I am trying to compile the Linux kernel (3.0.8, buildroot-gcc-12.3.0, ARMv7) to run on my IP camera. eth0 is not able to get up. At first, kernel boot just crashed at Starting network step:
Unable to handle kernel paging request at virtual address 00006e78...
I've removed some network related lines from init to be able to get a little further.
Now any manual attepmt to address eth0 using ifconfig or ip gives either similar kernel paging error, or this one:
SIOCSIFFLAGS: No such device or address
Below is one of strace runs I've tried:
root@openipc-fh8856v100:/tmp# strace -i ifconfig eth0 up
[4024ff14] execve("/sbin/ifconfig", ["ifconfig", "eth0", "up"], 0xbee90e3c /* 13 vars */) = 0
[40206f14] set_tls(0x4025b4cc) = 0
[401cfbd0] set_tid_address(0x4025a7cc) = 596
[401dbf24] brk(NULL) = 0x4015e000
[401dbf44] brk(0x40160000) = 0x40160000
[401e4c50] mmap2(0x4015e000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4015e000
[401e4cac] mprotect(0x4015b000, 8192, PROT_READ) = 0
[402106c8] getuid32() = 0
[401eceac] socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 3
[401e2a58] ioctl(3, SIOCGIFFLAGS, {ifr_name="eth0", ifr_flags=IFF_BROADCAST|IFF_MULTICAST}) = 0
[401e2a58] ioctl(3, SIOCSIFFLAGS, {ifr_name="eth0", ifr_flags=IFF_UP|IFF_BROADCAST|IFF_RUNNING|IFF_MULTICAST}) = -1 ENXIO (No such device or address)
[40207148] write(2, "ifconfig: SIOCSIFFLAGS: No such "..., 50ifconfig: SIOCSIFFLAGS: No such device or address
) = 50
[401d04fc] exit_group(1) = ?
[????????] +++ exited with 1 +++enter code here
Logs show the fh_gmac driver loaded fine during the boot, but later eth0 could not be started:
root@openipc-fh8856v100:/tmp# dmesg | grep -i eth
[ 1.395036] fh_gmac fh_gmac.0: eth0: mixed HW and IP checksum settings.
[ 1.400892] fh_gmac fh_gmac.0: eth0: mixed no checksumming and other settings.
[ 1.408363] eth0 - (dev. name: fh_gmac - id: 0, IRQ #15
[ 130.106506] eth0: MII BUS or phydev is NULL
[ 308.876503] eth0: MII BUS or phydev is NULL
interfaces file looks fine to me:
root@openipc-fh8856v100:/etc/network# cat interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 169.254.38.1
netmask 255.255.255.0
gateway 169.254.38.163
dns-nameservers 169.254.38.163 8.8.8.8
The ethernet is working fine on this cam in the original firmware with almost identical settings.
Any advice is appreciated.
