[Yaffs] RootFS on Yaffs

[Peter Barada]

On Mon, 2006-03-13 at 18:00 -0600, Marco Caamano wrote:
> Hi,
> 
> I have the basic MTD and Yaffs driver working: I can mount mtd yaffs
> partitions, read write data to the partitions OK. But when I try to use
> a yaffs partition as the rootfs I get a:
> 
> Kernel panic: No init found.
> 
> The way I am "uploading" the data is that I first boot using an initrd
> image. Then I mount the yaffs partition and copy all the contents of the
> root fs to the yaffs partition (create the dev nodes, symlinks, etc..).
> Then I reboot and instruct the kernel to use yaffs as the root
> partition.
> 
> I've also tried passing the init=/sbin/init , init=/bin/sh, ...
> 
> Any suggestions on what could be the issue?

Try adding "rootfstype=yaffs" to the kernel command line to tell it that
its a YAFFS rootfs, and it won't try to probe for all the FS types since
YAFFS doesn't provide a magic number to identify the FS.

> 
> Marco
> 
> 
> Linux version 2.6.4-cadenux (mcaamano at warlock) (gcc version 3.2.3) #32
> Mon Mar 13 17:37:49 CST 2006
> CPU: ARM926EJ-Sid(wb) [41069263] revision 3 (ARMv5TEJ)
> CPU: D VIPT write-back cache
> CPU: I cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
> CPU: D cache: 8192 bytes, associativity 4, 32 byte lines, 64 sets
> Machine: DM320 EVM
> Memory policy: ECC disabled, Data cache writeback
> On node 0 totalpages: 14336
>   DMA zone: 14336 pages, LIFO batch:3
>   Normal zone: 0 pages, LIFO batch:1
>   HighMem zone: 0 pages, LIFO batch:1
> Built 1 zonelists
> Kernel command line: root=/dev/mtdblock3 rootfstype=yaffs
> PID hash table entries: 256 (order 8: 2048 bytes)
> Memory: 56MB = 56MB total
> Memory: 55044KB available (1356K code, 184K data, 60K init)
> Calibrating delay loop... 87.65 BogoMIPS
> Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
> Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
> Mount-cache hash table entries: 512 (order: 0, 4096 bytes)
> CPU: Testing write buffer coherency: ok
> POSIX conformance testing by UNIFIX
> NET: Registered protocol family 16
> Informing kernel about built-in devices
> ttyS0 at MMIO 0x30300 (irq = 12) is a DM320
> ttyS1 at MMIO 0x30380 (irq = 13) is a DM320
> RAMDISK driver initialized: 16 RAM disks of 8192K size 1024 blocksize
> loop: loaded (max 8 devices)
> eth0: cs8900 rev J found at 0xd8000300
> cs89x0: Extended EEPROM checksum bad and no Cirrus EEPROM, relying on
> command line
> cs89x0 media RJ-45, IRQ 27, programmed I/O, MAC 02:e0:de:ad:be:f1
> Using noop io scheduler
> NAND device: Manufacturer ID: 0xec, Chip ID: 0x73 (Samsung NAND 16MiB
> 3,3V 8-bit)
> Scanning device for bad blocks
> Using static partition definition
> MTD snapshot-20060224 [http://linux-mtd.infradead.org]
> Creating 5 MTD partitions on "NAND 16MiB 3,3V 8-bit":
> 0x0001c000-0x0003c000 : "Bootloader"
> 0x0003c000-0x0004c000 : "Bootloader Parameters"
> 0x0004c000-0x0024c000 : "Kernel Image"
> 0x0024c000-0x00a4c000 : "Primary File System"
> 0x00a4c000-0x01000000 : "Secondary File System"
> NET: Registered protocol family 2
> IP: routing cache hash table of 512 buckets, 4Kbytes
> TCP: Hash tables configured (established 4096 bind 8192)
> NET: Registered protocol family 1
> NET: Registered protocol family 17
> yaffs: Attempting MTD mount on 31.3
> VFS: Mounted root (yaffs filesystem) readonly.
> Freeing init memory: 60K
> Kernel panic: No init found.  Try passing init= option to kernel.
> 
> 
> 
> 
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