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Last Post 08 Apr 2009 12:22 AM by raph

Kernel hangup

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mikhail

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20 Nov 2008 05:08 AM
I used the kernel from: https://omapzoom.org/gf/project/omapkernel/frs/?action=FrsReleaseView&release_id=138 And the prebuilt root filesystem from: https://omapzoom.org/gf/project/minifs/frs/ I have used the 'omap_3430ldp_defconfig' configuration from the kernel package: make CROSS_COMPILE=arm-none-linux-gnueabi- distclean make CROSS_COMPILE=arm-none-linux-gnueabi- omap_3430ldp_defconfig make CROSS_COMPILE=arm-none-linux-gnueabi- uImage Everything goes smooth here. However, the kernel hangs up in 10 secons after booting. It stops responding to ICMP as well. Just nothing, completely silent, without any messages. My device is: LDP3430-VG1.0.0 Has anybody tried fresher kernels on the device? I am not even sure that the 'omap_3430ldp_defconfig' is correct for this device. Following is the boot procedure log OMAP34XX LAB # printenv bootdelay=3 baudrate=115200 ipaddr=192.168.1.100 serverip=192.168.1.44 netmask=255.255.255.0 bootfile=3430 bootargs=console=ttyS2,115200n8 noinitrd mem=64M root=/dev/nfs rw nfsroot=192.168.1.44:/mnt/storage/omap_3430/rootfs,nolock,wsize=1024,rsize=1024 ip=dhcp stdin=serial stdout=serial stderr=serial ethaddr=00:08:EE:02:50:DF Environment size: 328/131068 bytes OMAP34XX LAB # tftpboot LAN9x18 (0x92110000) detected. Read mac address: 00:08:EE:02:50:DF start Auto negotiation... (take ~2sec) Auto negotiation complete, 100BaseTX, full duplex TFTP from server 192.168.1.44; our IP address is 192.168.1.100 Filename '3430'. Load address: 0x80000000 Loading: ################################################################# ################################################################# ################################################################# ################################################################# ################################################################# #################################################### done Bytes transferred = 1926748 (1d665c hex) OMAP34XX LAB #bootm ... Starting System Init for OMAP3430LAB Release: 0.1 ****************************************** Saving kernel ring buffer : OK Mounting devpts : OK Setting up networking Configuring lo : OK Configuring eth0 : OK - 192.168.1.100 Starting telnetd : OK Starting syslogd : OK Starting klogd : OK Mounting filesystems : OK Please press Enter to activate this console. BusyBox v1.6.1 (2008-07-17 12:54:29 CDT) Built-in shell (ash) Enter 'help' for a list of built-in commands. #

raph

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Posts:

08 Apr 2009 12:22 AM
I had a similar problem involving inactivity making the board shut down. I logged in on the serial port (/dev/ttyS2) and found that if I didn't keep sending text (ie typing, running commands,..) down the serial line it would hang up. I'm not sure what was causing this problem but I found a dirty fix and moved on. By immediately running the following command this problem wouldn't occur. This starts a process in the background that sends a dot-char every 2 secs and then sends a backspace to delete this char (ie this creates pointless tty traffic). You will get strange display behavior as the script sends and then deletes '.'s but at least the system works. ======== script ======= while (true) ; do echo '' \| awk '{printf \".\b\" }' ; sleep 2 ; done" & ==================== If found I required this to happen on the serial port even if I was using telnet.

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