[U-Boot] booting os 'Unknown OS' (1) is not supported

[Alexander Khryukin]

Hello guys!
I faced with a strange behaviour of u-boot.
Few months ago i bought an ARM development board from yicsystem
it's based on exynos 5250 and very similar to arndale
http://www.yicsystem.com/products/low-cost-board/yse5250/

And i can boot Android ICS
but when i try to boot any linux
i always see


Checking Boot Mode ... SDMMC
Now running in RAM - U-Boot at: c3e00000
REVISION: 1.0
REVISION: 1.0
MMC Device 0: 3839 MB
NAME: S5P_MSHC0
MMC Device 1: 7348 MB
MMC Device 2 not found
Destroy Hash Table: c3f80f78 table = (null)
Create Hash Table: N=512
INSERT: table c3f80f78, filled 1/521 rv c3d047a0 ==> name="baudrate"
value="115200"
INSERT: table c3f80f78, filled 2/521 rv c3d0582c ==> name="bootargs"
value="root=/dev/mmcblk0p1"
INSERT: table c3f80f78, filled 3/521 rv c3d04a1c ==> name="bootcmd"
value="movi read kernel 0 40008000;movi read rootfs 0 41000000 100000;bootm
40008000 41000000"
INSERT: table c3f80f78, filled 4/521 rv c3d04f20 ==> name="bootdelay"
value="3"
INSERT: table c3f80f78, filled 5/521 rv c3d04bfc ==> name="bootfile"
value="/tftpboot/revoboot/bin/revoboot.pxe"
INSERT: table c3f80f78, filled 6/521 rv c3d040a4 ==>
name="emmcbootrecovery" value="mmc erase boot 1 0 0;emmc open 1;movi read
fwbl1 0 40000000;movi write zero fwbl1 1 40000000;movi read bl2 0
40004000;movi write zero bl2 1 40004000;movi read u-boot 0 42000000;movi
write zero u-boot 1 42000000;movi read tzsw 0 42100000;movi write zero tzsw
1 42100000;emmc close 1"
INSERT: table c3f80f78, filled 7/521 rv c3d04998 ==> name="ethact"
value="smc911x-0"
INSERT: table c3f80f78, filled 8/521 rv c3d0462c ==> name="ethaddr"
value="00:40:5c:26:0a:5b"
INSERT: table c3f80f78, filled 9/521 rv c3d057a8 ==> name="gatewayip"
value="192.168.0.1"
INSERT: table c3f80f78, filled 10/521 rv c3d05874 ==> name="ipaddr"
value="192.168.0.28"
INSERT: table c3f80f78, filled 11/521 rv c3d048c0 ==> name="netmask"
value="255.255.255.0"
INSERT: table c3f80f78, filled 12/521 rv c3d05214 ==> name="rootfslen"
value=" 100000"
INSERT: table c3f80f78, filled 13/521 rv c3d048e4 ==> name="serverip"
value="192.168.0.13"
INSERT: free(data = c3d00010)
INSERT: done
Net:   smc911x-0
### main_loop entered: bootdelay=3

### main_loop: bootcmd="movi read kernel 0 40008000;movi read rootfs 0
41000000 100000;bootm 40008000 41000000"
Hit any key to stop autoboot:  0
reading kernel..device 0 Start 1063, Count 16384
MMC read: dev # 0, block # 1063, count 16384 ... 16384 blocks read: OK
completed
reading RFS..device 0 Count 17447, Start 2048
MMC read: dev # 0, block # 17447, count 2048 ... 2048 blocks read: OK
completed
## Current stack ends at 0xc3cfbd98 *  kernel: cmdline image address =
0x40008000
## Booting kernel from Legacy Image at 40008000 ...
   Image Name:   Linux-3.12.0-rc1-armv7-x0.6-0012
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    3243400 Bytes = 3167 KiB
   Load Address: 40008000
   Entry Point:  40008000
   Verifying Checksum ... OK
   kernel data at 0x40008040, len = 0x00317d88 (3243400)
*  ramdisk: cmdline image address = 0x41000000
Wrong Ramdisk Image Format
   ramdisk start = 0x41000000, ramdisk end = 0x41000000
   XIP Kernel Image ... OK
OK
   kernel loaded at 0x40008000, end = 0x4031fd88
images.os.start = 0x40008000, images.os.end = 0x4031fdc8
images.os.load = 0x40008000, load_end = 0x4031fd88
*ERROR: booting os 'Unknown OS' (1) is not supported*





Unknown OS.
But i do not understand what i should change to proceed.
Any suggestions?