M5485EVB & ltib-mcf547x_8x-20070107

[pierrick]

Hi, (sorry for my bad english)
I work on  evaluation board M5485evb.
I want to install the Linux BSP that is on freescale website (ltib-mcf547x_8x-20070107).
I have made many tests, but it doesn't work ... always crashing on :

"Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)"

Code:

colilo>g 2000
Linux version 2.6.10 (pierrick@localhost) (gcc version 4.1.1 (CodeSourcery Sou
ery G++ 4.1-30)) #18 Mon Feb 18 18:17:30 CET 2008
starting up linux rev 0.2: startmem 0xc029c000, size 61MB
Built 1 zonelists
Kernel command line: root=/dev/ram
PID hash table entries: 512 (order: 9, 8192 bytes)
RTC driver is not initialized yet, returning 1970.
Console: colour dummy device 80x25
Dentry cache hash table entries: 16384 (order: 3, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 2, 32768 bytes)
Memory: 62352k/65536k available (1976k kernel code, 1016k data, 96k init)
Mount-cache hash table entries: 1024 (order: 0, 8192 bytes)
NET: Registered protocol family 16
Linux/m68k PCI BIOS32 revision 0.05
ColdFire PCI Host Bridge (Rev. 0) detected
PCI: Probing PCI hardware
ColdFire internal SEC driver version 0.11
MCF547x/8x SEC device driver installed
SCSI subsystem initialized
NET: Registered protocol family 23
Initialize Multi-channel DMA API Alpha v0.3 (2004-04-26)
JFFS2 version 2.2. (C) 2001-2003 Red Hat, Inc.
Initializing Cryptographic API
rtc: RV5C387 RTC driver successfully loaded
ColdFire watchdog driver is loaded.
MCF547x/8x DSPI device driver installed
Coldfire DSPI driver is loaded
ColdFire internal UART serial driver version 1.00
ttyS0 at 0xe0008600 (irq = 99) is a builtin ColdFire UART
ttyS1 at 0xe0008700 (irq = 98) is a builtin ColdFire UART
ttyS2 at 0xe0008800 (irq = 97) is a builtin ColdFire UART
ttyS3 at 0xe0008900 (irq = 96) is a builtin ColdFire UART
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
loop: loaded (max 8 devices)
ColdFire internal FEC driver version 0.11
elevator: using anticipatory as default io scheduler
Unlock all sector for Intel on Fire Engine...
physmap flash device: 1000000 at f0000000
phys_mapped_flash: Found 1 x16 devices at 0x0 in 16-bit bank
 Intel/Sharp Extended Query Table at 0x0031
Using buffer write method
cfi_cmdset_0001: Erase suspend on write enabled
RedBoot partition parsing not available
Using physmap partition definition
Creating 2 MTD partitions on "phys_mapped_flash":
0x00000000-0x00040000 : "Colilo (256K)"
0x00040000-0x00200000 : "user (other Flash memory) 2Mb-256K"
mice: PS/2 mouse device common for all mice
i2c /dev entries driver
i2c-algo-mcf.o: I2C ColdFire algorithm module is loaded.
NET: Registered protocol family 2
IP: routing cache hash table of 1024 buckets, 8Kbytes
TCP: Hash tables configured (established 8192 bind 16384)
Initializing IPsec netlink socket
NET: Registered protocol family 1
NET: Registered protocol family 17
NET: Registered protocol family 15
IrCOMM protocol (Dag Brattli)
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)

 

A time, I don't need special config, but only a Linux which run only in RAM.
My last config attempt is on attached file...

So, could you help me please...

• what is exactly this "vfs" problem ?
• could you give me a working config please ?

thanks,

Pierrick
linux_config.txt

Message Edited by t.dowe on 2009-09-04 02:40 PM

[pierrick]

Hi,

Since my question of yesterday, I have fund some things.
If I understand well :
VFS is the virtual filesystem which give to system the methods to use real filesystem.
In my case, real filesystem must be in RAM.

So, which filesystem must I use ?
cramfs is on RAM, but I have read somewhere that root can't be mount in cramfs. it's right ?

With 2.4 kernel that I have used, filesystem is already include in file "image.bin" which seems to be a concatenation of linux kernel "linux.bin" and filesystem "romfs.img"...
In 2.6 kernel, I have only "vmlinux.bin" and filesystem "cramfs.big" or "routfs.jffs2" or others ...
How can I install my filesystem (and where) and link it to VFS.

Thanks,
Pierrick