A Ha. That's the question I've asked kumar earlier today. Having inserted that myself it worked also. Still wondering why tho...
On 8/3/05, JohnsonCheng <johnsoncheng at qnap.com.tw> wrote: > Actually, I had reviews all article about "serial console", just know I have > to use LEVEL for interrupt, not EDGE. Unfortunately the default interrupt > setting for kernel is with LEVEL, IRQ_SENSE_LEVEL, I think I don't need to > modify it. > But I found I add ASYNC_SKIP_TEST flag to UART in sandpoint.h can fix my > problem. > > Thanks, > Johnson Cheng > > -----Original Message----- > From: linuxppc-embedded-bounces at ozlabs.org > [mailto:linuxppc-embedded-bounces at ozlabs.org] On Behalf Of Daniel Ann > Sent: Wednesday, August 03, 2005 8:22 AM > To: JohnsonCheng > Cc: linuxppc-embedded at ozlabs.org > Subject: Re: A PPC kernel issue with UART ?? > > Johnson, > > You know what? I've had the exact same problem only day or two ago. I > think the mail subject was "serial console" or something similar. Have > a read at it. > > BTW, My problem was with interrupt setting. > Daniel. > > On 8/2/05, JohnsonCheng <johnsoncheng at qnap.com.tw> wrote: > > > > > > Dear All, > > > > > > > > I meet a wired UART problem on linux-2.6 with MPC8241 chip. > > > > > > > > My Environment is as following: > > > > CPU: MPC8241 > > > > Linux: 2.6.12.3 > > > > COM1 offset: 0x4500, COM2 offset: 0x4600 > > > > > > > > When I booting my rootfs, it hangs at following message: > > > > RAMDISK: Compressed image found at block 0 > > > > VFS: Mounted root (ext2 filesystem) readonly. > > > > Freeing unused kernel memory: 104k init > > > > EXT2-fs warning: checktime reached, running e2fsck is recommended > > > > > > > > I had add printk in tty_write() of drivers/char/tty_io.c, the message from > > rootfs have printed. > > > > The conclusion is that message can be printed by printk() in linux kernel, > > but can't be printed by printf() in user mode. I think it must be > something > > wrong for my UART configurations, does anybody know it?? > > > > > > > > > > > > Best Regards, > > > > Johnson Cheng > > _______________________________________________ > > Linuxppc-embedded mailing list > > Linuxppc-embedded at ozlabs.org > > https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > > > > > > -- > Daniel > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded at ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > -- Daniel