unable to configure eth0 onDM6646

This is likely a problem with the kernel not having proper support for ethernet.  Once the kernel boots, it re-initializes hardware resources so u-boot capabilities no longer apply.

The fact that your network capabilities seem to work in u-boot (I am guessing TFTP and other capabilities) is a great sign that your hardware is likely good.  Now you need to make sure that your Linux kernel software has proper support built-in.  Where did you get the Linux kernel?  Are you using our DM6446 EVM from Spectrum Digital or did you build your own EVM with perhaps a different EMAC PHY?  By default, the Linux kernel we provide with our DVSDK is designed for our EVM and has ethernet enabled by default.

The source that i am using is open source from git i have selected davinci_all_defconfig and after that i opened Device Drivers--->Network device support--->Ethernet(10 or 100Mbit)

 --- Ethernet (10 or 100Mbit)                                                        
                -*-   Generic Media Independent Interface device support                             
                < >   ASIX AX88796 NE2000 clone support                                           
                <*>   SMC 91C9x/91C1xxx support                                                       
                <*>   TI DaVinci EMAC Support                                                        
                <*>   DM9000 support                                                                  
                (4)     DM9000 maximum debug level                                                   
                 [ ]     Force simple NSR based PHY polling                                           
                < >   OpenCores 10/100 Mbps Ethernet MAC support                                     

                < >   SMSC LAN911[5678] support      

               <*>   SMSC LAN911x/LAN921x families embedded ethernet support                  
                < >   Dave ethernet support (DNET)                                                  
                < >   Broadcom 440x/47xx ethernet support             

                < >   Micrel KSZ8842                                                     

here i selected SMSC LAN 911x/LAN921x families embedded ethernet support.

but i still get the same error can you please tell what problem it can be is it still not able to load the ethernet driver.by the way my LAN is SMSC LAN 8700

Hi,

Have  you selected PHY driver in the network driver configuration?
--- Network device support
 -*-   PHY Device support and infrastructure  --->
  <*>   Drivers for SMSC PHYs

Regards,
Chaithrika

yes i  have enabled the driver for SMSC PHY's

have you noted the second message it says Devices or resource busy.

## Booting kernel from Legacy Image at 80000000 ...                              
   Image Name:   Linux-2.6.31-rc5-davinci1                                       
   Image Type:   ARM Linux Kernel Image (uncompressed)                           
   Data Size:    1485668 Bytes =  1.4 MB                                         
   Load Address: 80008000                                                        
   Entry Point:  80008000                                                        
   Verifying Checksum ... OK                                                     
   Loading Kernel Image ... OK                                                   
OK                                                                               
                                                                                 
Starting kernel ...                                                              
                                                                                 
Uncompressing Linux...............................................................
Linux version 2.6.31-rc5-davinci1 (root@localhost.localdomain) (gcc version 4.2.29
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177                    
CPU: VIVT data cache, VIVT instruction cache                                     
Machine: DaVinci DM644x EVM                                                      
Memory policy: ECC disabled, Data cache writeback                                
DaVinci dm6446a variant 0x1                                                      
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 30480       
Kernel command line: console=ttyS0,115200n8 root=/dev/ram0 rw initrd=0x81600000,1M
PID hash table entries: 512 (order: 9, 2048 bytes)                               
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)                   
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)                     
Memory: 120MB = 120MB total                                                      
Memory: 108244KB available (2732K code, 295K data, 124K init, 0K highmem)        
SLUB: Genslabs=11, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1          
NR_IRQS:229                                                                      
Console: colour dummy device 80x30                                               
Calibrating delay loop... 147.86 BogoMIPS (lpj=739328)                           
Mount-cache hash table entries: 512                                              
CPU: Testing write buffer coherency: ok                                          
DaVinci: 71 gpio irqs                                                            
NET: Registered protocol family 16                                               
WARNING: both IDE and Flash are enabled, but they share AEMIF pins.              
        Disable IDE for NAND/NOR support.                                        
MUX: Setting register HPIEN_DISABLE                                              
           PINMUX0 (0x00000000) = 0x80000c1f -> 0x80000c1f                       
MUX: initialized ATAEN                                                           
MUX: Setting register ATAEN                                                      
           PINMUX0 (0x00000000) = 0x80000c1f -> 0x80020c1f                       
MUX: initialized HDIREN                                                          
MUX: Setting register HDIREN                                                     
           PINMUX0 (0x00000000) = 0x80020c1f -> 0x80030c1f                       
MUX: initialized MCBSP                                                           
MUX: Setting register MCBSP                                                      
           PINMUX1 (0x00000004) = 0x00000081 -> 0x00000481                       
bio: create slab <bio-0> at 0                                                    
pcf857x: probe of 1-0038 failed with error -121                                  
pcf857x: probe of 1-0039 failed with error -121                                  
pcf857x: probe of 1-003a failed with error -121                                  
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                                                              
NET: Registered protocol family 1                                                
Trying to unpack rootfs image as initramfs...                                    
rootfs image is not initramfs (junk in compressed archive); looks like an initrd 
Freeing initrd memory: 10240K                                                    
msgmni has been set to 231                                                       
io scheduler noop registered                                                     
io scheduler anticipatory registered (default)                                   
Setting Up Clocks for DM420 OSD                                                  
Console: switching to colour frame buffer device 90x30                           
fb0: dm_osd0_fb frame buffer device                                              
fb1: dm_vid0_fb frame buffer device                                              
fb2: dm_osd1_fb frame buffer device                                              
fb3: dm_vid1_fb frame buffer device                                              
Serial: 8250/16550 driver, 3 ports, IRQ sharing disabled                         
Platform driver 'serial8250' needs updating - please use dev_pm_ops              
serial8250.0: ttyS0 at MMIO 0x1c20000 (irq = 40) is a 16550A                     
console [ttyS0] enabled                                                          
serial8250 serial8250.0: unable to register port at index 1 (IO0 MEM1c20400 IRQ412
serial8250 serial8250.0: unable to register port at index 2 (IO0 MEM1c20800 IRQ422
brd: module loaded                                                               
at24 1-0050: 32768 byte 24c256 EEPROM (writable)                                 
davinci_emac_probe: using random MAC addr: 3a:d1:79:bc:b0:a3                     
emac-mii: probed                                                                 
Platform driver 'smc911x' needs updating - please use dev_pm_ops                 
console [netcon0] enabled                                                        
netconsole: network logging started                                              
i2c /dev entries driver                                                          
TCP cubic registered                                                             
NET: Registered protocol family 17                                               
RPC: Registered udp transport module.                                            
RPC: Registered tcp transport module.                                            
Clocks: disable unused uart1                                                     
Clocks: disable unused uart2                                                     
Clocks: disable unused ide                                                       
Clocks: disable unused asp0                                                      
Clocks: disable unused mmcsd                                                     
Clocks: disable unused spi                                                       
Clocks: disable unused usb                                                       
Clocks: disable unused vlynq                                                     
Clocks: disable unused pwm0                                                      
Clocks: disable unused pwm1                                                      
Clocks: disable unused pwm2                                                      
Clocks: disable unused timer1                                                    
RAMDISK: ext2 filesystem found at block 0                                        
RAMDISK: Loading 7000KiB [1 disk] into ram disk... done.                         
VFS: Mounted root (ext2 filesystem) on device 1:0.                               
Freeing init memory: 124K                                                        
                                                                                 
    System initialization...                                                     
                                                                                 
    Hostname       : OMAP3EVM                                                    
    Filesystem     : v1.0.0                                                      
                                                                                 
                                                                                 
    Kernel release : Linux 2.6.31-rc5-davinci1                                   
    Kernel version : #2 PREEMPT Wed Oct 7 14:30:51 PKT 2009                      
                                                                                 
 Mounting /proc             : [SUCCESS]                                          
 Mounting /sys              : [SUCCESS]                                          
 Mounting /dev              : [SUCCESS]                                          
 Mounting /dev/pts          : [SUCCESS]                                          
 Enabling hot-plug          : [SUCCESS]                                          
 Populating /dev            : [SUCCESS]                                          
 Mounting other filesystems : [SUCCESS]                                          
 Starting syslogd           : [SUCCESS]                                          
 Starting telnetd           : [SUCCESS]                                          
                                                                                 
System initialization complete.                                                  
                                                                                 
Please press Enter to activate this console. if^H                                
# ifconfig eth0                                                                  
eth0      Link encap:Ethernet  HWaddr 00:00:00:00:00:00                          
          BROADCAST MULTICAST  MTU:1500  Metric:1                                
          RX packets:0 errors:0 dropped:0 overruns:4294967295 frame:4294967291   
          TX packets:0 errors:0 dropped:0 overruns:4294967295 carrier:4294967295 
          collisions:4294967293 txqueuelen:1000                                  
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)                                 
          Interrupt:13                                                           
                                                                                 
# ifconfig eth0 up                                                               
eth0: no PHY found                                                               
ifconfig: SIOCSIFFLAGS: Operation not permitted                                  
# ifconfig eth0 upnet eth0: DaVinci EMAC: request_irq() failed                   
ifconfig: SIOCSIFFLAGS: Device or resource busy                                  
# ifconfig eth0 up                                                               
kernel BUG at include/linux/netdevice.h:439!                                     
                                                                                 
Unable to handle kernel NULL pointer dereference at virtual address 00000000     
pgd = c74d8000                                                                   
[00000000] *pgd=866da031, *pte=00000000, *ppte=00000000                          
Internal error: Oops: 817 [#1] PREEMPT                                           
Modules linked in:                                                               
CPU: 0    Not tainted  (2.6.31-rc5-davinci1 #2)                                  
PC is at __bug+0x20/0x2c                                                         
LR is at preempt_schedule+0x48/0x64                                              
pc : [<c002b3b0>]    lr : [<c02338a4>]    psr: 60000013                          
sp : c707bdc0  ip : c707bd00  fp : c707bdcc                                      
r10: c704a800  r9 : c704a800  r8 : c704aac0                                      
r7 : 00000001  r6 : 00000001  r5 : 00000000  r4 : c17e3780                       
r3 : 00000000  r2 : c707a000  r1 : c70d8000  r0 : 00000033                       
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment user                
Control: 0005317f  Table: 874d8000  DAC: 00000015                                
Process ifconfig (pid: 813, stack limit = 0xc707a270)                            
Stack: (0xc707bdc0 to 0xc707c000)                                                
bdc0: c707be1c c707bdd0 c0191bac c002b3a0 c704a800 c704a800 c005695c c00568ac    
bde0: 00000000 00000000 c704aa08 c704aa08 c0056984 c704a800 c704a830 c0247b24    
be00: 00001002 bea59950 c704a800 c70d130c c707be3c c707be20 c01b86b8 c01917cc    
be20: c01b3ec4 c704a800 00000041 00001043 c707be5c c707be40 c01b68b8 c01b8604    
be40: 00000001 00000000 c707be78 c70d1300 c707bec4 c707be60 c01fb248 c01b6830    
be60: 00008914 00000000 30687465 00000000 00000000 00000000 001b1043 001b46a4    
be80: 001b4708 001b4740 001b1043 001b46a4 001b4708 001b4740 001b4708 c17e3180    
bea0: 00008914 bea59950 c17e3180 00000003 c707a000 0019273c c707bed4 c707bec8    
bec0: c01fbce8 c01faf94 c707bef4 c707bed8 c01a7d30 c01fbc38 c17e3180 c17e3180    
bee0: bea59950 00008914 c707bf14 c707bef8 c00a1eb4 c01a7b58 c707bf1c c17e3180    
bf00: c6d9e028 bea59950 c707bf7c c707bf18 c00a2558 c00a1e8c c01a634c c0095a68    
bf20: c0248328 c0034c18 c6d9e000 00000000 c707bf5c c707bf40 c0092808 c0034c18    
bf40: 00000000 00000003 c6d9e000 00000119 c707bf84 c707bf60 c01a63e8 00000003    
bf60: bea59950 00008914 c0027fe4 c707a000 c707bfa4 c707bf80 c00a25f8 c00a2018    
bf80: c01a6d2c 00000000 00192574 00000004 00000000 00000036 00000000 c707bfa8    
bfa0: c0027e60 c00a25c8 00192574 00000004 00000003 00008914 bea59950 00192574    
bfc0: 00192574 00000004 00000000 00000036 00000000 0000005c 0019273c bea59950    
bfe0: bea59ebc bea59928 0000b75c 0000903c 20000010 00000003 00000053 00000020    
Backtrace:                                                                       
[<c002b390>] (__bug+0x0/0x2c) from [<c0191bac>] (emac_dev_open+0x3f0/0xc50)      
[<c01917bc>] (emac_dev_open+0x0/0xc50) from [<c01b86b8>] (dev_open+0xc4/0x128)   
[<c01b85f4>] (dev_open+0x0/0x128) from [<c01b68b8>] (dev_change_flags+0x98/0x170)
 r6:00001043 r5:00000041 r4:c704a800                                             
[<c01b6820>] (dev_change_flags+0x0/0x170) from [<c01fb248>] (devinet_ioctl+0x2c4/)
 r7:c70d1300 r6:c707be78 r5:00000000 r4:00000001                                 
[<c01faf84>] (devinet_ioctl+0x0/0x6b0) from [<c01fbce8>] (inet_ioctl+0xc0/0xf0)  
[<c01fbc28>] (inet_ioctl+0x0/0xf0) from [<c01a7d30>] (sock_ioctl+0x1e8/0x248)    
[<c01a7b48>] (sock_ioctl+0x0/0x248) from [<c00a1eb4>] (vfs_ioctl+0x38/0x98)      
 r6:00008914 r5:bea59950 r4:c17e3180                                             
[<c00a1e7c>] (vfs_ioctl+0x0/0x98) from [<c00a2558>] (do_vfs_ioctl+0x550/0x5b0)   
 r6:bea59950 r5:c6d9e028 r4:c17e3180                                             
[<c00a2008>] (do_vfs_ioctl+0x0/0x5b0) from [<c00a25f8>] (sys_ioctl+0x40/0x64)    
 r9:c707a000 r8:c0027fe4 r6:00008914 r5:bea59950 r4:00000003                     
[<c00a25b8>] (sys_ioctl+0x0/0x64) from [<c0027e60>] (ret_fast_syscall+0x0/0x2c)  
 r7:00000036 r6:00000000 r5:00000004 r4:00192574                                 
Code: e1a01000 e59f000c eb004704 e3a03000 (e5833000)                             
---[ end trace ca5f422e054d7d28 ]---                                             
Segmentation fault 

#

still get the same error.Can anyone tell what the hell is going on i am able to use my ethernet phy in u-boot. if i disable the 'TI support for Davinci EMAC' then at

ifconfig eth0

i get no such device

regard's

Rohan

Have you noticed another thing my eth0 devices driver does not gets up in the kernel boot messages

Regard's

Rohan Tabish

this is definitely not good.  Perhaps your kernel configuration is not properly enabling ethernet driver or the driver does not support the ethernet hardware present very well.