平台
Ubuntu 20.04 + Buildroot 2021.02 + OpenJDK 11.0.8
目标
配置Buildroot使能OpenJDK,
编译后模拟器运行如下:
~/codes/buildroot-2021.02$ ./output/images/start-qemu.sh VNC server running on ::1:5900 Booting Linux on physical CPU 0x0 Linux version 5.10.7 (anson@server4) (arm-buildroot-linux-gnueabihf-gcc.br_real (Buildroot 2021.02) 9.3.0, GNU ld (GNU Binutils) 2.35.2) #1 SMP Fri Jul 16 12:00:54 CST 2021 CPU: ARMv7 Processor [410fc090] revision 0 (ARMv7), cr=10c5387d CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache OF: fdt: Machine model: V2P-CA9 Memory policy: Data cache writeback Reserved memory: created DMA memory pool at 0x4c000000, size 8 MiB OF: reserved mem: initialized node vram@4c000000, compatible id shared-dma-pool cma: Reserved 16 MiB at 0x6f000000 Zone ranges: Normal [mem 0x0000000060000000-0x000000006fffffff] Movable zone start for each node Early memory node ranges node 0: [mem 0x0000000060000000-0x000000006fffffff] Initmem setup node 0 [mem 0x0000000060000000-0x000000006fffffff] CPU: All CPU(s) started in SVC mode. percpu: Embedded 19 pages/cpu s46156 r8192 d23476 u77824 Built 1 zonelists, mobility grouping on. Total pages: 65024 Kernel command line: console=ttyAMA0,115200 rootwait root=/dev/mmcblk0 printk: log_buf_len individual max cpu contribution: 4096 bytes printk: log_buf_len total cpu_extra contributions: 12288 bytes printk: log_buf_len min size: 16384 bytes printk: log_buf_len: 32768 bytes printk: early log buf free: 14800(90%) Dentry cache hash table entries: 32768 (order: 5, 131072 bytes, linear) Inode-cache hash table entries: 16384 (order: 4, 65536 bytes, linear) mem auto-init: stack:off, heap alloc:off, heap free:off Memory: 231920K/262144K available (7168K kernel code, 583K rwdata, 1748K rodata, 1024K init, 181K bss, 13840K reserved, 16384K cma-reserved) SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1 rcu: Hierarchical RCU implementation. rcu: RCU event tracing is enabled. rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4. rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4 NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16 GIC CPU mask not found - kernel will fail to boot. GIC CPU mask not found - kernel will fail to boot. L2C: platform modifies aux control register: 0x02020000 -> 0x02420000 L2C: DT/platform modifies aux control register: 0x02020000 -> 0x02420000 L2C-310 enabling early BRESP for Cortex-A9 L2C-310 full line of zeros enabled for Cortex-A9 L2C-310 dynamic clock gating disabled, standby mode disabled L2C-310 cache controller enabled, 8 ways, 128 kB L2C-310: CACHE_ID 0x410000c8, AUX_CTRL 0x46420001 random: get_random_bytes called from start_kernel+0x384/0x538 with crng_init=0 sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns clocksource: arm,sp804: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275 ns Failed to initialize '/bus@4000000/motherboard/iofpga@7,00000000/timer@12000': -22 smp_twd: clock not found -2 Console: colour dummy device 80x30 Calibrating local timer... 99.89MHz. Calibrating delay loop... 439.91 BogoMIPS (lpj=2199552) pid_max: default: 32768 minimum: 301 Mount-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes, linear) CPU: Testing write buffer coherency: ok CPU0: Spectre v2: using BPIALL workaround CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 Setting up static identity map for 0x60100000 - 0x60100060 rcu: Hierarchical SRCU implementation. smp: Bringing up secondary CPUs ... smp: Brought up 1 node, 1 CPU SMP: Total of 1 processors activated (439.91 BogoMIPS). CPU: All CPU(s) started in SVC mode. devtmpfs: initialized VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 0 clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns futex hash table entries: 1024 (order: 4, 65536 bytes, linear) NET: Registered protocol family 16 DMA: preallocated 256 KiB pool for atomic coherent allocations cpuidle: using governor ladder hw-breakpoint: debug architecture 0x4 unsupported. Serial: AMBA PL011 UART driver irq: type mismatch, failed to map hwirq-75 for interrupt-controller@1e001000! SCSI subsystem initialized usbcore: registered new interface driver usbfs usbcore: registered new interface driver hub usbcore: registered new device driver usb Advanced Linux Sound Architecture Driver Initialized. clocksource: Switched to clocksource arm,sp804 NET: Registered protocol family 2 tcp_listen_portaddr_hash hash table entries: 512 (order: 0, 6144 bytes, linear) TCP established hash table entries: 2048 (order: 1, 8192 bytes, linear) TCP bind hash table entries: 2048 (order: 2, 16384 bytes, linear) TCP: Hash tables configured (established 2048 bind 2048) UDP hash table entries: 256 (order: 1, 8192 bytes, linear) UDP-Lite hash table entries: 256 (order: 1, 8192 bytes, linear) NET: Registered protocol family 1 RPC: Registered named UNIX socket transport module. RPC: Registered udp transport module. RPC: Registered tcp transport module. RPC: Registered tcp NFSv4.1 backchannel transport module. hw perfevents: enabled with armv7_cortex_a9 PMU driver, 5 counters available workingset: timestamp_bits=30 max_order=16 bucket_order=0 squashfs: version 4.0 (2009/01/31) Phillip Lougher jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc. 9p: Installing v9fs 9p2000 file system support io scheduler mq-deadline registered io scheduler kyber registered i2c i2c-0: Added multiplexed i2c bus 2 physmap-flash 40000000.flash: physmap platform flash device: [mem 0x40000000-0x43ffffff] 40000000.flash: Found 2 x16 devices at 0x0 in 32-bit bank. Manufacturer ID 0x000000 Chip ID 0x000000 Intel/Sharp Extended Query Table at 0x0031 Using buffer write method physmap-flash 40000000.flash: physmap platform flash device: [mem 0x44000000-0x47ffffff] 40000000.flash: Found 2 x16 devices at 0x0 in 32-bit bank. Manufacturer ID 0x000000 Chip ID 0x000000 Intel/Sharp Extended Query Table at 0x0031 Using buffer write method Concatenating MTD devices: (0): "40000000.flash" (1): "40000000.flash" into device "40000000.flash" physmap-flash 48000000.psram: physmap platform flash device: [mem 0x48000000-0x49ffffff] libphy: Fixed MDIO Bus: probed libphy: smsc911x-mdio: probed smsc911x 4e000000.ethernet eth0: MAC Address: 52:54:00:12:34:56 isp1760 4f000000.usb: bus width: 32, oc: digital isp1760 4f000000.usb: NXP ISP1760 USB Host Controller isp1760 4f000000.usb: new USB bus registered, assigned bus number 1 isp1760 4f000000.usb: Scratch test failed. isp1760 4f000000.usb: can't setup: -19 isp1760 4f000000.usb: USB bus 1 deregistered usbcore: registered new interface driver usb-storage ledtrig-cpu: registered to indicate activity on CPUs usbcore: registered new interface driver usbhid usbhid: USB HID core driver NET: Registered protocol family 17 9pnet: Installing 9P2000 support oprofile: using arm/armv7-ca9 Registering SWP/SWPB emulation handler aaci-pl041 10004000.aaci: ARM AC'97 Interface PL041 rev0 at 0x10004000, irq 32 aaci-pl041 10004000.aaci: FIFO 512 entries mmci-pl18x 10005000.mmci: Got CD GPIO mmci-pl18x 10005000.mmci: Got WP GPIO mmci-pl18x 10005000.mmci: mmc0: PL181 manf 41 rev0 at 0x10005000 irq 33,34 (pio) 10009000.uart: ttyAMA0 at MMIO 0x10009000 (irq = 37, base_baud = 0) is a PL011 rev1 printk: console [ttyAMA0] enabled 1000a000.uart: ttyAMA1 at MMIO 0x1000a000 (irq = 38, base_baud = 0) is a PL011 rev1 1000b000.uart: ttyAMA2 at MMIO 0x1000b000 (irq = 39, base_baud = 0) is a PL011 rev1 1000c000.uart: ttyAMA3 at MMIO 0x1000c000 (irq = 40, base_baud = 0) is a PL011 rev1 rtc-pl031 10017000.rtc: registered as rtc0 rtc-pl031 10017000.rtc: setting system clock to 2021-08-10T00:58:06 UTC (1628557086) mmc0: new SD card at address 4567 drm-clcd-pl111 1001f000.clcd: assigned reserved memory node vram@4c000000 drm-clcd-pl111 1001f000.clcd: using device-specific reserved memory drm-clcd-pl111 1001f000.clcd: core tile graphics present drm-clcd-pl111 1001f000.clcd: this device will be deactivated drm-clcd-pl111 1001f000.clcd: Versatile Express init failed - -19 drm-clcd-pl111 10020000.clcd: DVI muxed to daughterboard 1 (core tile) CLCD mmcblk0: mmc0:4567 QEMU! 256 MiB drm-clcd-pl111 10020000.clcd: initializing Versatile Express PL111 drm-clcd-pl111 10020000.clcd: found bridge on endpoint 0 drm-clcd-pl111 10020000.clcd: Using non-panel bridge input: AT Raw Set 2 keyboard as /devices/platform/bus@4000000/bus@4000000:motherboard/bus@4000000:motherboard:iofpga@7,00000000/10006000.kmi/serio0/input/input0 [drm] Initialized pl111 1.0.0 20170317 for 10020000.clcd on minor 0 Console: switching to colour frame buffer device 128x48 drm-clcd-pl111 10020000.clcd: [drm] fb0: pl111drmfb frame buffer device ALSA device list: #0: ARM AC'97 Interface PL041 rev0 at 0x10004000, irq 32 input: ImExPS/2 Generic Explorer Mouse as /devices/platform/bus@4000000/bus@4000000:motherboard/bus@4000000:motherboard:iofpga@7,00000000/10007000.kmi/serio1/input/input2 random: fast init done EXT4-fs (mmcblk0): mounted filesystem without journal. Opts: (null) VFS: Mounted root (ext4 filesystem) readonly on device 179:0. devtmpfs: mounted Freeing unused kernel memory: 1024K Run /sbin/init as init process random: crng init done EXT4-fs (mmcblk0): warning: mounting unchecked fs, running e2fsck is recommended EXT4-fs (mmcblk0): re-mounted. Opts: (null) ext4 filesystem being remounted at / supports timestamps until 2038 (0x7fffffff) Starting syslogd: OK Starting klogd: OK Running sysctl: OK Initializing random number generator: OK Saving random seed: OK Starting network: Generic PHY 4e000000.ethernet-ffffffff:01: attached PHY driver [Generic PHY] (mii_bus:phy_addr=4e000000.ethernet-ffffffff:01, irq=POLL) smsc911x 4e000000.ethernet eth0: SMSC911x/921x identified at 0x908b0000, IRQ: 30 udhcpc: started, v1.33.0 udhcpc: sending discover udhcpc: sending select for 10.0.2.15 udhcpc: lease of 10.0.2.15 obtained, lease time 86400 deleting routers adding dns 10.0.2.3 OK Starting cupsd: OK Welcome to Buildroot buildroot login: root # # # # # java -version openjdk version "11.0.8" 2020-07-14 OpenJDK Runtime Environment (build 11.0.8+11) OpenJDK Server VM (build 11.0.8+11, mixed mode)
参考.config
准备
OpenJDK的包处于:
~/codes/buildroot-2021.02$ ll package/openjdk total 104 drwxrwxr-x 4 anson anson 4096 3月 7 05:16 ./ drwxrwxr-x 2495 anson anson 69632 3月 7 05:16 ../ drwxrwxr-x 2 anson anson 4096 3月 7 05:16 11.0.8+10/ drwxrwxr-x 2 anson anson 4096 3月 7 05:16 14.0.2+12/ -rw-rw-r-- 1 anson anson 5178 3月 7 05:16 Config.in -rw-rw-r-- 1 anson anson 291 3月 7 05:16 openjdk.hash -rw-rw-r-- 1 anson anson 5099 3月 7 05:16 openjdk.mk
Config.in
cat package/openjdk/Config.in config BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS bool default y if BR2_HOSTARCH = "x86_64" # Taken from make/autoconf/platform.m4 config BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS bool default y if BR2_aarch64 default y if BR2_arm default y if BR2_i386 || BR2_x86_64 default y if BR2_m68k default y if BR2_powerpc || BR2_powerpc64 || BR2_powerpc64le default y if BR2_sh config BR2_PACKAGE_OPENJDK bool "openjdk" depends on BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS depends on !BR2_SOFT_FLOAT depends on !BR2_STATIC_LIBS # glibc depends on BR2_INSTALL_LIBSTDCPP # cups depends on BR2_TOOLCHAIN_HAS_THREADS # alsa-lib, cups, libusb depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # libusb depends on BR2_TOOLCHAIN_USES_GLIBC depends on BR2_USE_MMU # cups depends on BR2_PACKAGE_XORG7 select BR2_PACKAGE_ALSA_LIB select BR2_PACKAGE_ALSA_LIB_MIXER select BR2_PACKAGE_ALSA_LIB_PCM select BR2_PACKAGE_ALSA_LIB_RAWMIDI select BR2_PACKAGE_ALSA_LIB_SEQ select BR2_PACKAGE_CUPS select BR2_PACKAGE_FONTCONFIG select BR2_PACKAGE_GIFLIB select BR2_PACKAGE_JPEG select BR2_PACKAGE_LCMS2 select BR2_PACKAGE_LIBPNG select BR2_PACKAGE_LIBUSB select BR2_PACKAGE_XLIB_LIBXRANDR select BR2_PACKAGE_XLIB_LIBXRENDER select BR2_PACKAGE_XLIB_LIBXT select BR2_PACKAGE_XLIB_LIBXTST select BR2_PACKAGE_ZLIB help OpenJDK is a free and open-source implementation of the Java Platform. http://openjdk.java.net/ if BR2_PACKAGE_OPENJDK choice prompt "openjdk version" default BR2_OPENJDK_VERSION_LATEST help Select the version of OpenJDK you wish to use. config BR2_OPENJDK_VERSION_LTS bool "LTS (OpenJDK 11)" config BR2_OPENJDK_VERSION_LATEST bool "latest (OpenJDK 14)" endchoice config BR2_PACKAGE_OPENJDK_FULL_JDK bool "Build the full JDK" help Install the full JDK instead of just the run time. The full JDK includes several packages used for debugging and development. Some useful tools included with the JDK are: - javaws Command line tool for launching Java Web Start and setting various options. - jcmd: JVM Diagnostic Commands tool: Sends diagnostic command requests to a running Java Virtual Machine. - jinfo Configuration Info for Java: Prints configuration information for a given process or core file or a remote debug server. - jmap Memory Map for Java: Prints shared object memory maps or heap memory details of a given process or core file or a remote debug server. - jsadebugd Serviceability Agent Debug Daemon for Java: Attaches to a process or core file and acts as a debug server. - jstack Stack Trace for Java - Prints a stack trace of threads for a given process or core file or remote debug server. - jstat JVM Statistics Monitoring Tool: Attaches to an instrumented HotSpot Java virtual machine and collects and logs performance statistics as specified by the command line options. - jstatd JVM jstat Daemon - Launches an RMI server application that monitors for the creation and termination of instrumented HotSpot Java virtual machines and provides an interface to allow remote monitoring tools to attach to Java virtual machines running on the local system. Note: While the JDK also comes with several tools which can be used for developing java applications on a target, Buildroot does not support development on a target. Building the full JDK is supported for debugging purposes only. Selecting this option increases the file system by approximately 110M. choice prompt "openjdk variant" default BR2_PACKAGE_OPENJDK_JVM_VARIANT_SERVER if !BR2_powerpc default BR2_PACKAGE_OPENJDK_JVM_VARIANT_ZERO if BR2_powerpc config BR2_PACKAGE_OPENJDK_JVM_VARIANT_CLIENT bool "client" depends on !BR2_powerpc help Quick loading, but slower run-time performance. config BR2_PACKAGE_OPENJDK_JVM_VARIANT_SERVER bool "server" depends on !BR2_powerpc help Slower loading, but faster run-time performance. config BR2_PACKAGE_OPENJDK_JVM_VARIANT_ZERO bool "zero" select BR2_PACKAGE_LIBFFI help A non-assembler variant with wide arch support, however performance is less then client/server. http://openjdk.java.net/projects/zero endchoice endif comment "openjdk needs X.Org" depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS depends on BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS depends on BR2_USE_MMU depends on !BR2_PACKAGE_XORG7 comment "openjdk needs glibc, and a toolchain w/ wchar, dynamic library, threads, C++, gcc >= 4.9" depends on BR2_USE_MMU depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS depends on BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS depends on BR2_STATIC_LIBS || !BR2_INSTALL_LIBSTDCPP || \ !BR2_TOOLCHAIN_HAS_THREADS || \ !BR2_TOOLCHAIN_USES_GLIBC || \ !BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 comment "openjdk does not support soft float configurations" depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS depends on BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS depends on BR2_USE_MMU depends on BR2_SOFT_FLOAT
依赖的配置不少:
depends on BR2_PACKAGE_HOST_OPENJDK_BIN_ARCH_SUPPORTS depends on BR2_PACKAGE_OPENJDK_ARCH_SUPPORTS depends on !BR2_SOFT_FLOAT depends on !BR2_STATIC_LIBS # glibc depends on BR2_INSTALL_LIBSTDCPP # cups depends on BR2_TOOLCHAIN_HAS_THREADS # alsa-lib, cups, libusb depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # libusb depends on BR2_TOOLCHAIN_USES_GLIBC depends on BR2_USE_MMU # cups depends on BR2_PACKAGE_XORG7
配置 menuconfig
一些过程
若出现 openjdk 无法勾选:
检查对应的依赖.
改下 glibc:
再去打开X.org即可
openjdk needs glibc, and a toolchain w/ wchar, dynamic library, threads, C++, gcc
勾选上:
写在最后
虽然在模拟环境下, 已经打通了任督二脉, 可惜没有办法在实际设备上做更多测试, 手上有的设备使用的是MIPS架构, 而OPENJDK对MIPS的支持早在几年前就停止了
