Hi,
I am using a beagleboard-XM. I have compiled a kernel 2.6.33.7 with default configurations.
Now I during kernel booting phase I am getting following kernel panic.
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
Can any body tell if this is due to some option in the .config file or I am missing something else.
Following is the system dump during booting process.
Regards
Texas Instruments X-Loader 1.5.0 (Mar 27 2011 - 17:37:56)
Beagle xM
Reading boot sector
Loading u-boot.bin from mmc
U-Boot 2011.03-rc1-00000-g9a3cc57-dirty (Apr 01 2011 - 17:41:42)
OMAP3630/3730-GP ES2.1, CPU-OPP2, L3-165MHz, Max CPU Clock 1 Ghz
OMAP3 Beagle board + LPDDR/NAND
I2C: ready
DRAM: 512 MiB
NAND: 0 MiB
MMC: OMAP SD/MMC: 0
*** Warning - readenv() failed, using default environment
In: serial
Out: serial
Err: serial
Beagle xM Rev C
No EEPROM on expansion board
Die ID #0b2800029ff800000163810c1402100f
Hit any key to stop autoboot: 0
The user button is currently NOT pressed.
SD/MMC found on device 0
reading uEnv.txt
134 bytes read
Loaded environment from uEnv.txt
Importing environment from mmc …
Loading file “/boot/uImage” from mmc device 0:2 (xxa2)
2125380 bytes read
Booting from mmc …
Booting kernel from Legacy Image at 80200000 …
Image Name: Linux-2.6.33.7-rt29
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2125316 Bytes = 2 MiB
Load Address: 80008000
Entry Point: 80008000
Verifying Checksum … OK
Loading Kernel Image … OK
OK
Starting kernel …
Uncompressing Linux… done, booting the kernel.
Linux version 2.6.33.7-rt29 (root@asusfer) (gcc version 4.5.3 20110223 (prerelea se) (GCC) ) #1 PREEMPT RT Wed Feb 1 17:03:57 CET 2012
CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
Machine: OMAP3 Beagle Board
Memory policy: ECC disabled, Data cache writeback
OMAP3630 ES1.0 (l2cache iva sgx neon isp )
SRAM: Mapped pa 0x40200000 to va 0xfe400000 size: 0x100000
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 130048
omapdss.def_disp=dvi root=/dev/mmcblk0p2 rw rootfstype=ext3 rootwait
Booting kernel: 0:8M' invalid for parameter omapfb.vram’
PID hash table entries: 2048 (order: 1, 8192 bytes)
Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
Memory: 256MB 256MB = 512MB total
Memory: 514944KB available (3724K code, 642K data, 144K init, 0K highmem)
Real-Time Preemption Support © 2004-2007 Ingo Molnar
Experimental preemptable hierarchical RCU implementation.
RCU-based detection of stalled CPUs is enabled.
NR_IRQS:402
Clocking rate (Crystal/Core/MPU): 26.0/332/600 MHz
Reprogramming SDRC clock to 332000000 Hz
GPMC revision 5.0
IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96 interrupts
Total of 96 interrupts on 1 active controller
OMAP GPIO hardware version 2.5
OMAP clockevent source: GPTIMER12 at 32768 Hz
Console: colour dummy device 80x30
console [tty0] enabled
Calibrating delay loop… 512.57 BogoMIPS (lpj=2002944)
Security Framework initialized
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
regulator: core version 0.5
NET: Registered protocol family 16
Found NAND on CS0
Registering NAND on CS0
*** Unable to set MPU rate
Switched to new clocking rate (Crystal/Core/MPU): 26.0/332/600 MHz
OMAP DMA hardware revision 5.0
bio: create slab at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
i2c_omap i2c_omap.1: bus 1 rev4.0 at 2600 kHz
twl4030: PIH (irq 7) chaining IRQs 368…375
twl4030: power (irq 373) chaining IRQs 376…383
twl4030: gpio (irq 368) chaining IRQs 384…401
regulator: VUSB1V5: 1500 mV normal standby
regulator: VUSB1V8: 1800 mV normal standby
regulator: VUSB3V1: 3100 mV normal standby
twl4030_usb twl4030_usb: Initialized TWL4030 USB module
regulator: VMMC1: 1850 <–> 3150 mV at 3000 mV normal standby
regulator: VDAC: 1800 mV normal standby
regulator: VDVI: 1800 mV normal standby
regulator: VSIM: 1800 <–> 3000 mV at 1800 mV normal standby
i2c_omap i2c_omap.3: bus 3 rev4.0 at 100 kHz
Switching to clocksource 32k_counter
musb_hdrc: version 6.0, musb-dma, otg (peripheral+host), debug=0
musb_hdrc: USB OTG mode controller at fa0ab000 using DMA, IRQ 92
NET: Registered protocol family 2
IP route cache hash table entries: 4096 (order: 2, 16384 bytes)
TCP established hash table entries: 16384 (order: 5, 131072 bytes)
TCP bind hash table entries: 16384 (order: 6, 458752 bytes)
TCP: Hash tables configured (established 16384 bind 16384)
TCP reno registered
UDP hash table entries: 256 (order: 2, 16384 bytes)
UDP-Lite hash table entries: 256 (order: 2, 16384 bytes)
NET: Registered protocol family 1
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
NetWinder Floating Point Emulator V0.97 (double precision)
VFS: Disk quotas dquot_6.5.2
Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 1006
alg: No test for stdrng (krng)
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
omapfb: configured for panel omap3beagle
omapfb: DISPC version 3.0 initialized
Console: switching to colour frame buffer device 128x48
omapfb: Framebuffer initialized. Total vram 1572864 planes 1
omapfb: Pixclock 64000 kHz hfreq 59.0 kHz vfreq 76.9 Hz
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
sched: RT throttling activated
serial8250.0: ttyS0 at MMIO 0x4806a000 (irq = 72) is a ST16654
serial8250.1: ttyS1 at MMIO 0x4806c000 (irq = 73) is a ST16654
serial8250.2: ttyS2 at MMIO 0x49020000 (irq = 74) is a ST16654
console [ttyS2] enabled
brd: module loaded
loop: module loaded
ehci_hcd: USB 2.0 ‘Enhanced’ Host Controller (EHCI) Driver
ehci-omap ehci-omap.0: OMAP-EHCI Host Controller
ehci-omap ehci-omap.0: new USB bus registered, assigned bus number 1
ehci-omap ehci-omap.0: irq 77, io mem 0x48064800
ehci-omap ehci-omap.0: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 3 ports detected
g_cdc gadget: using random self ethernet address
g_cdc gadget: using random host ethernet address
usb0: MAC 72:a4:36:9a:fa:39
usb0: HOST MAC 92:e9:3a:48:1e:1b
g_cdc gadget: CDC Composite Gadget, version: King Kamehameha Day 2008
g_cdc gadget: g_cdc ready
musb_hdrc musb_hdrc: MUSB HDRC host driver
musb_hdrc musb_hdrc: new USB bus registered, assigned bus number 2
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
i2c /dev entries driver
TCP cubic registered
NET: Registered protocol family 17
NET: Registered protocol family 15
Power Management for TI OMAP3.
VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
regulator_init_complete: incomplete constraints, leaving VDVI on
regulator_init_complete: incomplete constraints, leaving VDAC on
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
Root-NFS: No NFS server available, giving up.
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device “(null)” or unknown-block(2,0)
Please append a correct “root=” boot option; here are the available partitions:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
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