使用yocto为raspberry编译内核
使用yocto为raspberry编译内核
目录
- 使用yocto为raspberry编译内核
- poky下载路径
- 安装~
- 导入镜像
- 内核设备树等拷贝到SD卡
- 编译版本
poky下载路径
Clone
git://git.yoctoproject.org/poky
https://git.yoctoproject.org/git/poky
git config --global https.proxy http://127.0.0.1:1080
git config --global https.proxy https://127.0.0.1:1080
这样只能实现对http/https的代理，于是我顺利的在http://git.yoctoproject.org/cgit/cgit.cgi/poky/页面的最下面找到了https的链接https://git.yoctoproject.org/git/poky。这样虽然也只有80多kb，但已经快了很多。clone完成后文件夹有185MB大小。
根据教程这里应该要安装一堆东西，我的系统是debian
apt-get install gawk wget git-core diffstat unzip texinfo gcc-multilib
build-essential chrpath socat cpio python python3 pip3 pexpect libsdl1.2-dev xterm
source oe-init-build-env
此时会建立一个build目录，并且把一些配置文件放在conf这个文件夹里面，在执行这个script的时候会提示说没有’conf/local.conf’和’conf/bblayers.conf’文件，因此新建了新的。
You had no conf/local.conf file. This configuration file has therefore been
created for you with some default values. You may wish to edit it to, for
example, select a different MACHINE (target hardware). See conf/local.conf
for more information as common configuration options are commented.
You had no conf/bblayers.conf file. This configuration file has therefore been
created for you with some default values. To add additional metadata layers
into your configuration please add entries to conf/bblayers.conf.
这时准备raspberry的bsp，http://git.yoctoproject.org/cgit/cgit.cgi/meta-raspberrypi/。这个库很小。
在这个库的about栏目里有介绍使用方法。
修改local.conf
MACHINE ??= “raspberrypi”
修改bblayers.conf，增加刚刚clone的树梅派的bsp的路径。
BBLAYERS ?= " \
/home/lichee/work/yocto/poky/meta \
/home/lichee/work/yocto/poky/meta-poky \
/home/lichee/work/yocto/poky/meta-yocto-bsp \
/home/lichee/work/yocto/meta-raspberrypi \
"
OK，这样就可以编译出默认的配置了。
bitbake rpi-hwup-image
结果报错:
You system needs to support the en_US.UTF-8 locale.
https://wiki.debian.org/Locale根据这里，我这里原来设的是’en_HK.UTF-8’，于是按照流程处理一遍为en_US utf8，但还是不对，用locale看依然是hk。最后终于找到http://unix.stackexchange.com/questions/224286/how-to-set-english-as-a-default-language-in-debian
export LANGUAGE=en_US
export LANG=en_US.UTF-8
update-locale LANG=en_US.UTF-8 LANGUAGE=en_US
又报错~
WARNING: Host distribution "Debian-9.0" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
ERROR: OE-core's config sanity checker detected a potential misconfiguration.
Either fix the cause of this error or at your own risk disable the checker (see sanity.conf).
Following is the list of potential problems / advisories:
Please install the following missing utilities: diffstat,chrpath
安装~
WARNING: Host distribution "Debian-9.0" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
ERROR: /home/lichee/work/yocto/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi_dev.bb: Error executing a python function in : | ETA: --:--:--
The stack trace of python calls that resulted in this exception/failure was:
File: '', lineno: 18, function:
0014:__anon_18__home_lichee_work_yocto_poky_meta_recipes_kernel_linux_linux_yocto_inc(d)
0015:__anon_364__home_lichee_work_yocto_poky_meta_classes_kernel_yocto_bbclass(d)
0016:__anon_6__home_lichee_work_yocto_poky_meta_recipes_kernel_linux_linux_dtb_inc(d)
0017:__anon_148__home_lichee_work_yocto_meta_raspberrypi_recipes_kernel_linux_linux_rpi_inc(d)
*** 0018:__anon_39__home_lichee_work_yocto_meta_raspberrypi_recipes_kernel_linux_linux_raspberrypi_inc(d)
File: '/home/lichee/work/yocto/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi.inc', lineno: 37, function: __anon_39__home_lichee_work_yocto_meta_raspberrypi_recipes_kernel_linux_linux_raspberrypi_inc
0033:# Set programmatically some variables during recipe parsing
0034:# See http://www.yoctoproject.org/docs/current/bitbake-user-manual/bitbake-user-manual.html#anonymous-python-functions
0035:python __anonymous () {
0036: kerneltype = d.getVar('KERNEL_IMAGETYPE')
*** 0037: kerneldt = get_dts(d, d.getVar('LINUX_VERSION'))
0038: d.setVar("KERNEL_DEVICETREE", kerneldt)
0039:}
0040:
0041:do_kernel_configme_prepend() {
Exception: TypeError: getVar() missing 1 required positional argument: 'expand'
ERROR: Failed to parse recipe: /home/lichee/work/yocto/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi_dev.bb
ERROR: /home/lichee/work/yocto/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi_4.9.bb: Error executing a python function in :
The stack trace of python calls that resulted in this exception/failure was:
File: '', lineno: 18, function:
0014:__anon_18__home_lichee_work_yocto_poky_meta_recipes_kernel_linux_linux_yocto_inc(d)
0015:__anon_364__home_lichee_work_yocto_poky_meta_classes_kernel_yocto_bbclass(d)
0016:__anon_6__home_lichee_work_yocto_poky_meta_recipes_kernel_linux_linux_dtb_inc(d)
0017:__anon_148__home_lichee_work_yocto_meta_raspberrypi_recipes_kernel_linux_linux_rpi_inc(d)
*** 0018:__anon_39__home_lichee_work_yocto_meta_raspberrypi_recipes_kernel_linux_linux_raspberrypi_inc(d)
File: '/home/lichee/work/yocto/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi.inc', lineno: 37, function: __anon_39__home_lichee_work_yocto_meta_raspberrypi_recipes_kernel_linux_linux_raspberrypi_inc
0033:# Set programmatically some variables during recipe parsing
0034:# See http://www.yoctoproject.org/docs/current/bitbake-user-manual/bitbake-user-manual.html#anonymous-python-functions
0035:python __anonymous () {
0036: kerneltype = d.getVar('KERNEL_IMAGETYPE')
*** 0037: kerneldt = get_dts(d, d.getVar('LINUX_VERSION'))
0038: d.setVar("KERNEL_DEVICETREE", kerneldt)
0039:}
0040:
0041:do_kernel_configme_prepend() {
Exception: TypeError: getVar() missing 1 required positional argument: 'expand'
ERROR: /home/lichee/work/yocto/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi_4.4.bb: Error executing a python function in :
The stack trace of python calls that resulted in this exception/failure was:
File: '', lineno: 18, function:
0014:__anon_18__home_lichee_work_yocto_poky_meta_recipes_kernel_linux_linux_yocto_inc(d)
0015:__anon_364__home_lichee_work_yocto_poky_meta_classes_kernel_yocto_bbclass(d)
0016:__anon_6__home_lichee_work_yocto_poky_meta_recipes_kernel_linux_linux_dtb_inc(d)
0017:__anon_148__home_lichee_work_yocto_meta_raspberrypi_recipes_kernel_linux_linux_rpi_inc(d)
*** 0018:__anon_39__home_lichee_work_yocto_meta_raspberrypi_recipes_kernel_linux_linux_raspberrypi_inc(d)
File: '/home/lichee/work/yocto/meta-raspberrypi/recipes-kernel/linux/linux-raspberrypi.inc', lineno: 37, function: __anon_39__home_lichee_work_yocto_meta_raspberrypi_recipes_kernel_linux_linux_raspberrypi_inc
0033:# Set programmatically some variables during recipe parsing
0034:# See http://www.yoctoproject.org/docs/current/bitbake-user-manual/bitbake-user-manual.html#anonymous-python-functions
0035:python __anonymous () {
0036: kerneltype = d.getVar('KERNEL_IMAGETYPE')
*** 0037: kerneldt = get_dts(d, d.getVar('LINUX_VERSION'))
0038: d.setVar("KERNEL_DEVICETREE", kerneldt)
0039:}
0040:
0041:do_kernel_configme_prepend() {
Exception: TypeError: getVar() missing 1 required positional argument: 'expand'
报错~然后发现我clone的yocto是morty版本的，但树梅派的bsp是master最新的，于是切回morty的版本。终于开始编译。
WARNING: Host distribution "Debian-9.0" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
Parsing recipes: 100% |#######################################################################################################################| Time: 0:02:24
Parsing of 884 .bb files complete (0 cached, 884 parsed). 1338 targets, 73 skipped, 0 masked, 0 errors.
NOTE: Resolving any missing task queue dependencies
Build Configuration:
BB_VERSION = "1.32.0"
BUILD_SYS = "i686-linux"
NATIVELSBSTRING = "Debian-9.0"
TARGET_SYS = "arm-poky-linux-gnueabi"
MACHINE = "raspberrypi"
DISTRO = "poky"
DISTRO_VERSION = "2.2.1"
TUNE_FEATURES = "arm armv6 vfp arm1176jzfs callconvention-hard"
TARGET_FPU = "hard"
meta
meta-poky
meta-yocto-bsp = "morty:6a1f33cc40bfac33cf030fe41e1a8efd1e5fad6f"
meta-raspberrypi = "HEAD:cce6292e41493158c26f5b1b7fded97faacf10d7"
其中下载了几个比较大的包，binutils，glibc，firmware，gcc，linux。都是自己下载然后放在download文件夹里面，下载方法是通过task manager打开show full command line，然后就可以看到url，用下载工具下载下来就行。然后把bitbake ctrl-c掉，删掉download中的两个文件，重起即可。
导入镜像
最终编译出来的文件位于tmp/deploy/images/raspberrypi2/，然后用dd写入sd卡，注意这个命令需要root，执行前要确认好/dev中sd卡的路径。可以通过插入sd卡后查看dmesg来获得。
dd if=tmp/deploy/images/raspberrypi2/rpi-basic-image-raspberrypi2.rpi-sdimg of=/dev/mmcblk0 bs=16M
接下来找个usb-ttl的串口转换，http://elinux.org/RPi_Serial_Connection这里有接线方法。
登陆用户名为root,密码空。
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 4.4.48 (lichee@lichee) (gcc version 6.2.0 (GCC) ) #1 Wed Mar 15 04:20:59 HKT 2017
[ 0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7), cr=00c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
[ 0.000000] Machine model: Raspberry Pi Model B Rev 2
[ 0.000000] cma: Reserved 8 MiB at 0x1b400000
[ 0.000000] Memory policy: Data cache writeback
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 113680
[ 0.000000] Kernel command line: dma.dmachans=0x7f35 bcm2708_fb.fbwidth=656 bcm2708_fb.fbheight=416 bcm2708.boardrev=0xd bcm2708.serial=0x80e4913 smsc95xt
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Memory: 436436K/458752K available (6090K kernel code, 437K rwdata, 1904K rodata, 372K init, 726K bss, 14124K reserved, 8192K cma-reserved)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xdc800000 - 0xff800000 ( 560 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xdc000000 ( 448 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .text : 0xc0008000 - 0xc07d6a00 (7995 kB)
[ 0.000000] .init : 0xc07d7000 - 0xc0834000 ( 372 kB)
[ 0.000000] .data : 0xc0834000 - 0xc08a1568 ( 438 kB)
[ 0.000000] .bss : 0xc08a1568 - 0xc09570b0 ( 727 kB)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000026] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every 2147483647500ns
[ 0.000067] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275 ns
[ 0.000164] bcm2835: system timer (irq = 27)
[ 0.000463] Console: colour dummy device 80x30
[ 0.000500] Calibrating delay loop... 697.95 BogoMIPS (lpj=3489792)
[ 0.060304] pid_max: default: 32768 minimum: 301
[ 0.060667] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.060694] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.061685] Disabling cpuset control group subsystem
[ 0.061734] Initializing cgroup subsys io
[ 0.061769] Initializing cgroup subsys memory
[ 0.061827] Initializing cgroup subsys devices
[ 0.061857] Initializing cgroup subsys freezer
[ 0.061885] Initializing cgroup subsys net_cls
[ 0.061967] CPU: Testing write buffer coherency: ok
[ 0.062041] ftrace: allocating 20550 entries in 61 pages
[ 0.174475] Setting up static identity map for 0x81c0 - 0x81f8
[ 0.176313] devtmpfs: initialized
[ 0.184898] VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5
[ 0.185446] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.187193] pinctrl core: initialized pinctrl subsystem
[ 0.188102] NET: Registered protocol family 16
[ 0.193746] DMA: preallocated 4096 KiB pool for atomic coherent allocations
[ 0.201740] hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.
[ 0.201769] hw-breakpoint: maximum watchpoint size is 4 bytes.
[ 0.201946] Serial: AMBA PL011 UART driver
[ 0.202354] 20201000.uart: ttyAMA0 at MMIO 0x20201000 (irq = 81, base_baud = 0) is a PL011 rev2
[ 0.555744] console [ttyAMA0] enabled
[ 0.560187] bcm2835-mbox 2000b880.mailbox: mailbox enabled
[ 0.609198] bcm2835-dma 20007000.dma: DMA legacy API manager at f2007000, dmachans=0x1
[ 0.618150] SCSI subsystem initialized
[ 0.622242] usbcore: registered new interface driver usbfs
[ 0.627927] usbcore: registered new interface driver hub
[ 0.633409] usbcore: registered new device driver usb
[ 0.648616] raspberrypi-firmware soc:firmware: Attached to firmware from 2016-11-25 16:03
[ 0.684358] clocksource: Switched to clocksource timer
[ 0.741629] FS-Cache: Loaded
[ 0.745027] CacheFiles: Loaded
[ 0.767230] NET: Registered protocol family 2
[ 0.772922] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.780157] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.786715] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.793286] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 0.799207] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 0.805910] NET: Registered protocol family 1
[ 0.810834] RPC: Registered named UNIX socket transport module.
[ 0.816849] RPC: Registered udp transport module.
[ 0.821562] RPC: Registered tcp transport module.
[ 0.826306] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.833903] hw perfevents: enabled with armv6_1176 PMU driver, 3 counters available
[ 0.843071] futex hash table entries: 256 (order: -1, 3072 bytes)
[ 0.865878] VFS: Disk quotas dquot_6.6.0
[ 0.870214] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.880033] FS-Cache: Netfs 'nfs' registered for caching
[ 0.886762] NFS: Registering the id_resolver key type
[ 0.891914] Key type id_resolver registered
[ 0.896228] Key type id_legacy registered
[ 0.904587] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
[ 0.912426] io scheduler noop registered
[ 0.916491] io scheduler deadline registered
[ 0.921185] io scheduler cfq registered (default)
[ 0.928635] BCM2708FB: allocated DMA memory 5b800000
[ 0.933669] BCM2708FB: allocated DMA channel 0 @ f2007000
[ 0.946755] Console: switching to colour frame buffer device 82x26
[ 2.053473] bcm2835-rng 20104000.rng: hwrng registered
[ 2.058928] vc-cma: Videocore CMA driver
[ 2.062865] vc-cma: vc_cma_base = 0x00000000
[ 2.067631] vc-cma: vc_cma_size = 0x00000000 (0 MiB)
[ 2.073037] vc-cma: vc_cma_initial = 0x00000000 (0 MiB)
[ 2.078892] vc-mem: phys_addr:0x00000000 mem_base=0x1ec00000 mem_size:0x20000000(512 MiB)
[ 2.112031] brd: module loaded
[ 2.127237] loop: module loaded
[ 2.131560] vchiq: vchiq_init_state: slot_zero = 0xdb880000, is_master = 0
[ 2.140918] Loading iSCSI transport class v2.0-870.
[ 2.147337] usbcore: registered new interface driver smsc95xx
[ 2.153358] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 2.359680] Core Release: 2.80a
[ 2.362847] Setting default values for core params
[ 2.367731] Finished setting default values for core params
[ 2.573651] Using Buffer DMA mode
[ 2.577020] Periodic Transfer Interrupt Enhancement - disabled
[ 2.582860] Multiprocessor Interrupt Enhancement - disabled
[ 2.588472] OTG VER PARAM: 0, OTG VER FLAG: 0
[ 2.592897] Dedicated Tx FIFOs mode
[ 2.597005] WARN::dwc_otg_hcd_init:1047: FIQ DMA bounce buffers: virt = 0xdb814000 dma = 0x5b814000 len=9024
[ 2.606929] FIQ FSM acceleration enabled for :
[ 2.606929] Non-periodic Split Transactions
[ 2.606929] Periodic Split Transactions
[ 2.606929] High-Speed Isochronous Endpoints
[ 2.606929] Interrupt/Control Split Transaction hack enabled
[ 2.629436] WARN::hcd_init_fiq:413: FIQ on core 0 at 0xc041040c
[ 2.635370] WARN::hcd_init_fiq:414: FIQ ASM at 0xc04106e8 length 36
[ 2.641658] WARN::hcd_init_fiq:439: MPHI regs_base at 0xdc898000
[ 2.647797] dwc_otg 20980000.usb: DWC OTG Controller
[ 2.652830] dwc_otg 20980000.usb: new USB bus registered, assigned bus number 1
[ 2.660259] dwc_otg 20980000.usb: irq 56, io mem 0x00000000
[ 2.665930] Init: Port Power? op_state=1
[ 2.669859] Init: Power Port (0)
[ 2.673490] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.680353] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.687629] usb usb1: Product: DWC OTG Controller
[ 2.692345] usb usb1: Manufacturer: Linux 4.4.48 dwc_otg_hcd
[ 2.698047] usb usb1: SerialNumber: 20980000.usb
[ 2.703888] hub 1-0:1.0: USB hub found
[ 2.707806] hub 1-0:1.0: 1 port detected
[ 2.713313] usbcore: registered new interface driver usb-storage
[ 2.719945] mousedev: PS/2 mouse device common for all mice
[ 2.726760] bcm2835-cpufreq: min=700000 max=700000
[ 2.731964] sdhci: Secure Digital Host Controller Interface driver
[ 2.738244] sdhci: Copyright(c) Pierre Ossman
[ 2.743201] sdhost: log_buf @ db813000 (5b813000)
[ 2.804623] mmc0: sdhost-bcm2835 loaded - DMA enabled (>1)
[ 2.810666] sdhci-pltfm: SDHCI platform and OF driver helper
[ 2.837293] ledtrig-cpu: registered to indicate activity on CPUs
[ 2.843491] hidraw: raw HID events driver (C) Jiri Kosina
[ 2.849310] usbcore: registered new interface driver usbhid
[ 2.854953] usbhid: USB HID core driver
[ 2.861165] Initializing XFRM netlink socket
[ 2.869030] NET: Registered protocol family 17
[ 2.873711] Key type dns_resolver registered
[ 2.886621] registered taskstats version 1
[ 2.891068] vc-sm: Videocore shared memory driver
[ 2.896043] [vc_sm_connected_init]: start
[ 2.901250] [vc_sm_connected_init]: end - returning 0
[ 2.906642] Indeed it is in host mode hprt0 = 00021501
[ 2.973624] of_cfs_init
[ 2.977382] of_cfs_init: OK
[ 2.981694] uart-pl011 20201000.uart: no DMA platform data
[ 2.988068] Waiting for root device /dev/mmcblk0p2...
[ 2.997992] mmc0: host does not support reading read-only switch, assuming write-enable
[ 3.008739] mmc0: new high speed SD card at address 0002
[ 3.015432] mmcblk0: mmc0:0002 00000 1.87 GiB
[ 3.024433] mmcblk0: p1 p2
[ 3.098064] EXT4-fs (mmcblk0p2): INFO: recovery required on readonly filesystem
[ 3.105516] EXT4-fs (mmcblk0p2): write access will be enabled during recovery
[ 3.112737] usb 1-1: new high-speed USB device number 2 using dwc_otg
[ 3.121039] Indeed it is in host mode hprt0 = 00001101
[ 3.273350] EXT4-fs (mmcblk0p2): recovery complete
[ 3.290068] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.298355] VFS: Mounted root (ext4 filesystem) readonly on device 179:2.
[ 3.307761] devtmpfs: mounted
[ 3.311985] Freeing unused kernel memory: 372K (c07d7000 - c0834000)
[ 3.324936] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
[ 3.331773] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3.340463] hub 1-1:1.0: USB hub found
[ 3.345491] hub 1-1:1.0: 3 ports detected
INIT: version 2.88 booting
[ 3.624473] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 3.745029] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[ 3.751936] usb 1-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3.776036] smsc95xx v1.0.4
[ 3.862668] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at usb-20980000.usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:0e:49:13
Starting udev
cmp: EOF on /etc/udev/cache.data
udev: Not using udev cache because of changes detected in the following files:
udev: /proc/version /proc/cmdline /proc/devices
udev: lib/udev/rules.d/* etc/udev/rules.d/*
udev: The udev cache will be regenerated. To identify the detected changes,
udev: compare the cached sysconf at /etc/udev/cache.data
udev: against the current sysconf at /dev/shm/udev.cache
[ 4.245846] udevd[105]: starting version 3.2
[ 4.315157] random: udevd: uninitialized urandom read (16 bytes read, 67 bits of entropy available)
[ 4.324982] random: udevd: uninitialized urandom read (16 bytes read, 67 bits of entropy available)
[ 4.334315] random: udevd: uninitialized urandom read (16 bytes read, 67 bits of entropy available)
[ 4.458251] udevd[106]: starting eudev-3.2
[ 4.946262] bcm2835-wdt 20100000.watchdog: Broadcom BCM2835 watchdog timer
[ 4.964267] gpiomem-bcm2835 20200000.gpiomem: Initialised: Registers at 0x20200000
[ 6.926859] EXT4-fs (mmcblk0p2): re-mounted. Opts: data=ordered
Populating dev cache
[ 8.149316] random: dd: uninitialized urandom read (512 bytes read, 76 bits of entropy available)
Tue Mar 14 21:08:02 UTC 2017
INIT: Entering runlevel: 5
Configuring network interfaces... [ 8.567800] smsc95xx 1-1.1:1.0 eth0: hardware isn't capable of remote wakeup
udhcpc (v1.24.1) started
Sending discover...
Sending discover...
Sending discover...
No lease, forking to background
done.
Starting syslogd/klogd: done
Poky (Yocto Project Reference Distro) 2.2.1 raspberrypi /dev/ttyAMA0
raspberrypi login: [ 19.676010] random: nonblocking pool is initialized
Poky (Yocto Project Reference Distro) 2.2.1 raspberrypi /dev/ttyAMA0
raspberrypi login: raspberry
Password:
Login incorrect
raspberrypi login: raspberrypi
Password:
Login incorrect
raspberrypi login: rot
Password:
Login incorrect
Poky (Yocto Project Reference Distro) 2.2.1 raspberrypi /dev/ttyAMA0
raspberrypi login: root
root@raspberrypi:~#
Reference:
Building Raspberry Pi Systems with Yocto
Build a Raspberry Pi 2 Minimal Image with The Yocto Project
内核设备树等拷贝到SD卡
如果上述dd方式不成功，或未找到生成的内核镜像，可能是实际生成了内核但没有转为树莓派识别的.img格式。
使用mkknlimg 工具，实际内核所在路径根据你编译输出位置确定
$ scripts/mkknlimg arch/arm/boot/zImage ../mnt/fat32/$KERNEL.img//将zImage格式转成树莓派需要的img格式，并复制到SD卡
参考博文：https://blog.csdn.net/u014695839/article/details/83720145
编译版本
bitbake rpi-basic-image