Cannot start busybox on mips target

linux-2.6.26.5
busybox-1.13.1
uClibc-0.9.30
target: broadcom BCM56224

Hello to everybody

I'm tryng to bring up busybox embedded in my initramfs.
After the boot i get the message
Kernel panic - not syncing: Attempted to kill init!

Using a simple hello C program instead of busybox I can happly get the "Hello world" to the console.

I suspect that I'm missing some fundamental bits in my initramfs

dir /proc 755 0 0
dir /sys 755 0 0
dir /mnt 755 0 0
dir /root 755 0 0

dir /dev 755 0 0
nod /dev/console 644 0 0 c 5 1
nod /dev/ttyS0 644 0 0 c 4 64
nod /dev/loop0 644 0 0 b 7 0
dir /bin 755 0 0
dir /sbin 755 0 0
dir /etc 755 0 0
file /bin/busybox /home/selva/mips/busybox-1.10.1/busybox 755 0 0
#file /bin/busybox /home/selva/mips/busybox-1.13.1/busybox 755 0 0
#file /bin/busybox /home/selva/mips/target/bin/busybox 755 0 0 (troppo grosso)

slink /bin/init /bin/busybox 777 0 0
#slink /sbin/init /bin/hello 777 0 0
slink /sbin/init /bin/busybox 777 0 0

file /bin/hello usr/hello 755 0 0
file /etc/inittab rootfs/etc/inittab 755 0 0

It seems to me that busybox dies at beginning.
I tried also to put on it some printf at very beginning main() but I can't see nothing on the console.
Why ? The kernel panic stops everyting before any user message can go through ?

I'm clueless so any pointer to make more investigation is very welcomed

Thanks
Andrea

Hoping someone is willing to help (please ) below some prints I did in the kernel to further understand this mess

Linux version 2.6.26.5 (selva@bswlab.vim.tlt.alcatel.it) (libc/sysdeps/linux/mi8console [early0] enabled
CPU revision is: 00029050 (Broadcom BCM3302)
DBG drivers/ssb/scan.c:293: ssb_bus_scan() *SSB_CHIPCO_CHIPID=0x0011b224
bus->chipco.capabilitie=0x00000001
ssb: Core 0 found: ChipCommon (cc 0x800, rev 0x00, vendor 0x0000)
ssb: Core 1 found: UNKNOWN (cc 0x000, rev 0x00, vendor 0x0000)
ssb: Sonics Silicon Backplane found at address 0x18000000
Determined physical RAM map:
 memory: 08000000 @ 00000000 (usable)
DBG arch_mem_init(): arcs_cmdline=console=ttyS0,9600 ip=any
Initrd not found or empty - disabling initrd
Zone PFN ranges:
  Normal          0 ->    32768
Movable zone start PFN for each node
early_node_map[1] active PFN ranges
    0:        0 ->    32768
Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 32512
Kernel command line: console=ttyS0,9600 ip=any
Primary instruction cache 32kB, VIPT, 4-way, linesize 16 bytes.
Primary data cache 32kB, 2-way, VIPT, cache aliases, linesize 16 bytes
PID hash table entries: 512 (order: 9, 2048 bytes)
Console: colour dummy device 80x25
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 126820k/131072k available (1686k kernel code, 4140k reserved, 389k data)SLUB: Genslabs=6, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
Mount-cache hash table entries: 512
DBG main.c:850 kernel_init()
DBG main.c:do_basic_setup()
net_namespace: 512 bytes
NET: Registered protocol family 16
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 4, 81920 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
NET: Registered protocol family 1
DBG initramfs.c:populate_rootfs()
DBG initramfs.c:459 len=618874 gunzip=8020b3d0
msgmni has been set to 247
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
ttyS0: autoconf (0x0000, 0xb8000300)o3.6.6type=16550A
serial8250.0: ttyS0 at MMIO 0x0 (irq = 3) is a 16550A
*****************
console handover: boot [early0] -> real [ttyS0]
TCP cubic registered
NET: Registered protocol family 17
DBG main.c:885 ramdisk_execute_command = <NULL>
Freeing unused kernel memory: 720k freed
DBG serial8250_startup()
*****************
DBG main.c:821 ramdisk_execute_command = <NULL>
DBG main.c:834 execute_command = <NULL>
DBG main.c:run_init_process execute_command(/sbin/init)
DBG exit.c:932
Kernel panic - not syncing: Attempted to kill init!