如题，在H3上linux启动后一直卡在 Waiting for root device /dev/mmcblk0p2... 下面是日志：
U-Boot SPL 2017.11-g73e3bbb (Jan 28 2021 - 20:48:09)
DRAM: 512 MiB(408MHz)
CPU Freq: 408MHz
memory test: 1
Pattern 55aa Writing...Reading...OK
Trying to boot from MMC1
Boot device: sd
U-Boot 2017.11-g73e3bbb (Jan 28 2021 - 20:48:09 +0800) Allwinner Technology
CPU: Allwinner H3 (SUN8I 1680)
Model: FriendlyElec NanoPi H3
DRAM: 512 MiB
CPU Freq: 1008MHz
MMC: SUNXI SD/MMC: 0, SUNXI SD/MMC: 1
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: No ethernet found.
BOARD: nanopi-m1-plus
starting USB...
No controllers found
Hit any key to stop autoboot: 0
reading boot.scr
1947 bytes read in 31 ms (60.5 KiB/s)
## Executing script at 43100000
reading zImage
5845760 bytes read in 304 ms (18.3 MiB/s)
reading sun8i-h3-nanopi-neo-core.dtb
34556 bytes read in 29 ms (1.1 MiB/s)
## Flattened Device Tree blob at 48000000
Booting using the fdt blob at 0x48000000
Loading Device Tree to 49ff4000, end 49fff6fb ... OK
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.14.111 (spaceman@spaceman) (gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)) #1 SMP Thu Jan 28 21:05:20 CST 2021
[ 0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=30c5387d
[ 0.000000] CPU: div instructions available: patching division code
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] OF: fdt: Machine model: FriendlyElec NanoPi-NEO-Core
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] Reserved memory: created CMA memory pool at 0x000000005c000000, size 64 MiB
[ 0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[ 0.000000] percpu: Embedded 17 pages/cpu @dbafc000 s37068 r8192 d24372 u69632
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 129920
[ 0.000000] Kernel command line: console=ttyS0,115200 panic=5 rootwait root=/dev/mmcblk0p2 rootfstype=ext4 earlyprintk rw
[ 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: 436060K/524288K available (10240K kernel code, 391K rwdata, 2080K rodata, 2048K init, 302K bss, 22692K reserved, 65536K cma-reserved, 0K highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xe0800000 - 0xff800000 ( 496 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0c00000 (12256 kB)
[ 0.000000] .init : 0xc1000000 - 0xc1200000 (2048 kB)
[ 0.000000] .data : 0xc1200000 - 0xc1261dc0 ( 392 kB)
[ 0.000000] .bss : 0xc126a7a0 - 0xc12b60f8 ( 303 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000000] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[ 0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (virt).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[ 0.000006] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[ 0.000017] Switching to timer-based delay loop, resolution 41ns
[ 0.000217] Console: colour dummy device 80x30
[ 0.000253] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=120000)
[ 0.000266] pid_max: default: 32768 minimum: 301
[ 0.000420] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000432] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.001161] CPU: Testing write buffer coherency: ok
[ 0.001607] CPU0: update cpu_capacity 1024
[ 0.001620] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.001991] Setting up static identity map for 0x40200000 - 0x40200060
[ 0.002121] Hierarchical SRCU implementation.
[ 0.002674] smp: Bringing up secondary CPUs ...
[ 0.003940] smp: Brought up 1 node, 1 CPU
[ 0.003955] SMP: Total of 1 processors activated (48.00 BogoMIPS).
[ 0.003962] CPU: All CPU(s) started in SVC mode.
[ 0.004596] devtmpfs: initialized
[ 0.011246] random: get_random_u32 called from bucket_table_alloc+0xfc/0x228 with crng_init=0
[ 0.011700] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[ 0.011986] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 9556302231375000 ns
[ 0.012010] futex hash table entries: 1024 (order: 4, 65536 bytes)
[ 0.014602] xor: measuring software checksum speed
[ 0.060130] arm4regs : 1263.200 MB/sec
[ 0.110178] 8regs : 877.600 MB/sec
[ 0.160228] 32regs : 808.800 MB/sec
[ 0.210274] neon : 1284.000 MB/sec
[ 0.210282] xor: using function: neon (1284.000 MB/sec)
[ 0.210303] pinctrl core: initialized pinctrl subsystem
[ 0.211334] NET: Registered protocol family 16
[ 0.212648] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.213389] cpuidle: using governor ladder
[ 0.213402] cpuidle: using governor menu
[ 0.213633] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.213642] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.232598] SCSI subsystem initialized
[ 0.233057] usbcore: registered new interface driver usbfs
[ 0.233102] usbcore: registered new interface driver hub
[ 0.233160] usbcore: registered new device driver usb
[ 0.233328] media: Linux media interface: v0.10
[ 0.233371] Linux video capture interface: v2.00
[ 0.233469] pps_core: LinuxPPS API ver. 1 registered
[ 0.233476] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.233494] PTP clock support registered
[ 0.233838] Advanced Linux Sound Architecture Driver Initialized.
[ 0.235301] clocksource: Switched to clocksource arch_sys_counter
[ 0.235591] VFS: Disk quotas dquot_6.6.0
[ 0.235665] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.235818] FS-Cache: Loaded
[ 0.242759] NET: Registered protocol family 2
[ 0.243397] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.243442] TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.243505] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.243613] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.243655] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.243853] NET: Registered protocol family 1
[ 0.244319] RPC: Registered named UNIX socket transport module.
[ 0.244331] RPC: Registered udp transport module.
[ 0.244336] RPC: Registered tcp transport module.
[ 0.244342] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.244782] kvm [1]: HYP mode not available
[ 0.247495] workingset: timestamp_bits=14 max_order=17 bucket_order=3
[ 0.252064] zbud: loaded
[ 0.253692] FS-Cache: Netfs 'nfs' registered for caching
[ 0.254228] NFS: Registering the id_resolver key type
[ 0.254271] Key type id_resolver registered
[ 0.254278] Key type id_legacy registered
[ 0.254301] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 0.254318] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[ 0.255229] fuse init (API version 7.26)
[ 0.261410] async_tx: api initialized (async)
[ 0.261520] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 246)
[ 0.261797] io scheduler noop registered (default)
[ 0.261809] io scheduler deadline registered
[ 0.262003] io scheduler cfq registered
[ 0.262013] io scheduler mq-deadline registered
[ 0.262155] io scheduler bfq registered
[ 0.262797] sun4i-usb-phy 1c19400.phy: Couldn't request ID GPIO, pinctrl may not init
[ 0.266651] sun8i-h3-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[ 0.268175] sun8i-h3-r-pinctrl 1f02c00.pinctrl: initialized sunXi PIO driver
[ 0.274036] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[ 0.276038] console [ttyS0] disabled
[ 0.296248] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 45, base_baud = 1500000) is a U6_16550A
[ 0.986502] console [ttyS0] enabled
[ 1.012695] 1c28400.serial: ttyS1 at MMIO 0x1c28400 (irq = 46, base_baud = 1500000) is a U6_16550A
[ 1.044296] 1c28800.serial: ttyS2 at MMIO 0x1c28800 (irq = 47, base_baud = 1500000) is a U6_16550A
[ 1.075888] 1c28c00.serial: ttyS3 at MMIO 0x1c28c00 (irq = 48, base_baud = 1500000) is a U6_16550A
[ 1.087091] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 1.093753] [drm] No driver support for vblank timestamp query.
[ 1.109121] sun4i-drm display-engine: bound 1100000.mixer (ops 0xc0c51bb8)
[ 1.116206] sun4i-drm display-engine: No panel or bridge found... RGB output disabled
[ 1.124052] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc0c508bc)
[ 1.255383] sun8i-dw-hdmi 1ee0000.hdmi: Detected HDMI TX controller v1.32a with HDCP (sun8i_dw_hdmi_phy)
[ 1.265315] sun8i-dw-hdmi 1ee0000.hdmi: registered DesignWare HDMI I2C bus driver
[ 1.273031] sun4i-drm display-engine: bound 1ee0000.hdmi (ops 0xc0c51f38)
[ 1.279883] [drm] Cannot find any crtc or sizes - going 1920x1080
[ 1.327112] Console: switching to colour frame buffer device 240x67
[ 1.357639] sun4i-drm display-engine: fb0: frame buffer device
[ 1.363960] [drm] Initialized sun4i-drm 1.0.0 20150629 for display-engine on minor 0
[ 1.380944] loop: module loaded
[ 1.400429] st: Version 20160209, fixed bufsize 32768, s/g segs 256
[ 1.406797] osst :I: Tape driver with OnStream support version 0.99.4
[ 1.406797] osst :I: $Id: osst.c,v 1.73 2005/01/01 21:13:34 wriede Exp $
[ 1.420112] SCSI Media Changer driver v0.25
[ 1.426408] libphy: Fixed MDIO Bus: probed
[ 1.430546] tun: Universal TUN/TAP device driver, 1.6
[ 1.435777] CAN device driver interface
[ 1.440107] dwmac-sun8i 1c30000.ethernet: PTP uses main clock
[ 1.445966] dwmac-sun8i 1c30000.ethernet: No regulator found
[ 1.451705] dwmac-sun8i 1c30000.ethernet: Will use internal PHY
[ 1.457858] dwmac-sun8i 1c30000.ethernet: Chain mode enabled
[ 1.463531] dwmac-sun8i 1c30000.ethernet: No HW DMA feature register supported
[ 1.470755] dwmac-sun8i 1c30000.ethernet: Normal descriptors
[ 1.476416] dwmac-sun8i 1c30000.ethernet: RX Checksum Offload Engine supported
[ 1.483639] dwmac-sun8i 1c30000.ethernet: COE Type 2
[ 1.488607] dwmac-sun8i 1c30000.ethernet: TX Checksum insertion supported
[ 1.495965] libphy: stmmac: probed
[ 1.500985] PPP generic driver version 2.4.2
[ 1.505539] PPP BSD Compression module registered
[ 1.510239] PPP Deflate Compression module registered
[ 1.515352] PPP MPPE Compression module registered
[ 1.520140] NET: Registered protocol family 24
[ 1.524742] usbcore: registered new interface driver qmi_wwan
[ 1.530547] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.537087] ehci-platform: EHCI generic platform driver
[ 1.542563] ehci-platform 1c1a000.usb: EHCI Host Controller
[ 1.548180] ehci-platform 1c1a000.usb: new USB bus registered, assigned bus number 1
[ 1.556379] ehci-platform 1c1a000.usb: irq 29, io mem 0x01c1a000
[ 1.575333] ehci-platform 1c1a000.usb: USB 2.0 started, EHCI 1.00
[ 1.581622] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.588421] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.595646] usb usb1: Product: EHCI Host Controller
[ 1.600529] usb usb1: Manufacturer: Linux 4.14.111 ehci_hcd
[ 1.606103] usb usb1: SerialNumber: 1c1a000.usb
[ 1.611161] hub 1-0:1.0: USB hub found
[ 1.614942] hub 1-0:1.0: 1 port detected
[ 1.619586] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.625836] ohci-platform: OHCI generic platform driver
[ 1.631280] ohci-platform 1c1a400.usb: Generic Platform OHCI controller
[ 1.637932] ohci-platform 1c1a400.usb: new USB bus registered, assigned bus number 2
[ 1.645889] ohci-platform 1c1a400.usb: irq 30, io mem 0x01c1a400
[ 1.714493] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[ 1.721298] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.728525] usb usb2: Product: Generic Platform OHCI controller
[ 1.734448] usb usb2: Manufacturer: Linux 4.14.111 ohci_hcd
[ 1.740024] usb usb2: SerialNumber: 1c1a400.usb
[ 1.747363] hub 2-0:1.0: USB hub found
[ 1.751199] hub 2-0:1.0: 1 port detected
[ 1.755867] usbcore: registered new interface driver cdc_acm
[ 1.761562] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[ 1.769633] usbcore: registered new interface driver usblp
[ 1.775159] usbcore: registered new interface driver cdc_wdm
[ 1.780856] usbcore: registered new interface driver uas
[ 1.786254] usbcore: registered new interface driver usb-storage
[ 1.792341] usbcore: registered new interface driver usbserial
[ 1.798209] usbcore: registered new interface driver usbserial_generic
[ 1.804765] usbserial: USB Serial support registered for generic
[ 1.810804] usbcore: registered new interface driver option
[ 1.816402] usbserial: USB Serial support registered for GSM modem (1-port)
[ 1.823496] usbcore: registered new interface driver qcserial
[ 1.829277] usbserial: USB Serial support registered for Qualcomm USB modem
[ 1.837055] mousedev: PS/2 mouse device common for all mice
[ 1.843206] sun6i-rtc 1f00000.rtc: rtc core: registered rtc-sun6i as rtc0
[ 1.850031] sun6i-rtc 1f00000.rtc: RTC enabled
[ 1.854577] i2c /dev entries driver
[ 1.859955] lirc_dev: IR Remote Control driver registered, major 244
[ 1.866351] IR NEC protocol handler initialized
[ 1.870888] IR RC5(x/sz) protocol handler initialized
[ 1.875940] IR RC6 protocol handler initialized
[ 1.880473] IR JVC protocol handler initialized
[ 1.884996] IR Sony protocol handler initialized
[ 1.889615] IR SANYO protocol handler initialized
[ 1.894322] IR Sharp protocol handler initialized
[ 1.899020] IR MCE Keyboard/mouse protocol handler initialized
[ 1.904852] IR LIRC bridge handler initialized
[ 1.909297] IR XMP protocol handler initialized
[ 1.914691] thermal thermal_zone0: failed to read out thermal zone (-16)
[ 1.921967] sunxi-wdt 1c20ca0.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
[ 1.930351] device-mapper: ioctl: 4.37.0-ioctl (2017-09-20) initialised: dm-devel@redhat.com
[ 1.980356] sunxi-mmc 1c0f000.mmc: initialized, max. request size: 16384 KB
[ 2.022738] mmc1: host does not support reading read-only switch, assuming write-enable
[ 2.030778] sunxi-mmc 1c11000.mmc: initialized, max. request size: 16384 KB
[ 2.038971] ledtrig-cpu: registered to indicate activity on CPUs
[ 2.045033] mmc1: Problem switching card into high-speed mode!
[ 2.052159] hidraw: raw HID events driver (C) Jiri Kosina
[ 2.059672] mmc1: new SDHC card at address 0001
[ 2.064359] usbcore: registered new interface driver usbhid
[ 2.069950] usbhid: USB HID core driver
[ 2.074235] mmcblk1: mmc1:0001 SD 7.45 GiB
[ 2.080692] mmcblk1: p1 p2
[ 2.098340] sun4i-codec 1c22c00.codec: Codec <-> 1c22c00.codec mapping ok
[ 2.108448] Initializing XFRM netlink socket
[ 2.113417] NET: Registered protocol family 10
[ 2.120190] Segment Routing with IPv6
[ 2.124069] NET: Registered protocol family 17
[ 2.128615] NET: Registered protocol family 15
[ 2.133112] can: controller area network core (rev 20170425 abi 9)
[ 2.139517] NET: Registered protocol family 29
[ 2.144032] can: raw protocol (rev 20170425)
[ 2.148351] can: broadcast manager protocol (rev 20170425 t)
[ 2.154087] can: netlink gateway (rev 20170425) max_hops=1
[ 2.160131] Key type dns_resolver registered
[ 2.164644] Registering SWP/SWPB emulation handler
[ 2.170953] registered taskstats version 1
[ 2.176347] Key type encrypted registered
[ 2.182488] mmc2: new DDR MMC card at address 0001
[ 2.193258] vcc1v2: supplied by vcc5v0
[ 2.197199] mmcblk2: mmc2:0001 016GB0 14.7 GiB
[ 2.202079] vcc-dram: supplied by vcc5v0
[ 2.206314] mmcblk2boot0: mmc2:0001 016GB0 partition 1 4.00 MiB
[ 2.212575] vdd-cpux-en: supplied by vcc5v0
[ 2.218749] ehci-platform 1c1b000.usb: EHCI Host Controller
[ 2.224453] mmcblk2boot1: mmc2:0001 016GB0 partition 2 4.00 MiB
[ 2.231057] ehci-platform 1c1b000.usb: new USB bus registered, assigned bus number 3
[ 2.238989] mmcblk2: p1 p2 p3
[ 2.243861] ehci-platform 1c1b000.usb: irq 31, io mem 0x01c1b000
[ 2.260304] ehci-platform 1c1b000.usb: USB 2.0 started, EHCI 1.00
[ 2.266603] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.273401] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.280625] usb usb3: Product: EHCI Host Controller
[ 2.285506] usb usb3: Manufacturer: Linux 4.14.111 ehci_hcd
[ 2.291087] usb usb3: SerialNumber: 1c1b000.usb
[ 2.296157] hub 3-0:1.0: USB hub found
[ 2.299945] hub 3-0:1.0: 1 port detected
[ 2.304649] ehci-platform 1c1c000.usb: EHCI Host Controller
[ 2.310323] ehci-platform 1c1c000.usb: new USB bus registered, assigned bus number 4
[ 2.318435] ehci-platform 1c1c000.usb: irq 33, io mem 0x01c1c000
[ 2.335301] ehci-platform 1c1c000.usb: USB 2.0 started, EHCI 1.00
[ 2.341542] usb usb4: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.348337] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.355560] usb usb4: Product: EHCI Host Controller
[ 2.360449] usb usb4: Manufacturer: Linux 4.14.111 ehci_hcd
[ 2.366028] usb usb4: SerialNumber: 1c1c000.usb
[ 2.371054] hub 4-0:1.0: USB hub found
[ 2.374839] hub 4-0:1.0: 1 port detected
[ 2.379447] ehci-platform 1c1d000.usb: EHCI Host Controller
[ 2.385105] ehci-platform 1c1d000.usb: new USB bus registered, assigned bus number 5
[ 2.393343] ehci-platform 1c1d000.usb: irq 35, io mem 0x01c1d000
[ 2.410302] ehci-platform 1c1d000.usb: USB 2.0 started, EHCI 1.00
[ 2.416535] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.423331] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.430556] usb usb5: Product: EHCI Host Controller
[ 2.435444] usb usb5: Manufacturer: Linux 4.14.111 ehci_hcd
[ 2.441019] usb usb5: SerialNumber: 1c1d000.usb
[ 2.446059] hub 5-0:1.0: USB hub found
[ 2.449835] hub 5-0:1.0: 1 port detected
[ 2.454431] ohci-platform 1c1b400.usb: Generic Platform OHCI controller
[ 2.461122] ohci-platform 1c1b400.usb: new USB bus registered, assigned bus number 6
[ 2.469149] ohci-platform 1c1b400.usb: irq 32, io mem 0x01c1b400
[ 2.534430] usb usb6: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.541234] usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.548457] usb usb6: Product: Generic Platform OHCI controller
[ 2.554379] usb usb6: Manufacturer: Linux 4.14.111 ohci_hcd
[ 2.559956] usb usb6: SerialNumber: 1c1b400.usb
[ 2.564952] hub 6-0:1.0: USB hub found
[ 2.568779] hub 6-0:1.0: 1 port detected
[ 2.573359] ohci-platform 1c1c400.usb: Generic Platform OHCI controller
[ 2.580041] ohci-platform 1c1c400.usb: new USB bus registered, assigned bus number 7
[ 2.588229] ohci-platform 1c1c400.usb: irq 34, io mem 0x01c1c400
[ 2.645316] usb 3-1: new high-speed USB device number 2 using ehci-platform
[ 2.656537] usb usb7: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.663340] usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.670572] usb usb7: Product: Generic Platform OHCI controller
[ 2.676502] usb usb7: Manufacturer: Linux 4.14.111 ohci_hcd
[ 2.682080] usb usb7: SerialNumber: 1c1c400.usb
[ 2.687097] hub 7-0:1.0: USB hub found
[ 2.690919] hub 7-0:1.0: 1 port detected
[ 2.695514] ohci-platform 1c1d400.usb: Generic Platform OHCI controller
[ 2.702187] ohci-platform 1c1d400.usb: new USB bus registered, assigned bus number 8
[ 2.710203] ohci-platform 1c1d400.usb: irq 36, io mem 0x01c1d400
[ 2.779427] usb usb8: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.786227] usb usb8: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.793452] usb usb8: Product: Generic Platform OHCI controller
[ 2.799376] usb usb8: Manufacturer: Linux 4.14.111 ohci_hcd
[ 2.804951] usb usb8: SerialNumber: 1c1d400.usb
[ 2.810028] hub 8-0:1.0: USB hub found
[ 2.813848] hub 8-0:1.0: 1 port detected
[ 2.818485] usb_phy_generic usb_phy_generic.3.auto: usb_phy_generic.3.auto supply vcc not found, using dummy regulator
[ 2.829642] musb-hdrc musb-hdrc.4.auto: MUSB HDRC host driver
[ 2.835473] musb-hdrc musb-hdrc.4.auto: new USB bus registered, assigned bus number 9
[ 2.843539] usb usb9: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.850359] usb usb9: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.857587] usb usb9: Product: MUSB HDRC host driver
[ 2.862564] usb usb9: Manufacturer: Linux 4.14.111 musb-hcd
[ 2.868145] usb usb9: SerialNumber: musb-hdrc.4.auto
[ 2.873667] hub 9-0:1.0: USB hub found
[ 2.877520] hub 9-0:1.0: 1 port detected
[ 2.881718] usb 3-1: New USB device found, idVendor=0bda, idProduct=b720
[ 2.888437] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.895580] usb 3-1: Product: 802.11n WLAN Adapter
[ 2.900381] usb 3-1: Manufacturer: Realtek
[ 2.904476] usb 3-1: SerialNumber: 00e04c000001
[ 2.914033] asoc-simple-card soc:sound: i2s-hifi <-> 1c22800.i2s mapping ok
[ 2.923472] input: r_gpio_keys as /devices/platform/r_gpio_keys/input/input0
[ 2.931426] sun6i-rtc 1f00000.rtc: setting system clock to 1970-01-01 00:00:15 UTC (15)
[ 2.939849] vcc3v0: disabling
[ 2.942851] vcc5v0: disabling
[ 2.945824] usb0-vbus: disabling
[ 2.949056] ALSA device list:
[ 2.952045] #0: Dummy 1
[ 2.954662] #1: Loopback 1
[ 2.957550] #2: H3 Audio Codec
[ 2.960782] #3: allwinner,hdmi
[ 2.964475] Waiting for root device /dev/mmcblk0p2...
[ 82.055661] random: fast init done
[ 307.089983] random: crng init done参考了如下链接：关于SD卡启动遇到的问题，但是这里在uboot中查看是有这个分区的。分区也是2个，FAT16和EXT4，ubuntu上Gparted手动分区，uboot输出如下：
=> mmc dev 0
switch to partitions #0, OK
mmc0 is current device
=> mmc part
Partition Map for MMC device 0 -- Partition Type: DOS
Part Start Sector Num Sectors UUID Type
1 8192 67584 33ec79ce-01 0b Boot
2 75776 15538176 33ec79ce-02 83根文件系统是自己根据busybox 1.30.1做的，按照在 ubuntu@x86 用 chroot 到 ARM 平台的 rootfs 这篇帖子尝试过，能够正常进入根目录，其中也换过一些其他的文件系统，都是这个问题。
但是，我在EMMC中烧录了官方的镜像，uboot中的启动参数将root=/dev/mmcblk0p2切换到emmc中：root=/dev/mmcblk1p2是能够正常启动的，日志：
=> setenv bootargs console=ttyS0,115200 panic=5 rootwait root=/dev/mmcblk0p2 rootfstype=ext4 earlyprintk rw
=>
=> load mmc 0:1 0x46000000 zImage
reading zImage
5845760 bytes read in 303 ms (18.4 MiB/s)
=> load mmc 0:1 0x46000000 zImage<INTERRUPT>
=> ls mmc 0:1
5845760 zImage
35679 sun8i-h2-plus-nanopi-duo.dtb
37203 sun8i-h3-nanopi-duo2.dtb
36107 sun8i-h3-nanopi-m1.dtb
37691 sun8i-h3-nanopi-m1-plus.dtb
37222 sun8i-h3-nanopi-neo-air.dtb
34556 sun8i-h3-nanopi-neo-core.dtb
34439 sun8i-h3-nanopi-neo.dtb
36380 sun8i-h3-nanopi-neo-s.dtb
36147 sun8i-h3-nanopi-r1.dtb
36142 sun8i-h3-nanopi-r1s.dtb
1947 boot.scr
1875 boot.cmd
5895024 zImage1
32271 sun8i-h3-atom_n.dtb
34283 sun8i-h3-unit.dtb
System Volume Information/
16 file(s), 1 dir(s)
=> load mmc 0:1 0x48000000 sun8i-h3-nanopi-neo-core.dtb
reading sun8i-h3-nanopi-neo-core.dtb
34556 bytes read in 28 ms (1.2 MiB/s)
=>
=> bootz 0x46000000 - 0x48000000
## Flattened Device Tree blob at 48000000
Booting using the fdt blob at 0x48000000
Loading Device Tree to 49ff4000, end 49fff6fb ... OK
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.14.111 (spaceman@spaceman) (gcc version 9.3.0 (Ubuntu 9.3.0-17ubuntu1~20.04)) #1 SMP Thu Jan 28 21:05:20 CST 2021
[ 0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7), cr=30c5387d
[ 0.000000] CPU: div instructions available: patching division code
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] OF: fdt: Machine model: FriendlyElec NanoPi-NEO-Core
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] Reserved memory: created CMA memory pool at 0x000000005bc00000, size 64 MiB
[ 0.000000] OF: reserved mem: initialized node linux,cma, compatible id shared-dma-pool
[ 0.000000] psci: probing for conduit method from DT.
[ 0.000000] psci: Using PSCI v0.1 Function IDs from DT
[ 0.000000] percpu: Embedded 17 pages/cpu @dff5a000 s37068 r8192 d24372 u69632
[ 0.000000] Built 1 zonelists, mobility grouping on. Total pages: 129920
[ 0.000000] Kernel command line: console=ttyS0,115200 panic=5 rootwait root=/dev/mmcblk1p2 rootfstype=ext4 earlyprintk rw
[ 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: 436044K/524288K available (10240K kernel code, 391K rwdata, 2080K rodata, 2048K init, 302K bss, 22708K reserved, 65536K cma-reserved, 0K highmem)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xffc00000 - 0xfff00000 (3072 kB)
[ 0.000000] vmalloc : 0xe0800000 - 0xff800000 ( 496 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xe0000000 ( 512 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc0c00000 (12256 kB)
[ 0.000000] .init : 0xc1000000 - 0xc1200000 (2048 kB)
[ 0.000000] .data : 0xc1200000 - 0xc1261dc0 ( 392 kB)
[ 0.000000] .bss : 0xc126a7a0 - 0xc12b60f8 ( 303 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
[ 0.000000] NR_IRQS: 16, nr_irqs: 16, preallocated irqs: 16
[ 0.000000] GIC: Using split EOI/Deactivate mode
[ 0.000000] clocksource: timer: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[ 0.000000] arch_timer: cp15 timer(s) running at 24.00MHz (phys).
[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x588fe9dc0, max_idle_ns: 440795202592 ns
[ 0.000007] sched_clock: 56 bits at 24MHz, resolution 41ns, wraps every 4398046511097ns
[ 0.000017] Switching to timer-based delay loop, resolution 41ns
[ 0.000216] Console: colour dummy device 80x30
[ 0.000251] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=120000)
[ 0.000266] pid_max: default: 32768 minimum: 301
[ 0.000426] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.000440] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.001171] CPU: Testing write buffer coherency: ok
[ 0.001625] CPU0: update cpu_capacity 1024
[ 0.001637] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.002011] Setting up static identity map for 0x40200000 - 0x40200060
[ 0.002135] Hierarchical SRCU implementation.
[ 0.002698] smp: Bringing up secondary CPUs ...
[ 0.013454] CPU1: update cpu_capacity 1024
[ 0.013461] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 0.024286] CPU2: update cpu_capacity 1024
[ 0.024291] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[ 0.035032] CPU3: update cpu_capacity 1024
[ 0.035038] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[ 0.035120] smp: Brought up 1 node, 4 CPUs
[ 0.035149] SMP: Total of 4 processors activated (192.00 BogoMIPS).
[ 0.035155] CPU: All CPU(s) started in HYP mode.
[ 0.035160] CPU: Virtualization extensions available.
[ 0.035983] devtmpfs: initialized
[ 0.042542] random: get_random_u32 called from bucket_table_alloc+0xfc/0x228 with crng_init=0
[ 0.043084] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[ 0.043388] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 9556302231375000 ns
[ 0.043413] futex hash table entries: 1024 (order: 4, 65536 bytes)
[ 0.046003] xor: measuring software checksum speed
[ 0.094876] arm4regs : 1263.200 MB/sec
[ 0.144918] 8regs : 877.600 MB/sec
[ 0.194965] 32regs : 808.800 MB/sec
[ 0.245006] neon : 1281.600 MB/sec
[ 0.245014] xor: using function: neon (1281.600 MB/sec)
[ 0.245035] pinctrl core: initialized pinctrl subsystem
[ 0.246022] NET: Registered protocol family 16
[ 0.247572] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.248381] cpuidle: using governor ladder
[ 0.248420] cpuidle: using governor menu
[ 0.248764] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.248775] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.267532] SCSI subsystem initialized
[ 0.267944] usbcore: registered new interface driver usbfs
[ 0.267989] usbcore: registered new interface driver hub
[ 0.268072] usbcore: registered new device driver usb
[ 0.268258] media: Linux media interface: v0.10
[ 0.268292] Linux video capture interface: v2.00
[ 0.268415] pps_core: LinuxPPS API ver. 1 registered
[ 0.268422] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.268440] PTP clock support registered
[ 0.268732] Advanced Linux Sound Architecture Driver Initialized.
[ 0.270215] clocksource: Switched to clocksource arch_sys_counter
[ 0.270389] VFS: Disk quotas dquot_6.6.0
[ 0.270470] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.270629] FS-Cache: Loaded
[ 0.277686] NET: Registered protocol family 2
[ 0.278343] TCP established hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.278391] TCP bind hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.278454] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.278562] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.278605] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.278801] NET: Registered protocol family 1
[ 0.279272] RPC: Registered named UNIX socket transport module.
[ 0.279283] RPC: Registered udp transport module.
[ 0.279289] RPC: Registered tcp transport module.
[ 0.279294] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.279754] kvm [1]: 8-bit VMID
[ 0.280497] kvm [1]: vgic interrupt IRQ16
[ 0.280594] kvm [1]: Hyp mode initialized successfully
[ 0.283293] workingset: timestamp_bits=14 max_order=17 bucket_order=3
[ 0.287910] zbud: loaded
[ 0.289481] FS-Cache: Netfs 'nfs' registered for caching
[ 0.290029] NFS: Registering the id_resolver key type
[ 0.290066] Key type id_resolver registered
[ 0.290073] Key type id_legacy registered
[ 0.290089] nfs4filelayout_init: NFSv4 File Layout Driver Registering...
[ 0.290106] Installing knfsd (copyright (C) 1996 okir@monad.swb.de).
[ 0.291157] fuse init (API version 7.26)
[ 0.296512] async_tx: api initialized (async)
[ 0.296646] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 246)
[ 0.296807] io scheduler noop registered (default)
[ 0.296818] io scheduler deadline registered
[ 0.297004] io scheduler cfq registered
[ 0.297013] io scheduler mq-deadline registered
[ 0.297149] io scheduler bfq registered
[ 0.297839] sun4i-usb-phy 1c19400.phy: Couldn't request ID GPIO, pinctrl may not init
[ 0.301631] sun8i-h3-pinctrl 1c20800.pinctrl: initialized sunXi PIO driver
[ 0.303168] sun8i-h3-r-pinctrl 1f02c00.pinctrl: initialized sunXi PIO driver
[ 0.308588] Serial: 8250/16550 driver, 8 ports, IRQ sharing disabled
[ 0.310487] console [ttyS0] disabled
[ 0.330699] 1c28000.serial: ttyS0 at MMIO 0x1c28000 (irq = 45, base_baud = 1500000) is a U6_16550A
[ 1.078239] console [ttyS0] enabled
[ 1.104486] 1c28400.serial: ttyS1 at MMIO 0x1c28400 (irq = 46, base_baud = 1500000) is a U6_16550A
[ 1.136069] 1c28800.serial: ttyS2 at MMIO 0x1c28800 (irq = 47, base_baud = 1500000) is a U6_16550A
[ 1.167641] 1c28c00.serial: ttyS3 at MMIO 0x1c28c00 (irq = 48, base_baud = 1500000) is a U6_16550A
[ 1.178855] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 1.185488] [drm] No driver support for vblank timestamp query.
[ 1.200826] sun4i-drm display-engine: bound 1100000.mixer (ops 0xc0c51bb8)
[ 1.207921] sun4i-drm display-engine: No panel or bridge found... RGB output disabled
[ 1.215771] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc0c508bc)
[ 1.345308] sun8i-dw-hdmi 1ee0000.hdmi: Detected HDMI TX controller v1.32a with HDCP (sun8i_dw_hdmi_phy)
[ 1.355195] sun8i-dw-hdmi 1ee0000.hdmi: registered DesignWare HDMI I2C bus driver
[ 1.362957] sun4i-drm display-engine: bound 1ee0000.hdmi (ops 0xc0c51f38)
[ 1.369798] [drm] Cannot find any crtc or sizes - going 1920x1080
[ 1.417192] Console: switching to colour frame buffer device 240x67
[ 1.448120] sun4i-drm display-engine: fb0: frame buffer device
[ 1.454504] [drm] Initialized sun4i-drm 1.0.0 20150629 for display-engine on minor 0
[ 1.471432] loop: module loaded
[ 1.491024] st: Version 20160209, fixed bufsize 32768, s/g segs 256
[ 1.497403] osst :I: Tape driver with OnStream support version 0.99.4
[ 1.497403] osst :I: $Id: osst.c,v 1.73 2005/01/01 21:13:34 wriede Exp $
[ 1.510713] SCSI Media Changer driver v0.25
[ 1.517006] libphy: Fixed MDIO Bus: probed
[ 1.521152] tun: Universal TUN/TAP device driver, 1.6
[ 1.526395] CAN device driver interface
[ 1.530751] dwmac-sun8i 1c30000.ethernet: PTP uses main clock
[ 1.536562] dwmac-sun8i 1c30000.ethernet: No regulator found
[ 1.542269] dwmac-sun8i 1c30000.ethernet: Will use internal PHY
[ 1.548381] dwmac-sun8i 1c30000.ethernet: Chain mode enabled
[ 1.554051] dwmac-sun8i 1c30000.ethernet: No HW DMA feature register supported
[ 1.561274] dwmac-sun8i 1c30000.ethernet: Normal descriptors
[ 1.566938] dwmac-sun8i 1c30000.ethernet: RX Checksum Offload Engine supported
[ 1.574160] dwmac-sun8i 1c30000.ethernet: COE Type 2
[ 1.579129] dwmac-sun8i 1c30000.ethernet: TX Checksum insertion supported
[ 1.586503] libphy: stmmac: probed
[ 1.591582] PPP generic driver version 2.4.2
[ 1.596104] PPP BSD Compression module registered
[ 1.600820] PPP Deflate Compression module registered
[ 1.605900] PPP MPPE Compression module registered
[ 1.610697] NET: Registered protocol family 24
[ 1.615257] usbcore: registered new interface driver qmi_wwan
[ 1.621031] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.627559] ehci-platform: EHCI generic platform driver
[ 1.633029] ehci-platform 1c1a000.usb: EHCI Host Controller
[ 1.638651] ehci-platform 1c1a000.usb: new USB bus registered, assigned bus number 1
[ 1.646839] ehci-platform 1c1a000.usb: irq 29, io mem 0x01c1a000
[ 1.665232] ehci-platform 1c1a000.usb: USB 2.0 started, EHCI 1.00
[ 1.671536] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.678335] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.685562] usb usb1: Product: EHCI Host Controller
[ 1.690444] usb usb1: Manufacturer: Linux 4.14.111 ehci_hcd
[ 1.696020] usb usb1: SerialNumber: 1c1a000.usb
[ 1.701089] hub 1-0:1.0: USB hub found
[ 1.704867] hub 1-0:1.0: 1 port detected
[ 1.709497] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 1.715718] ohci-platform: OHCI generic platform driver
[ 1.721153] ohci-platform 1c1a400.usb: Generic Platform OHCI controller
[ 1.727796] ohci-platform 1c1a400.usb: new USB bus registered, assigned bus number 2
[ 1.735763] ohci-platform 1c1a400.usb: irq 30, io mem 0x01c1a400
[ 1.804374] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001
[ 1.811181] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 1.818410] usb usb2: Product: Generic Platform OHCI controller
[ 1.824333] usb usb2: Manufacturer: Linux 4.14.111 ohci_hcd
[ 1.829909] usb usb2: SerialNumber: 1c1a400.usb
[ 1.837238] hub 2-0:1.0: USB hub found
[ 1.841038] hub 2-0:1.0: 1 port detected
[ 1.845681] usbcore: registered new interface driver cdc_acm
[ 1.851356] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters
[ 1.859403] usbcore: registered new interface driver usblp
[ 1.864922] usbcore: registered new interface driver cdc_wdm
[ 1.870619] usbcore: registered new interface driver uas
[ 1.876026] usbcore: registered new interface driver usb-storage
[ 1.882117] usbcore: registered new interface driver usbserial
[ 1.887986] usbcore: registered new interface driver usbserial_generic
[ 1.894543] usbserial: USB Serial support registered for generic
[ 1.900582] usbcore: registered new interface driver option
[ 1.906182] usbserial: USB Serial support registered for GSM modem (1-port)
[ 1.913280] usbcore: registered new interface driver qcserial
[ 1.919061] usbserial: USB Serial support registered for Qualcomm USB modem
[ 1.926849] mousedev: PS/2 mouse device common for all mice
[ 1.932940] sun6i-rtc 1f00000.rtc: rtc core: registered rtc-sun6i as rtc0
[ 1.939739] sun6i-rtc 1f00000.rtc: RTC enabled
[ 1.944264] i2c /dev entries driver
[ 1.949622] lirc_dev: IR Remote Control driver registered, major 244
[ 1.956011] IR NEC protocol handler initialized
[ 1.960549] IR RC5(x/sz) protocol handler initialized
[ 1.965603] IR RC6 protocol handler initialized
[ 1.970127] IR JVC protocol handler initialized
[ 1.974659] IR Sony protocol handler initialized
[ 1.979278] IR SANYO protocol handler initialized
[ 1.983975] IR Sharp protocol handler initialized
[ 1.988681] IR MCE Keyboard/mouse protocol handler initialized
[ 1.994513] IR LIRC bridge handler initialized
[ 1.998960] IR XMP protocol handler initialized
[ 2.004346] thermal thermal_zone0: failed to read out thermal zone (-16)
[ 2.011575] sunxi-wdt 1c20ca0.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
[ 2.019876] device-mapper: ioctl: 4.37.0-ioctl (2017-09-20) initialised: dm-devel@redhat.com
[ 2.070277] sunxi-mmc 1c0f000.mmc: initialized, max. request size: 16384 KB
[ 2.112669] mmc1: host does not support reading read-only switch, assuming write-enable
[ 2.115566] sunxi-mmc 1c11000.mmc: initialized, max. request size: 16384 KB
[ 2.122611] mmc1: Problem switching card into high-speed mode!
[ 2.133647] mmc1: new SDHC card at address 0001
[ 2.134619] ledtrig-cpu: registered to indicate activity on CPUs
[ 2.138635] mmcblk1: mmc1:0001 SD 7.45 GiB
[ 2.144435] hidraw: raw HID events driver (C) Jiri Kosina
[ 2.150671] mmcblk1: p1 p2
[ 2.153992] usbcore: registered new interface driver usbhid
[ 2.162202] usbhid: USB HID core driver
[ 2.178255] sun4i-codec 1c22c00.codec: Codec <-> 1c22c00.codec mapping ok
[ 2.188351] Initializing XFRM netlink socket
[ 2.193201] NET: Registered protocol family 10
[ 2.199956] Segment Routing with IPv6
[ 2.203743] NET: Registered protocol family 17
[ 2.208247] NET: Registered protocol family 15
[ 2.212725] can: controller area network core (rev 20170425 abi 9)
[ 2.219056] NET: Registered protocol family 29
[ 2.223536] can: raw protocol (rev 20170425)
[ 2.227841] can: broadcast manager protocol (rev 20170425 t)
[ 2.233515] can: netlink gateway (rev 20170425) max_hops=1
[ 2.239530] Key type dns_resolver registered
[ 2.244047] Registering SWP/SWPB emulation handler
[ 2.250815] registered taskstats version 1
[ 2.254963] mmc2: new DDR MMC card at address 0001
[ 2.255640] Key type encrypted registered
[ 2.260301] mmcblk2: mmc2:0001 016GB0 14.7 GiB
[ 2.268771] mmcblk2boot0: mmc2:0001 016GB0 partition 1 4.00 MiB
[ 2.269822] vcc1v2: supplied by vcc5v0
[ 2.275007] mmcblk2boot1: mmc2:0001 016GB0 partition 2 4.00 MiB
[ 2.278881] vcc-dram: supplied by vcc5v0
[ 2.288517] mmcblk2: p1 p2 p3
[ 2.288784] vdd-cpux-en: supplied by vcc5v0
[ 2.297651] ehci-platform 1c1b000.usb: EHCI Host Controller
[ 2.303290] ehci-platform 1c1b000.usb: new USB bus registered, assigned bus number 3
[ 2.311495] ehci-platform 1c1b000.usb: irq 31, io mem 0x01c1b000
[ 2.330234] ehci-platform 1c1b000.usb: USB 2.0 started, EHCI 1.00
[ 2.336541] usb usb3: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.343337] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.350564] usb usb3: Product: EHCI Host Controller
[ 2.355446] usb usb3: Manufacturer: Linux 4.14.111 ehci_hcd
[ 2.361023] usb usb3: SerialNumber: 1c1b000.usb
[ 2.366170] hub 3-0:1.0: USB hub found
[ 2.369958] hub 3-0:1.0: 1 port detected
[ 2.374608] ehci-platform 1c1c000.usb: EHCI Host Controller
[ 2.380254] ehci-platform 1c1c000.usb: new USB bus registered, assigned bus number 4
[ 2.388347] ehci-platform 1c1c000.usb: irq 33, io mem 0x01c1c000
[ 2.405230] ehci-platform 1c1c000.usb: USB 2.0 started, EHCI 1.00
[ 2.411470] usb usb4: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.418265] usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.425491] usb usb4: Product: EHCI Host Controller
[ 2.430374] usb usb4: Manufacturer: Linux 4.14.111 ehci_hcd
[ 2.435949] usb usb4: SerialNumber: 1c1c000.usb
[ 2.440975] hub 4-0:1.0: USB hub found
[ 2.444751] hub 4-0:1.0: 1 port detected
[ 2.449301] ehci-platform 1c1d000.usb: EHCI Host Controller
[ 2.454910] ehci-platform 1c1d000.usb: new USB bus registered, assigned bus number 5
[ 2.462989] ehci-platform 1c1d000.usb: irq 35, io mem 0x01c1d000
[ 2.480222] ehci-platform 1c1d000.usb: USB 2.0 started, EHCI 1.00
[ 2.486454] usb usb5: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.493249] usb usb5: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.500474] usb usb5: Product: EHCI Host Controller
[ 2.505357] usb usb5: Manufacturer: Linux 4.14.111 ehci_hcd
[ 2.510933] usb usb5: SerialNumber: 1c1d000.usb
[ 2.515977] hub 5-0:1.0: USB hub found
[ 2.519754] hub 5-0:1.0: 1 port detected
[ 2.524322] ohci-platform 1c1b400.usb: Generic Platform OHCI controller
[ 2.530980] ohci-platform 1c1b400.usb: new USB bus registered, assigned bus number 6
[ 2.538960] ohci-platform 1c1b400.usb: irq 32, io mem 0x01c1b400
[ 2.604364] usb usb6: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.611165] usb usb6: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.618391] usb usb6: Product: Generic Platform OHCI controller
[ 2.624312] usb usb6: Manufacturer: Linux 4.14.111 ohci_hcd
[ 2.629888] usb usb6: SerialNumber: 1c1b400.usb
[ 2.634977] hub 6-0:1.0: USB hub found
[ 2.638775] hub 6-0:1.0: 1 port detected
[ 2.643377] ohci-platform 1c1c400.usb: Generic Platform OHCI controller
[ 2.650024] ohci-platform 1c1c400.usb: new USB bus registered, assigned bus number 7
[ 2.658136] ohci-platform 1c1c400.usb: irq 34, io mem 0x01c1c400
[ 2.715243] usb 3-1: new high-speed USB device number 2 using ehci-platform
[ 2.726416] usb usb7: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.733217] usb usb7: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.740451] usb usb7: Product: Generic Platform OHCI controller
[ 2.746381] usb usb7: Manufacturer: Linux 4.14.111 ohci_hcd
[ 2.751960] usb usb7: SerialNumber: 1c1c400.usb
[ 2.756980] hub 7-0:1.0: USB hub found
[ 2.760780] hub 7-0:1.0: 1 port detected
[ 2.765361] ohci-platform 1c1d400.usb: Generic Platform OHCI controller
[ 2.772014] ohci-platform 1c1d400.usb: new USB bus registered, assigned bus number 8
[ 2.780020] ohci-platform 1c1d400.usb: irq 36, io mem 0x01c1d400
[ 2.849357] usb usb8: New USB device found, idVendor=1d6b, idProduct=0001
[ 2.856160] usb usb8: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.863387] usb usb8: Product: Generic Platform OHCI controller
[ 2.869311] usb usb8: Manufacturer: Linux 4.14.111 ohci_hcd
[ 2.874888] usb usb8: SerialNumber: 1c1d400.usb
[ 2.879981] hub 8-0:1.0: USB hub found
[ 2.883776] hub 8-0:1.0: 1 port detected
[ 2.888418] usb_phy_generic usb_phy_generic.3.auto: usb_phy_generic.3.auto supply vcc not found, using dummy regulator
[ 2.899503] musb-hdrc musb-hdrc.4.auto: MUSB HDRC host driver
[ 2.905319] musb-hdrc musb-hdrc.4.auto: new USB bus registered, assigned bus number 9
[ 2.913399] usb usb9: New USB device found, idVendor=1d6b, idProduct=0002
[ 2.920226] usb usb9: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[ 2.927464] usb usb9: Product: MUSB HDRC host driver
[ 2.932442] usb usb9: Manufacturer: Linux 4.14.111 musb-hcd
[ 2.938023] usb usb9: SerialNumber: musb-hdrc.4.auto
[ 2.943626] hub 9-0:1.0: USB hub found
[ 2.947459] hub 9-0:1.0: 1 port detected
[ 2.951566] usb 3-1: New USB device found, idVendor=0bda, idProduct=b720
[ 2.958278] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.965418] usb 3-1: Product: 802.11n WLAN Adapter
[ 2.970221] usb 3-1: Manufacturer: Realtek
[ 2.974318] usb 3-1: SerialNumber: 00e04c000001
[ 2.982808] asoc-simple-card soc:sound: i2s-hifi <-> 1c22800.i2s mapping ok
[ 2.993129] input: r_gpio_keys as /devices/platform/r_gpio_keys/input/input0
[ 3.000916] sun6i-rtc 1f00000.rtc: setting system clock to 1970-01-01 00:40:11 UTC (2411)
[ 3.009465] vcc3v0: disabling
[ 3.012454] vcc5v0: disabling
[ 3.015438] usb0-vbus: disabling
[ 3.018667] ALSA device list:
[ 3.021646] #0: Dummy 1
[ 3.024263] #1: Loopback 1
[ 3.027149] #2: H3 Audio Codec
[ 3.030394] #3: allwinner,hdmi
[ 3.058317] random: fast init done
[ 3.063101] EXT4-fs (mmcblk1p2): mounted filesystem with ordered data mode. Opts: (null)
[ 3.071266] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 3.096082] devtmpfs: mounted
[ 3.101746] Freeing unused kernel memory: 2048K
mount: mounting tmpfs on /tmp failed: No such file or directory
Please press Enter to activate this console.
-/bin/sh: tput: not found
-/bin/sh: tput: not found
-/bin/sh: tput: not found
-/bin/sh: tput: not found
@(none):[/]:
@(none):[/]:板子采用Quantum，换过H3的其他板子（NanoPi Duo2），结果是一样的（直接将SD卡插入NanoPi Duo2中）一直卡在 Waiting for root device /dev/mmcblk0p2...中
设备树目前是用的sun8i-h3-nanopi-neo-core.dtb。
内核和uboot都是根据友善官方教程Building U-boot and Linux for H5/H3/H2+/zh重新编译的（未修改源码，直接编译），编译器用的Ubuntu2004中apt中的arm-linux-gnueabihf-gcc（尝试过友善提供的，结果一样）
现在一直卡在这里好久了 求大佬帮个忙看看哪里出问题了 感激不尽
最近编辑记录 来日方长 (2021-01-28 22:19:16)
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根据你sdcard中启动的内核日志，sd卡看起来设备也是mmcblk1，mmc反而成了mmcblk2，估计是内核的驱动有意为之。
感谢 好像是这里的问题
我说咋当时候进去mmcblk1还觉得有点怪
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