Re: RAMDISK on EP88xc

quoted

I haven't tried CONFIG_BLK_DEV or CONFIG_BLK_DEV_LOOP and am still
playing around with the values for CONFIG_BLK_DEV_RAM_COUNT and
CONFIG_BLK_DEV_RAM_SIZE. Strangely, the DEV_RAM defines are completely
missing from my config so I have to put them in manually... (as
opposed to via menuconfig). I'll post back when it's working or when
I've tried all of this and still am getting some error.

If you don't have CONFIG_BLK_DEV defined, you can't have CONFIG_BLK_DEV_R=

AM_COUNT

or CONFIG_BLK_DEV_RAM_SIZE. =A0Use 'menuconfig' to help straighten this o=

ut.

quoted

Meanwhile a side question - why does BLK_DEV_RAM_COUNT default to 16?

This is just the number of unique RAM disk devices supported.

I see, thanks Gary, I'll leave that unmodified then. I only really
need 1 but it doesn't seem to negatively affect anything if I leave it
at 16.

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@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=3DttyCPM0,9600n8 root=3D/dev/ram loglevel=3D7 =
init=3D/sbin/
init
NR_IRQS:512
PID hash table entries: 256 (order: 8, 1024 bytes)
Decrementer Frequency =3D 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 da=
ta, 9
9k bss, 112k init)
SLUB: Genslabs=3D12, HWalign=3D16, Order=3D0-3, MinObjects=3D0, CPUs=3D1, N=
odes=3D1
Calibrating delay loop... 12.39 BogoMIPS (lpj=3D61952)
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 =3D 19) is a CPM UART
f0000a20.serial: ttyCPM1 at MMIO 0xc5016a20 (irq =3D 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...