Hi to everybody!
I am starting to use custom OMAP-L138 board. I also have an OMAP-L138_LCDK Kit. I tried to use NFS within the Kit, and succeeded with this. Kit downoads kernel mcsdk image through tftp server, boots kernel and then mounts filesystem using NFS server.
When I use similar bootargs to boot my custom board, I get a such result:
Detected M25P128 with page size 256 KiB, total 16 MiB
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: davinci_eth_phy_detect: too many PHYs detected
88E6165 Initialized on 88E6165
DaVinci-EMAC
Hit any key to stop autoboot: 0
U-Boot > printenv
baudrate=115200
bootargs=console=ttyS1,115200n8 root=/dev/nfs nfsroot=192.168.1.11:/home/buba/fi
lesystem/omap,nolock ip=192.168.1.1 mem=32M@0xc0000000 mem=64M@0xc4000000
bootcmd=tftp; bootm
bootdelay=3
bootfile=uImage
ethact=DaVinci-EMAC
ethaddr=00:00:00:00:0c:00
ipaddr=192.168.1.1
serverip=192.168.1.10
stderr=serial
stdin=serial
stdout=serial
ver=U-Boot 2012.04.01 (May 16 2016 - 14:35:38)
Environment size: 420/65532 bytes
U-Boot > boot
Using DaVinci-EMAC device
TFTP from server 192.168.1.10; our IP address is 192.168.1.1
Filename 'uImage'.
Load address: 0xc0700000
Loading: #################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
###############
done
Bytes transferred = 2402728 (24a9a8 hex)
## Booting kernel from Legacy Image at c0700000 ...
Image Name: Linux-3.3.0
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 2402664 Bytes = 2.3 MiB
Load Address: c0008000
Entry Point: c0008000
Verifying Checksum ... OK
Loading Kernel Image ... OK
OK
Starting kernel ...
Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0
Linux version 3.3.0 (buba@buba-VirtualBox) (gcc version 4.5.3 20110311 (prerelea
se) (GCC) ) #7 PREEMPT Tue May 17 17:06:07 UZT 2016
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
CPU: VIVT data cache, VIVT instruction cache
Machine: OMAP-L138 Voip board
Memory policy: ECC disabled, Data cache writeback
BUG: mapping for 0x80000000 at 0xfffe0000 out of vmalloc space
DaVinci da850/omap-l138/am18x variant 0x1
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 24320
Kernel command line: console=ttyS1,115200n8 root=/dev/nfs nfsroot=192.168.1.11:/
home/buba/filesystem/omap,nolock ip=192.168.1.1 mem=32M@0xc0000000 mem=64M@0xc40
00000
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: 32MB 64MB = 96MB total
Memory: 92340k/92340k available, 5964k reserved, 0K highmem
Virtual kernel memory layout:
vector : 0xffff0000 - 0xffff1000 ( 4 kB)
fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
vmalloc : 0xc8800000 - 0xff000000 ( 872 MB)
lowmem : 0xc0000000 - 0xc8000000 ( 128 MB)
modules : 0xbf000000 - 0xc0000000 ( 16 MB)
.text : 0xc0008000 - 0xc0474000 (4528 kB)
.init : 0xc0474000 - 0xc049f000 ( 172 kB)
.data : 0xc04a0000 - 0xc04d15a0 ( 198 kB)
.bss : 0xc04d15c4 - 0xc04ee8cc ( 117 kB)
SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:245
Console: colour dummy device 80x30
Calibrating delay loop... 148.88 BogoMIPS (lpj=744448)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
Setting up static identity map for 0xc0362e10 - 0xc0362e68
gpiochip_add: registered GPIOs 0 to 31 on device: DaVinci
gpiochip_add: registered GPIOs 32 to 63 on device: DaVinci
gpiochip_add: registered GPIOs 64 to 95 on device: DaVinci
gpiochip_add: registered GPIOs 96 to 127 on device: DaVinci
gpiochip_add: registered GPIOs 128 to 143 on device: DaVinci
DaVinci: 144 gpio irqs
print_constraints: dummy:
NET: Registered protocol family 16
EMAC: MII PHY configured
No entry for the specified index
No entry for the specified index
bio: create slab <bio-0> at 0
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Advanced Linux Sound Architecture Driver Version 1.0.24.
Switching to clocksource timer0_1
musb-hdrc: version 6.0, ?dma?, otg (peripheral+host)
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 named UNIX socket transport module.
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
RPC: Registered tcp NFSv4.1 backchannel transport module.
JFFS2 version 2.2. (NAND) © 2001-2006 Red Hat, Inc.
msgmni has been set to 180
io scheduler noop registered (default)
Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled
serial8250.0: ttyS0 at MMIO 0x1c42000 (irq = 25) is a AR7
serial8250.0: ttyS1 at MMIO 0x1d0c000 (irq = 53) is a AR7
console [ttyS1] enabled
serial8250.0: ttyS2 at MMIO 0x1d0d000 (irq = 61) is a AR7
brd: module loaded
davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
davinci_mdio davinci_mdio.0: detected phy mask e7c0cfb0
davinci_mdio.0: probed
davinci_mdio davinci_mdio.0: phy[0]: device davinci_mdio-0:00, driver unknown
davinci_mdio davinci_mdio.0: phy[1]: device davinci_mdio-0:01, driver unknown
davinci_mdio davinci_mdio.0: phy[2]: device davinci_mdio-0:02, driver unknown
davinci_mdio davinci_mdio.0: phy[3]: device davinci_mdio-0:03, driver unknown
davinci_mdio davinci_mdio.0: phy[6]: device davinci_mdio-0:06, driver unknown
davinci_mdio davinci_mdio.0: phy[12]: device davinci_mdio-0:0c, driver unknown
davinci_mdio davinci_mdio.0: phy[13]: device davinci_mdio-0:0d, driver unknown
davinci_mdio davinci_mdio.0: phy[16]: device davinci_mdio-0:10, driver unknown
davinci_mdio davinci_mdio.0: phy[17]: device davinci_mdio-0:11, driver unknown
davinci_mdio davinci_mdio.0: phy[18]: device davinci_mdio-0:12, driver unknown
davinci_mdio davinci_mdio.0: phy[19]: device davinci_mdio-0:13, driver unknown
davinci_mdio davinci_mdio.0: phy[20]: device davinci_mdio-0:14, driver unknown
davinci_mdio davinci_mdio.0: phy[21]: device davinci_mdio-0:15, driver unknown
davinci_mdio davinci_mdio.0: phy[27]: device davinci_mdio-0:1b, driver unknown
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
input: gpio-keys-polled as /devices/platform/gpio-keys-polled.0/input/input0
omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
omap_rtc: RTC power up reset detected
omap_rtc: already running
i2c /dev entries driver
watchdog watchdog: heartbeat 60 sec
cpuidle: using governor ladder
cpuidle: using governor menu
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
usbcore: registered new interface driver snd-usb-audio
soc-audio soc-audio.0: ASoC: Failed to create card debugfs directory
ALSA device list:
No soundcards found.
TCP cubic registered
NET: Registered protocol family 17
console [netcon0] enabled
netconsole: network logging started
davinci_emac davinci_emac.1: using random MAC addr: 6a:9a:48:a6:a6:60
omap_rtc omap_rtc: setting system clock to 2000-01-01 08:07:18 UTC (946714038)
davinci_mdio davinci_mdio.0: resetting idled controller
net eth0: attached PHY driver [Generic PHY] (mii_bus:phy_addr=davinci_mdio-0:02,
id=1410cb1)
PHY: davinci_mdio-0:02 - Link is Up - 1000/Full
IP-Config: Guessing netmask 255.255.255.0
IP-Config: Complete:
device=eth0, addr=192.168.1.1, mask=255.255.255.0, gw=255.255.255.255,
host=192.168.1.1, domain=, nis-domain=(none),
bootserver=255.255.255.255, rootserver=192.168.1.11, 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:
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)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)
I don't know what do I need to change to mount filesystem using NFS.
I'm using mcsdk_1_01_00_02.
TFTP server and NFS server have different addresses (192.168.1.10 and 192.168.1.11).
Custom board has the same kernel .config as a kit.
I don't want to use dhcp during linux boot, only static ip address.
I noticed that there is no any packets from the custom board when NFS working.
I tried many bootargs variants but with no luck (example: setenv bootargs 'console=ttyS1,115200n8 noinitrd rw ip=192.168.1.1 root=/dev/nfs nfsroot=192.168.1.11:/home/buba/filesystem/omap,nolock mem=32M@0xc0000000 mem=64M@0xc4000000 rootdelay=5').
I also read these links
http://processors.wiki.ti.com/index.php/MCSDK_OMAPL138_User_Guide_Chapter_Exploring
http://processors.wiki.ti.com/index.php/GSG:_Setting_up_OMAP-L1/AM1x_Target_File_System
and went through the e2e forum, but didn't find solution.
Please help me! I will be very much appreciated for your early reply.