How to create filesystem for linux4 with nios2

Could you please help me get unstuck? I'm stuck where Linux boots. I built latest version of Linux from Altera for my Altera DE2-115 FPGA. It won't boot properly because of something with the file system. Maybe you know what I should do? I suppose it is some option in make menuconfig but I don't know what do to.

Linux version 4.9.0-00104-g84d4f8a-dirty (developer@1604) (gcc version 6.2.0 (Sourcery CodeBench Lite 2016.11-32) )# 28 Wed Apr 5 04:23:07 CEST 2017
bootconsole  enabled
early_console initialized at 0xe8001440
On node 0 totalpages: 32768
free_area_init_node: node 0, pgdat c022166c, node_mem_map c0254b80
  Normal zone: 256 pages used for memmap
  Normal zone: 0 pages reserved
  Normal zone: 32768 pages, LIFO batch:7
pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
pcpu-alloc:  0 
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
Kernel command line: debug console=ttyAL0,115200
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)
Sorting __ex_table...
Memory: 127528K/131072K available (1750K kernel code, 66K rwdata, 284K rodata, 76K init, 191K bss, 3544K reserved, 0K cma-reserved)
SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
NR_IRQS:64 nr_irqs:64 0
clocksource: nios2-clksrc: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 38225208935 ns
Console: colour dummy device 80x25
Calibrating delay loop (skipped), value calculated using timer frequency.. 100.00 BogoMIPS (lpj=50000)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
cpu cpu0: Error -2 creating of_node link
clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns
random: fast init done
clocksource: Switched to clocksource nios2-clksrc
futex hash table entries: 256 (order: -1, 3072 bytes)
workingset: timestamp_bits=30 max_order=15 bucket_order=0
Block layer SCSI generic (bsg) driver version 0.4 loaded (major 254)
io scheduler noop registered
io scheduler deadline registered
io scheduler cfq registered (default)
8001440.serial: ttyJ0 at MMIO 0x8001440 (irq = 2, base_baud = 0) is a Altera JTAG UART
mousedev: PS/2 mouse device common for all mice
Warning: unable to open an initial console.
List of all partitions:
No filesystem could mount root, tried: 
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
random: crng init done