Yes. I did use it.

 
 _____                            __  __ _
| ____|_ __   ___ _ __ __ _ _   _|  `/  (_) ___ _ __ ___
|  _| | '_ ` / _ ` '__/ _` | | | | |`/| | |/ __| '__/ _ `
| |___| | | |  __/ | | (_| | |_| | |  | | | (__| | | (_) |
|_____|_| |_|`___|_|  `__, |`__, |_|  |_|_|`___|_|  `___/
                      |___/ |___/

 

OSELAS(R)-Gecko-2012.10.0+ / energymicro-efm32gg-dk3750-2012.10.0+
ptxdist-2013.01.0/2013-06-08T14:52:01+0800

/ # /sbin/ifconfig eth0 192.168.0.100 netmask 255.255.255.0 up
/ # /sbin/route add default gw 192.168.0.1
/ # cat /proc/interrupts
           CPU0
  1:          0         -  efm32board
  4:          0  efm32board  eth0
 17:          0      NVIC  efm32-gpio
 27:          0      NVIC  efm32-gpio
 28:       6681      NVIC  efm32 clockevent
 31:        102      NVIC  efm32-spi
 32:         54      NVIC  efm32-spi
 38:         17      NVIC  efm32-uart
 39:        196      NVIC  efm32-uart
Err:          0
/ # /sbin/ifconfig
eth0      Link encap:Ethernet  HWaddr D6:C5:6F:EC:7B:F1
          inet addr:192.168.0.100  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:4

/ # ping 192.168.0.100
No response from 192.168.0.100
/ # cat /proc/interrupts
           CPU0
  1:          0         -  efm32board
  4:          0  efm32board  eth0
 17:          0      NVIC  efm32-gpio
 27:          0      NVIC  efm32-gpio
 28:       9853      NVIC  efm32 clockevent
 31:        102      NVIC  efm32-spi
 32:         54      NVIC  efm32-spi
 38:         67      NVIC  efm32-uart
 39:        570      NVIC  efm32-uart
Err:          0
/ # dmesg
<4>[    0.000000] CPU: ARMv7-M Processor [412fc231] revision 1 (ARMv7M), cr=00000000
<4>[    0.000000] CPU: unknown data cache, unknown instruction cache
<6>[    0.000000] Machine: EFM32 (Device Tree Support), model: Energy Micro Giant Gecko Development Kit
<6>[    0.000000] debug: ignoring loglevel setting.
<7>[    0.000000] On node 0 totalpages: 1024
<7>[    0.000000] free_area_init_node: node 0, pgdat 8802103c, node_mem_map 88000000
<7>[    0.000000]   Normal zone: 8 pages used for memmap
<7>[    0.000000]   Normal zone: 0 pages reserved
<7>[    0.000000]   Normal zone: 1024 pages, LIFO batch:0
<7>[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
<7>[    0.000000] pcpu-alloc: [0] 0
<4>[    0.000000] Built 1 zonelists in Zone order, mobility grouping off.  Total pages: 1016
<5>[    0.000000] Kernel command line: console=ttyefm4,115200 init=/linuxrc ignore_loglevel ihash_entries=64 dhash_entries=64 earlyprintk uclinux.physaddr=0x8c400000 root=/dev/mtdblock0
<6>[    0.000000] PID hash table entries: 16 (order: -6, 64 bytes)
<6>[    0.000000] Dentry cache hash table entries: 64 (order: -4, 256 bytes)
<6>[    0.000000] Inode-cache hash table entries: 64 (order: -4, 256 bytes)
<6>[    0.000000] Memory: 4MB = 4MB total
<5>[    0.000000] Memory: 3888k/3888k available, 208k reserved, 0K highmem
<5>[    0.000000] Virtual kernel memory layout:
<5>[    0.000000]     vector  : 0x00000000 - 0x00001000   (   4 kB)
<5>[    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
<5>[    0.000000]     vmalloc : 0x00000000 - 0xffffffff   (4095 MB)
<5>[    0.000000]     lowmem  : 0x88000000 - 0x88400000   (   4 MB)
<5>[    0.000000]       .text : 0x8c000000 - 0x8c134cfc   (1236 kB)
<5>[    0.000000]       .init : 0x8800a000 - 0x8800d000   (  12 kB)
<5>[    0.000000]       .data : 0x88008000 - 0x88021640   ( 102 kB)
<5>[    0.000000]        .bss : 0x88021640 - 0x88028d5c   (  30 kB)
<6>[    0.000000] SLUB: Genslabs=13, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
<6>[    0.000000] Preemptible hierarchical RCU implementation.
<6>[    0.000000] NR_IRQS:82
<6>[    0.000000] sched_clock: 32 bits at 100 Hz, resolution 10000000ns, wraps every 4294967286ms
<6>[    0.140000] Calibrating delay loop... 1.36 BogoMIPS (lpj=6816)
<6>[    0.150000] pid_max: default: 4096 minimum: 301
<6>[    0.170000] Mount-cache hash table entries: 512
<6>[    0.530000] NET: Registered protocol family 16
<6>[    1.030000] bio: create slab <bio-0> at 0
<6>[    1.130000] Switching to clocksource efm32 timer
<6>[    1.250000] NET: Registered protocol family 2
<6>[    1.360000] TCP established hash table entries: 512 (order: 0, 4096 bytes)
<6>[    1.370000] TCP bind hash table entries: 512 (order: -1, 2048 bytes)
<6>[    1.370000] TCP: Hash tables configured (established 512 bind 512)
<6>[    1.380000] TCP: reno registered
<6>[    1.380000] UDP hash table entries: 256 (order: 0, 4096 bytes)
<6>[    1.390000] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
<6>[    1.430000] NET: Registered protocol family 1
<6>[    2.470000] ROMFS MTD (C) 2007 Red Hat, Inc.
<6>[    2.510000] io scheduler noop registered (default)
<6>[    2.520000] 4000e400.uart: ttyefm4 at MMIO 0x4000e400 (irq = 38) is a efm32-uart
<6>[    2.940000] console [ttyefm4] enabled
<6>[    3.000000] EFM32 UART/USART driver
<4>[    3.120000] uclinux[mtd]: probe address=0x8c400000 size=0x29000
<5>[    3.130000] Creating 1 MTD partitions on "rom":
<5>[    3.140000] 0x000000000000-0x000000029000 : "ROMfs"
<6>[    3.330000] efm32-spi 4000c400.spi: master is unqueued, this is deprecated
<6>[    3.380000] ks8851 spi32766.0: message enable is 0
<6>[    3.610000] ks8851 spi32766.0 eth0: revision 1, MAC d6:c5:6f:ec:7b:f1, IRQ 4, has EEPROM
<6>[    3.720000] TCP: cubic registered
<6>[    3.720000] NET: Registered protocol family 17
<6>[    3.910000] VFS: Mounted root (romfs filesystem) readonly on device 31:0.
<6>[    3.940000] Freeing init memory: 12K