RAMDISK on EP88xc

[Mikhail Zaturenskiy]

> Just as an intermediate update on the issue, I've made progress and it
> hangs later down the line, see below:
> ************************************************************************************
> Using Embedded Planet EP88xC machine description
> Linux version 2.6.30-rc2-01402-gd4e2f68-dirty (devone at localhost.localdomain) (gc
> c version 4.2.2) #3 Thu Jul 2 11:00:54 CDT 2009
> Found initrd at 0xc3dbb000:0xc3f6d056
> Zone PFN ranges:
>  DMA      0x00000000 -> 0x00004000
>  Normal   0x00004000 -> 0x00004000
> Movable zone start PFN for each node
> early_node_map[1] active PFN ranges
>    0: 0x00000000 -> 0x00004000
> MMU: Allocated 72 bytes of context maps for 16 contexts
> Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 16256
> Kernel command line: console=ttyCPM0,9600n8 root=/dev/ram loglevel=7 init=/sbin/
> init
> NR_IRQS:512
> PID hash table entries: 256 (order: 8, 1024 bytes)
> Decrementer Frequency = 0x5f5e10
> clocksource: timebase mult[28000000] shift[22] registered
> console [ttyCPM0] enabled
> Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
> Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
> Memory: 60716k/65536k available (2136k kernel code, 4752k reserved, 100k data, 9
> 9k bss, 112k init)
> SLUB: Genslabs=12, HWalign=16, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
> Calibrating delay loop... 12.39 BogoMIPS (lpj=61952)
> Mount-cache hash table entries: 512
> net_namespace: 296 bytes
> NET: Registered protocol family 16
> bio: create slab <bio-0> at 0
> NET: Registered protocol family 2
> IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
> TCP established hash table entries: 2048 (order: 2, 16384 bytes)
> TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
> TCP: Hash tables configured (established 2048 bind 2048)
> TCP reno registered
> NET: Registered protocol family 1
> checking if image is initramfs...
> rootfs image is not initramfs (no cpio magic); looks like an initrd
> Freeing initrd memory: 1736k freed
> msgmni has been set to 122
> io scheduler noop registered
> io scheduler deadline registered (default)
> Generic RTC Driver v1.07
> f0000a80.serial: ttyCPM0 at MMIO 0xc500ea80 (irq = 19) is a CPM UART
> f0000a20.serial: ttyCPM1 at MMIO 0xc5016a20 (irq = 29) is a CPM UART
> brd: module loaded
> loop: module loaded
> eth0: fs_enet: 00:00:00:00:00:00
> eth1: fs_enet: 00:00:00:00:00:00
> FEC MII Bus: probed
> fe000000.flash: Found 2 x16 devices at 0x0 in 32-bit bank
>  Amd/Fujitsu Extended Query Table at 0x0040
> fe000000.flash: CFI does not contain boot bank location. Assuming top.
> number of CFI chips: 1
> cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.
> TCP cubic registered
> NET: Registered protocol family 17
> RPC: Registered udp transport module.
> RPC: Registered tcp transport module.
> RAMDISK: gzip image found at block 0
> VFS: Mounted root (ext2 filesystem) readonly on device 1:0.
> Freeing unused kernel memory: 112k init
> ************************************************************************************
>
> Now searching for cause, looks like it's "init" related...
>

Wow... I just found out that it's not actually "hanging" at this
point.. it's just working in "slow motion"... I found out by leaving
the machine and coming back half an hour later to find additional
output and eventually even a prompt.

Here is what's happening:
*************************************************************************
RAMDISK: gzip image found at block 0
VFS: Mounted root (ext2 filesystem) on device 1:0.
Freeing unused kernel memory: 112k init

<4 minutes pass>

init started: BusyBox v1.7.1 (2008-04-02 09:14:47 MEST)

<2 minutes pass>

starting pid 403, tty '': '/etc/rc.sh'

< etc... >
*************************************************************************

I've tried a couple different ramdisk images (another one with a much
older version of busybox), with similar results. Anybody have an idea
about what's going on here?