首先，通过UBOOT执行PING命令，但是有个奇怪的现象，就是PING成功的时候间隔的，也就是第一次PING，显示如下：
phy info reg 0x1e addr 0 var ffff
phy info reg 0x1e addr 0 var ffff
failed to read bmcr
ping failed.
但是第二次ping 就成功了，显示如下：
phy info reg 0x1e addr 0 var 2
phy info reg 0x1e addr 0 var a
link up on port 0,speed 100 ,full duplex
host 192.168.253.155 is alive。
第三次又和第一次一样，第4次和第二次一样，以此类推。
内核启动信息，导致挂接NFS失败，信息如下：
U-Boot 2010.06 (Aug 22 2016 - 23:48:10) DM385_IPNC_3.80.00
DM385-GP rev 1.1
ARM clk: 600MHz
DDR clk: 400MHz
L3 clk: 200MHz
IVA clk: 450MHz
ISS clk: 400MHz
DSP Default OFF
DSS Default OFF
I2C: ready
DRAM: 1 GiB
DCACHE: On
NAND: HW ECC BCH8 Selected
256 MiB
MMC: OMAP SD/MMC: 0, ON-BOARD SDIO: 1
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@@ @@@@@ L@@ @@@ @@@@@@ @@@@@i @@@@@@ @@
@@ @@ @@@. @@@ @@@ @@ @, @@ :@@ @@
@@ @@ @@ @@@ @@@ @@@@ @@;@@: C@@@@@. @@
@@ @@ @@ @@@.l@L@ G@@@ ,@@@@ @@@ @@ @@
@@ @@ @@ l@ @@@@ @. l@@ @@ L@@ @ G@ @@
@@ @@ @@ @@ @@@@ @@ @@ C@ @@ @@ @@
@@ @@ ,@C @@ @@@ @@ @i @@ C@ @@ @@ @@ @@
@@ @@@@@@@ @@ @@ @@ @@@@@l @@@@@@ L@@@@@ @@
@@ @@@@@ @ @ @ L@@ @@@, ,@@G @@
@@ @@
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Net: Ethernet clocking: 0x52
Detected MACID:0:c:c:a0:ff:fa
cpsw
Hit any key to stop autoboot: 0
Loading from nand0, offset 0x280000
Image Name: Linux-2.6.37_DM388_IPNC_3.80.00
Created: 2014-03-19 10:49:20 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2480740 Bytes = 2.4 MiB
Load Address: 80008000
Entry Point: 80008000
## Booting kernel from Legacy Image at 81000000 ...
Image Name: Linux-2.6.37_DM388_IPNC_3.80.00
Created: 2014-03-19 10:49:20 UTC
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2480740 Bytes = 2.4 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 2.6.37_DM388_IPNC_3.80.00 (root@localhost.localdomain) (gcc versio
n 4.5.3 20110311 (prerelease) (GCC) ) #1 Wed Mar 19 18:49:10 CST 2014
CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f
CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache
Machine: dm385ipnc
bootconsole [earlycon0] enabled
ti81xx_reserve: ### Reserved DDR region @84f00000
reserved size = 4194304 at 0x0
FB: Reserving 4194304 bytes SDRAM for VRAM
Memory policy: ECC disabled, Data cache writeback
OMAP chip is DM385 1.0
SRAM: Mapped pa 0x402f1000 to va 0xfe400000 size: 0xf000
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 19040
Kernel command line: root=/dev/nfs console=ttyO0,115200n8 mem=80M rw notifyk.vps
sm3_sva=0xBFD00000 nfsroot=192.168.253.131:/opt/Source/ipnc_rdk/target/filesys,n
olock eth=00:0C:0C:A0:FF:FA ip=192.168.253.144 cmemk.phys_start=0x85000000 cmemk
.phys_end=0x89000000 cmemk.allowOverlap=1 earlyprintk
cpsw: kernel boot params Ethernet address: 00:0C:0C:A0:FF:FA
PID hash table entries: 512 (order: -1, 2048 bytes)
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 74MB 1MB = 75MB total
Memory: 70684k/70684k available, 11236k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
DMA : 0xffc00000 - 0xffe00000 ( 2 MB)
vmalloc : 0xc5800000 - 0xf8000000 ( 808 MB)
lowmem : 0xc0000000 - 0xc5000000 ( 80 MB)
pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
.init : 0xc0008000 - 0xc003e000 ( 216 kB)
.text : 0xc003e000 - 0xc04b9000 (4588 kB)
.data : 0xc04ba000 - 0xc04fa980 ( 259 kB)
SLUB: Genslabs=11, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:375
IRQ: Found an INTC at 0xfa200000 (revision 5.0) with 128 interrupts
Total of 128 interrupts on 1 active controller
GPMC revision 6.0
Trying to install interrupt handler for IRQ368
Trying to install interrupt handler for IRQ369
Trying to install interrupt handler for IRQ370
Trying to install interrupt handler for IRQ371
Trying to install interrupt handler for IRQ372
Trying to install interrupt handler for IRQ373
Trying to install interrupt handler for IRQ374
Trying to install type control for IRQ375
Trying to set irq flags for IRQ375
OMAP clockevent source: GPTIMER1 at 20000000 Hz
Console: colour dummy device 80x30
Calibrating delay loop... 599.65 BogoMIPS (lpj=2998272)
pid_max: default: 32768 minimum: 301
Security Framework initialized
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
devtmpfs: initialized
TI81XX: Map 0x84f00000 to 0xfe500000 for dram barrier
TI81XX: Map 0x40300000 to 0xfe600000 for sram barrier
omap_voltage_early_init: voltage driver support not added
regulator: core version 0.5
regulator: dummy:
NET: Registered protocol family 16
omap_voltage_domain_lookup: Voltage driver init not yet happened.Faulting!
omap_voltage_add_dev: VDD specified does not exist!
OMAP GPIO hardware version 0.1
OMAP GPIO hardware version 0.1
OMAP GPIO hardware version 0.1
OMAP GPIO hardware version 0.1
omap_mux_init: Add partition: #1: core, flags: 4
Cannot clk_get ck_32
Debugfs: Only enabling/disabling deep sleep and wakeup timer is supported now
registered ti81xx_vpss device
registered ti81xx_vidout device
registered ti81xx on-chip HDMI device
registered ti81xx_fb device
PWM0 init success.
PWM1 init success.
bio: create slab <bio-0> at 0
SCSI subsystem initialized
USBSS revision 4ea2080b
registerd cppi-dma Intr @ IRQ 17
Cppi41 Init Done
omap_i2c omap_i2c.1: bus 1 rev4.0 at 100 kHz
tps65910 1-002d: No interrupt support, no core IRQ
Advanced Linux Sound Architecture Driver Version 1.0.23.
Switching to clocksource gp timer
musb-hdrc: version 6.0, peripheral, debug=0
musb-hdrc musb-hdrc.0: dma type: dma-cppi41
MUSB controller-0 revision 4ea20800
usb2phy: computed values rxcalib(15)DACs(29 13 13)
usb2phy: override computed values rxcalib(15)DACs(29 13 13)
usb2phy_config: musb(0) rxcalib done, rxcalib read value 6f6edb6e
musb-hdrc musb-hdrc.0: USB Peripheral mode controller at c581e000 using DMA, IRQ
18
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
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 udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
NetWinder Floating Point Emulator V0.97 (double precision)
PMU: registered new PMU device of type 0
omap-iommu omap-iommu.0: ducati registered
omap-iommu omap-iommu.1: sys registered
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 138
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
CMEMK module: built on Mar 19 2014 at 18:34:25
Reference Linux version 2.6.37
File /opt/workdir/DM8127_DM385_Ver3_8/Source/ti_tools/linuxutils_3_23_00_01/pa
ckages/ti/sdo/linuxutils/cmem/src/module/cmemk.c
allocated heap buffer 0xc7000000 of size 0x4000000
cmemk initialized
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
omap_uart.0: ttyO0 at MMIO 0x48020000 (irq = 72) is a OMAP UART0
console [ttyO0] enabled, bootconsole disabled
console [ttyO0] enabled, bootconsole disabled
omap_uart.1: ttyO1 at MMIO 0x48022000 (irq = 73) is a OMAP UART1
omap_uart.2: ttyO2 at MMIO 0x48024000 (irq = 74) is a OMAP UART2
brd: module loaded
loop: module loaded
omap2-nand driver initializing
ONFI param page 0 valid
ONFI flash detected
NAND device: Manufacturer ID: 0x2c, Chip ID: 0xca (Micron NAND 256MiB 3,3V 16-bi
t)
omap2-nand: detected x16 NAND flash
Creating 8 MTD partitions on "omap2-nand.0":
0x000000000000-0x000000020000 : "U-Boot-min"
0x000000020000-0x000000260000 : "U-Boot"
0x000000260000-0x000000280000 : "U-Boot Env"
0x000000280000-0x0000006c0000 : "Kernel"
0x0000006c0000-0x000006fc0000 : "File System"
0x000006fc0000-0x000007bc0000 : "Data"
0x000007bc0000-0x00000b0c0000 : "File System2"
0x00000b0c0000-0x000010000000 : "Reserved"
davinci_mdio davinci_mdio.0: davinci mdio revision 1.6
davinci_mdio davinci_mdio.0: detected phy mask fffffffe
davinci_mdio.0: probed
davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver unknown
mice: PS/2 mouse device common for all mice
omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
i2c /dev entries driver
Linux video capture interface: v2.00
OMAP Watchdog Timer Rev 0x00: initial timeout 60 sec
notify_shm_drv: no DSP present (MULTIPROC_INVALIDID)
notify_init : notify drivercreated for remote proc id 1 at physical Address 0x
bfd00000
cm: Module associated with clock hdmi_i2s_fck didn't enable in 100000 tries
asoc: tlv320aic3x-hifi <-> davinci-mcasp.1 mapping ok
asoc: HDMI-DAI-CODEC <-> hdmi-dai mapping ok
ALSA device list:
#0: TI81XX EVM
nf_conntrack version 0.5.0 (1104 buckets, 4416 max)
ip_tables: (C) 2000-2006 Netfilter Core Team
TCP cubic registered
NET: Registered protocol family 17
Bridge firewalling registered
lib80211: common routines for IEEE802.11 drivers
Registering the dns_resolver key type
VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3
omap_voltage_late_init: Voltage driver support not added
Power Management for TI81XX.
Detected MACID=0:c:c:a0:ff:fa
omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
CPSW phy found : id is : 0x4dd074
PHY 0:01 not found
IP-Config: Guessing netmask 255.255.255.0
IP-Config: Complete:
device=eth0, addr=192.168.253.144, mask=255.255.255.0, gw=255.255.255.255,
host=192.168.253.144, domain=, nis-domain=(none),
bootserver=255.255.255.255, rootserver=192.168.253.131, rootpath=
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:
1f00 128 mtdblock0 (driver?)
1f01 2304 mtdblock1 (driver?)
1f02 128 mtdblock2 (driver?)
1f03 4352 mtdblock3 (driver?)
1f04 107520 mtdblock4 (driver?)
1f05 12288 mtdblock5 (driver?)
1f06 54272 mtdblock6 (driver?)
1f07 81152 mtdblock7 (driver?)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
Backtrace:
[<c004bf70>] (dump_backtrace+0x0/0x110) from [<c038a3d0>] (dump_stack+0x18/0x1c)
r6:00008000 r5:c4768000 r4:c04fb518 r3:60000013
[<c038a3b8>] (dump_stack+0x0/0x1c) from [<c038a430>] (panic+0x5c/0x178)
[<c038a3d4>] (panic+0x0/0x178) from [<c0009184>] (mount_block_root+0x1c4/0x204)
r3:00000000 r2:00000000 r1:c4425f58 r0:c0442365
r7:c04423c9
[<c0008fc0>] (mount_block_root+0x0/0x204) from [<c0009358>] (mount_root+0xac/0xc
c)
[<c00092ac>] (mount_root+0x0/0xcc) from [<c00094e4>] (prepare_namespace+0x16c/0x
1cc)
r4:c04fa9e4
[<c0009378>] (prepare_namespace+0x0/0x1cc) from [<c0008d70>] (kernel_init+0x114/
0x154)
r5:c002d42c r4:c002d42c
[<c0008c5c>] (kernel_init+0x0/0x154) from [<c0073458>] (do_exit+0x0/0x5d0)
r5:c0008c5c r4:00000000
