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RE: [microblaze-uclinux] uclinux boot problem (kernel panic)
hi
Are you using the romfs for root file system? I would try passing a
cmdline to the kernel. First, unless you are using a correct bootloader,
deselect the cmdline option in the kernel menu. The in
linux-2.4.x/arch/microblaze/setup.c you will find:
void *bootloader_buf_addr = 0xFFFFFFFF
change it to
char command_line[512] = "rootfstype=romfs"
or what ever root file system you are using.
Also the rom map doesn't match the type of flash you have. The flash
maps are in driver/mtd/maps/mb_auto.c
gesmith
On Tue, 2006-03-21 at 00:36, Sanjay Patel wrote:
> Hi,
>
> We tried the options & debug solutions given on the following link:
>
> http://www.ucdot.org/article.pl?sid=03/01/11/1049210&mode=thread.
>
> We obtain the following log on the hyperterminal:
>
> Log File:
>
>
> Linux version 2.4.32-uc0 (root@localhost) (gcc version 3.4.1 ( Xilinx
> EDK 8.1 Bu
>
>
> ild EDK_I.17 121005 )) #18 Sat Mar 18 12:06:57 IST 2006
>
>
> On node 0 totalpages: 16384
>
> zone(0): 16384 pages.
>
> zone(1): 0 pages.
>
> zone(2): 0 pages.
>
> CPU: MICROBLAZE
>
> Kernel command line: °
>
> Console: xmbserial on UARTLite
>
> Calibrating delay loop... 33.07 BogoMIPS
>
>
> Memory: 64MB = 64MB total
>
> Memory: 63080KB available (709K code, 1033K data, 40K init)
>
>
> Dentry cache hash table entries: 8192 (order: 4, 65536 bytes)
>
>
> Inode cache hash table entries: 4096
>
> Mount cache hash table entries: 512 (order: 0, 4096 bytes)
>
>
> Buffer cache hash table entries: 4096 (order: 2, 16384 bytes)
>
>
> Page-cache hash table entries: 16384 (order: 4, 65536 bytes)
>
>
> POSIX conformance testing by UNIFIX
>
> Linux NET4.0 for Linux 2.4
>
> Based upon Swansea University Computer Society NET3.039
>
>
> Microblaze UARTlite serial driver version 1.00
>
>
> ttyS0 at 0x40600000 (irq = 8) is a Microblaze UARTlite
>
>
> Starting kswapd
>
> RAMDISK driver initialized: 16 RAM disks of 67108864K size 1024
> blocksize
>
>
> uclinux[mtd]: RAM probe address=0x240e2840 size=0xd2000
>
>
> uclinux[mtd]: root filesystem index=0
>
>
> MicroBlaze auto-config flash probe(0x22000000,8388608,4): 800000 at
> 22000000
>
>
> cfi_cmdset_0001: Erase suspend on write enabled
>
>
> 0: offset=0x0,size=0x40000,blocks=32
>
> Using buffer write method
>
> Creating 8 MTD partitions on "Flash":
>
>
> 0x00000000-0x00004000 : "Bootloader"
>
> mtd: partition "Bootloader" doesn't end on an erase block -- force
> read-only
>
> 0x00004000-0x00008000 : "Bootargs"
>
> mtd: partition "Bootargs" doesn't start on an erase block boundary --
> force read
>
> -only
>
> 0x00008000-0x0000c000 : "MAC"
>
> mtd: partition "MAC" doesn't start on an erase block boundary -- force
> read-only
>
>
>
> 0x00010000-0x00020000 : "Config"
>
> mtd: partition "Config" doesn't start on an erase block boundary --
> force read-o
>
> nly
>
> 0x0000c000-0x00010000 : "Spare"
>
> mtd: partition "Spare" doesn't start on an erase block boundary -- force
> read-on
>
> ly
>
> 0x00100000-0x00400000 : "Image"
>
> 0x00400000-0x00800000 : "JFFS2"
>
> 0x00000000-0x00800000 : "Flash"
>
> MicroBlaze auto-config ram probe(0x240e2840,860160,4): d2000 at 240e2840
>
> Creating 1 MTD partitions on "RAM":
>
> 0x00000000-0x000d2000 : "Romfs"
>
> *******
>
> VFS: test name = </dev/root>
>
> VFS: fs_name = <ext2>
>
> VFS: fs_name = <romfs>
>
> VFS: root name <1f:09>
>
> *******
>
> VFS: tried fs_name = <ext2> err= -6
>
>
>
> VFS: Cannot open root device "" or 1f:09
>
> Please append a correct "root=" boot option
>
> Kernel panic: VFS: Unable to mount root fs on 1f:09
>
>
>
> It is not trying to mount the romfs partition. What could be the
> problem? Are there any changes required in any source file? Is there any
> step missing for kernel compilation? Please guide us.
>
> Regards
> Sanjay Patel
> Embedded Engineer - Embedded Division
> eInfochips Ltd
> Phone: +91-79-55425187, 55457574 -Ext-118
> Mobile: 98980-84637
>
>
>
>
> -----Original Message-----
> From: owner-microblaze-uclinux@xxxxxxxxxxxxxx
> [mailto:owner-microblaze-uclinux@xxxxxxxxxxxxxx] On Behalf Of
> Brettschneider Falk
> Sent: Monday, March 20, 2006 1:03 PM
> To: 'microblaze-uclinux@xxxxxxxxxxxxxx'
> Subject: RE: [microblaze-uclinux] uclinux boot problem (kernel panic)
>
> Hi,
>
> your root filesystem is at index 0, that means the first MTD partition.
> But
> there's the bootloader. Your last MTD partition contains the "Romfs", so
> the
> log entry should actually be uclinux[mtd]: root filesystem index=0. That
> may
> be reason for the behaviour. This link might help you to find a
> solution:
> http://www.ucdot.org/article.pl?sid=03/01/11/1049210&mode=thread.
>
> -----Original Message-----
> From: Sanjay Patel
> >
> >
> >Hi everybody,
> >
> >We programmed the linear flash memory with the tool (Programming Flash
> Memory) provided within XPS. It allows programming the flash >with .srec
> file.
> >The image.srec file generated after following kernel compilation steps
> provided was used for programming.
> >
> >The OUTPUT on the hyperterminal was as follows:
> >
> ...8< snip
> >
> >What could be the problem? Are we wrong anywhere? Are we missing any
> step
> to follow?
> >Please guide us!
> >
> >The board used by us is ML402 Board! The version is RevB. The size of
> flash
> memory is 8MB on board.
> ___________________________
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> Mailing List Archive :
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>
>
>
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--
George Smith
VP Engineering
Linear Acoustic, Inc
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