我是为嵌入式板构建自定义 Linux 操作系统的新手 - 所以请忽略我的无知。
我有一个名为 NanoPi NEO 的开发板，它具有定制的 Debian Linux。现在开发板附带一个 .img 文件，可以将其闪存到 SD 卡上并插入插槽，然后开发板从卡上启动。
现在我正在尝试构建自己的自定义 linux 并闪存到 SD 卡。我浏览了论坛和手册并设法做到了这一点。
问题
我知道自定义 linux 构建包含三个组件
- boot0 - 加载 BootLoader 的东西
- U-Boot - 众多引导加载程序之一。 (该项目使用此)。
- Rootfs - 文件系统和其他一切。
电路板制造商的网站提供了构建自定义操作系统的 these 说明。我按照这些说明做了所有事情，包括正确分区 SD 卡(前面有可用空间用于 boot0，带有 uImage 和 Script.bin 的引导分区，以及用于 rootfs 的分区)
问题是开发板会在启动时加载内核，但不会挂载文件系统并显示用户提示。
这是 Dmesg 输出。
HELLO! BOOT0 is starting!
boot0 version : 4.0.0
boot0 commit : 9d0a4ce0ba7756bc0de2e0efe7ec15900a4aa947
fel_flag = 0x00000000
rtc[0] value = 0x00000000
rtc[1] value = 0x00000000
rtc[2] value = 0x00000000
rtc[3] value = 0x00000000
rtc[4] value = 0x00000000
rtc[5] value = 0x00000000
rtc[6] value = 0x00000000
rtc[7] value = 0x00000000
DRAM DRIVE INFO: V1.3
the chip id is 0x00000081
the chip id is 0x00000081
the chip id is 0x00000081
the chip id is 0x00000081
the chip id is 0x00000081
READ DQS LCDL = 00242524
DRAM Type = 3 (2:DDR2,3:DDR3,6:LPDDR2,7:LPDDR3)
DRAM CLK = 576 MHz
DRAM zq value: 003b3bfb
DRAM dram para1: 10e20100
DRAM dram para2: 00000001
DRAM workmode1: 000009f4
DRAM SIZE =256 M
odt delay
dram size =256
card boot number = 0
card no is 0
sdcard 0 line count 4
[mmc]: mmc driver ver 2015-04-13 16:07:39
[mmc]: ***Try SD card 0***
[mmc]: SD/MMC Card: 4bit, capacity: 3812MB
[mmc]: vendor: Man 00845446 Snr 0000200b
[mmc]: product: SD[mmc]: revision: 0.0
[mmc]: ***SD/MMC 0 init OK!!!***
sdcard 0 init ok
The size of uboot is 000e4000.
sum=5b02f845
src_sum=5b02f845
Succeed in loading uboot from sdmmc flash.
Ready to disable icache.
Jump to secend Boot.
SUNXI_NORMAL_MODE
[ 0.380]e mode
U-Boot 2011.09-rc1-00000-g9d0a4ce-dirty (Aug 18 2016 - 15:53:02) Allwinner Technology
[ 0.390]version: 1.1.0
[ 0.392]uboot commit : 9d0a4ce0ba7756bc0de2e0efe7ec15900a4aa947
normal mode
[ 0.403]pmbus: ready
not set main pmu id
axp_probe error
gpio value=0x20000
[ 0.441]PMU: pll1 1008 Mhz,PLL6=600 Mhz
AXI=336 Mhz,AHB=200 Mhz, APB1=100 Mhz
sid read already
fel key new mode
run key detect
no key found
no key input
dram_para_set start
dram_para_set end
normal mode
[ 0.472]DRAM: 256 MiB
relocation Offset is: 05af2000
[box standby] read rtc = 0x0
[box_start_os] mag be start_type no use
user_gpio config
user_gpio ok
gic: normal or no secure os mode
workmode = 0
MMC: 0
[ 0.552][mmc]: mmc driver ver 2015-04-13 14:50:00
[ 0.557][mmc]: get sdc_phy_wipe fail.
[ 0.561][mmc]: get sdc0 sdc_erase fail.
[ 0.565][mmc]: get sdc_f_max fail,use default 50000000Hz
[ 0.570][mmc]: get sdc_ex_dly_used fail,use default dly
[ 0.576][mmc]: SUNXI SD/MMC: 0
[ 0.589][mmc]: *Try SD card 0*
[ 0.622][mmc]: CID 0x84544653 0x44000000 0x20 0xb01014f
[ 0.627][mmc]: mmc clk 50000000
[ 0.630][mmc]: SD/MMC Card: 4bit, capacity: 3812MB
[ 0.635][mmc]: boot0 capacity: 0KB,boot1 capacity: 0KB
[ 0.640][mmc]: ***SD/MMC 0 init OK!!!***
[ 0.645][mmc]: erase_grp_size:0x1WrBlk * 0x200 = 0x200 Byte
[ 0.651][mmc]: secure_feature 0x0
[ 0.654][mmc]: secure_removal_type 0x0
[ 0.658]sunxi flash init ok
script config pll_de to 864 Mhz
Not Found clk pll_video1 in script
script config pll_video to 297 Mhz
script config pll_periph0 to 600 Mhz
unable to find regulator vcc-hdmi-18 from [pmu1_regu] or [pmu2_regu]
enable power vcc-hdmi-18, ret=-1
DRV_DISP_Init end
[disk_read_fs] no the partition
error: open tv_vdid.fex, maybe it is not exist
[disk_read_fs] no the partition
error: open disp_rsl.fex, maybe it is not exist
[disk_read_fs] no the partition
error: open disp_rsl.fex, maybe it is not exist
boot_disp.auto_hpd=1
auto hpd check has 100 times!
auto check no any connected, the output_type is 4
[ 2.032]finally, output_type=0x4, output_mode=0x4, screen_id=0x0, disp_para=0x0
try to read logic blk 0 without env partition
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
--------fastboot partitions--------
mbr not exist
base bootcmd=run setargs_mmc boot_normal
bootcmd set setargs_mmc
key 0
cant find rcvy value
cant find fstbt value
no misc partition is found
to be run cmd=run setargs_mmc boot_normal
[ 2.080][mmc]: MMC Device 2 not found
[ 2.084][mmc]: Can not find mmc dev
[ 2.087][mmc]: read first backup failed in fun sdmmc_secure_storage_read line 1854
sunxi_secstorage_read fail
get secure storage map err
check user data form private
the private part isn't exist
WORK_MODE_BOOT
adver not need show
sunxi_bmp_logo_display
[disk_read_fs] no the partition
error: open bootlogo.bmp, maybe it is not exist
sunxi bmp info error : unable to open logo file bootlogo.bmp
[ 2.123]Hit any key to stop autoboot: 0
[ 4.300][mmc]: blkcnt should not be 0
## Booting kernel from Legacy Image at 40007800 ...
Image Name: Linux-3.4.39-h3
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 4522784 Bytes = 4.3 MiB
Load Address: 40008000
Entry Point: 40008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
[ 4.603][mmc]: MMC Device 2 not found
[ 4.607][mmc]: mmc not find,so not exit
[ 4.611]
Starting kernel ...
[sun8i_fixup]: From boot, get meminfo:
Start: 0x40000000
Size: 256MB
ion_carveout reserve: 160m@0 256m@0 130m@1 200m@1
ion_reserve_select: ion chipid [0x2c00081!
ion_reserve_common: ion reserve: [0x46000000, 0x50000000]!
[ 0.000000] Booting Linux on physical CPU 0
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 3.4.39-h3 (azmath@azPC) (gcc version 4.6.3 20120201 (prerelease) (crosstool-NG linaro-1.13.1-2012.02-20120222 - Linaro GCC 2012.02) ) #1 SMP PREEMPT Thu Aug 18 15:52:21 IST 2016
[ 0.000000] cma: CMA: reserved 160 MiB at 46000000
[ 0.000000] PERCPU: Embedded 8 pages/cpu @c0c91000 s11840 r8192 d12736 u32768
[ 0.000000] Kernel command line: console=ttyS0,115200 console=tty0 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait init=/sbin/init
[ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[ 0.000000] allocated 524288 bytes of page_cgroup
[ 0.000000] please try 'cgroup_disable=memory' option if you don't want memory cgroups
[ 0.000000] Memory: 256MB = 256MB total
[ 0.000000] Memory: 84012k/84012k available, 178132k reserved, 0K highmem
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xd0800000 - 0xff000000 ( 744 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xd0000000 ( 256 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc089dfd4 (8792 kB)
[ 0.000000] .init : 0xc089e000 - 0xc08eee40 ( 324 kB)
[ 0.000000] .data : 0xc08f0000 - 0xc096a878 ( 491 kB)
[ 0.000000] .bss : 0xc096b02c - 0xc0a3fc88 ( 852 kB)
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] Additional per-CPU info printed with stalls.
[ 0.000000] NR_IRQS:544
[ 0.000000] Architected local timer running at 24.00MHz.
[ 0.000000] Switching to timer-based delay loop
[ 0.000000] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 178956ms
[ 0.000000] Console: colour dummy device 80x30
[ 0.000000] console [tty0] enabled
[ 0.001029] Calibrating delay loop (skipped), value calculated using timer frequency.. 4800.00 BogoMIPS (lpj=24000000)
[ 0.001097] pid_max: default: 32768 minimum: 301
[ 0.001458] Mount-cache hash table entries: 512
[ 0.002521] Initializing cgroup subsys cpuacct
[ 0.002561] Initializing cgroup subsys memory
[ 0.002631] Initializing cgroup subsys devices
[ 0.002663] Initializing cgroup subsys freezer
[ 0.002692] Initializing cgroup subsys blkio
[ 0.002736] Initializing cgroup subsys perf_event
[ 0.002813] CPU: Testing write buffer coherency: ok
[ 0.002890] ftrace: allocating 24150 entries in 71 pages
[ 0.030315] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.030365] [sunxi_smp_prepare_cpus] enter
[ 0.030417] Setting up static identity map for 0x4061f8e0 - 0x4061f938
[ 0.031457] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.031592] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[ 0.031592] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[ 0.040210] Brought up 4 CPUs
[ 0.040292] SMP: Total of 4 processors activated (19200.00 BogoMIPS).
[ 0.041034] devtmpfs: initialized
[ 0.043817] wakeup src cnt is : 2.
[ 0.043914] sunxi pm init
[ 0.044064] pinctrl core: initialized pinctrl subsystem
[ 0.054192] NET: Registered protocol family 16
[ 0.054986] DMA: preallocated 2048 KiB pool for atomic coherent allocations
[ 0.054986] script_sysfs_init success
[ 0.054986] gpiochip_add: registered GPIOs 0 to 383 on device: sunxi-pinctrl
[ 0.054986] sunxi-pinctrl sunxi-pinctrl: initialized sunXi PIO driver
[ 0.054986] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.054986] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.055148] script config pll_video to 297 Mhz
[ 0.055180] script config pll_de to 864 Mhz
[ 0.055205] script config pll_ve to 402 Mhz
[ 0.061950] bio: create slab <bio-0> at 0
[ 0.061950] [ARISC] :sunxi-arisc driver v1.04
[ 0.076943] [ARISC] :arisc version: [v0.1.58]
[ 0.163654] [ARISC] :sunxi-arisc driver v1.04 startup succeeded
[ 0.163781] pwm module init!
[ 0.171646] SCSI subsystem initialized
[ 0.171646] usbcore: registered new interface driver usbfs
[ 0.171646] usbcore: registered new interface driver hub
[ 0.171646] usbcore: registered new device driver usb
[ 0.171646] twi_chan_cfg()340 - [twi0] has no twi_regulator.
[ 0.171646] twi_chan_cfg()340 - [twi1] has no twi_regulator.
[ 0.171646] twi_chan_cfg()340 - [twi2] has no twi_regulator.
[ 0.171646] Linux video capture interface: v2.00
[ 0.171718] Advanced Linux Sound Architecture Driver Version 1.0.25.
[ 0.172304] Bluetooth: Core ver 2.16
[ 0.172369] NET: Registered protocol family 31
[ 0.172393] Bluetooth: HCI device and connection manager initialized
[ 0.172422] Bluetooth: HCI socket layer initialized
[ 0.172445] Bluetooth: L2CAP socket layer initialized
[ 0.172479] Bluetooth: SCO socket layer initialized
[ 0.172586] Switching to clocksource arch_sys_counter
[ 0.183438] FS-Cache: Loaded
[ 0.183767] CacheFiles: Loaded
[ 0.195670] NET: Registered protocol family 2
[ 0.195984] IP route cache hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.196546] TCP established hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.196714] TCP bind hash table entries: 8192 (order: 4, 98304 bytes)
[ 0.196858] TCP: Hash tables configured (established 8192 bind 8192)
[ 0.196886] TCP: reno registered
[ 0.196908] UDP hash table entries: 128 (order: 0, 4096 bytes)
[ 0.196953] UDP-Lite hash table entries: 128 (order: 0, 4096 bytes)
[ 0.197265] NET: Registered protocol family 1
[ 0.197667] RPC: Registered named UNIX socket transport module.
[ 0.197701] RPC: Registered udp transport module.
[ 0.197722] RPC: Registered tcp transport module.
[ 0.197743] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.198224] hw perfevents: enabled with ARMv7 Cortex_A7 PMU driver, 5 counters available
[ 0.198362] sunxi_reg_init enter
[ 0.199096] audit: initializing netlink socket (disabled)
[ 0.199161] type=2000 audit(0.190:1): initialized
[ 0.201581] NTFS driver 2.1.30 [Flags: R/W].
[ 0.201895] fuse init (API version 7.18)
[ 0.202256] msgmni has been set to 484
[ 0.203709] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[ 0.203759] io scheduler noop registered
[ 0.203779] io scheduler deadline registered
[ 0.203851] io scheduler cfq registered (default)
[ 0.204325] [DISP]disp_module_init
[ 0.204656] cmdline,init_disp=
[ 0.204696] cmdline,disp=
[ 0.214840] [DISP] Fb_map_kernel_logo,line:926:Fb_map_kernel_logo failed!
[ 0.230039] Console: switching to colour frame buffer device 160x45
[ 0.246402] [DISP]disp_module_init finish
[ 0.246750] sw_uart_get_devinfo()1503 - uart0 has no uart_regulator.
[ 0.246930] sw_uart_get_devinfo()1503 - uart1 has no uart_regulator.
[ 0.247103] sw_uart_get_devinfo()1503 - uart2 has no uart_regulator.
[ 0.247276] sw_uart_get_devinfo()1503 - uart3 has no uart_regulator.
[ 0.248031] uart0: ttyS0 at MMIO 0x1c28000 (irq = 32) is a SUNXI
[ 0.248209] sw_uart_pm()890 - uart0 clk is already enable
[ 0.248364] sw_console_setup()1233 - console setup baud 115200 parity n bits 8, flow n
[ 0.360189] console [ttyS0] enabled
[ 0.530429] uart1: ttyS1 at MMIO 0x1c28400 (irq = 33) is a SUNXI
[ 0.530691] uart2: ttyS2 at MMIO 0x1c28800 (irq = 34) is a SUNXI
[ 0.530955] uart3: ttyS3 at MMIO 0x1c28c00 (irq = 35) is a SUNXI
[ 0.531802] [drm] Initialized drm 1.1.0 20060810
[ 0.535869] loop: module loaded
[ 0.659319] sunxi_spi_chan_cfg()1383 - [spi-0] has no spi_regulator.
[ 0.840684] sunxi_spi_chan_cfg()1383 - [spi-1] has no spi_regulator.
[ 0.965661] spi spi0: master is unqueued, this is deprecated
[ 1.150380] tun: Universal TUN/TAP device driver, 1.6
[ 1.150388] tun: (C) 1999-2004 Max Krasnyansky <maxk@qualcomm.com>
[ 1.151363] PPP generic driver version 2.4.2
[ 1.151552] PPP BSD Compression module registered
[ 1.151560] PPP Deflate Compression module registered
[ 1.152440] PPP MPPE Compression module registered
[ 1.152451] NET: Registered protocol family 24
[ 1.152493] PPTP driver version 0.8.5
[ 1.152743] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.172877] sunxi-ehci sunxi-ehci.1: SW USB2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.172912] sunxi-ehci sunxi-ehci.1: new USB bus registered, assigned bus number 1
[ 1.296094] sunxi-ehci sunxi-ehci.1: irq 104, io mem 0xf1c1a000
[ 1.480038] sunxi-ehci sunxi-ehci.1: USB 0.0 started, EHCI 1.00
[ 1.632720] hub 1-0:1.0: USB hub found
[ 1.685669] hub 1-0:1.0: 1 port detected
[ 1.714667] sunxi-ehci sunxi-ehci.2: SW USB2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.727974] sunxi-ehci sunxi-ehci.2: new USB bus registered, assigned bus number 2
[ 1.741191] sunxi-ehci sunxi-ehci.2: irq 106, io mem 0xf1c1b000
[ 1.770036] sunxi-ehci sunxi-ehci.2: USB 0.0 started, EHCI 1.00
[ 1.781512] hub 2-0:1.0: USB hub found
[ 1.789904] hub 2-0:1.0: 1 port detected
[ 1.818952] sunxi-ehci sunxi-ehci.3: SW USB2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.832323] sunxi-ehci sunxi-ehci.3: new USB bus registered, assigned bus number 3
[ 1.845590] sunxi-ehci sunxi-ehci.3: irq 108, io mem 0xf1c1c000
[ 1.870043] sunxi-ehci sunxi-ehci.3: USB 0.0 started, EHCI 1.00
[ 1.881664] hub 3-0:1.0: USB hub found
[ 1.890302] hub 3-0:1.0: 1 port detected
[ 1.919344] sunxi-ehci sunxi-ehci.4: SW USB2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.932740] sunxi-ehci sunxi-ehci.4: new USB bus registered, assigned bus number 4
[ 1.945967] sunxi-ehci sunxi-ehci.4: irq 110, io mem 0xf1c1d000
[ 1.970042] sunxi-ehci sunxi-ehci.4: USB 0.0 started, EHCI 1.00
[ 1.981680] hub 4-0:1.0: USB hub found
[ 1.990489] hub 4-0:1.0: 1 port detected
[ 1.999718] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 2.031228] sunxi-ohci sunxi-ohci.1: SW USB2.0 'Open' Host Controller (OHCI) Driver
[ 2.044385] sunxi-ohci sunxi-ohci.1: new USB bus registered, assigned bus number 5
[ 2.057397] sunxi-ohci sunxi-ohci.1: irq 105, io mem 0xf1c1a400
[ 2.124576] hub 5-0:1.0: USB hub found
[ 2.133311] hub 5-0:1.0: 1 port detected
[ 2.162621] sunxi-ohci sunxi-ohci.2: SW USB2.0 'Open' Host Controller (OHCI) Driver
[ 2.175860] sunxi-ohci sunxi-ohci.2: new USB bus registered, assigned bus number 6
[ 2.189035] sunxi-ohci sunxi-ohci.2: irq 107, io mem 0xf1c1b400
[ 2.264561] hub 6-0:1.0: USB hub found
[ 2.273445] hub 6-0:1.0: 1 port detected
[ 2.302798] sunxi-ohci sunxi-ohci.3: SW USB2.0 'Open' Host Controller (OHCI) Driver
[ 2.316105] sunxi-ohci sunxi-ohci.3: new USB bus registered, assigned bus number 7
[ 2.329298] sunxi-ohci sunxi-ohci.3: irq 109, io mem 0xf1c1c400
[ 2.404584] hub 7-0:1.0: USB hub found
[ 2.413449] hub 7-0:1.0: 1 port detected
[ 2.442827] sunxi-ohci sunxi-ohci.4: SW USB2.0 'Open' Host Controller (OHCI) Driver
[ 2.456174] sunxi-ohci sunxi-ohci.4: new USB bus registered, assigned bus number 8
[ 2.469459] sunxi-ohci sunxi-ohci.4: irq 111, io mem 0xf1c1d400
[ 2.544586] hub 8-0:1.0: USB hub found
[ 2.553518] hub 8-0:1.0: 1 port detected
[ 2.562915] Initializing USB Mass Storage driver...
[ 2.573211] usbcore: registered new interface driver usb-storage
[ 2.584572] USB Mass Storage support registered.
[ 2.594457] usbcore: registered new interface driver ums-alauda
[ 2.605819] usbcore: registered new interface driver ums-cypress
[ 2.617280] usbcore: registered new interface driver ums-datafab
[ 2.628608] usbcore: registered new interface driver ums_eneub6250
[ 2.640060] usbcore: registered new interface driver ums-freecom
[ 2.651238] usbcore: registered new interface driver ums-isd200
[ 2.662342] usbcore: registered new interface driver ums-jumpshot
[ 2.673509] usbcore: registered new interface driver ums-karma
[ 2.684357] usbcore: registered new interface driver ums-onetouch
[ 2.695402] usbcore: registered new interface driver ums-realtek
[ 2.706252] usbcore: registered new interface driver ums-sddr09
[ 2.716948] usbcore: registered new interface driver ums-sddr55
[ 2.727582] usbcore: registered new interface driver ums-usbat
[ 2.738113] usbcore: registered new interface driver usbserial
[ 2.748503] usbserial: USB Serial Driver core
[ 2.757202] usbcore: registered new interface driver option
[ 2.767257] USB Serial support registered for GSM modem (1-port)
[ 2.778459] file system registered
[ 2.787739] android_usb gadget: Mass Storage Function, version: 2009/09/11
[ 2.799369] android_usb gadget: Number of LUNs=3
[ 2.808438] lun0: LUN: removable file: (no medium)
[ 2.817768] lun1: LUN: removable file: (no medium)
[ 2.826963] lun2: LUN: removable file: (no medium)
[ 2.836406] android_usb gadget: android_usb ready
[ 2.846187] mousedev: PS/2 mouse device common for all mice
[ 2.857107] ls_fetch_sysconfig_para: ls_unused.
[ 2.866277] [RTC] WARNING: Rtc time will be wrong!!
[ 2.875373] [RTC] WARNING: use *internal OSC* as clock source
[ 2.885690] sunxi-rtc sunxi-rtc: rtc core: registered sunxi-rtc as rtc0
[ 2.896812] i2c /dev entries driver
[ 2.904919] IR RC5(x) protocol handler initialized
[ 2.914167] tscdev_init: tsc driver is disabled
[ 2.923307] Driver for 1-wire Dallas network protocol.
[ 2.932808] sunxi_wdt_init_module: sunxi WatchDog Timer Driver v1.0
[ 2.943662] sunxi_wdt_probe: devm_ioremap return wdt_reg 0xf1c20ca0, res->start 0x01c20ca0, res->end 0x01c20cbf
[ 2.955143] sunxi_wdt_probe: initialized (g_timeout=16s, g_nowayout=0)
[ 2.970118] wdt_enable, write reg 0xf1c20cb8 val 0x00000000
[ 2.980326] timeout_to_interv, line 167
[ 2.988404] interv_to_timeout, line 189
[ 2.996449] wdt_set_tmout, write 0x000000b0 to mode reg 0xf1c20cb8, actual timeout 16 sec
[ 3.009669] device-mapper: uevent: version 1.0.3
[ 3.019024] device-mapper: ioctl: 4.22.0-ioctl (2011-10-19) initialised: dm-devel@redhat.com
[ 3.032580] Bluetooth: HCI UART driver ver 2.2
[ 3.041598] Bluetooth: HCI H4 protocol initialized
[ 3.050941] Bluetooth: HCI BCSP protocol initialized
[ 3.060436] Bluetooth: HCILL protocol initialized
[ 3.069638] Bluetooth: HCIATH3K protocol initialized
[ 3.079317] Bluetooth: MSM Sleep Mode Driver Ver 1.2
[ 3.088976] Bluetooth: init no bt used in configuration
[ 3.088982]
[ 3.104775] [cpu_freq] ERR:get cpu extremity frequency from sysconfig failed, use max_freq
[ 3.120910] no red_led, ignore it!
[ 3.131197] usbcore: registered new interface driver usbhid
[ 3.141947] usbhid: USB HID core driver
[ 3.152119] script_get_item audio_pa_ctrl not found
[ 3.167806] asoc: sndcodec <-> sunxi-codec mapping ok
[ 3.183410] asoc: sndhdmi <-> sunxi-hdmiaudio.0 mapping ok
[ 3.195521] oprofile: using arm/armv7-ca7
[ 3.205005] u32 classifier
[ 3.212837] Actions configured
[ 3.220990] Netfilter messages via NETLINK v0.30.
[ 3.230635] nf_conntrack version 0.5.0 (3872 buckets, 15488 max)
[ 3.242335] ctnetlink v0.93: registering with nfnetlink.
[ 3.252669] NF_TPROXY: Transparent proxy support initialized, version 4.1.0
[ 3.264844] NF_TPROXY: Copyright (c) 2006-2007 BalaBit IT Ltd.
[ 3.275528] mmc0: new SDHC card at address 0001
[ 3.275741] xt_time: kernel timezone is -0000
[ 3.275908] IPv4 over IPv4 tunneling driver
[ 3.276373] gre: GRE over IPv4 demultiplexor driver
[ 3.276382] ip_gre: GRE over IPv4 tunneling driver
[ 3.277016] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 3.277210] arp_tables: (C) 2002 David S. Miller
[ 3.277287] TCP: cubic registered
[ 3.277294] Initializing XFRM netlink socket
[ 3.357187] NET: Registered protocol family 10
[ 3.366318] mmcblk0: mmc0:0001 SD 3.72 GiB
[ 3.375839] Mobile IPv6
[ 3.382646] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 3.382684] mmcblk0: p1 p2
[ 3.383449] *******************sd init ok*******************
[ 3.409962] IPv6 over IPv4 tunneling driver
[ 3.419556] NET: Registered protocol family 17
[ 3.428376] NET: Registered protocol family 15
[ 3.437283] Bluetooth: RFCOMM TTY layer initialized
[ 3.446478] Bluetooth: RFCOMM socket layer initialized
[ 3.455844] Bluetooth: RFCOMM ver 1.11
[ 3.463574] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 3.473004] Bluetooth: BNEP filters: protocol multicast
[ 3.482329] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 3.492549] L2TP core driver, V2.0
[ 3.499872] PPPoL2TP kernel driver, V2.0
[ 3.507783] L2TP IP encapsulation support (L2TPv3)
[ 3.516771] L2TP netlink interface
[ 3.524201] L2TP ethernet pseudowire support (L2TPv3)
[ 3.533588] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[ 3.545743] ThumbEE CPU extension supported.
[ 3.554047] Registering SWP/SWPB emulation handler
[ 3.563802] cmdline,disp=
[ 3.601355] sunxi-rtc sunxi-rtc: setting system clock to 1970-01-01 00:00:08 UTC (8)
[ 3.613650] ths_fetch_sysconfig_para: type err device_used = 1.
[ 3.625339] CPU Budget:Register notifier
[ 3.633378] CPU Budget:register Success
[ 3.641218] sunxi-budget-cooling sunxi-budget-cooling: Cooling device registered: thermal-budget-0
[ 3.657864] ALSA device list:
[ 3.664997] #0: audiocodec
[ 3.671931] #1: sndhdmi
[ 3.701347] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.714240] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 3.725065] Freeing init memory: 320K
[ 4.210107] [DISP] disp_device_attached_and_enable,line:159:attched ok, mgr0<-->device0, type=4, mode=5
我已经与他们提供的图像的 Dmesg 进行了比较，它是相同的(没有额外的错误)。唯一的区别是它不会在最后一条消息和上面的消息处停止，而是继续显示更多这样的消息
[ 3.740859] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 3.751773] Freeing init memory: 320K
[ 3.994008] systemd[1]: Failed to insert module 'kdbus': Function not implemented
[ 4.480527] systemd[1]: systemd 225 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID -ELFUTILS +KMOD -IDN)
[ 4.522559] systemd[1]: Detected architecture arm.
[ 4.556652] systemd[1]: Set hostname to <FriendlyARM>.
[ 4.813095] systemd[1]: display-manager.service: Cannot add dependency job, ignoring: Unit display-manager.service failed to load: No such file or directory.
[ 4.835364] systemd[1]: Reached target Swap.
[ 4.849758] systemd[1]: Reached target Encrypted Volumes.
[ 4.865289] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[ 4.883786] systemd[1]: Reached target Remote File Systems (Pre).
[ 4.900430] systemd[1]: Created slice Root Slice.
[ 4.915916] systemd[1]: Created slice System Slice.
[ 4.931753] systemd[1]: Created slice User and Session Slice.
[ 4.948846] systemd[1]: Created slice system-getty.slice.
[ 4.965667] systemd[1]: Created slice system-serial\x2dgetty.slice.
[ 4.983471] systemd[1]: Listening on udev Control Socket.
[ 5.000354] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[ 5.019741] systemd[1]: Reached target Paths.
[ 5.035599] systemd[1]: Listening on Journal Socket.
[ 5.200617] systemd[1]: Mounting Debug File System...
[ 5.290705] systemd[1]: Starting Remount Root and Kernel File Systems...
[ 5.390688] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[ 5.415235] systemd[1]: Listening on Journal Audit Socket.
[ 5.434841] systemd[1]: Reached target Slices.
[ 5.453278] systemd[1]: Listening on udev Kernel Socket.
[ 5.580939] systemd[1]: Starting udev Coldplug all Devices...
[ 5.608874] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[ 5.770898] systemd[1]: Starting Load Kernel Modules...
[ 5.789989] systemd[1]: Listening on Journal Socket (/dev/log).
[ 5.890778] systemd[1]: Starting Journal Service...
[ 6.027527] systemd[1]: Mounted Debug File System.
[ 6.160197] systemd[1]: Started Remount Root and Kernel File Systems.
[ 6.330140] systemd[1]: Started Create list of required static device nodes for the current kernel.
[ 6.750244] systemd[1]: Started Load Kernel Modules.
[ 6.920156] systemd[1]: Started udev Coldplug all Devices.
[ 6.942933] systemd[1]: Started Journal Service.
所以我猜问题出在 rootfs 没有被正确检测和安装。请指导我。
最佳答案
我很确定问题是 linux 没有激活 uart 上的控制台。
查看内核日志:
[0.000000] 内核命令行:console=ttyS0,115200 console=tty0 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait init=/sbin/init
如 http://www.tldp.org/HOWTO/Remote-Serial-Console-HOWTO/configure-kernel.html 中所述:
When multiple consoles are listed output is sent to all consoles and input is taken from the last listed console. The last console is the one Linux uses as the /dev/console device.
因此尝试通过调整 bootargs u-boot 环境变量使 console=ttyS0,115200 成为最后(或唯一)console 选项.
要检查此建议，只需“按任意键停止自动启动”，然后使用 printenv 检查默认 bootargs 内容，运行 setenv bootargs ... ... ... 最后，运行 bootd。但是，请务必检查 bootcmd 及其调用的内容，因为其中一个可能会在 bootcmd 执行期间调用 setenv bootargs 并覆盖您的手册选项。
附言init=/sbin/init 可以省略。
关于linux - 在 NanoPi Neo 开发板上定制 Linux，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/39016872/