移植4.1内核时遇到devtmpfs: error mounting -2这样的问...
本帖最后由 yick 于 2018-8-13 15:45 编辑具体是这样的，用的是飞凌的开发板:
芯片 iMX6UL，
NAND flash 256M
DDR 256M
设备树 imx6ul-14x14-evk-gpmi-7.dtb
原有的u-boot+zImage+logo+dtbs+rootfs是没问题的，但是内核是3.14的。
现在我想用4.1的内核来替换3.14的内核，
设备树没有变（因为开发板本身没变），
uboot没有变，
logo文件没有变，
文件系统没有变，
然后在4.1内核中编译yaffs2文件系统，然后通过 mfgtools工具烧录进去。
然后重新上电启动出现： devtmpfs: error mounting -2 这个错误。（在网上搜了好多资料，解决不了）
详细打印信息如下：
U-Boot 2015.04-g3989e3c (Dec 14 2017 - 19:04:37)
CPU: Freescale i.MX6UL rev1.1 at 396 MHz
CPU: Temperature 39 C
Reset cause: POR
Board: MX6UL 14x14 EVK
I2C: ready
DRAM:256 MiB
NAND:256 MiB
MMC: FSL_SDHC: 0
*** Warning - bad CRC, using default environment
Display: TFT70AB (800x480)
Video: 800x480x24
NAND read: device 0 offset 0x400000, size 0x80000
524288 bytes read: OK
NAND read: device 0 offset 0x400000, size 0x80000
524288 bytes read: OK
display bmp cfb_console.c
In: serial
Out: serial
Err: serial
Net: FEC0
Error: FEC0 address not set.
Normal Boot
Hit any key to stop autoboot:0
nand boot..........
NAND read: device 0 offset 0xa00000, size 0x800000
8388608 bytes read: OK
NAND read: device 0 offset 0x700000, size 0x40000
262144 bytes read: OK
Kernel image @ 0x80800000 [ 0x000000 - 0x55e8f8 ]
## Flattened Device Tree blob at 83000000
Booting using the fdt blob at 0x83000000
Using Device Tree in place at 83000000, end 8300c7c5
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 4.1.15 (root@Ding) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #2 SMP PREEMPT Fri Aug 10 20:14:33 CST 2018
[ 0.000000] CPU: ARMv7 Processor revision 5 (ARMv7), cr=10c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine model: Freescale i.MX6 UltraLite 14x14 EVK Board
[ 0.000000] cma: Reserved 64 MiB at 0x8c000000
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] PERCPU: Embedded 12 pages/cpu @8bdb1000 s16768 r8192 d24192 u49152
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.Total pages: 65024
[ 0.000000] Kernel command line: console=ttymxc0,115200 cma=64M root=/dev/mtdblock5 rootfstype=yaffs2,calibrate=y
[ 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] Memory: 183512K/262144K available (6957K kernel code, 319K rwdata, 2364K rodata, 404K init, 424K bss, 13096K 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 : 0x90800000 - 0xff000000 (1768 MB)
[ 0.000000] lowmem: 0x80000000 - 0x90000000 ( 256 MB)
[ 0.000000] pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)
[ 0.000000] modules : 0x7f000000 - 0x7fe00000 (14 MB)
[ 0.000000] .text : 0x80008000 - 0x80922a30 (9323 kB)
[ 0.000000] .init : 0x80923000 - 0x80988000 ( 404 kB)
[ 0.000000] .data : 0x80988000 - 0x809d7e80 ( 320 kB)
[ 0.000000] .bss : 0x809da000 - 0x80a44368 ( 425 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000]Additional per-CPU info printed with stalls.
[ 0.000000]RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at arch/arm/mach-imx/gpc.c:608 imx_gpc_check_dt+0x4c/0x84()
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.1.15 #2
[ 0.000000] Hardware name: Freescale i.MX6 Ultralite (Device Tree)
[ 0.000000] [<80016b64>] (unwind_backtrace) from [<80012878>] (show_stack+0x10/0x14)
[ 0.000000] [<80012878>] (show_stack) from [<8069511c>] (dump_stack+0x74/0xd0)
[ 0.000000] [<8069511c>] (dump_stack) from [<80038e54>] (warn_slowpath_common+0x78/0xb0)
[ 0.000000] [<80038e54>] (warn_slowpath_common) from [<80038ea8>] (warn_slowpath_null+0x1c/0x24)
[ 0.000000] [<80038ea8>] (warn_slowpath_null) from [<809310ec>] (imx_gpc_check_dt+0x4c/0x84)
[ 0.000000] [<809310ec>] (imx_gpc_check_dt) from [<80944624>] (imx6ul_init_irq+0x8/0x18)
[ 0.000000] [<80944624>] (imx6ul_init_irq) from [<80926368>] (init_IRQ+0x28/0x80)
[ 0.000000] [<80926368>] (init_IRQ) from [<80923aa8>] (start_kernel+0x21c/0x3b0)
[ 0.000000] [<80923aa8>] (start_kernel) from [<8000807c>] (0x8000807c)
[ 0.000000] ---[ end trace cb88537fdc8fa200 ]---
[ 0.000000] Outdated DT detected, suspend/resume will NOT work
[ 0.000000] mxc_clocksource_init 24000000
[ 0.000000] Switching to timer-based delay loop, resolution 41ns
[ 0.000016] sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every 89478484971ns
[ 0.000055] clocksource mxc_timer1: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 79635851949 ns
[ 0.002800] Console: colour dummy device 80x30
[ 0.002841] Calibrating delay loop (skipped), value calculated using timer frequency.. 48.00 BogoMIPS (lpj=240000)
[ 0.002876] pid_max: default: 32768 minimum: 301
[ 0.003097] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.003124] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.004488] CPU: Testing write buffer coherency: ok
[ 0.004988] /cpus/cpu@0 missing clock-frequency property
[ 0.005031] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.005138] Setting up static identity map for 0x80008280 - 0x800082f0
[ 0.041232] Brought up 1 CPUs
[ 0.041268] SMP: Total of 1 processors activated (48.00 BogoMIPS).
[ 0.041288] CPU: All CPU(s) started in SVC mode.
[ 0.042375] devtmpfs: initialized
[ 0.060255] device-tree: Duplicate name in lcdif@021c8000, renamed to "display#1"
[ 0.065649] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[ 0.066522] clocksource jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[ 0.072084] pinctrl core: initialized pinctrl subsystem
[ 0.074835] NET: Registered protocol family 16
[ 0.093211] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.120904] cpuidle: using governor ladder
[ 0.150971] cpuidle: using governor menu
[ 0.199763] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.199801] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.204369] imx6ul-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
[ 0.259258] mxs-dma 1804000.dma-apbh: initialized
[ 0.265115] SCSI subsystem initialized
[ 0.266509] usbcore: registered new interface driver usbfs
[ 0.266698] usbcore: registered new interface driver hub
[ 0.266922] usbcore: registered new device driver usb
[ 0.270517] i2c i2c-0: IMX I2C adapter registered
[ 0.270563] i2c i2c-0: can't use DMA
[ 0.272203] i2c i2c-1: IMX I2C adapter registered
[ 0.272247] i2c i2c-1: can't use DMA
[ 0.272556] Linux video capture interface: v2.00
[ 0.272765] pps_core: LinuxPPS API ver. 1 registered
[ 0.272786] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.272864] PTP clock support registered
[ 0.275797] Advanced Linux Sound Architecture Driver Initialized.
[ 0.280005] Switched to clocksource mxc_timer1
[ 0.306744] NET: Registered protocol family 2
[ 0.308346] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.308443] TCP bind hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.308536] TCP: Hash tables configured (established 2048 bind 2048)
[ 0.308675] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.308737] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.309140] NET: Registered protocol family 1
[ 0.309865] RPC: Registered named UNIX socket transport module.
[ 0.309898] RPC: Registered udp transport module.
[ 0.309916] RPC: Registered tcp transport module.
[ 0.309934] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.313434] imx rpmsg driver is registered.
[ 0.315686] Bus freq driver module loaded
[ 0.317895] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 0.335498] VFS: Disk quotas dquot_6.6.0
[ 0.335992] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.341960] NFS: Registering the id_resolver key type
[ 0.342063] Key type id_resolver registered
[ 0.342084] Key type id_legacy registered
[ 0.342304] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[ 0.344206] fuse init (API version 7.23)
[ 0.349059] io scheduler noop registered
[ 0.349103] io scheduler deadline registered
[ 0.349220] io scheduler cfq registered (default)
[ 0.350669] imx-weim 21b8000.weim: Driver registered.
[ 0.357245] backlight supply power not found, using dummy regulator
[ 0.362492] 21c8000.lcdif supply lcd not found, using dummy regulator
[ 0.471662] mxsfb 21c8000.lcdif: failed to find mxc display driver
[ 0.490463] Console: switching to colour frame buffer device 100x30
[ 0.504982] mxsfb 21c8000.lcdif: initialized
[ 0.512362] imx-sdma 20ec000.sdma: no event needs to be remapped
[ 0.512582] imx-sdma 20ec000.sdma: loaded firmware 3.3
[ 0.520332] imx-sdma 20ec000.sdma: initialized
[ 0.522715] 2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 18, base_baud = 5000000) is a IMX
[ 1.268610] console enabled
[ 1.274319] 21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 232, base_baud = 5000000) is a IMX
[ 1.284562] 21ec000.serial: ttymxc2 at MMIO 0x21ec000 (irq = 233, base_baud = 5000000) is a IMX
[ 1.296247] imx sema4 driver is registered.
[ 1.300766] Initialized drm 1.1.0 20060810
[ 1.306654] Initialized vivante 1.0.0 20120216 on minor 0
[ 1.339597] brd: module loaded
[ 1.356305] loop: module loaded
[ 1.376686] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
[ 1.383148] nand: Micron MT29F2G08ABAEAWP
[ 1.387197] nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[ 1.395691] gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5
[ 1.402791] Scanning device for bad blocks
[ 1.597331] 6 ofpart partitions found on MTD device gpmi-nand
[ 1.603171] Creating 6 MTD partitions on "gpmi-nand":
[ 1.608265] 0x000000000000-0x000000400000 : "boot"
[ 1.615787] 0x000000400000-0x000000600000 : "logo"
[ 1.623299] 0x000000600000-0x000000700000 : "ENV"
[ 1.630597] 0x000000700000-0x000000a00000 : "DTB"
[ 1.637845] 0x000000a00000-0x000001200000 : "kernel"
[ 1.645466] 0x000001200000-0x000010000000 : "rootfs"
[ 1.653605] gpmi-nand 1806000.gpmi-nand: driver registered.
[ 1.662896] 20b4000.ethernet supply phy not found, using dummy regulator
[ 1.671087] pps pps0: new PPS source ptp0
[ 1.676616] fec 20b4000.ethernet (unnamed net_device) (uninitialized): Invalid MAC address: 00:00:00:00:00:00
[ 1.686744] fec 20b4000.ethernet (unnamed net_device) (uninitialized): Using random MAC address: 3a:6a:02:19:ba:91
[ 1.698171] libphy: fec_enet_mii_bus: probed
[ 1.706464] fec 20b4000.ethernet eth0: registered PHC device 0
[ 1.714259] 2188000.ethernet supply phy not found, using dummy regulator
[ 1.722397] pps pps1: new PPS source ptp1
[ 1.727982] fec 2188000.ethernet (unnamed net_device) (uninitialized): Invalid MAC address: 00:00:00:00:00:00
[ 1.738319] fec 2188000.ethernet (unnamed net_device) (uninitialized): Using random MAC address: 26:e8:33:c8:76:da
[ 1.751241] fec 2188000.ethernet eth1: registered PHC device 1
[ 1.758978] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.765787] ehci-mxc: Freescale On-Chip EHCI Host driver
[ 1.771734] usbcore: registered new interface driver usb-storage
[ 1.780936] 2184800.usbmisc supply vbus-wakeup not found, using dummy regulator
[ 1.797233] 2184200.usb supply vbus not found, using dummy regulator
[ 1.807718] ci_hdrc ci_hdrc.1: EHCI Host Controller
[ 1.812789] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
[ 1.840147] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
[ 1.847947] hub 1-0:1.0: USB hub found
[ 1.852027] hub 1-0:1.0: 1 port detected
[ 1.858395] Mass Storage Function, version: 2009/09/11
[ 1.863783] LUN: removable file: (no medium)
[ 1.868141] no file given for LUN0
[ 1.871752] g_mass_storage ci_hdrc.0: failed to start g_mass_storage: -22
[ 1.879199] mousedev: PS/2 mouse device common for all mice
[ 1.888279] input: iMX6UL TouchScreen Controller as /devices/platform/soc/2100000.aips-bus/2040000.tsc/input/input0
[ 1.902304] snvs_rtc 20cc034.snvs-rtc-lp: snvs rtc: you use old dts file, please update it
[ 1.911974] snvs_rtc 20cc034.snvs-rtc-lp: rtc core: registered 20cc034.snvs-rtc-lp as rtc0
[ 1.920738] i2c /dev entries driver
[ 1.926992] IR NEC protocol handler initialized
[ 1.931687] IR RC5(x/sz) protocol handler initialized
[ 1.936786] IR RC6 protocol handler initialized
[ 1.941408] IR JVC protocol handler initialized
[ 1.945979] IR Sony protocol handler initialized
[ 1.950931] IR SANYO protocol handler initialized
[ 1.955685] IR Sharp protocol handler initialized
[ 1.960495] IR MCE Keyboard/mouse protocol handler initialized
[ 1.966369] IR XMP protocol handler initialized
[ 1.974155] pxp-v4l2 pxp_v4l2: initialized
[ 1.981380] imx2-wdt 20bc000.wdog: timeout 60 sec (nowayout=0)
[ 1.988155] sdhci: Secure Digital Host Controller Interface driver
[ 1.994475] sdhci: Copyright(c) Pierre Ossman
[ 1.998887] sdhci-pltfm: SDHCI platform and OF driver helper
[ 2.007103] /soc/aips-bus@02100000/usdhc@02190000: voltage-ranges unspecified
[ 2.016573] sdhci-esdhc-imx 2190000.usdhc: No vqmmc regulator found
[ 2.071147] mmc0: SDHCI controller on 2190000.usdhc using ADMA
[ 2.096064] usbcore: registered new interface driver usbhid
[ 2.103871] usbhid: USB HID core driver
[ 2.137227] NET: Registered protocol family 10
[ 2.144623] sit: IPv6 over IPv4 tunneling driver
[ 2.153499] NET: Registered protocol family 17
[ 2.158255] Key type dns_resolver registered
[ 2.163247] Failed to disable 696MHz OPP
[ 2.170135] usb 1-1: new high-speed USB device number 2 using ci_hdrc
[ 2.180731] Registering SWP/SWPB emulation handler
[ 2.224390] snvs_rtc 20cc034.snvs-rtc-lp: setting system clock to 1970-01-01 00:00:00 UTC (0)
[ 2.255705] vref-3v3: disabling
[ 2.258901] usb_otg1_vbus: disabling
[ 2.262603] can-3v3: disabling
[ 2.266009] ALSA device list:
[ 2.268997] No soundcards found.
[ 2.276660] yaffs: dev is 32505861 name is "mtdblock5" ro
[ 2.287458] yaffs: passed flags ""
[ 2.326374] hub 1-1:1.0: USB hub found
[ 2.332036] hub 1-1:1.0: 4 ports detected
[ 2.395719] random: nonblocking pool is initialized
[ 2.620055] usb 1-1.4: new high-speed USB device number 3 using ci_hdrc
[ 9.097586] VFS: Mounted root (yaffs2 filesystem) readonly on device 31:5.
[ 9.104587] devtmpfs: error mounting -2
[ 9.109299] Freeing unused kernel memory: 404K (80923000 - 80988000)
[ 9.115838] Kernel panic - not syncing: No working init found.Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
[ 9.128991] ---[ end Kernel panic - not syncing: No working init found.Try passing init= option to kernel. See Linux Documentation/init.txt for guidance.
后续添加
uboot下打印的环境信息：
=> pri
baudrate=115200
bootcmd=if test ${bootdev} = sd1; then echo update firmware.........;run update_from_sd;else echo nand boot..........;run nandargs;run bootnand; fi;
bootcmd_mfg=run mfgtool_args;bootz ${loadaddr} ${initrd_addr} ${fdt_addr};
bootdelay=3
bootdev=mmc2
bootnand=nand read ${loadaddr} 0xa00000 0x800000;nand read ${fdt_addr} ${nand_addr} 0x40000;bootz ${loadaddr} - ${fdt_addr};
calibrate=y
console=ttymxc0
ethact=FEC0
ethprime=FEC
fdt_addr=0x83000000
fdt_file=imx6ul-14x14-evk-gpmi-7.dtb
fdt_filebak=imx6ul-14x14-evk.dtb
fdt_high=0xffffffff
initrd_addr=0x83800000
initrd_high=0xffffffff
loadaddr=0x80800000
logoflag=70
mfgtool_args=setenv bootargs console=${console},${baudrate} rdinit=/linuxrc g_mass_storage.stall=0 g_mass_storage.removable=1 g_mass_storage.idVendor=0x066F g_mass_storage.idProduct=0x37FF g_mass_storage.iSerialNumber="" clk_ignore_unused
nand_addr=0x700000
nandargs=setenv bootargs console=ttymxc0,115200 cma=64M root=/dev/mtdblock5 rootfstype=yaffs2,calibrate=${calibrate}
panel=TFT70AB
splashimage=0x83800000
update_from_sd=run update_nand;
update_nand=mmc rescan;fatload mmc 0 ${loadaddr} /bin/zImage; fatload mmc 0 ${initrd_addr} /bin/ramdisk.img.u; fatload mmc 0 ${fdt_addr} /bin/${fdt_file}; set bootargs console=${console},${baudrate} cma=64M rdinit=/linuxrc; bootz ${loadaddr} ${initrd_addr} ${fdt_addr};
Environment size: 1397/131068 bytes
=> 内核选项CONFIG_DEVTMPFS使能了没有？
感觉是内核有些选项没选上
我用过4.4.xx和4.14.xx内核都没问题 内核配置问题吧， 是不是选了 tmpfs 系统？ 猜测：
实际问题是mtdblock5 这个分区你的权限是 RO不是RW
导致root (yaffs2 filesystem) readonly。
jameszxj 发表于 2018-8-13 14:37
内核选项CONFIG_DEVTMPFS使能了没有？
感觉是内核有些选项没选上
我用过4.4.xx和4.14.xx内核都没问题 ...
好像是使能的，下面就是
根本不是 devtmpfs 的问题，最前面似乎是 dtb 有问题，最后一个是 rootfs 没有指明。 浮华一生 发表于 2018-8-13 14:37
内核配置问题吧， 是不是选了 tmpfs 系统？
内核配置挺多的，我也不太清楚。 浮华一生 发表于 2018-8-13 14:37
内核配置问题吧， 是不是选了 tmpfs 系统？
我刚才对比了一下，原来3.14的内核也有的。这个地方，两个内核配置一样。
kevinstar888 发表于 2018-8-13 14:38
猜测：
实际问题是mtdblock5 这个分区你的权限是 RO不是RW
导致root (yaffs2 filesystem) readonly。
关于文件系统权限问题，我在uboot环境下面，重新设过，不管是RO ,还是RW，都不行，结果是一样的。 abutter 发表于 2018-8-13 14:56
根本不是 devtmpfs 的问题，最前面似乎是 dtb 有问题，最后一个是 rootfs 没有指明。 ...
你是指这个么：[ 0.000000] Outdated DT detected, suspend/resume will NOT work
我没有改过设备树，首先设备树不是描述硬件信息的吗，我没有换硬件，那么久不需要改设备树了。
可是内核怎样读取设备树我就不知道了。 yick 发表于 2018-8-13 15:03
关于文件系统权限问题，我在uboot环境下面，重新设过，不管是RO ,还是RW，都不行，结果是一样的。 ...
这个分区大小是128K的整数倍吗，貌似不是整数倍，是不能被擦除的，也会被认为是RO权限 本帖最后由 dr2001 于 2018-8-13 15:17 编辑
1 做完文件系统之后，尝试mount一下，看能否正确mount上root fs。
2 需要在root fs上建立对应的基本目录，没有目录的话，kernel没办法(auto)mount的。
3 devtmpfs如果选择了auto mount，那么不需要自己再mount了，当然，此时如果自己的脚本再跑一遍也没关系。
这个不是root fs权限的问题，root是RO的照样可以mount一堆其它的东西，那只是一个挂载点。
文件系统大体需要这些基本目录：
/{bin,dev,etc,home,lib,mnt}
/{proc,sbin,sys}
/var/{tmp,run}
/usr/{bin,lib,sbin}
/root
/tmp
如果启动busybox的init以及busybox的基本应用，需要mount这些系统路径
mount -t proc none /proc
mount -t sysfs none /sys
mount -t devtmpfs none /dev
正常启动的话，考虑mount这些：
mount -t proc none /proc
mount -t sysfs none /sys
mount -t devtmpfs none /dev
mount -t tmpfs none /tmp
mkdir -p /dev/pts
mount -t devpts none /dev/pts
mkdir -p /dev/shm
mount -t tmpfs none /dev/shm
mount -t tmpfs none /var/tmp
mount -t tmpfs none /var/run kevinstar888 发表于 2018-8-13 15:10
这个分区大小是128K的整数倍吗，貌似不是整数倍，是不能被擦除的，也会被认为是RO权限 ...
你说的是这个吗 rootfs
[ 1.387197] nand: 256 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[ 1.395691] gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5
[ 1.402791] Scanning device for bad blocks
[ 1.597331] 6 ofpart partitions found on MTD device gpmi-nand
[ 1.603171] Creating 6 MTD partitions on "gpmi-nand":
[ 1.608265] 0x000000000000-0x000000400000 : "boot"
[ 1.615787] 0x000000400000-0x000000600000 : "logo"
[ 1.623299] 0x000000600000-0x000000700000 : "ENV"
[ 1.630597] 0x000000700000-0x000000a00000 : "DTB"
[ 1.637845] 0x000000a00000-0x000001200000 : "kernel"
[ 1.645466] 0x000001200000-0x000010000000 : "rootfs"
0x10000000 - 0x1200000 = 0xEE00000
(0xEE00000÷128)÷1024 = 1904。
好像是没问题的。 dr2001 发表于 2018-8-13 15:13
1 做完文件系统之后，尝试mount一下，看能否正确mount上root fs。
2 需要在root fs上建立对应的基本目录， ...
我用的是原来3.14配套的文件系统，整个过程就改变了内核，其它的都没变。
我把飞凌3.14内核打印日志也贴出来
U-Boot 2015.04-g3989e3c (Dec 14 2017 - 19:04:37)
CPU: Freescale i.MX6UL rev1.1 at 396 MHz
CPU: Temperature 42 C
Reset cause: POR
Board: MX6UL 14x14 EVK
I2C: ready
DRAM:256 MiB
NAND:256 MiB
MMC: FSL_SDHC: 0
*** Warning - bad CRC, using default environment
Display: TFT70AB (800x480)
Video: 800x480x24
NAND read: device 0 offset 0x400000, size 0x80000
524288 bytes read: OK
NAND read: device 0 offset 0x400000, size 0x80000
524288 bytes read: OK
display bmp cfb_console.c
In: serial
Out: serial
Err: serial
Net: FEC0
Error: FEC0 address not set.
Normal Boot
Hit any key to stop autoboot:0
nand boot..........
NAND read: device 0 offset 0xa00000, size 0x800000
8388608 bytes read: OK
NAND read: device 0 offset 0x700000, size 0x40000
262144 bytes read: OK
Kernel image @ 0x80800000 [ 0x000000 - 0x622460 ]
## Flattened Device Tree blob at 83000000
Booting using the fdt blob at 0x83000000
Using Device Tree in place at 83000000, end 8300c7c5
Starting kernel ...
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Linux version 3.14.38-6UL_ga (yhh@Ding) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #1 SMP PREEMPT Wed Aug 8 08:26:13 CST 2018
[ 0.000000] CPU: ARMv7 Processor revision 5 (ARMv7), cr=10c53c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[ 0.000000] Machine model: Freescale i.MX6 UltraLite 14x14 EVK Board
[ 0.000000] cma: CMA: reserved 64 MiB at 8c000000
[ 0.000000] Memory policy: Data cache writealloc
[ 0.000000] PERCPU: Embedded 8 pages/cpu @8bdbf000 s8832 r8192 d15744 u32768
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.Total pages: 60928
[ 0.000000] Kernel command line: console=ttymxc0,115200 cma=64M root=/dev/mtdblock5 rootfstype=yaffs2,calibrate=y
[ 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] Memory: 165640K/245760K available (7922K kernel code, 481K rwdata, 2788K rodata, 396K init, 433K bss, 80120K 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 : 0x90800000 - 0xff000000 (1768 MB)
[ 0.000000] lowmem: 0x80000000 - 0x90000000 ( 256 MB)
[ 0.000000] pkmap : 0x7fe00000 - 0x80000000 ( 2 MB)
[ 0.000000] modules : 0x7f000000 - 0x7fe00000 (14 MB)
[ 0.000000] .text : 0x80008000 - 0x80a7dcf8 (10712 kB)
[ 0.000000] .init : 0x80a7e000 - 0x80ae1280 ( 397 kB)
[ 0.000000] .data : 0x80ae2000 - 0x80b5a760 ( 482 kB)
[ 0.000000] .bss : 0x80b5a76c - 0x80bc6cf4 ( 434 kB)
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000]RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=1.
[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=1
[ 0.000000] NR_IRQS:16 nr_irqs:16 16
[ 0.000000] Switching to timer-based delay loop
[ 0.000021] sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655765682ns
[ 0.002768] clocksource_of_init: no matching clocksources found
[ 0.003135] Console: colour dummy device 80x30
[ 0.003183] Calibrating delay loop (skipped), value calculated using timer frequency.. 6.00 BogoMIPS (lpj=30000)
[ 0.003216] pid_max: default: 32768 minimum: 301
[ 0.003606] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.003637] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[ 0.005174] Initializing cgroup subsys net_cls
[ 0.005262] CPU: Testing write buffer coherency: ok
[ 0.005759] /cpus/cpu@0 missing clock-frequency property
[ 0.005801] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 0.005861] Setting up static identity map for 0x807855f8 - 0x80785650
[ 0.040763] Brought up 1 CPUs
[ 0.040799] SMP: Total of 1 processors activated (6.00 BogoMIPS).
[ 0.040815] CPU: All CPU(s) started in SVC mode.
[ 0.042118] devtmpfs: initialized
[ 0.052537] VFP support v0.3: implementor 41 architecture 2 part 30 variant 7 rev 5
[ 0.053316] pinctrl core: initialized pinctrl subsystem
[ 0.054257] regulator-dummy: no parameters
[ 0.059566] NET: Registered protocol family 16
[ 0.076192] DMA: preallocated 256 KiB pool for atomic coherent allocations
[ 0.077798] cpuidle: using governor ladder
[ 0.077830] cpuidle: using governor menu
[ 0.078198] Use WDOG1 as reset source
[ 0.096549] syscon 20c8000.anatop: regmap registered
[ 0.097256] vdd3p0: 2625 <--> 3400 mV at 3000 mV
[ 0.098129] cpu: 725 <--> 1450 mV at 1150 mV
[ 0.098968] vddsoc: 725 <--> 1450 mV at 1175 mV
[ 0.104224] syscon 20e4000.iomuxc-gpr: regmap registered
[ 0.111011] syscon 21ac000.romcp: regmap registered
[ 0.112553] syscon 21bc000.ocotp-ctrl: regmap registered
[ 0.119730] hw-breakpoint: found 5 (+1 reserved) breakpoint and 4 watchpoint registers.
[ 0.119761] hw-breakpoint: maximum watchpoint size is 8 bytes.
[ 0.123846] imx6ul-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
[ 0.126846] 20dc000.gpc supply pu not found, using dummy regulator
[ 0.162015] bio: create slab <bio-0> at 0
[ 0.168610] mxs-dma 1804000.dma-apbh: initialized
[ 0.169570] can-3v3: 3300 mV
[ 0.170121] VSD_3V3: 3300 mV
[ 0.170913] usb_otg1_vbus: 5000 mV
[ 0.171467] vref-3v3: 3300 mV
[ 0.172989] gpio_dvfs: 1300 <--> 1400 mV at 1400 mV
[ 0.174283] i2c-core: driver using legacy suspend method
[ 0.174308] i2c-core: driver using legacy resume method
[ 0.175533] SCSI subsystem initialized
[ 0.176781] usbcore: registered new interface driver usbfs
[ 0.176970] usbcore: registered new interface driver hub
[ 0.177303] usbcore: registered new device driver usb
[ 0.183089] i2c i2c-0: IMX I2C adapter registered
[ 0.185559] i2c i2c-1: IMX I2C adapter registered
[ 0.185857] Linux video capture interface: v2.00
[ 0.186062] pps_core: LinuxPPS API ver. 1 registered
[ 0.186083] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[ 0.186145] PTP clock support registered
[ 0.188729] MIPI CSI2 driver module loaded
[ 0.189288] Advanced Linux Sound Architecture Driver Initialized.
[ 0.191260] Bluetooth: Core ver 2.18
[ 0.191397] NET: Registered protocol family 31
[ 0.191419] Bluetooth: HCI device and connection manager initialized
[ 0.191460] Bluetooth: HCI socket layer initialized
[ 0.191493] Bluetooth: L2CAP socket layer initialized
[ 0.191604] Bluetooth: SCO socket layer initialized
[ 0.193592] Switched to clocksource mxc_timer1
[ 0.195195] cfg80211: Calling CRDA to update world regulatory domain
[ 0.219214] NET: Registered protocol family 2
[ 0.221212] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.221306] TCP bind hash table entries: 2048 (order: 2, 16384 bytes)
[ 0.221397] TCP: Hash tables configured (established 2048 bind 2048)
[ 0.221515] TCP: reno registered
[ 0.221550] UDP hash table entries: 256 (order: 1, 8192 bytes)
[ 0.221611] UDP-Lite hash table entries: 256 (order: 1, 8192 bytes)
[ 0.222179] NET: Registered protocol family 1
[ 0.222931] RPC: Registered named UNIX socket transport module.
[ 0.222962] RPC: Registered udp transport module.
[ 0.222979] RPC: Registered tcp transport module.
[ 0.222995] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.225882] imx rpmsg driver is registered.
[ 0.227498] Bus freq driver module loaded
[ 0.229484] futex hash table entries: 256 (order: 2, 16384 bytes)
[ 0.249116] VFS: Disk quotas dquot_6.5.2
[ 0.249815] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 0.255885] NFS: Registering the id_resolver key type
[ 0.255994] Key type id_resolver registered
[ 0.256015] Key type id_legacy registered
[ 0.256102] jffs2: version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
[ 0.257964] fuse init (API version 7.22)
[ 0.259236] msgmni has been set to 451
[ 0.267547] io scheduler noop registered
[ 0.267579] io scheduler deadline registered
[ 0.268081] io scheduler cfq registered (default)
[ 0.269121] imx-weim 21b8000.weim: Driver registered.
[ 0.274965] backlight.9 supply power not found, using dummy regulator
[ 0.278097] MIPI DSI driver module loaded
[ 0.282421] 21c8000.lcdif supply lcd not found, using dummy regulator
[ 0.282821] mxsfb 21c8000.lcdif: failed to find mxc display driver
[ 0.283757] mxsfb 21c8000.lcdif: initialized
[ 0.290944] imx-sdma 20ec000.sdma: no event needs to be remapped
[ 0.291153] imx-sdma 20ec000.sdma: loaded firmware 3.1
[ 0.299701] imx-sdma 20ec000.sdma: initialized
[ 0.301195] Serial: IMX driver
[ 0.301843] 2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 58, base_baud = 5000000) is a IMX
[ 1.042118] console enabled
[ 1.047639] 21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 59, base_baud = 5000000) is a IMX
[ 1.057538] 21ec000.serial: ttymxc2 at MMIO 0x21ec000 (irq = 60, base_baud = 5000000) is a IMX
[ 1.067183] serial: Freescale lpuart driver
[ 1.075406] imx sema4 driver is registered.
[ 1.079772] Initialized drm 1.1.0 20060810
[ 1.085575] Initialized vivante 1.0.0 20120216 on minor 0
[ 1.113177] brd: module loaded
[ 1.128056] loop: module loaded
[ 1.134913] spi_gpio spi4.15: gpio-miso property not found, switching to no-rx mode
[ 1.147150] CAN device driver interface
[ 1.154505] flexcan 2090000.can: device registered (reg_base=90968000, irq=142)
[ 1.164706] flexcan 2094000.can: device registered (reg_base=90970000, irq=143)
[ 1.174275] 20b4000.ethernet supply phy not found, using dummy regulator
[ 1.182305] pps pps0: new PPS source ptp0
[ 1.186912] fec 20b4000.ethernet (unregistered net_device): Invalid MAC address: 00:00:00:00:00:00
[ 1.196106] fec 20b4000.ethernet (unregistered net_device): Using random MAC address: 02:82:48:42:41:90
[ 1.206259] libphy: fec_enet_mii_bus: probed
[ 1.214403] fec 20b4000.ethernet eth0: registered PHC device 0
[ 1.221885] 2188000.ethernet supply phy not found, using dummy regulator
[ 1.229998] pps pps1: new PPS source ptp1
[ 1.234581] fec 2188000.ethernet (unregistered net_device): Invalid MAC address: 00:00:00:00:00:00
[ 1.243787] fec 2188000.ethernet (unregistered net_device): Using random MAC address: fa:35:e9:bc:4f:47
[ 1.255253] fec 2188000.ethernet eth1: registered PHC device 1
[ 1.262730] PPP generic driver version 2.4.2
[ 1.267723] PPP BSD Compression module registered
[ 1.272471] PPP Deflate Compression module registered
[ 1.277842] usbcore: registered new interface driver asix
[ 1.283397] usbcore: registered new interface driver cdc_ether
[ 1.289438] usbcore: registered new interface driver cdc_eem
[ 1.295386] usbcore: registered new interface driver cdc_ncm
[ 1.301080] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 1.307676] ehci-mxc: Freescale On-Chip EHCI Host driver
[ 1.313453] usbcore: registered new interface driver usb-storage
[ 1.319869] usbcore: registered new interface driver usbserial
[ 1.325930] usbcore: registered new interface driver usbserial_generic
[ 1.332591] usbserial: USB Serial support registered for generic
[ 1.338791] usbcore: registered new interface driver ftdi_sio
[ 1.344709] usbserial: USB Serial support registered for FTDI USB Serial Device
[ 1.352162] usbcore: registered new interface driver option
[ 1.357909] usbserial: USB Serial support registered for GSM modem (1-port)
[ 1.365038] usbcore: registered new interface driver pl2303
[ 1.370731] usbserial: USB Serial support registered for pl2303
[ 1.376872] usbcore: registered new interface driver cdc_xr_usb_serial
[ 1.383430] xr_usb_serial_common: Exar USB UART (serial port) driver
[ 1.389971] usbcore: registered new interface driver usb_ehset_test
[ 1.398597] 2184800.usbmisc supply vbus-wakeup not found, using dummy regulator
[ 1.413559] 2184200.usb supply vbus not found, using dummy regulator
[ 1.423913] ci_hdrc ci_hdrc.1: EHCI Host Controller
[ 1.428899] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
[ 1.453690] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
[ 1.461158] hub 1-0:1.0: USB hub found
[ 1.465139] hub 1-0:1.0: 1 port detected
[ 1.471330] mousedev: PS/2 mouse device common for all mice
[ 1.479058] input: 20cc000.snvs-pwrkey as /devices/soc0/soc.0/2000000.aips-bus/20cc000.snvs-pwrkey/input/input0
[ 1.489946] snvs_pwrkey 20cc000.snvs-pwrkey: i.MX snvs powerkey probed
[ 1.497478] edt_ft5x06 0-0038: touchscreen probe failed
[ 1.502776] edt_ft5x06: probe of 0-0038 failed with error -5
[ 1.510661] input: iMX6UL TouchScreen Controller as /devices/virtual/input/input2
[ 1.520243] <<-GTP-INFO->> GTP driver installing...
[ 1.525672] <<-GTP-INFO->> GTP Driver Version: V2.4<2014/11/28>
[ 1.531633] <<-GTP-INFO->> GTP Driver Built@19:48:53, Aug7 2018
[ 1.537860] <<-GTP-INFO->> GTP I2C Address: 0x14
[ 1.543620] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.550523] <<-GTP-ERROR->> GTP i2c test failed time 1.
[ 1.574687] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.581588] <<-GTP-ERROR->> GTP i2c test failed time 2.
[ 1.604700] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.611599] <<-GTP-ERROR->> GTP i2c test failed time 3.
[ 1.634673] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.641570] <<-GTP-ERROR->> GTP i2c test failed time 4.
[ 1.664884] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.671785] <<-GTP-ERROR->> GTP i2c test failed time 5.
[ 1.693626] <<-GTP-ERROR->> I2C read failed.
[ 1.698076] <<-GTP-INFO->> GTP Driver Version: V2.4<2014/11/28>
[ 1.704074] <<-GTP-INFO->> GTP Driver Built@19:48:53, Aug7 2018
[ 1.710194] <<-GTP-INFO->> GTP I2C Address: 0x5d
[ 1.715879] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.722818] <<-GTP-ERROR->> GTP i2c test failed time 1.
[ 1.744724] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.751627] <<-GTP-ERROR->> GTP i2c test failed time 2.
[ 1.774622] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.781521] <<-GTP-ERROR->> GTP i2c test failed time 3.
[ 1.786907] usb 1-1: new high-speed USB device number 2 using ci_hdrc
[ 1.804658] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.811559] <<-GTP-ERROR->> GTP i2c test failed time 4.
[ 1.834675] <<-GTP-ERROR->> I2C Read: 0x8047, 1 bytes failed, errcode: -5!
[ 1.841574] <<-GTP-ERROR->> GTP i2c test failed time 5.
[ 1.863614] <<-GTP-ERROR->> I2C read failed.
[ 1.868315] i2c-core: driver using legacy suspend method
[ 1.874661] i2c-core: driver using legacy resume method
[ 1.884554] rtc-rx8010 0-0032: Frequency stop was detected, probably due to a supply voltage drop
[ 1.893469] rtc-rx8010 0-0032: Update timer was detected
[ 1.899801] rtc-rx8010 0-0032: bad conditions detected, resetting date
[ 1.911333] rtc-rx8010 0-0032: rtc core: registered rx8010 as rtc0
[ 1.919346] snvs_rtc 20cc034.snvs-rtc-lp: rtc core: registered 20cc034.snvs-rtc-lp as rtc1
[ 1.928121] i2c /dev entries driver
[ 1.932930] IR NEC protocol handler initialized
[ 1.937591] IR RC5(x) protocol handler initialized
[ 1.942410] IR RC6 protocol handler initialized
[ 1.947106] IR JVC protocol handler initialized
[ 1.951825] IR Sony protocol handler initialized
[ 1.956630] IR RC5 (streamzap) protocol handler initialized
[ 1.963353] IR SANYO protocol handler initialized
[ 1.968743] hub 1-1:1.0: USB hub found
[ 1.972643] IR MCE Keyboard/mouse protocol handler initialized
[ 1.978648] hub 1-1:1.0: 4 ports detected
[ 1.987176] pxp-v4l2 pxp_v4l2.10: initialized
[ 1.992010] usbcore: registered new interface driver uvcvideo
[ 1.997974] USB Video Class driver (1.1.1)
[ 2.004064] i2c-core: driver using legacy suspend method
[ 2.010320] i2c-core: driver using legacy resume method
[ 2.017616] imx2-wdt 20bc000.wdog: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=0)
[ 2.026251] Bluetooth: HCI UART driver ver 2.2
[ 2.030763] Bluetooth: HCI H4 protocol initialized
[ 2.035628] Bluetooth: HCI BCSP protocol initialized
[ 2.040616] Bluetooth: HCIATH3K protocol initialized
[ 2.045949] usbcore: registered new interface driver bcm203x
[ 2.051825] usbcore: registered new interface driver btusb
[ 2.057621] usbcore: registered new interface driver ath3k
[ 2.063314] usbcore: registered new interface driver rtk_btusb
[ 2.069815] sdhci: Secure Digital Host Controller Interface driver
[ 2.076080] sdhci: Copyright(c) Pierre Ossman
[ 2.080463] sdhci-pltfm: SDHCI platform and OF driver helper
[ 2.089706] mmc0: no vqmmc regulator found
[ 2.133670] mmc0: SDHCI controller on 2190000.usdhc using ADMA
[ 2.188520] nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xda
[ 2.195001] nand: Micron MT29F2G08ABAEAWP
[ 2.199043] nand: 256MiB, SLC, page size: 2048, OOB size: 64
[ 2.205477] gpmi-nand 1806000.gpmi-nand: enable the asynchronous EDO mode 5
[ 2.212486] Scanning device for bad blocks
[ 2.523134] 6 ofpart partitions found on MTD device gpmi-nand
[ 2.528960] Creating 6 MTD partitions on "gpmi-nand":
[ 2.534081] 0x000000000000-0x000000400000 : "boot"
[ 2.541587] 0x000000400000-0x000000600000 : "logo"
[ 2.549052] 0x000000600000-0x000000700000 : "ENV"
[ 2.556423] 0x000000700000-0x000000a00000 : "DTB"
[ 2.563966] 0x000000a00000-0x000001200000 : "kernel"
[ 2.571615] 0x000001200000-0x000010000000 : "rootfs"
[ 2.579639] gpmi-nand 1806000.gpmi-nand: driver registered.
[ 2.589705] usbcore: registered new interface driver usbhid
[ 2.595412] usbhid: USB HID core driver
[ 2.612824] fsl-asrc 2034000.asrc: driver registered
[ 2.627249] snd-soc-dummy snd-soc-dummy: ASoC: Failed to create platform debugfs directory
[ 2.636736] imx-wm8960 sound.14: wm8960-hifi <-> 202c000.sai mapping ok
[ 2.645034] imx-wm8960 sound.14: snd-soc-dummy-dai <-> 2034000.asrc mapping ok
[ 2.652493] imx-wm8960 sound.14: wm8960-hifi <-> 202c000.sai mapping ok
[ 2.669988] NET: Registered protocol family 26
[ 2.674590] Netfilter messages via NETLINK v0.30.
[ 2.679373] nfnl_acct: registering with nfnetlink.
[ 2.684363] nf_conntrack version 0.5.0 (3612 buckets, 14448 max)
[ 2.691625] ctnetlink v0.93: registering with nfnetlink.
[ 2.697375] nf_tables: (c) 2007-2009 Patrick McHardy <kaber@trash.net>
[ 2.704012] nf_tables_compat: (c) 2012 Pablo Neira Ayuso <pablo@netfilter.org>
[ 2.711734] xt_time: kernel timezone is -0000
[ 2.716870] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 2.722643] ipt_CLUSTERIP: ClusterIP Version 0.8 loaded successfully
[ 2.729227] arp_tables: (C) 2002 David S. Miller
[ 2.734181] TCP: cubic registered
[ 2.738805] NET: Registered protocol family 10
[ 2.745596] sit: IPv6 over IPv4 tunneling driver
[ 2.751811] NET: Registered protocol family 17
[ 2.756521] can: controller area network core (rev 20120528 abi 9)
[ 2.762901] NET: Registered protocol family 29
[ 2.767560] can: raw protocol (rev 20120528)
[ 2.771863] can: broadcast manager protocol (rev 20120528 t)
[ 2.777673] can: netlink gateway (rev 20130117) max_hops=1
[ 2.783885] Bluetooth: RFCOMM TTY layer initialized
[ 2.788843] Bluetooth: RFCOMM socket layer initialized
[ 2.794220] Bluetooth: RFCOMM ver 1.11
[ 2.798024] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 2.803361] Bluetooth: BNEP filters: protocol multicast
[ 2.808688] Bluetooth: BNEP socket layer initialized
[ 2.813719] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 2.819689] Bluetooth: HIDP socket layer initialized
[ 2.824830] 8021q: 802.1Q VLAN Support v1.8
[ 2.829187] Key type dns_resolver registered
[ 2.835138] cpu cpu0: dev_pm_opp_get_opp_count: device OPP not found (-19)
[ 2.857809] gpio_dvfs: disabling
[ 2.861085] vref-3v3: disabling
[ 2.864372] usb_otg1_vbus: disabling
[ 2.867975] VSD_3V3: disabling
[ 2.871051] can-3v3: disabling
[ 2.874697] regulator-dummy: disabling
[ 2.878949] imx mcc test is registered.
[ 2.884825] rtc-rx8010 0-0032: setting system clock to 1970-01-01 00:00:00 UTC (0)
[ 2.911266] ALSA device list:
[ 2.914366] #0: wm8960-audio
[ 2.918378] yaffs: dev is 32505861 name is "mtdblock5" ro
[ 2.923997] yaffs: passed flags ""
[ 3.001622] random: nonblocking pool is initialized
[ 3.158019] VFS: Mounted root (yaffs2 filesystem) readonly on device 31:5.
[ 3.165535] devtmpfs: mounted
[ 3.169358] Freeing unused kernel memory: 396K (80a7e000 - 80ae1000)
Mounting /proc and /sys
Starting the hotplug events dispatcher udevd
Synthesizing initial hotplug even[ 3.569806] udevd (99): /proc/99/oom_adj is deprecated, please use /proc/99/oom_score_adj instead.
ts
Setting the hostname to freescale
Running depmod
depmod: can't change directory to '3.14.38-6UL_ga': No such file or directory
Mounting filesystems
Starting inetd:
Starting syslogd and klogd
[ 8.120883] flexcan 2090000.can can0: writing ctrl=0x0e312085
[ 8.147435] flexcan 2094000.can can1: writing ctrl=0x0e312085
Reconfiguring network interfaces... ifdown: interface lo not configured
ifdown: interface eth0 not configured
ifdown: interface eth1 not configured
[ 8.354451] fec 20b4000.ethernet eth0: Freescale FEC PHY driver (mii_bus:phy_addr=20b4000.ethernet:01, irq=-1)
[ 8.404265] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 8.564849] fec 2188000.ethernet eth1: Freescale FEC PHY driver (mii_bus:phy_addr=20b4000.ethernet:02, irq=-1)
[ 8.604320] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
RTNETLINK answers: File exists
done.
alsactl: parse:1655: Unable to open file '/data0/imx6_linux/alsa/tmp/share/alsa/init/00main': No such file or directory
alsactl: set_control:1267: failed to obtain info for control #55 (No such file or directory)
[ 8.837538] Trying to free nonexistent resource <0000000087b00000-0000000087c76fff>
Copyright (C) 2006-2016 Forlinx Embedded Technology Co., Ltd All Rights Reservedwww.forlinx.com
freescale login: [ 9.114052] usb 1-1.4: new high-speed USB device number 3 using ci_hdrc
Copyright (C) 2006-2016 Forlinx Embedded Technology Co., Ltd All Rights Reservedwww.forlinx.com
freescale login:
有freescale login:的表示成功了，4.1内核也是用的这个文件系统。
我用过这个板子，都是重头移植的，boot，内核，dtb 和文件系统。个人觉得，设备树和内核是耦合在一块的，并非跟硬件绑在一块的。 yick 发表于 2018-8-13 15:33
我用的是原来3.14配套的文件系统，整个过程就改变了内核，其它的都没变。
我把飞凌3.14内核打印日志也贴 ...
Linux Errno：
#define ENOENT 2 /* No such file or directory */
考虑检查rootfs的目录结构 设备树没更新么？
你把3X里面的设备树源文件考到4x里面修改makefile 编译出来放进去
感觉应该是设备数没更新导致nand没有正确启动读取不了文件系统
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