Embedded linux bootstraping, ликбез Опции

[3.14]

Начало обсуждения здесь: http://electronix.ru/forum/index.php?showtopic=33796
Т.е. на данный момент, моя железяка после загрузки ядра пытается смонтировать корневую через NFS (насколько я понимаю).
Начитавшись этого http://www.opennet.ru/base/sys/initrd_intro.txt.html я окончательно запутался.
Здесь инструкции по сборке и запуску линуха на колибри: http://www.vollmann.net/colibri/colibri-bs...ing-started.txt
Там ни слова не говорится о initrd файловой системе ...
Прокомментируйте плиз следующие инструкции по сборке ядра линуха:

$ arm-linux-objcopy -O binary -R .note -R .comment -S vmlinux linux.bin
$ gzip -c -9 linux.bin > linux.bin.gz
$ $PROJECT/colibri-bsp-x.x/bin/mkimage -A arm -O linux -T kernel -C gzip \
-a 0xa0008000 -e 0xa0008000 -n "Linux Kernel Image" -d linux.bin.gz uImage

[3.14]

Итак, начал ковыряться с самодельной железякой на PXA270, стоит 128М SDRAM и 4M NOR флеши.
Пытаюсь подмонтировать корневуху через рамдиск (полученый описаным выше скриптом) получаю следующее:

Код

u-boot$ imls
Image at 00060000:
   Image Name:   Linux Kernel Image
   Created:      2007-08-31   7:21:49 UTC
   Image Type:   ARM Linux Kernel Image (gzip compressed)
   Data Size:    1064735 Bytes =  1 MB
   Load Address: a0008000
   Entry Point:  a0008000
   Verifying Checksum ... OK
Image at 001E0000:
   Image Name:   Initial RAM disk image
   Created:      2007-07-13   3:54:11 UTC
   Image Type:   ARM Linux RAMDisk Image (gzip compressed)
   Data Size:    282752 Bytes = 276.1 kB
   Load Address: a1000000
   Entry Point:  a1000000
   Verifying Checksum ... OK
u-boot$ cp.b 1e0000 a1000000 60000
u-boot$ boot
## Booting image at 00060000 ...
   Image Name:   Linux Kernel Image
   Created:      2007-08-31   7:21:49 UTC
   Image Type:   ARM Linux Kernel Image (gzip compressed)
   Data Size:    1064735 Bytes =  1 MB
   Load Address: a0008000
   Entry Point:  a0008000
   Verifying Checksum ... OK
   Uncompressing Kernel Image ... OK

Starting kernel ...

Linux version 2.6.12.4-col2 (pi@linuxServer) (gcc version 3.3.2) #5 Fri Aug 31 12:21:25 SAMST 2007
CPU: XScale-PXA270 [69054117] revision 7 (ARMv5TE)
CPU0: D VIVT undefined 5 cache
CPU0: I cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
CPU0: D cache: 32768 bytes, associativity 32, 32 byte lines, 32 sets
Machine: Toradex Colibri Module
Ignoring unrecognised tag 0x00000000
Ignoring unrecognised tag 0x00000000
Memory policy: ECC disabled, Data cache writeback
Run Mode clock: 208.00MHz (*16)
Turbo Mode clock: 520.00MHz (*2.5, active)
Memory clock: 208.00MHz (/2)
System bus clock: 208.00MHz
Built 1 zonelists
Kernel command line: root=/dev/ram0 rw initrd=0xa1000000,0x400000 ramdisk_size=4000 console=ttyS0,115200n8 mem=128M
PID hash table entries: 1024 (order: 10, 16384 bytes)
Console: colour dummy device 80x30
Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
Memory: 128MB = 128MB total
Memory: 123392KB available (1829K code, 361K data, 92K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
checking if image is initramfs...it isn't (bad gzip magic numbers); looks like an initrd
Freeing initrd memory: 4096K
NET: Registered protocol family 16
SCSI subsystem initialized
usbcore: registered new driver hub
NetWinder Floating Point Emulator V0.97 (double precision)
JFFS2 version 2.2. (C) 2001-2003 Red Hat, Inc.
ttyS0 at MMIO 0x40100000 (irq = 22) is a FFUART
ttyS1 at MMIO 0x40200000 (irq = 21) is a BTUART
ttyS2 at MMIO 0x40700000 (irq = 20) is a STUART
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 4000K size 1024 blocksize
PPP generic driver version 2.4.2
dm9000 Ethernet Driver
dm9000: read wrong id 0x2b2a2928
dm9000: read wrong id 0x2b2a2928
dm9000: wrong id: 0x2b2a2928
dm9000: not found (0).
Probing Colibri flash at physical address 0x00000000 (16-bit buswidth)
Colibri flash: Found 1 x16 devices at 0x0 in 16-bit bank
Intel/Sharp Extended Query Table at 0x0031
Using buffer write method
cfi_cmdset_0001: Erase suspend on write enabled
Creating 3 MTD partitions on "Colibri flash":
0x00000000-0x00060000 : "Bootloader"
0x00060000-0x001e0000 : "Kernel"
0x001e0000-0x00400000 : "Filesystem"
usbmon: debugs is not available
Setting port 3 power failed.
pxa27x-ohci pxa27x-ohci: PXA27x OHCI
pxa27x-ohci pxa27x-ohci: new USB bus registered, assigned bus number 1
pxa27x-ohci pxa27x-ohci: irq 3, io mem 0x4c000000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.01:USB HID core driver
mice: PS/2 mouse device common for all mice
NET: Registered protocol family 2
IP: routing cache hash table of 1024 buckets, 8Kbytes
TCP established hash table entries: 8192 (order: 4, 65536 bytes)
TCP bind hash table entries: 8192 (order: 3, 32768 bytes)
TCP: Hash tables configured (established 8192 bind 8192)
NET: Registered protocol family 1
RAMDISK: Couldn't find valid RAM disk image starting at 0.
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)

Интересно, чего его мой RAMDISK не устраивает ...