[linuxsh-dev] Problems mounting ramdisk

[Dustin M. <du...@se...>]

Hi. I'm working on an SH7751 based platform(Big Sur), and I'm trying to get
the generic SH7750 kernel running. However, I'm having some trouble getting
the kernel to find my compressed ramdisk image.  The ramdisk image is
located in the boot flash at physical address 0x800000.  It appears that the
ram disk block size is 1KB, so I've tried several derivatives of
'ramdisk_start=0x2000', but to no avial.  I get keep getting messages that
no ram disk image can be found at whatever address I use.  What are the
command line parameters I need to use to get the kernel to find the image?
Part of my problem is that I don't know if virtual memory is being used at
this point, nor do I know how the physical memory space has been mapped into
the virtual memory space.  If anyone could be of assistance it would be
greatly appreciated.
Dustin.

(gdb) cont
Continuing.
Linux version 2.4.1-pre2 (du...@du...) (gcc version 2.97
20001120 (experimental)) #4 Sun Jan 21 17:17:43 PST 2001
Warning: Unsupported machine generic, using unknown
On node 0 totalpages: 16384
zone(0): 16384 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: mem=64M sh_mv=generic console=ttySC1,57600
ramdisk_start=0x2000
Setting GDB trap vector to 0xa0000100
CPU clock: 166.66MHz
Bus clock: 83.33MHz
Module clock: 41.66MHz
Interval = 104163
Linux version 2.4.1-pre2 (du...@du...) (gcc version 2.97
20001120 (experimental)) #4 Sun Jan 21 17:17:43 PST 2001
Warning: Unsupported machine generic, using unknown
On node 0 totalpages: 16384
zone(0): 16384 pages.
zone(1): 0 pages.
zone(2): 0 pages.
Kernel command line: mem=64M sh_mv=generic console=ttySC1,57600
ramdisk_start=0x2000
Setting GDB trap vector to 0xa0000100
CPU clock: 166.66MHz
Bus clock: 83.33MHz
Module clock: 41.66MHz
Interval = 104163
Calibrating delay loop... 166.29 BogoMIPS
Memory: 63116k/65536k available (485k kernel code, 2420k reserved, 18k data,
28k init)
Dentry-cache hash table entries: 8192 (order: 4, 65536 bytes)
Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes)
Page-cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 4096 (order: 3, 32768 bytes)
CPU: SH7750
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Starting kswapd v1.8
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
RAMDISK: Couldn't find valid RAM disk image starting at 8192.
Freeing initrd memory: 640k freed
SuperH SCI(F) driver initialized
ttySC0 at 0xffe00000 is a SCI
ttySC1 at 0xffe80000 is a SCIF

Program exited normally.
(gdb)