unable to load cramfs

[Altera_Forum]

hello friends 

 i am using cramfs .i have compressed kernel . i have stored u-boot at 0x0 ,cramfs at 0x00100000 and kernel image at 0x00020000. my flash is 2MB(0x00000000 to 0x00200000).and sdram is 8Mb(0x00800000 to 0x00f00000). but when give command " bootm 0x0002000" on hyperterminel then i get o/p on console like:  uClinux/Nios II  Altera Nios II support © 2004 Microtronix Datacom Ltd.  Built 1 zonelists  Kernel command line: root=/dev/mtdblock0 ro  PID hash table entries: 64 (order: 6, 1024 bytes)  Dentry cache hash table entries: 2048 (order: 1, 8192 bytes)  Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)  Memory available: 6948k/8192k RAM, 0k/0k ROM (883k kernel code, 241k data)  Mount-cache hash table entries: 512 (order: 0, 4096 bytes)  Linux NoNET1.0 for Linux 2.6  Serial: JTAG UART driver $Revision: 1.4 $  ttyJ0 at MMIO 0x80220820 (irq = 1) is a jtag_uart  io scheduler noop registered  io scheduler anticipatory registered  io scheduler deadline registered  io scheduler cfq registered  RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize  ALTERA map: Found 1 x16 devices at 0x0 in 16-bit bank   Amd/Fujitsu Extended Query Table at 0x0040  number of CFI chips: 1  cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.  cmdlinepart partition parsing not available  RedBoot partition parsing not available  Using up3 development partition definition  Creating 2 MTD partitions on "ALTERA":  0x00100000-0x00200000 : "romfs"  0x00000000-0x00100000 : "loader/kernel"  Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,0)

[Altera_Forum]

Hi slsnios, 

 > Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(31,0)  There are many possible causes.  First, make sure you don't have the broken cramfs code. See: http://forum.niosforum.com/forum/index.php...=2383&hl=cramfs (http://forum.niosforum.com/forum/index.php?showtopic=2383&hl=cramfs)  Once you're sure your cramfs code is clean, you might want to enable jffs2/cramfs support in u-boot. This will allow you to list and load jffs2/cramfs files into ram and view some file system information -- it's a good way to ensure you have a clean filesystem image _before_ you boot the kernel.  And, of course, double-check your kernel configuration to ensure you have cramfs support enabled ;-)  Regards, --Scott

[Altera_Forum]

--- Quote Start ---  originally posted by smcnutt@Jun 30 2006, 06:07 PM hi slsnios,  > kernel panic - not syncing: vfs: unable to mount root fs on unknown-block(31,0)  there are many possible causes.  first, make sure you don&#39;t have the broken cramfs code. see: http://forum.niosforum.com/forum/index.php...=2383&hl=cramfs (http://forum.niosforum.com/forum/index.php?showtopic=2383&hl=cramfs)  once you&#39;re sure your cramfs code is clean, you might want to enable jffs2/cramfs support in u-boot. this will allow you to list and load jffs2/cramfs files into ram and view some file system information -- it&#39;s a good way to ensure you have a clean filesystem image _before_ you boot the kernel.  and, of course, double-check your kernel configuration to ensure you have cramfs support enabled ;-)  regards, --scott <div align='right'><{post_snapback}> (index.php?act=findpost&pid=16571)  --- quote end ---    --- Quote End ---      hi scott  thans  but i have already changed cramfs code. i selected cramfs option. i checked image of cramfs which is genereted by mkcram command. now i got sam problem.. please help me,what should be my next step?

[Altera_Forum]

Hi slsnios, 

 Try adding the following to the kernel command line: rootfstype=cramfs  Regards, --Scott

[Altera_Forum]

--- Quote Start ---  originally posted by smcnutt@Jul 7 2006, 02:04 AM hi slsnios,  try adding the following to the kernel command line: rootfstype=cramfs[/b]  Regards, --Scott <div align='right'><{post_snapback}> (index.php?act=findpost&pid=16692)  --- Quote End ---  [/b]  --- Quote End ---    Thanks scott  but can you tell me where i have to insert tis line at source code or project folder ,..where is kernel command line..

[Altera_Forum]

--- Quote Start ---  originally posted by slsnios+jul 7 2006, 04:45 pm--><div class='quotetop'>quote (slsnios @ jul 7 2006, 04:45 pm)</div>  --- quote start ---  <!--quotebegin-smcnutt@Jul 7 2006, 02:04 AM hi slsnios,  try adding the following to the kernel command line: rootfstype=cramfs[/b]  Regards, --Scott <div align='right'><{post_snapback}> (index.php?act=findpost&pid=16692)  --- Quote End ---  [/b]  --- Quote End ---    Thanks scott  but can you tell me where i have to insert tis line at source code or project folder ,..where is kernel command line.. <div align='right'><{post_snapback}> (index.php?act=findpost&pid=16704)</div> [/b]  --- Quote End ---   In kernel menuconfig,  Processor type and features --> () Default kernel command string root=/dev/mtdblock0 ro rootfstype=cramfs

[Altera_Forum]

TO_BE_DONE

[Altera_Forum]

Hi slsnios, 

 > ./mkcramfs -n cramfs -z -r ./dir cramfs.img > then it is giving following error,  ... snip ... > cramfs.img: invalid cramfs--wrong magic  You&#39;re reversing the endian order (-r option) & cramfschk does not have similar option. Endian order reversal should not be necessary.  Regards, --Scott

[Altera_Forum]

hi scott 

 so,am i wrong or right? where am i doing mistake ?  with regard  slsnios

[Altera_Forum]

Hi slsnios, 

 > so,am i wrong or right?  If you&#39;re creating the cramfs image on a little endian machine (like a PC) don&#39;t use the -r option.  Regards, --Scott

[Altera_Forum]

hi scott 

 so much thanks.......infinite atleast ,now kernel is able to find which is fs is there. but still now i have problem now, i got massegs on terminal like  uClinux/Nios II  Altera Nios II support © 2004 Microtronix Datacom Ltd.  Built 1 zonelists  Kernel command line: root=/dev/mtdblock0 ro  PID hash table entries: 64 (order: 6, 1024 bytes)  Dentry cache hash table entries: 2048 (order: 1, 8192 bytes)  Inode-cache hash table entries: 1024 (order: 0, 4096 bytes)  Memory available: 7040k/8192k RAM, 0k/0k ROM (800k kernel code, 235k data)  Mount-cache hash table entries: 512 (order: 0, 4096 bytes)  Linux NoNET1.0 for Linux 2.6  Serial: JTAG UART driver $Revision: 1.4 $  ttyJ0 at MMIO 0x80221080 (irq = 1) is a jtag_uart  io scheduler noop registered  io scheduler anticipatory registered  io scheduler deadline registered  io scheduler cfq registered  RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize  UP3 map: Found 1 x16 devices at 0x0 in 16-bit bank   Amd/Fujitsu Extended Query Table at 0x0040  number of CFI chips: 1  cfi_cmdset_0002: Disabling erase-suspend-program due to code brokenness.  cmdlinepart partition parsing not available  RedBoot partition parsing not available  Using altera development partition definition  Creating 2 MTD partitions on "altera map":  0x00100000-0x00200000 : "romfs"  0x00000000-0x00100000 : "loader/kernel"  VFS: Mounted root (cramfs filesystem) readonly.  Freeing unused kernel memory: 48k freed (0x8e4000 - 0x8ef000)  Warning: unable to open an initial console.  Kernel panic - not syncing: No init found. Try passing init= option to kernel.     if i think init is not there ,then it should be not worked when same fs is used as romfs.bin because i got kernel o/p ,when i used same fs without compress as romfs.  please help me.

[Altera_Forum]

Hi slsnios, 

 > atleast ,now kernel is able to find which is fs is there.  Great!  > should be not worked when same fs is used as romfs.bin  You should forget about romfs.bin and just populate the cramfs with the necessary files -- and edit the init scripts to suit your own needs. Here&#39;s what I typically use:   d 0700 176 500:245 root d 0700 1700 500:245 root/bin f 0755 54448 500:245 root/bin/agetty f 0755 77640 500:245 root/bin/arp f 0755 61804 500:245 root/bin/badblocks f 0755 1712 500:245 root/bin/basename f 0755 122012 500:245 root/bin/boa f 0755 6348 500:245 root/bin/cat f 0755 34476 500:245 root/bin/chattr f 0755 30976 500:245 root/bin/chgrp f 0755 22936 500:245 root/bin/chmod f 0755 31200 500:245 root/bin/chown f 0755 24464 500:245 root/bin/cmp f 0755 26432 500:245 root/bin/cp f 0755 12612 500:245 root/bin/date f 0755 27156 500:245 root/bin/dd f 0755 24940 500:245 root/bin/debug f 0755 25500 500:245 root/bin/df f 0755 92968 500:245 root/bin/dhcpcd f 0755 1536 500:245 root/bin/dirname f 0755 1340 500:245 root/bin/echo f 0755 111752 500:245 root/bin/ex1 f 0755 111968 500:245 root/bin/ex2 f 0755 113920 500:245 root/bin/ex3 f 0755 112092 500:245 root/bin/ex4 f 0755 111820 500:245 root/bin/ex5 f 0755 111828 500:245 root/bin/ex6 f 0755 112356 500:245 root/bin/ex7 f 0755 1008 500:245 root/bin/false f 0755 58996 500:245 root/bin/fbset f 0755 113208 500:245 root/bin/fdisk f 0755 27888 500:245 root/bin/free f 0755 58340 500:245 root/bin/fsck f 0755 107260 500:245 root/bin/ftpd f 0755 30840 500:245 root/bin/grep f 0755 5820 500:245 root/bin/hostname f 0755 25940 500:245 root/bin/ifattach f 0755 78852 500:245 root/bin/ifconfig f 0755 38292 500:245 root/bin/inetd f 0755 23904 500:245 root/bin/kill f 0755 29780 500:245 root/bin/l f 0755 24224 500:245 root/bin/ln f 0755 27588 500:245 root/bin/login f 0755 13304 500:245 root/bin/logname f 0755 42648 500:245 root/bin/ls f 0755 35972 500:245 root/bin/lsattr f 0755 2108 500:245 root/bin/mkdir f 0755 1728 500:245 root/bin/mkfifo f 0755 3820 500:245 root/bin/mknod f 0755 26860 500:245 root/bin/more f 0755 153200 500:245 root/bin/mount f 0755 26968 500:245 root/bin/mv f 0755 24216 500:245 root/bin/pause f 0755 63200 500:245 root/bin/ping f 0755 1536 500:245 root/bin/printenv f 0755 36728 500:245 root/bin/ps f 0755 4304 500:245 root/bin/pwd f 0755 25580 500:245 root/bin/reboot f 0755 2164 500:245 root/bin/rm f 0755 2036 500:245 root/bin/rmdir f 0755 81440 500:245 root/bin/route f 0755 88108 500:245 root/bin/sash f 0755 54596 500:245 root/bin/sh f 0755 21436 500:245 root/bin/shutdown f 0755 23096 500:245 root/bin/sigpending f 0755 24904 500:245 root/bin/sigsuspend f 0755 57332 500:245 root/bin/stty f 0755 1096 500:245 root/bin/sync f 0755 150584 500:245 root/bin/syscalltest f 0755 51976 500:245 root/bin/telnetd f 0755 2120 500:245 root/bin/touch f 0755 58120 500:245 root/bin/traceroute f 0755 1008 500:245 root/bin/true f 0755 107144 500:245 root/bin/umount f 0755 1892 500:245 root/bin/uname f 0755 28256 500:245 root/bin/uuidgen f 0755 5208 500:245 root/bin/wait f 0755 20392 500:245 root/bin/which f 0755 13304 500:245 root/bin/whoami f 0755 1356 500:245 root/bin/yes d 0700 800 500:245 root/dev c 0644 5, 1 0:0 root/dev/console c 0644 5, 64 0:0 root/dev/cua0 c 0644 1, 2 0:0 root/dev/kmem c 0644 1, 1 0:0 root/dev/mem b 0644 31, 2 0:0 root/dev/mtdblock2 c 0644 1, 3 0:0 root/dev/null c 0644 2, 0 0:0 root/dev/ptyp0 c 0644 2, 1 0:0 root/dev/ptyp1 c 0644 2, 2 0:0 root/dev/ptyp2 c 0644 2, 3 0:0 root/dev/ptyp3 c 0644 2, 4 0:0 root/dev/ptyp4 c 0644 2, 5 0:0 root/dev/ptyp5 c 0644 2, 6 0:0 root/dev/ptyp6 c 0644 2, 7 0:0 root/dev/ptyp7 c 0644 2, 8 0:0 root/dev/ptyp8 c 0644 2, 9 0:0 root/dev/ptyp9 c 0644 2, 10 0:0 root/dev/ptypa c 0644 2, 11 0:0 root/dev/ptypb c 0644 2, 12 0:0 root/dev/ptypc c 0644 2, 13 0:0 root/dev/ptypd c 0644 2, 14 0:0 root/dev/ptype c 0644 2, 15 0:0 root/dev/ptypf c 0644 4, 0 0:0 root/dev/tty0 c 0644 4, 64 0:0 root/dev/ttyS0 c 0644 3, 0 0:0 root/dev/ttyp0 c 0644 3, 1 0:0 root/dev/ttyp1 c 0644 3, 2 0:0 root/dev/ttyp2 c 0644 3, 3 0:0 root/dev/ttyp3 c 0644 3, 4 0:0 root/dev/ttyp4 c 0644 3, 5 0:0 root/dev/ttyp5 c 0644 3, 6 0:0 root/dev/ttyp6 c 0644 3, 7 0:0 root/dev/ttyp7 c 0644 3, 8 0:0 root/dev/ttyp8 c 0644 3, 9 0:0 root/dev/ttyp9 c 0644 3, 10 0:0 root/dev/ttypa c 0644 3, 11 0:0 root/dev/ttypb c 0644 3, 12 0:0 root/dev/ttypc c 0644 3, 13 0:0 root/dev/ttypd c 0644 3, 14 0:0 root/dev/ttype c 0644 3, 15 0:0 root/dev/ttypf c 0644 1, 5 0:0 root/dev/zero d 0700 268 500:245 root/etc d 0775 20 500:245 root/etc/config f 0664 8146 500:245 root/etc/config/boa.conf f 0700 547 500:245 root/etc/group f 0664 168 500:245 root/etc/inetd.conf f 0664 185 500:245 root/etc/inittab f 0664 47 500:245 root/etc/issue f 0700 1552 500:245 root/etc/mime.types f 0700 308 500:245 root/etc/passwd f 0664 1193 500:245 root/etc/protocols f 0664 231 500:245 root/etc/rc f 0664 113 500:245 root/etc/services f 0700 549 500:245 root/etc/shadow f 0700 8 500:245 root/etc/shells f 0700 12 500:245 root/etc/version d 0755 36 500:245 root/home d 0700 0 500:245 root/mnt d 0700 0 500:245 root/proc d 0700 36 500:245 root/sbin f 0775 49316 500:245 root/sbin/init f 0755 19396 500:245 root/sbin/testapp d 0700 0 500:245 root/sys d 0700 0 500:245 root/tmp d 0700 0 500:245 root/usr d 0700 0 500:245 root/var  Regards, --Scott

[Altera_Forum]

hi scott 

 here, romfs.bin ..., i used nios IDE 5.0 and linux filesystem for generating rootfs folder. i gave /<filesydstem project path >/target to mkcramfs for cramfs image.  but i can&#39;t get you. wher i have to writ and run int script.please tell me detail..please..............