Hello,
I have been going through the LinuxPPC archives, looking for answers to my
problem, but still could not proceed ahead. My problem is that the Linux
will hang after the line 'execve("bin/sh", argv_init, envp_init);' inside
the init function of the file main.c. I have added the printk statements
preceding each of the execve calls. The last prink should be right before
the panic statement but it did not get executed, therefore I suspect that
the culprit is 'execve("bin/sh", argv_init, envp_init);' .
My hardware is a custom 860T cpu with 16M RAM running at 50Mhz. I have
ported PPCboot 1.2.0 on the hardware. The linux I am trying to load is the
TMQ860L from DENX's development package. The Ramdisk image I am using is
also from DENX's ftp site. From that site there are two samples of Ramdisk,
one is "simple_ramdisk", the other is "ramdisk_2048". I have tried both and
got the same result. I am sure that I must have missed something, but I do
not know what I have overlooked. Could some body please help me out on this.
Thanks.
By the way, I can see a lot of people posting questions and receiving a lot
of answers or suggestions. But I seldom see the originator of the questions
follows up with the final solution of how the problem got fixed. In this
example, I do see that I am not the first one to ask this question, but I
just cannot find the solutions from the archives.Francis Captured from the screen: Hit any key to stop autoboot: 0 => setenv bootargs root=/dev/ram => imi 400000 600000 ## Checking Image at 00400000 ... Image Name: Linux-2.4.4 Debug Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 605902 Bytes = 591.7 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ## Checking Image at 00600000 ... Image Name: 2048K RAMdisk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size: 506801 Bytes = 494.9 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK => bootm 400000 600000 ## Booting image at 00400000 ... Image Name: Linux-2.4.4 Debug Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 605902 Bytes = 591.7 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK ## Current stack ends at 0x00F9BC18 => set upper limit to 0x00800000 ## cmdline at 0x007FFF00 ... 0x007FFF0D bd address = 0x00F9BFC4 memstart = 0x00000000 memsize = 0x01000000 flashstart = 0xFFE00000 flashsize = 0x00200000 flashoffset = 0x00000000 sramstart = 0x00000000 sramsize = 0x00000000 immr_base = 0xFA000000 bootflags = 0x00000001 intfreq = 50 MHz busfreq = 50 MHz ethaddr = 00:10:EC:00:1D:0B IP addr = 192.168.1.65 baudrate = 9600 bps ## Loading RAMDisk Image at 00600000 ... Image Name: 2048K RAMdisk Image Type: PowerPC Linux RAMDisk Image (gzip compressed) Data Size: 506801 Bytes = 494.9 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK ## initrd at 0x00600040 ... 0x0067BBF0 (len=506801=0x7BBB1) Loading Ramdisk to 00f1f000, end 00f9abb1 ... OK ## Transferring control to Linux (at address 00000000) ... Linux version 2.4.4 (root at localhost.localdomain) (gcc version 2.95.3 20010315 (r elease/MontaVista)) #15 Tue Nov 26 10:13:20 PST 2002 On node 0 totalpages: 4096 zone(0): 4096 pages. zone(1): 0 pages. zone(2): 0 pages. Kernel command line: root=/dev/ram Decrementer Frequency: 3125000 Calibrating delay loop... 49.76 BogoMIPS Memory: 13848k available (1168k kernel code, 508k data, 52k init, 0k highmem) Dentry-cache hash table entries: 2048 (order: 2, 16384 bytes) Buffer-cache hash table entries: 1024 (order: 0, 4096 bytes) Page-cache hash table entries: 4096 (order: 2, 16384 bytes) Inode-cache hash table entries: 1024 (order: 1, 8192 bytes) POSIX conformance testing by UNIFIX Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Starting kswapd v1.8 CPM UART driver version 0.03 ttyS0 on SMC1 at 0x0280, BRG1 ttyS1 on SMC2 at 0x0380, BRG2 pty: 256 Unix98 ptys configured block: queued sectors max/low 9120kB/3040kB, 64 slots per queue RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize Uniform Multi-Platform E-IDE driver Revision: 6.31 ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx PCMCIA slot @: phys mem ffffffff...00000000 (size 00000001) PCMCIA slot has not been defined! Using A as default No card in slot A: PIPR=ff00ff00 eth0: CPM ENET Version 0.2 on SCC1, 00:10:ec:00:1d:0b RAMDISK: Compressed image found at block 0 Freeing initrd memory: 494k freed JFFS version 1.0, (C) 1999, 2000 Axis Communications AB JFFS2 version 2.1. (C) 2001 Red Hat, Inc., designed by Axis Communications AB. CFI: Found no TQM8xxL Bank 0 device at location zero CFI: Found no TQM8xxL Bank 1 device at location zero CFI: Found no TQM8xxL Bank 2 device at location zero CFI: Found no TQM8xxL Bank 3 device at location zero TQM8xxL: No support flash chips found! NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 1024 bind 1024) IP-Config: Incomplete network configuration information. NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. VFS: Mounted root (ext2 filesystem). Freeing unused kernel memory: 52k init Executing command:<NULL> ; printk statements added by me. /sbini/init /etc/init /bin/init /bin/sh ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
