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mx6-VFS: Cannot open root device "mmcblk0p1" or unknown-block(0,0)

Question asked by cody ou on Apr 22, 2014
Latest reply on Apr 22, 2014 by Kirill Brilliantov

My custom board (mx6) is booting from emmc, loading kernel image from emmc ,but:

VFS: Cannot open root device "mmcblk0p1" or unknown-block(0,0)



U-Boot 2009.08 ( 2014  4鏈16 - 18:09:24)



CPU: Freescale i.MX6 family TO1.1 at 792 MHz

Thermal sensor with ratio = 180

Temperature:   47 C, calibration data 0x5734f85f

mx6q pll1: 792MHz

mx6q pll2: 528MHz

mx6q pll3: 480MHz

mx6q pll8: 50MHz

ipg clock     : 66000000Hz

ipg per clock : 66000000Hz

uart clock    : 80000000Hz

cspi clock    : 60000000Hz

ahb clock     : 132000000Hz

axi clock   : 198000000Hz

emi_slow clock: 99000000Hz

ddr clock     : 396000000Hz

usdhc1 clock  : 198000000Hz

usdhc2 clock  : 198000000Hz

usdhc3 clock  : 198000000Hz

usdhc4 clock  : 198000000Hz

nfc clock     : 24000000Hz

Board: i.MX6DL/Solo-SABRESD: mx6q_sabresd_aaron Board: 0x61011 [POR ]

Boot Device: MMC

I2C:   ready

DRAM:   1 GB


In:    serial

Out:   serial

Err:   serial

i2c: I2C3 SDA is low, start i2c recovery...

I2C3 Recovery failed, I2C1 SDA still low!!!

Net:   got MAC address from IIM: 00:00:00:00:00:00


Hit any key to stop autoboot:  0

MX6SDL SABRESD U-Boot > setenv bootargs_mmc 'setenv bootargs ${bootargs} root=/dev/mmcblk0p1 rootdelay=3 rw'


MX6SDL SABRESD U-Boot > saveenv

Saving Environment to MMC...

Writing to MMC(2)... done

MX6SDL SABRESD U-Boot > run  bootcmd

mmc2(part 0) is current device



MMC read: dev # 2, block # 2048, count 8192 ... 8192 blocks read: OK

## Booting kernel from Legacy Image at 10800000 ...

   Image Name:   Linux-3.0.35-aaron-2666-gbdde708

   Image Type:   ARM Linux Kernel Image (uncompressed)

   Data Size:    3862696 Bytes =  3.7 MB

   Load Address: 10008000

   Entry Point:  10008000

   Verifying Checksum ... OK

   Loading Kernel Image ... OK




Starting kernel ...



Uncompressing Linux... done, booting the kernel.

Linux version 3.0.35-aaron-2666-gbdde708 (aaron@aaron) (gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 -- Built at 2011/08/10 09:20) ) #11 SMP PREEMPT Mon Apr 21 11:16:55 CST 2014

CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c53c7d

CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache

Machine: Freescale i.MX 6Quad/DualLite/Solo Sabre-SD Board

Ignoring unrecognised tag 0x54410008

Memory policy: ECC disabled, Data cache writealloc

CPU identified as i.MX6DL/SOLO, silicon rev 1.1

PERCPU: Embedded 7 pages/cpu @8c008000 s5440 r8192 d15040 u32768

Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 194560

Kernel command line: console=ttymxc0,115200 root=/dev/mmcblk0p1 rootdelay=3 rw

PID hash table entries: 4096 (order: 2, 16384 bytes)

Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)

Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)

Memory: 512MB 256MB = 768MB total

Memory: 765828k/765828k available, 282748k reserved, 0K highmem

Virtual kernel memory layout:

    vector  : 0xffff0000 - 0xffff1000   (   4 kB)

    fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)

    DMA     : 0xf4600000 - 0xffe00000   ( 184 MB)

    vmalloc : 0xc0800000 - 0xf2000000   ( 792 MB)

    lowmem  : 0x80000000 - 0xc0000000   (1024 MB)

    pkmap   : 0x7fe00000 - 0x80000000   (   2 MB)

    modules : 0x7f000000 - 0x7fe00000   (  14 MB)

      .init : 0x80008000 - 0x8003c000   ( 208 kB)

      .text : 0x8003c000 - 0x80a8f8d4   (10575 kB)

      .data : 0x80a90000 - 0x80af3de0   ( 400 kB)

       .bss : 0x80af3e04 - 0x80b41d0c   ( 312 kB)

SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=2, Nodes=1

Preemptible hierarchical RCU implementation.


MXC GPIO hardware

sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655ms

Set periph_clk's parent to pll2_pfd_400M!


MXC_Early serial console at MMIO 0x2020000 (options '115200')

bootconsole [ttymxc0] enabled

Console: colour dummy device 80x30

Calibrating delay loop... 1581.05 BogoMIPS (lpj=7905280)

pid_max: default: 32768 minimum: 301

Mount-cache hash table entries: 512

CPU: Testing write buffer coherency: ok

hw perfevents: enabled with ARMv7 Cortex-A9 PMU driver, 7 counters available

CPU1: Booted secondary processor

Brought up 2 CPUs

SMP: Total of 2 processors activated (3162.11 BogoMIPS).

print_constraints: dummy:

NET: Registered protocol family 16

print_constraints: vddpu: 725 <--> 1300 mV at 700 mV fast normal

print_constraints: vddcore: 725 <--> 1300 mV at 1150 mV fast normal

print_constraints: vddsoc: 725 <--> 1300 mV at 1200 mV fast normal

print_constraints: vdd2p5: 2000 <--> 2775 mV at 2400 mV fast normal

print_constraints: vdd1p1: 800 <--> 1400 mV at 1100 mV fast normal

print_constraints: vdd3p0: 2625 <--> 3400 mV at 3000 mV fast normal

hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.

hw-breakpoint: 1 breakpoint(s) reserved for watchpoint single-step.

hw-breakpoint: maximum watchpoint size is 4 bytes.

L310 cache controller enabled

l2x0: 16 ways, CACHE_ID 0x410000c8, AUX_CTRL 0x02050000, Cache size: 524288 B

bio: create slab <bio-0> at 0

mxs-dma mxs-dma-apbh: initialized

print_constraints: SPKVDD: 4200 mV

print_constraints: vmmc: 3300 mV

SCSI subsystem initialized

spi_imx imx6q-ecspi.0: probed

usbcore: registered new interface driver usbfs

usbcore: registered new interface driver hub

usbcore: registered new device driver usb

Freescale USB OTG Driver loaded, $Revision: 1.55 $

mc_pfuze 1-0008: recv failed!:-110,80

mc_pfuze: probe of 1-0008 failed with error -1

imx-ipuv3 imx-ipuv3.0: IPU DMFC NORMAL mode: 1(0~1), 5B(4,5), 5F(6,7)

mxc_mipi_csi2 mxc_mipi_csi2: i.MX MIPI CSI2 driver probed

mxc_mipi_csi2 mxc_mipi_csi2: i.MX MIPI CSI2 dphy version is 0x3130302a

MIPI CSI2 driver module loaded

Advanced Linux Sound Architecture Driver Version 1.0.24.

Bluetooth: Core ver 2.16

NET: Registered protocol family 31

Bluetooth: HCI device and connection manager initialized

Bluetooth: HCI socket layer initialized

Bluetooth: L2CAP socket layer initialized

Bluetooth: SCO socket layer initialized

cfg80211: Calling CRDA to update world regulatory domain

max17135 2-0048: PMIC MAX17135 for eInk display

i2c-core: driver [max17135] using legacy suspend method

i2c-core: driver [max17135] using legacy resume method

Switching to clocksource mxc_timer1

NET: Registered protocol family 2

IP route cache hash table entries: 32768 (order: 5, 131072 bytes)

TCP established hash table entries: 131072 (order: 8, 1048576 bytes)

TCP bind hash table entries: 65536 (order: 7, 786432 bytes)

TCP: Hash tables configured (established 131072 bind 65536)

TCP reno registered

UDP hash table entries: 512 (order: 2, 16384 bytes)

UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)

NET: Registered protocol family 1

RPC: Registered named UNIX socket transport module.

RPC: Registered udp transport module.

RPC: Registered tcp transport module.

RPC: Registered tcp NFSv4.1 backchannel transport module.

PMU: registered new PMU device of type 0

Static Power Management for Freescale i.MX6

wait mode is enabled for i.MX6

cpaddr = c0820000 suspend_iram_base=c08bc000

PM driver module loaded

IMX usb wakeup probe

add wake up source irq 75

IMX usb wakeup probe

cpu regulator mode:ldo_enable

i.MXC CPU frequency driver

JFFS2 version 2.2. (NAND) 漏 2001-2006 Red Hat, Inc.

msgmni has been set to 1495

alg: No test for stdrng (krng)

io scheduler noop registered

io scheduler deadline registered

io scheduler cfq registered (default)

mxc_mipi_dsi mxc_mipi_dsi: i.MX MIPI DSI driver probed

MIPI DSI driver module loaded

mxc_sdc_fb mxc_sdc_fb.0: register mxc display driver ldb

_regulator_get: get() with no identifier

imx-ipuv3 imx-ipuv3.0: IPU DMFC DP HIGH RESOLUTION: 1(0,1), 5B(2~5), 5F(6,7)

Console: switching to colour frame buffer device 128x48

mxc_sdc_fb mxc_sdc_fb.1: register mxc display driver ldb

imx-sdma imx-sdma: loaded firmware 1.1

imx-sdma imx-sdma: initialized

Serial: IMX driver

imx-uart.2: ttymxc2 at MMIO 0x21ec000 (irq = 60) is a IMX

imx-uart.0: ttymxc0 at MMIO 0x2020000 (irq = 58) is a IMX

console [ttymxc0] enabled, bootconsole disabled

console [ttymxc0] enabled, bootconsole disabled

loop: module loaded

m25p80 spi0.0: found m25p05-nonjedec, expected sst25vf016b

m25p80 spi0.0: m25p05-nonjedec (64 Kbytes)

Creating 2 MTD partitions on "m25p80":

0x000000000000-0x000000100000 : "bootloader"

mtd: partition "bootloader" extends beyond the end of device "m25p80" -- size truncated to 0x10000

0x000000010000-0x000000010000 : "kernel"

mtd: partition "kernel" is out of reach -- disabled

GPMI NAND driver registered. (IMX)

vcan: Virtual CAN interface driver

CAN device driver interface

flexcan netdevice driver

FEC Ethernet Driver

fec_enet_mii_bus: probed

ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver

imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00100000

fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller

fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1

fsl-ehci fsl-ehci.0: irq 75, io base 0x02184000

fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 1.00

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 1 port detected

add wake up source irq 72

fsl-ehci fsl-ehci.1: Freescale On-Chip EHCI Host Controller

fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 2

fsl-ehci fsl-ehci.1: irq 72, io base 0x02184200

fsl-ehci fsl-ehci.1: USB 2.0 started, EHCI 1.00

hub 2-0:1.0: USB hub found

hub 2-0:1.0: 1 port detected

Initializing USB Mass Storage driver...

usbcore: registered new interface driver usb-storage

USB Mass Storage support registered.

ARC USBOTG Device Controller driver (1 August 2005)

mousedev: PS/2 mouse device common for all mice

input: gpio-keys as /devices/platform/gpio-keys/input/input0

usb 2-1: new high speed USB device number 2 using fsl-ehci

hub 2-1:1.0: USB hub found

hub 2-1:1.0: 4 ports detected

egalax_ts 1-0004: egalax_ts: failed to read firmware version

egalax_ts: probe of 1-0004 failed with error -5

egalax_ts 2-0004: egalax_ts: failed to read firmware version

egalax_ts: probe of 2-0004 failed with error -5

elan - Read Hello Packet Failed

elan-touch: probe of 2-0010 failed with error -110

i2c-core: driver [isl29023] using legacy suspend method

i2c-core: driver [isl29023] using legacy resume method

snvs_rtc snvs_rtc.0: rtc core: registered snvs_rtc as rtc0

i2c /dev entries driver

Linux video capture interface: v2.00

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video16

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video17

mxc_v4l2_output mxc_v4l2_output.0: V4L2 device registered as video18

mag3110 2-000e: check mag3110 chip ID

mag3110 2-000e: read chip ID 0xffffff92 is not equal to 0xc4!

mag3110: probe of 2-000e failed with error -22

i2c-core: driver [mag3110] using legacy suspend method

i2c-core: driver [mag3110] using legacy resume method

mma8451 0-001c: read chip ID 0x1 is not equal to 0x1a or 0x2a!

mma8451: probe of 0-001c failed with error -22

imx2-wdt imx2-wdt.0: IMX2+ Watchdog Timer enabled. timeout=60s (nowayout=1)

Bluetooth: Virtual HCI driver ver 1.3

Bluetooth: HCI UART driver ver 2.2

Bluetooth: HCIATH3K protocol initialized

Bluetooth: Generic Bluetooth USB driver ver 0.6

usbcore: registered new interface driver btusb

sdhci: Secure Digital Host Controller Interface driver

sdhci: Copyright(c) Pierre Ossman

mmc0: SDHCI controller on platform [sdhci-esdhc-imx.3] using ADMA

mmc1: SDHCI controller on platform [sdhci-esdhc-imx.1] using ADMA

mmc2: SDHCI controller on platform [sdhci-esdhc-imx.2] using ADMA

mxc_vdoa mxc_vdoa: i.MX Video Data Order Adapter(VDOA) driver probed

VPU initialized

mxc_asrc registered

Galcore version

Thermal calibration data is 0x5734f85f

Thermal sensor with ratio = 180

Anatop Thermal registered as thermal_zone0

anatop_thermal_probe: default cooling device is cpufreq!

usbcore: registered new interface driver usbhid

usbhid: USB HID core driver

usbcore: registered new interface driver snd-usb-audio

mxc_hdmi_soc mxc_hdmi_soc.0: MXC HDMI Audio

Cirrus Logic CS42888 ALSA SoC Codec Driver

i2c-core: driver [cs42888] using legacy suspend method

i2c-core: driver [cs42888] using legacy resume method

imx-hdmi-soc-dai imx-hdmi-soc-dai.0: Failed: Load HDMI-video first.

wm8962 0-001a: Failed to get supply 'DCVDD': -19

wm8962 0-001a: Failed to request supplies: -19

wm8962 0-001a: asoc: failed to probe CODEC wm8962.0-001a: -19

asoc: failed to instantiate card wm8962-audio: -19

imx_3stack asoc driver

Initialize HDMI-audio failed. Load HDMI-video first!

ALSA device list:

  No soundcards found.

NET: Registered protocol family 26

TCP cubic registered

NET: Registered protocol family 17

can: controller area network core (rev 20090105 abi 8)

NET: Registered protocol family 29

can: raw protocol (rev 20090105)

can: broadcast manager protocol (rev 20090105 t)

Bluetooth: RFCOMM TTY layer initialized

Bluetooth: RFCOMM socket layer initialized

Bluetooth: RFCOMM ver 1.11

Bluetooth: BNEP (Ethernet Emulation) ver 1.3

Bluetooth: BNEP filters: protocol multicast

Bluetooth: HIDP (Human Interface Emulation) ver 1.2

lib80211: common routines for IEEE802.11 drivers

VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4

Bus freq driver module loaded--aaron

Bus freq driver Enabled


DVFS driver module loaded aaron

regulator_init_complete: SPKVDD: incomplete constraints, leaving on

snvs_rtc snvs_rtc.0: aaron   setting system clock to 1970-01-01 01:04:00 UTC (3840)

Waiting 3sec before mounting root device...

mmc2: new high speed DDR MMC card at address 0001

mmcblk0: mmc2:0001 SEM04G 3.68 GiB

mmcblk0boot0: mmc2:0001 SEM04G partition 1 1.00 MiB

mmcblk0boot1: mmc2:0001 SEM04G partition 2 1.00 MiB

mmcblk0: p1

mmcblk0boot1: unknown partition table

mmcblk0boot0: unknown partition table

VFS: Cannot open root device "mmcblk0p1" or unknown-block(0,0)

Please append a correct "root=" boot option; here are the available partitions:

1f00              64 mtdblock0  (driver?)

b300         3866624 aaron mmcblk0  driver: mmcblk

  b301         3856384 aaron mmcblk0p1 00000000-0000-0000-0000-000000000000

b310            1024 aaron mmcblk0boot1  (driver?)

b308            1024 aaron mmcblk0boot0  (driver?)

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

[<80048854>] (unwind_backtrace+0x0/0xf8) from [<8050a454>] (panic+0x74/0x18c)

[<8050a454>] (panic+0x74/0x18c) from [<80008ce8>] (mount_block_root+0x170/0x224)

[<80008ce8>] (mount_block_root+0x170/0x224) from [<80008e84>] (mount_root+0xe8/0x108)

[<80008e84>] (mount_root+0xe8/0x108) from [<80008fc4>] (prepare_namespace+0x120/0x178)

[<80008fc4>] (prepare_namespace+0x120/0x178) from [<800089b0>] (kernel_init+0x108/0x13c)

[<800089b0>] (kernel_init+0x108/0x13c) from [<80042aa4>] (kernel_thread_exit+0x0/0x8)

CPU1: stopping

[<80048854>] (unwind_backtrace+0x0/0xf8) from [<8003c324>] (do_IPI+0x150/0x17c)

[<8003c324>] (do_IPI+0x150/0x17c) from [<80041a0c>] (__irq_svc+0x4c/0xe8)

Exception stack(0xbffa7f90 to 0xbffa7fd8)

7f80:                                     80afb320 80000093 00000001 00000000

7fa0: bffa6000 80af3ec4 80aa5a70 80512958 80aa8e7c 412fc09a 00000000 00000000

7fc0: 00000000 bffa7fd8 8005076c 80042b04 40000013 ffffffff

[<80041a0c>] (__irq_svc+0x4c/0xe8) from [<80042b04>] (default_idle+0x24/0x28)

[<80042b04>] (default_idle+0x24/0x28) from [<80042d20>] (cpu_idle+0xe0/0x124)

[<80042d20>] (cpu_idle+0xe0/0x124) from [<10507294>] (0x10507294)