From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <404F26A5.7070807@catapult.com> Date: Wed, 10 Mar 2004 09:31:01 -0500 From: "Kevin A. Sapp" MIME-Version: 1.0 To: linuxppc-embedded@lists.linuxppc.org, Kevin Sapp Subject: RAM Disk problems References: <20040309151442.1E311C0655@atlas.denx.de> In-Reply-To: <20040309151442.1E311C0655@atlas.denx.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Sender: owner-linuxppc-embedded@lists.linuxppc.org List-Id: Hello, I am trying to bring up a RAM disk as the root file system. Most everything is working until it come's time to mount it. The logs are below. I noticed in mount_block_root the get_fs_names appears to returning a zero length string. I have tried root=/dev/ram root=/dev/ram0 root=/dev/rd/0 and combinatins with noinitrd. FYI. The RAM disk will be loaded by a bus master and will have to be persistant. Any suggestions? Thanks Kevin => bootm 100000 200000 ## Booting image at 00100000 ... Image Name: Linux-2.4.20 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 485362 Bytes = 473.10 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Loading RAMDisk Image at 00200000 ... Image Name: Kevin Simple RAMDisk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size: 1405884 Bytes = 1.3 MB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ## initrd at 0x00200040 ... 0x003573FB (len=1405884=0x1573BC) Loading Ramdisk to 01c27000, end 01d7e3bc ... OK kernel addr:00000000 machine_init<6>Memory BAT mapping: BAT2=16Mb, BAT3=8Mb, residual: 7Mb Linux version 2.4.20 (kevin@linux4) (gcc version 3.2.1) #258 Wed Mar 10 07:55:32 EST 2004 setup arch<4>ADS setup arch On node 0 totalpages: 7936 zone(0): 7936 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: root=/dev/ram rw console=ttyS0,9600 nobats ip=192.168.82.5 console passed ttyS0:0 Checking for registered console ttyS Prefered console -1 ADS init IRQ. NR_IRQS=256 ADS time init ADS calibrate decrementer. FREQ=66666666, tb_ticks_per_jiffy=166666 stdio console init serial_console_setup cons:c00ebc48 str:9600 cons->index:0 Calibrating delay loop... 132.71 BogoMIPS Memory: 28828k available (828k kernel code, 288k data, 48k init, 0k highmem) Dentry cache hash table entries: 4096 (order: 3, 32768 bytes) Inode cache hash table entries: 2048 (order: 2, 16384 bytes) Mount-cache hash table entries: 512 (order: 0, 4096 bytes) Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes) Page-cache hash table entries: 8192 (order: 3, 32768 bytes) POSIX conformance testing by UNIFIX ADS init Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket Starting kswapd devfs: v1.12c (20020818) Richard Gooch (rgooch@atnf.csiro.au) devfs: devfs_debug: 0x0 devfs: boot_options: 0x1 pty: 256 Unix98 ptys configured RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize loop: loaded (max 8 devices) *********************SERIAL INIT************* MPC8260 FCC Ethernet driver BD rings initialised, RBASE=1B8160, TBASE=1B8360 Created eth0 NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 2048 bind 4096) eth0: OPEN IP-Config: Guessing netmask 255.255.255.0 IP-Config: Complete: device=eth0, addr=192.168.82.5, mask=255.255.255.0, gw=255.255.255.255, host=192.168.82.5, domain=, nis-domain=(none), bootserver=255.255.255.255, rootserver=255.255.255.255, rootpath= NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. RAMDISK: Compressed image found at block 0 Freeing initrd memory: 1372k freed Kernel panic: VFS: Unable to mount root fs on 01:00 <0>Rebooting in 180 seconds.. ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/