re: [linuxsh-dev] Ramdisk

[Studencki (e. P. <Paw...@er...>]

Hello,

Jaswinder, thanks for your help.

the problem is, i have already:
int rd_size = 4096;             /* Size of the RAM disks */

and wenn I'm trying to use RAM disk 4 MB I get these errors:
-------------------------------------------------------------------
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
RAMDISK: ext2 filesystem found at block 0
RAMDISK: Loading 4096 blocks [1 disk] into ram disk... <1>Unable to handle
kernel NULL pointer dereference at virtual address 00000000
pc = 8c00d842
Oops: 0001

PC  : 8c00d842 SP  : 8c1fbb20 SR  : 400001f1 TEA : 00000000
R0  : 400001f1 R1  : 00000000 R2  : 40000101 R3  : 8c1fbb34
R4  : 00000000 R5  : 00000000 R6  : 8c07fb14 R7  : 00000000
R8  : 00000000 R9  : 00000001 R10 : 00000400 R11 : 8ce8faa0
R12 : 8c1fa000 R13 : 8c081a3c R14 : 8c1fbb20
---------------------------------------------------------------------

After Your mail, I've increased size rd_size to 8192, but it doesn't
help...and I'm still using 2 MB RAM disk...

maybe has somebody tried to hard code kernel options (ramdisk_size,
ramdisk_start, mem etc.) ??
( I changed only arch/sh/kernel/setup.c, function parse_mem_cmdline, line 
memory_start = (unsigned long)PAGE_OFFSET+__MEMORY_START;
        /* Default is 4Mbyte. */
        memory_end = (unsigned long)PAGE_OFFSET+0x01000000+__MEMORY_START;
	
^^^^^^^^^^^^----- 16 MB RAM
 should I also modify variables argv_init, envp_init in init/main.c ? 
 or it is all a wrong way to solve this problem?


Regards
Pawel