Subject: RAMDISK uncompress problem.

From: [email-masked]
Date: Sat, 10 Jul 1999 03:24:16 +0800

hello:
    i got a problem like this:

loaded at:     00100000 002C5AD0
board data at: 001001C4 001001E0
relocated to:  00200100 0020011C
zimage at:     0010B1F0 0013A3F3
initrd at:     0013A400 003116E2
avail ram:     00312000 01000000

Linux/PPC load:
Uncompressing Linux...done.
Now booting the kernel
Linux version 2.2.13 (root@bigeyes) (gcc version 2.95.2 19991024 (release)) #110
 Tue Apr 18 15:35:59 EDT 2000
Boot arguments: root=/dev/ram
time_init: decrementer frequency = 90000000/60
Calibrating delay loop... 23.81 BogoMIPS
Memory: 13768k available (356k kernel code, 352k data, 20k init) [c0000000,c1000
000]
DENTRY hash table entries: 262144 (order: 9, 2097152 bytes)
Buffer-cache hash table entries: 32768 (order: 5, 131072 bytes)
Page-cache hash table entries: 4096 (order: 2, 16384 bytes)
POSIX conformance testing by UNIFIX
Linux NET4.0 for Linux 2.2
Based upon Swansea University Computer Society NET3.039
Starting kswapd v 1.5
CPM UART driver version 0.02
ttyS00 at 0x0280 is a SMC
ttyS01 at 0x0100 is a SCC
ttyS02 at 0x0200 is a SCC
RAM disk driver initialized:  16 RAM disks of 4096K size
RAMDISK: Compressed image found at block 0
crc error!orig_crc=0xe211d8c1,CRC_VALUE=0x40e28495
length error! orig_len=0x400000,bytes_out=0x4000d5

i added some prink() for debug ... ;)
my ramdisk.image.gz is broken?
but i can mount(-o loop) it in my host(i386-linux) after gunziped.

and how to creat a correct ramdisk image?
    using following step?
        mkfs -t ext2 /dev/loop0
        mount /dev/loop0 /mnt/rd
                mkdir /mnt/rd/bin  /dev ...
                cp bash etc. to /mnt/rd/bin ...
                 mknod ....
        dd if=/dev/loop0 of=./ramdisk.image
        gzip -9 ramdisk.image

what can i do?

thanks for any help.

b.r.
john zhan.
hacking time.

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