ 0.853820] hclge is initializing
[ 0.853995] hns3: Hisilicon Ethernet Network Driver for Hip08 Family - version
[ 0.854141] hns3: Copyright (c) 2017 Huawei Corporation.
[ 0.854409] e1000: Intel(R) PRO/1000 Network Driver
[ 0.854485] e1000: Copyright (c) 1999-2006 Intel Corporation.
[ 0.854718] e1000e: Intel(R) PRO/1000 Network Driver
[ 0.854790] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.
[ 0.855061] igb: Intel(R) Gigabit Ethernet Network Driver
[ 0.855158] igb: Copyright (c) 2007-2014 Intel Corporation.
[ 0.855289] igbvf: Intel(R) Gigabit Virtual Function Network Driver
[ 0.855488] igbvf: Copyright (c) 2009 - 2012 Intel Corporation.
[ 0.855975] sky2: driver version 1.30
[ 0.857592] VFIO - User Level meta-driver version: 0.3
[ 0.861472] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.861785] ehci-pci: EHCI PCI platform driver
[ 0.862094] ehci-platform: EHCI generic platform driver
[ 0.862351] ehci-orion: EHCI orion driver
[ 0.862577] ehci-exynos: EHCI Exynos driver
[ 0.863112] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.863320] ohci-pci: OHCI PCI platform driver
[ 0.863691] ohci-platform: OHCI generic platform driver
[ 0.863958] ohci-exynos: OHCI Exynos driver
[ 0.865062] usbcore: registered new interface driver usb-storage
[ 0.870518] rtc-pl031 9010000.pl031: registered as rtc0
[ 0.871078] rtc-pl031 9010000.pl031: setting system clock to 2022-03-13T13:02:12 UTC (1647176532)
[ 0.872374] i2c_dev: i2c /dev entries driver
[ 0.881854] sdhci: Secure Digital Host Controller Interface driver
[ 0.882058] sdhci: Copyright(c) Pierre Ossman
[ 0.883413] Synopsys Designware Multimedia Card Interface Driver
[ 0.884535] sdhci-pltfm: SDHCI platform and OF driver helper
[ 0.886553] ledtrig-cpu: registered to indicate activity on CPUs
[ 0.889273] usbcore: registered new interface driver usbhid
[ 0.889408] usbhid: USB HID core driver
[ 0.897666] NET: Registered PF_PACKET protocol family
[ 0.898736] 9pnet: Installing 9P2000 support
[ 0.899135] Key type dns_resolver registered
[ 0.899734] Loading compiled-in X.509 certificates
[ 0.914890] input: gpio-keys as /devices/platform/gpio-keys/input/input0
[ 0.920703] ALSA device list:
[ 0.920820] No soundcards found.
[ 0.923270] uart-pl011 9000000.pl011: no DMA platform data
[ 0.952866] Freeing unused kernel memory: 14720K
[ 0.953596] Run /init as init process
Starting syslogd: OK
Starting klogd: OK
Running sysctl: OK
Saving random seed: [ 1.795942] random: dd: uninitialized urandom read (512 bytes read)
OK
Starting network: OK
Welcome to Buildroot
buildroot login: root
Password:
# cd /
# ls
bin init linuxrc opt run tmp
dev lib media proc sbin usr
etc lib64 mnt root sys var
# strace ls
execve("/bin/ls", ["ls"], 0xfffffd6b8560 /* 11 vars */) = 0
brk(NULL) = 0xaaaaeff26000
faccessat(AT_FDCWD, "/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib64/tls/aarch64/libresolv.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/lib64/tls/aarch64", 0xfffff38abec0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib64/tls/libresolv.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/lib64/tls", 0xfffff38abec0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib64/aarch64/libresolv.so.2", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/lib64/aarch64", 0xfffff38abec0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib64/libresolv.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0@8\0\0\0\0\0\0"..., 832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=80400, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffffa3e22000
mmap(NULL, 154088, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xffffa3dcc000
mprotect(0xffffa3ddf000, 61440, PROT_NONE) = 0
mmap(0xffffa3dee000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12000) = 0xffffa3dee000
mmap(0xffffa3df0000, 6632, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffffa3df0000
close(3) = 0
openat(AT_FDCWD, "/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0\267\0\1\0\0\0`\26\2\0\0\0\0\0"..., 832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=1429520, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 1523104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xffffa3c58000
mprotect(0xffffa3dae000, 65536, PROT_NONE) = 0
mmap(0xffffa3dbe000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x156000) = 0xffffa3dbe000
mmap(0xffffa3dc4000, 32160, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xffffa3dc4000
close(3) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xffffa3e20000
mprotect(0xffffa3dbe000, 16384, PROT_READ) = 0
mprotect(0xffffa3dee000, 4096, PROT_READ) = 0
mprotect(0xaaaacf6f6000, 12288, PROT_READ) = 0
mprotect(0xffffa3e27000, 8192, PROT_READ) = 0
getuid() = 0
ioctl(0, TIOCGWINSZ, {ws_row=0, ws_col=0, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
brk(NULL) = 0xaaaaeff26000
brk(0xaaaaeff47000) = 0xaaaaeff47000
newfstatat(AT_FDCWD, ".", {st_mode=S_IFDIR|0755, st_size=400, ...}, 0) = 0
openat(AT_FDCWD, ".", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=400, ...}, AT_EMPTY_PATH) = 0
getdents64(3, 0xaaaaeff26380 /* 20 entries */, 32768) = 504
newfstatat(AT_FDCWD, "./var", {st_mode=S_IFDIR|0755, st_size=200, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./usr", {st_mode=S_IFDIR|0755, st_size=140, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./tmp", {st_mode=S_IFDIR|S_ISVTX|0777, st_size=60, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./sys", {st_mode=S_IFDIR|0555, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./sbin", {st_mode=S_IFDIR|0755, st_size=1120, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./run", {st_mode=S_IFDIR|0755, st_size=160, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./root", {st_mode=S_IFDIR|0700, st_size=60, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./proc", {st_mode=S_IFDIR|0555, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./opt", {st_mode=S_IFDIR|0755, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./mnt", {st_mode=S_IFDIR|0755, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./media", {st_mode=S_IFDIR|0755, st_size=40, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./linuxrc", {st_mode=S_IFLNK|0777, st_size=11, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./lib64", {st_mode=S_IFLNK|0777, st_size=3, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./lib", {st_mode=S_IFDIR|0755, st_size=740, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./init", {st_mode=S_IFREG|0755, st_size=462, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./etc", {st_mode=S_IFDIR|0755, st_size=420, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./dev", {st_mode=S_IFDIR|0755, st_size=2980, ...}, AT_SYMLINK_NOFOLLOW) = 0
newfstatat(AT_FDCWD, "./bin", {st_mode=S_IFDIR|0755, st_size=1540, ...}, AT_SYMLINK_NOFOLLOW) = 0
getdents64(3, 0xaaaaeff26380 /* 0 entries */, 32768) = 0
close(3) = 0
newfstatat(1, "", {st_mode=S_IFCHR|0600, st_rdev=makedev(0xcc, 0x40), ...}, AT_EMPTY_PATH) = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
write(1, "\33[1;34mbin\33[m \33[1;32minit\33["..., 109bin init linuxrc opt run tmp
) = 109
write(1, "\33[1;34mdev\33[m \33[1;34mlib\33[m"..., 109dev lib media proc sbin usr
) = 109
write(1, "\33[1;34metc\33[m \33[1;36mlib64\33"..., 109etc lib64 mnt root sys var
) = 109
exit_group(0) = ?
+++ exited with 0 +++