From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail9.dslextreme.com (mail9.dslextreme.com [66.51.199.94]) by ozlabs.org (Postfix) with SMTP id 1224FDDED2 for ; Wed, 17 Jan 2007 16:08:48 +1100 (EST) Message-ID: <200701162102050578.1213ACC0@smtp.dslextreme.com> Date: Tue, 16 Jan 2007 21:02:05 -0800 From: "Dan Wilson" To: linuxppc-embedded@ozlabs.org Subject: ram-disk root file system Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , We are attempting to use an initrd ram-disk as the permanent root file= system for a MPC8541-based system. We are using ELDK 4 to cross-compile, and are running linux 2.6.15 kernel,= with u-boot 1.1.6 as our bootloader. I built an initrd file system, compressed it, then ran mkimage against it,= and it seems to be successfully loaded by u-boot, and linux sees the= initrd file and claims to have mounted it. However, it then reports that= it is unable to find any files on the mounted root file system, as shown= in the log below. I added some additional diagnostics to show what the= error codes were, and what was happening, but do not understand what I= might have done wrong. If I boot linux from an NFS system or from compact= flash, I am able to mount the image and see all the files, so I believe= the initrd file system was created correctly. Here's the trace. Any help or pointers that anyone can give will be= greatly appreciated! Thanks, Dan. Speed: 100, half duplex Using TSEC0 device TFTP from server 10.0.80.16; our IP address is 10.0.55.91 Filename 'dw_eldk'. Load address: 0x4000000 Loading: ################################################################# ################################################################# ################################################################# ############################### done Bytes transferred =3D 1154111 (119c3f hex) Speed: 100, half duplex Using TSEC0 device TFTP from server 10.0.80.16; our IP address is 10.0.55.91 Filename 'fm2224ep_initrd.uboot'. Load address: 0x4200000 Loading: ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# #################################### done Bytes transferred =3D 5840574 (591ebe hex) ## Booting image at 04000000 ... Image Name: Linux-2.6.15 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 1154047 Bytes =3D 1.1 MB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Loading RAMDisk Image at 04200000 ... Image Name: FM2224EP Ramdisk Image Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size: 5840510 Bytes =3D 5.6 MB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Loading Ramdisk to 1f92c000, end 1febde7e ... OK Memory CAM mapping: CAM0=3D256Mb, CAM1=3D256Mb, CAM2=3D0Mb residual: 0Mb Linux version 2.6.15 (dwilson@washington) (gcc version 4.0.0 (DENX ELDK 4.0 4.0.0)) #6 Tue Jan 16 15:00:18 PST 2007 fm2224ep_setup_arch CDS Version =3D f0 in PCI slot 1 Built 1 zonelists Kernel command line: root=3D/dev/ram ip=3D10.0.55.91:10.0.80.21:10.0.0.254:255.255.0.0:FM2224EP_67:eth0 console=3DttyS0,9600 nfsroot=3D10.0.80.21:/vol/local/common/kirkwood/hosts/eldk-test,v3,tcp rw init=3D/bin/ash OpenPIC Version 1.2 (1 CPUs and 60 IRQ sources) at fcfb8000 PID hash table entries: 4096 (order: 12, 65536 bytes) Warning: real time clock seems stuck! Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Memory: 510976k available (1880k kernel code, 512k data, 136k init, 0k highmem) Mount-cache hash table entries: 512 populate_roots calling unpack_to_roots: start =3D c0257000, end=3Dc0257085,= len=3D85 checking if image is initramfs...<3>image check, start=3Ddf92c000, end=3Ddfebde7e, err=3Dc01dae84 it isn't (no cpio magic); looks like an initrd wasn't initramfs (no cpio magic), opening /initrd.image, fd=3D0 Freeing initrd memory: 5703k freed NET: Registered protocol family 16 PCI: Probing PCI hardware Generic PHY: Registered new driver JFFS2 version 2.2. (NAND) (C) 2001-2003 Red Hat, Inc. io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered Generic RTC Driver v1.07 Serial: 8250/16550 driver $Revision: #1 $ 4 ports, IRQ sharing disabled serial8250.0: ttyS0 at MMIO 0xe0004500 (irq =3D 90) is a 16550A serial8250.0: ttyS1 at MMIO 0xe0004600 (irq =3D 90) is a 16550A RAMDISK driver initialized: 16 RAM disks of 32768K size 1024 blocksize loop: loaded (max 8 devices) Gianfar MII Bus: probed eth0: Gianfar Ethernet Controller Version 1.2, 00:15:ed:00:09:41 eth0: Running with NAPI enabled eth0: 256/256 RX/TX BD ring size eth1: Gianfar Ethernet Controller Version 1.2, 07:de:29:00:07:de eth1: Running with NAPI enabled eth1: 256/256 RX/TX BD ring size Marvell 88E1101: Registered new driver Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 50MHz system bus speed for PIO modes; override with= idebus=3Dxx IDE phys mem : f0000000...f001ffff (size 0001ffff) IDE virt base: 0xe1080000 CSR virt base: 0xe1100000 vector: 0x80c40072 port: 0xe1080002 =3D> 0x00 port: 0xe1080007 =3D> 0x00 port: 0xe108000b =3D> 0x00 port: 0xe108000f =3D> 0x00 port: 0xe1080013 =3D> 0x00 port: 0xe1080017 =3D> 0x00 port: 0xe108001b =3D> 0xE0 port: 0xe108001f =3D> 0x50 port: 0xe109001b =3D> 0x50 port: 0xe1080000 =3D> 0xF0 hda: SanDisk SDCFB-1024, CFA DISK drive ide0 at 0xe1080002-0xe1080009,0xe109001b on irq 114 hda: max request size: 128KiB hda: 2001888 sectors (1024 MB) w/1KiB Cache, CHS=3D1986/16/63 hda: cache flushes not supported hda: unknown partition table i2c /dev entries driver NET: Registered protocol family 2 IP route cache hash table entries: 32768 (order: 5, 131072 bytes) TCP established hash table entries: 131072 (order: 7, 524288 bytes) TCP bind hash table entries: 65536 (order: 6, 262144 bytes) TCP: Hash tables configured (established 131072 bind 65536) TCP reno registered TCP bic registered NET: Registered protocol family 1 NET: Registered protocol family 17 IP-Config: Complete: device=3Deth0, addr=3D10.0.55.91, mask=3D255.255.0.0,= gw=3D10.0.0.254, host=3DFM2224EP_67, domain=3D, nis-domain=3D(none), bootserver=3D10.0.80.21, rootserver=3D10.0.80.21, rootpath=3D init: ramdisk_execute_command =3D /init loading ramdisk image initrd.image RAMDISK: Compressed image found at block 0 EXT2-fs warning: checktime reached, running e2fsck is recommended VFS: Mounted root (ext2 filesystem). Freeing unused kernel memory: 136k init run_init_process trying to exec /bin/ash back from execve, errno=3D2 Failed to execute /bin/ash. Attempting defaults... run_init_process trying to exec /sbin/init back from execve, errno=3D14 run_init_process trying to exec /etc/init back from execve, errno=3D14 run_init_process trying to exec /bin/init back from execve, errno=3D14 run_init_process trying to exec /bin/sh back from execve, errno=3D14 Kernel panic - not syncing: No init found. Try passing init=3D option to kernel. <0>Rebooting in 180 seconds..<6>phy0:0: Link is Up - 100/Half