## Booting kernel from Legacy Image at 31000000 ...
Image Name: Linux-3.2.7
Created: 2012-03-02 16:42:25 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2293104 Bytes = 2.2 MB
Load Address: 30008000
Entry Point: 30008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Linux version 3.2.7 (root@wudl) (gcc version 4.4.3 (ctng-1.6.1) ) #30 Sat Mar 3
00:41:53 CST 2012
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
CPU: VIVT data cache, VIVT instruction cache
Machine: MINI2440
Warning: Neither atags nor dtb found
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C24XX Clocks, Copyright 2004 Simtec Electronics
S3C244X: core 405.000 MHz, memory 101.250 MHz, peripheral 50.625 MHz
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
Kernel command line: noinitrd root=/dev/nfs rw nfsroot=192.168.2.26:/temp/rootfs
ip=192.168.2.34:192.168.2.26:192.168.1.100:255.255.0.0:arm9:eth0:off console=tt
ySAC0,115200 init=/linuxrc mem=64M
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 60284k/60284k available, 5252k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc4800000 - 0xf6000000 ( 792 MB)
lowmem : 0xc0000000 - 0xc4000000 ( 64 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc040b0e8 (4109 kB)
.init : 0xc040c000 - 0xc042c000 ( 128 kB)
.data : 0xc042c000 - 0xc044f300 ( 141 kB)
.bss : 0xc044f324 - 0xc048a078 ( 236 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:85
irq: clearing subpending status 00000003
irq: clearing subpending status 00000002
Console: colour dummy device 80x30
Calibrating delay loop... 201.52 BogoMIPS (lpj=503808)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
MINI2440: Option string mini2440=0tb
MINI2440: 't' ignored, touchscreen not compiled in
MINI2440: LCD [0:240x320] 1:800x480 2:1024x768
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C244X: Clock Support, DVS off
bio: create slab <bio-0> at 0
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
s3c-i2c s3c2440-i2c: slave address 0x10
s3c-i2c s3c2440-i2c: bus frequency set to 98 KHz
s3c-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
Advanced Linux Sound Architecture Driver Version 1.0.24.
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 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.
nfs4filelayout_init: NFSv4 File Layout Driver Registering...
Installing knfsd (copyright (C) 1996
okir@monad.swb.de).
ROMFS MTD (C) 2007 Red Hat, Inc.
msgmni has been set to 117
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Console: switching to colour frame buffer device 60x53
fb0: s3c2410fb frame buffer device
s3c2440-uart.0: ttySAC0 at MMIO 0x50000000 (irq = 70) is a S3C2440
console [ttySAC0] enabled
s3c2440-uart.1: ttySAC1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: ttySAC2 at MMIO 0x50008000 (irq = 76) is a S3C2440
brd: module loaded
at24 0-0050: 1024 byte 24c08 EEPROM, writable, 16 bytes/write
dm9000 Ethernet Driver, V1.31
eth0: dm9000e at c4812300,c4814304 IRQ 51 MAC: 00:1a:4d:26:ba:5c (chip)
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
s3c2410-ohci s3c2410-ohci: S3C24XX OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
usbcore: registered new interface driver libusual
mousedev: PS/2 mouse device common for all mice
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c-rtc s3c2410-rtc: rtc disabled, re-enabling
s3c-rtc s3c2410-rtc: rtc core: registered s3c as rtc0
i2c /dev entries driver
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
s3c2410-wdt s3c2410-wdt: watchdog inactive, reset disabled, irq disabled
cpuidle: using governor ladder
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
s3c-sdi s3c2440-sdi: powered down.
s3c-sdi s3c2440-sdi: mmc0 - using pio, sw SDIO IRQ
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
ALSA device list:
No soundcards found.
TCP cubic registered
NET: Registered protocol family 17
Registering the dns_resolver key type
input: gpio-keys as /devices/platform/gpio-keys/input/input0
s3c-rtc s3c2410-rtc: setting system clock to 2000-01-02 06:22:53 UTC (946794173)
dm9000 dm9000: eth0: link down
IP-Config: Complete:
device=eth0, addr=192.168.2.34, mask=255.255.0.0, gw=192.168.1.100,
host=arm9, domain=, nis-domain=(none),
bootserver=192.168.2.26, rootserver=192.168.2.26, rootpath=
dm9000 dm9000: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
U-Boot 2008.10 (Mar 3 2012 - 00:39:22)
DRAM: 64 MB
Flash: 2 MB
In: serial
Out: serial
Err: serial
Mini2440 # tftp 31000000 uImage
dm9000 i/o: 0x20000300, id: 0x90000a46
DM9000: running in 16 bit mode
MAC: 00:1a:4d:26:ba:5c
TFTP from server 192.168.2.26; our IP address is 192.168.2.34
Filename 'uImage'.
Load address: 0x31000000
Loading: T #################################################################
#################################################################
###########################
done
Bytes transferred = 2293168 (22fdb0 hex)
Mini2440 # bootm
## Booting kernel from Legacy Image at 31000000 ...
Image Name: Linux-3.2.7
Created: 2012-03-02 16:42:25 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2293104 Bytes = 2.2 MB
Load Address: 30008000
Entry Point: 30008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Linux version 3.2.7 (root@wudl) (gcc version 4.4.3 (ctng-1.6.1) ) #30 Sat Mar 3
00:41:53 CST 2012
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
CPU: VIVT data cache, VIVT instruction cache
Machine: MINI2440
Warning: Neither atags nor dtb found
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C24XX Clocks, Copyright 2004 Simtec Electronics
S3C244X: core 405.000 MHz, memory 101.250 MHz, peripheral 50.625 MHz
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
Kernel command line: noinitrd root=/dev/nfs rw nfsroot=192.168.2.26:/temp/rootfs
ip=192.168.2.34:192.168.2.26:192.168.1.100:255.255.0.0:arm9:eth0:off console=tt
ySAC0,115200 init=/linuxrc mem=64M
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 60284k/60284k available, 5252k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc4800000 - 0xf6000000 ( 792 MB)
lowmem : 0xc0000000 - 0xc4000000 ( 64 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc040b0e8 (4109 kB)
.init : 0xc040c000 - 0xc042c000 ( 128 kB)
.data : 0xc042c000 - 0xc044f300 ( 141 kB)
.bss : 0xc044f324 - 0xc048a078 ( 236 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:85
irq: clearing subpending status 00000003
irq: clearing subpending status 00000002
Console: colour dummy device 80x30
Calibrating delay loop... 201.52 BogoMIPS (lpj=503808)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
MINI2440: Option string mini2440=0tb
MINI2440: 't' ignored, touchscreen not compiled in
MINI2440: LCD [0:240x320] 1:800x480 2:1024x768
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C244X: Clock Support, DVS off
bio: create slab <bio-0> at 0
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
s3c-i2c s3c2440-i2c: slave address 0x10
s3c-i2c s3c2440-i2c: bus frequency set to 98 KHz
s3c-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
Advanced Linux Sound Architecture Driver Version 1.0.24.
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 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.
nfs4filelayout_init: NFSv4 File Layout Driver Registering...
Installing knfsd (copyright (C) 1996
okir@monad.swb.de).
ROMFS MTD (C) 2007 Red Hat, Inc.
msgmni has been set to 117
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Console: switching to colour frame buffer device 60x53
fb0: s3c2410fb frame buffer device
s3c2440-uart.0: ttySAC0 at MMIO 0x50000000 (irq = 70) is a S3C2440
console [ttySAC0] enabled
s3c2440-uart.1: ttySAC1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: ttySAC2 at MMIO 0x50008000 (irq = 76) is a S3C2440
brd: module loaded
at24 0-0050: 1024 byte 24c08 EEPROM, writable, 16 bytes/write
dm9000 Ethernet Driver, V1.31
eth0: dm9000e at c4812300,c4814304 IRQ 51 MAC: 00:1a:4d:26:ba:5c (chip)
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
s3c2410-ohci s3c2410-ohci: S3C24XX OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
usbcore: registered new interface driver libusual
mousedev: PS/2 mouse device common for all mice
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c-rtc s3c2410-rtc: rtc disabled, re-enabling
s3c-rtc s3c2410-rtc: rtc core: registered s3c as rtc0
i2c /dev entries driver
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
s3c2410-wdt s3c2410-wdt: watchdog inactive, reset disabled, irq disabled
cpuidle: using governor ladder
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
s3c-sdi s3c2440-sdi: powered down.
s3c-sdi s3c2440-sdi: mmc0 - using pio, sw SDIO IRQ
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
ALSA device list:
No soundcards found.
TCP cubic registered
NET: Registered protocol family 17
Registering the dns_resolver key type
input: gpio-keys as /devices/platform/gpio-keys/input/input0
s3c-rtc s3c2410-rtc: setting system clock to 2000-01-02 06:26:54 UTC (946794414)
dm9000 dm9000: eth0: link down
IP-Config: Complete:
device=eth0, addr=192.168.2.34, mask=255.255.0.0, gw=192.168.1.100,
host=arm9, domain=, nis-domain=(none),
bootserver=192.168.2.26, rootserver=192.168.2.26, rootpath=
dm9000 dm9000: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
U-Boot 2008.10 (Mar 3 2012 - 00:39:22)
DRAM: 64 MB
Flash: 2 MB
In: serial
Out: serial
Err: serial
Mini2440 # printenv
bootdelay=3
baudrate=115200
gw=192.168.1.100
mask=255.255.0.0
ethaddr=00:1a:4d:26:ba:5c
ipaddr=192.168.2.34
serverip=192.168.2.26
bootserver=192.168.2.26
rootserver=192.168.2.26
bootargs="console=ttySAC0 root=/dev/nfs nfsroot=192.168.2.26:/home/user1/share i
p=192.168.2.34:192.168.2.26:192.168.1.100:255.255.0.0::eth0:off"
stdin=serial
stdout=serial
stderr=serial
Environment size: 364/65532 bytes
Mini2440 # setenv bootargs
Mini2440 # saveenv
Saving Environment to Flash...
Un-Protected 1 sectors
Erasing Flash...
done
Erased 1 sectors
Writing to Flash... done
Protected 1 sectors
Mini2440 # printenv
bootdelay=3
baudrate=115200
gw=192.168.1.100
mask=255.255.0.0
ethaddr=00:1a:4d:26:ba:5c
ipaddr=192.168.2.34
serverip=192.168.2.26
bootserver=192.168.2.26
rootserver=192.168.2.26
stdin=serial
stdout=serial
stderr=serial
Environment size: 219/65532 bytes
Mini2440 # tftp 31000000 uImage
dm9000 i/o: 0x20000300, id: 0x90000a46
DM9000: running in 16 bit mode
MAC: 00:1a:4d:26:ba:5c
TFTP from server 192.168.2.26; our IP address is 192.168.2.34
Filename 'uImage'.
Load address: 0x31000000
Loading: T #################################################################
#################################################################
###########################
done
Bytes transferred = 2293168 (22fdb0 hex)
Mini2440 # bootm
## Booting kernel from Legacy Image at 31000000 ...
Image Name: Linux-3.2.7
Created: 2012-03-02 16:42:25 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2293104 Bytes = 2.2 MB
Load Address: 30008000
Entry Point: 30008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Linux version 3.2.7 (root@wudl) (gcc version 4.4.3 (ctng-1.6.1) ) #30 Sat Mar 3
00:41:53 CST 2012
CPU: ARM920T [41129200] revision 0 (ARMv4T), cr=c0007177
CPU: VIVT data cache, VIVT instruction cache
Machine: MINI2440
Warning: Neither atags nor dtb found
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
S3C24XX Clocks, Copyright 2004 Simtec Electronics
S3C244X: core 405.000 MHz, memory 101.250 MHz, peripheral 50.625 MHz
CLOCK: Slow mode (1.500 MHz), fast, MPLL on, UPLL on
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256
Kernel command line: noinitrd root=/dev/nfs rw nfsroot=192.168.2.26:/temp/rootfs
ip=192.168.2.34:192.168.2.26:192.168.1.100:255.255.0.0:arm9:eth0:off console=tt
ySAC0,115200 init=/linuxrc mem=64M
PID hash table entries: 256 (order: -2, 1024 bytes)
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 64MB = 64MB total
Memory: 60284k/60284k available, 5252k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc4800000 - 0xf6000000 ( 792 MB)
lowmem : 0xc0000000 - 0xc4000000 ( 64 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc040b0e8 (4109 kB)
.init : 0xc040c000 - 0xc042c000 ( 128 kB)
.data : 0xc042c000 - 0xc044f300 ( 141 kB)
.bss : 0xc044f324 - 0xc048a078 ( 236 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:85
irq: clearing subpending status 00000003
irq: clearing subpending status 00000002
Console: colour dummy device 80x30
Calibrating delay loop... 201.52 BogoMIPS (lpj=503808)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
MINI2440: Option string mini2440=0tb
MINI2440: 't' ignored, touchscreen not compiled in
MINI2440: LCD [0:240x320] 1:800x480 2:1024x768
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C244X: Clock Support, DVS off
bio: create slab <bio-0> at 0
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
s3c-i2c s3c2440-i2c: slave address 0x10
s3c-i2c s3c2440-i2c: bus frequency set to 98 KHz
s3c-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
Advanced Linux Sound Architecture Driver Version 1.0.24.
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
UDP hash table entries: 256 (order: 0, 4096 bytes)
UDP-Lite hash table entries: 256 (order: 0, 4096 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.
nfs4filelayout_init: NFSv4 File Layout Driver Registering...
Installing knfsd (copyright (C) 1996
okir@monad.swb.de).
ROMFS MTD (C) 2007 Red Hat, Inc.
msgmni has been set to 117
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
Console: switching to colour frame buffer device 60x53
fb0: s3c2410fb frame buffer device
s3c2440-uart.0: ttySAC0 at MMIO 0x50000000 (irq = 70) is a S3C2440
console [ttySAC0] enabled
s3c2440-uart.1: ttySAC1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: ttySAC2 at MMIO 0x50008000 (irq = 76) is a S3C2440
brd: module loaded
at24 0-0050: 1024 byte 24c08 EEPROM, writable, 16 bytes/write
dm9000 Ethernet Driver, V1.31
eth0: dm9000e at c4812300,c4814304 IRQ 51 MAC: 00:1a:4d:26:ba:5c (chip)
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
s3c2410-ohci s3c2410-ohci: S3C24XX OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
usbcore: registered new interface driver libusual
mousedev: PS/2 mouse device common for all mice
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c-rtc s3c2410-rtc: rtc disabled, re-enabling
s3c-rtc s3c2410-rtc: rtc core: registered s3c as rtc0
i2c /dev entries driver
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
s3c2410-wdt s3c2410-wdt: watchdog inactive, reset disabled, irq disabled
cpuidle: using governor ladder
sdhci: Secure Digital Host Controller Interface driver
sdhci: Copyright(c) Pierre Ossman
s3c-sdi s3c2440-sdi: powered down.
s3c-sdi s3c2440-sdi: mmc0 - using pio, sw SDIO IRQ
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
ALSA device list:
No soundcards found.
TCP cubic registered
NET: Registered protocol family 17
Registering the dns_resolver key type
input: gpio-keys as /devices/platform/gpio-keys/input/input0
s3c-rtc s3c2410-rtc: setting system clock to 2000-01-02 06:29:12 UTC (946794552)
dm9000 dm9000: eth0: link down
IP-Config: Complete:
device=eth0, addr=192.168.2.34, mask=255.255.0.0, gw=192.168.1.100,
host=arm9, domain=, nis-domain=(none),
bootserver=192.168.2.26, rootserver=192.168.2.26, rootpath=
dm9000 dm9000: eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
在这等待了起码有5分钟。
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs" 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)
[<c000d980>] (unwind_backtrace+0x0/0xf4) from [<c0312aa8>] (panic+0x58/0x19c)
[<c0312aa8>] (panic+0x58/0x19c) from [<c040cc40>] (mount_block_root+0x16c/0x220)
[<c040cc40>] (mount_block_root+0x16c/0x220) from [<c040cdc8>] (mount_root+0xd4/0
xf8)
[<c040cdc8>] (mount_root+0xd4/0xf8) from [<c040cf40>] (prepare_namespace+0x154/0
x1ac)
[<c040cf40>] (prepare_namespace+0x154/0x1ac) from [<c040c280>] (kernel_init+0xe0
/0x114)
[<c040c280>] (kernel_init+0xe0/0x114) from [<c0009abc>] (kernel_thread_exit+0x0/
0x8)
本人是新手，在网上实在是找不到解决这个问题的方法了，希望大家帮下忙。谢谢
虚拟机的可以自己挂载rootfs下的目录，防火墙也关了。
