Flavio, What do your file permissions look like on /dev/ttyS0? Do you have read and write access enabled?
Pete P.S. I am also using the linux 2.4.18 kernel on the MPC8260ADS board, so I might be able to help on further issues... --- Flavio Pereira <fpereira at azisa.com> wrote: > > Hi Wolfgang > > Firstly let me say thanks for your response. > > >Did you fix the IMMR mapping in PPCBoot? The CFG_DEFAULT_IMMR defi- > >nition will NOT work with LInux; see the Linux memory map require- > >ments - You _must_ map the IMMR at 0xF0000000 or above. > > Yes I have fixed to IMMR mappings in PPCBoot to correspond to 0xF0000000 > > > Are you sure this was done well? > > Well _no_ I'm not sure this was done well but I can tell you exactly > what I have done. For uart.c I've completely removed SMC1 and SMC2 from > serial_state rs_table and rs_brg_map[]. If I don't remove this my serial > port does not come up at all initially. For tty_io.c I simply to do not > call rs_8xx_init because it kills my serial port, i.e. if I let it this > code execute there is no more output on my serial terminal. > > > Did you run the ELDK_MAKEDEV and ELDK_FIXPERM scripts as documented? > I've run ELDK_MAKEDEV, so the dev/console file does exist and I've also > run ELDK_FIXOWNER. I'm guessing that FIXOWNER = FIXPERM. > > Also in my var\log\messages I get the following...so init is trying to > execute: > > Dec 31 19:00:13 192 kernel: Warning: unable to open an initial console. > Dec 31 19:00:13 192 /sbin/mingetty[133]: /dev/ttyS0: Operation not > permitted > Dec 31 19:00:06 192 rc.sysinit: Mounting proc filesystem: succeeded > Dec 31 19:00:06 192 sysctl: net.ipv4.ip_forward = 0 > Dec 31 19:00:06 192 sysctl: net.ipv4.conf.all.rp_filter = 1 > Dec 31 19:00:07 192 sysctl: error: 'net.ipv4.ip_always_defrag' is an > unknown key > Dec 31 19:00:07 192 sysctl: error: 'kernel.sysrq' is an unknown key > Dec 31 19:00:07 192 rc.sysinit: Configuring kernel parameters: > succeeded > Dec 31 19:00:07 192 date: Wed Dec 31 19:00:06 EST 1969 > Dec 31 19:00:07 192 rc.sysinit: Setting clock : Wed Dec 31 19:00:06 EST > 1969 succeeded > Dec 31 19:00:07 192 swapon: swapon: cannot open /etc/fstab: No such file > or directory > Dec 31 19:00:07 192 rc.sysinit: Activating swap partitions: failed > Dec 31 19:00:07 192 rc.sysinit: Setting hostname 192.168.1.246: > succeeded > Dec 31 19:00:10 192 rc.sysinit: Checking filesystems succeeded > Dec 31 19:00:10 192 fsck: Checking all file systems. > Dec 31 19:00:10 192 rc.sysinit: Mounting local filesystems: failed > Dec 31 19:00:10 192 fsck: WARNING: couldn't open /etc/fstab: No such > file or directory > Dec 31 19:00:10 192 mount: can't create lock file /etc/mtab~62: > Permission denied (use -n flag to override) > Dec 31 19:00:11 192 rc.sysinit: Enabling swap space: succeeded > Dec 31 19:00:11 192 init: can't open(/etc/ioctl.save, O_WRONLY): > Permission denied > Dec 31 19:00:13 192 /sbin/mingetty[134]: /dev/ttyS0: Operation not > permitted > Dec 31 19:00:11 192 init: Entering runlevel: 3 > Dec 31 19:00:14 192 /sbin/mingetty[135]: /dev/ttyS0: Operation not > permitted > Dec 31 19:00:14 192 /sbin/mingetty[136]: /dev/ttyS0: Operation not > permitted > Dec 31 19:00:14 192 /sbin/mingetty[137]: /dev/ttyS0: Operation not > permitted > Dec 31 19:00:14 192 /sbin/mingetty[138]: /dev/ttyS0: Operation not > permitted > Dec 31 19:00:14 192 /sbin/mingetty[139]: /dev/ttyS0: Operation not > permitted > Dec 31 19:00:14 192 /sbin/mingetty[140]: /dev/ttyS0: Operation not > permitted > > Regards, > Flavio > > -----Original Message----- > From: Wolfgang Denk [mailto:wd at denx.de] > Sent: Wednesday, September 04, 2002 3:41 PM > To: Flavio Pereira > Cc: linuxppc-embedded at lists.linuxppc.org > Subject: Re: Linux on 8260 using ELDK..Help?!? > > Dear flavio, > > in message <1E354700654661418593A0D6B5A9D41008943B at mail.azisa.co.za> you > wrote: > > > > I'm a _newbie_ to Linux and am busy porting Linux to a MPC8260ADS > > board. PPCBoot is working fine and the Linux kernel seems to boot up > > okay up and till the point where it begins to load init, it then > > crashes. The trace is shown below. I've also tried forcing sh and > > Did you fix the IMMR mapping in PPCBoot? The CFG_DEFAULT_IMMR defi- > nition will NOT work with LInux; see the Linux memory map require- > ments - You _must_ map the IMMR at 0xF0000000 or above. > > > bash as the start-up but these also fail with similar errors. I'm > > using the binaries provided by the ELDK development package. Also my > > changes to the base kernel code (2.4.4) are minimal and are limited > > to uart.c (force SCC1 as serial port) and tty_io.c (don't call > > rs_8xx_init). Can anyone please point me in the right direction...? > > Are you sure this was done well? > > > If the information above is not sufficient please let me know what > > more I could provide. Something tries to restart the system and then > > it crashes on trying to reboot. Someone please tell me what I should > > be looking at? > > ... > > Freeing unused kernel memory: 52k init > > Looks good so far. > > > Warning: unable to open an initial console. > > Did you run the ELDK_MAKEDEV and ELDK_FIXPERM scripts as documented? > > Wolfgang Denk > > -- > Software Engineering: Embedded and Realtime Systems, Embedded Linux > Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de > In C we had to code our own bugs, in C++ we can inherit them. > > Yahoo! Finance - Get real-time stock quotes http://finance.yahoo.com ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
