* Re: Help in setting up serial console on 64 bit machine [not found] <53CF1076699CD711B7DD0002A51363F102C36031@exw-ks.ks.lsil.com> @ 2004-03-08 21:28 ` David Mosberger 2004-03-09 15:04 ` Dachepalli, Sudhir 0 siblings, 1 reply; 3+ messages in thread From: David Mosberger @ 2004-03-08 21:28 UTC (permalink / raw) To: Dachepalli, Sudhir; +Cc: 'Linux-Kernel (E-mail)', linux-ia64 Sudhir, First a general comment: for ia64-specific questions, it's generally better to ask on linux-ia64@vger.kernel.org. As for your particular issue: the serial console normally is ttyS0, not ttyS1, so that might be the reason you're not seeing any output. Also, 9600 baud is rather slow. If the client-side can handle it, 115200 baud will be much nicer. --david >>>>> On Mon, 8 Mar 2004 15:04:04 -0600 , "Dachepalli, Sudhir" <sudhir.dachepalli@lsil.com> said: Sudhir> Hello SerialConsole user, Sudhir> I have a problem while setting up serial console to Sudhir> direct kernel printk messages to serial console. I dont see Sudhir> messages getting displayed. Sudhir> My setup --------- 1. IA 64 machine. 2. Redhat AS 3.0 Sudhir> 3. Kernel 2.4.18-e.37smp 4. Server Hardware : HP rx5670 Sudhir> Serial Console setup -------------------- 1. I have Sudhir> connected serial cable between two linux terminals. 2. open Sudhir> minicom on both servers. 3. changed the settings to Sudhir> 9600-8-n-1, no h/w flow control, no s/w flow control, stop Sudhir> bits =1. 4. I typed some charecters on server 1 and saw the Sudhir> charecters appear in server 2's minicom. 5. I typed some Sudhir> charecters on server 2 and saw the charecters appear in Sudhir> server 1's minicom. 6. I have changed the kernel command Sudhir> line for booting the kernel . PLEASE SEE BELOW FOR Sudhir> "elilo.conf". 7. label=serial ( elilo entry to boot the Sudhir> serial console setup. ) 8. I have also checked the options Sudhir> in "make menuconfig" and found everything correct for serial Sudhir> console setup. Sudhir> After selecting "label=serial" and botting the OS the Sudhir> following is the command line from proc. [root@beast root]# Sudhir> cat /proc/cmdline Sudhir> BOOT_IMAGE=scsi0:EFI\redhat\vmlinuz-2.4.18-e.37smp Sudhir> root=LABEL=/ console=ttyS1,9600n8 console=tty0 ro Sudhir> The kernel cmdline seems to be correct but the messages are Sudhir> not directed on console. I have setup serial consoles on 32 Sudhir> bit machines earlier, but not on 64 bit. Sudhir> Please throw me some pointers to make it work. Sudhir> regards, sudhir dachepalli Sudhir> [root@beast root]# uname -a Linux beast 2.4.18-e.37smp #1 Sudhir> SMP Tue Aug 5 16:07:26 EDT 2003 ia64 unknown Sudhir> [root@beast root]# cat /etc/*release* Red Hat Linux Advanced Sudhir> Server release 2.1AS (Derry) prompt timeoutP Sudhir> default=2.4.18-e.37smp Sudhir> image=vmlinuz-2.4.18-e.37 label=2.4.18-e.37 Sudhir> initrd=initrd-2.4.18-e.37.img read-only Sudhir> append="root=LABEL=/" Sudhir> image=vmlinuz-2.4.18-e.37 label=scsi-128 initrd=scsi-128.img Sudhir> read-only root=/dev/sda4 Sudhir> image=vmlinuz-2.4.18-e.37smp label=2.4.18-e.37smp Sudhir> initrd=initrd-2.4.18-e.37smp.img read-only Sudhir> append="root=LABEL=/" Sudhir> image=vmlinuz-2.4.18-e.37smp label=serial Sudhir> initrd=initrd-2.4.18-e.37smp.img read-only Sudhir> append="root=LABEL=/ console=ttyS1,9600n8 console=tty0" Sudhir> image=vmlinuz-2.4.18-e.37smp label=lyq initrd=lyq.img Sudhir> read-only append="root=LABEL=/" Sudhir> image=vmlinuz-2.4.18-e.37smp label=mpp initrd=mpp.img Sudhir> read-only root=/dev/sda4 Sudhir> image=vmlinuz-2.4.18-e.12smp label=linux Sudhir> initrd=initrd-2.4.18-e.12smp.img read-only root=/dev/sda4 Sudhir> image=vmlinuz-2.4.18-e.12 label=linux-up Sudhir> initrd=initrd-2.4.18-e.12.img read-only root=/dev/sda4 Sudhir> - To unsubscribe from this list: send the line "unsubscribe Sudhir> linux-serial" in the body of a message to Sudhir> majordomo@vger.kernel.org More majordomo info at Sudhir> http://vger.kernel.org/majordomo-info.html - To unsubscribe Sudhir> from this list: send the line "unsubscribe linux-kernel" in Sudhir> the body of a message to majordomo@vger.kernel.org More Sudhir> majordomo info at http://vger.kernel.org/majordomo-info.html Sudhir> Please read the FAQ at http://www.tux.org/lkml/ ^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: Help in setting up serial console on 64 bit machine 2004-03-08 21:28 ` Help in setting up serial console on 64 bit machine David Mosberger @ 2004-03-09 15:04 ` Dachepalli, Sudhir 2004-03-09 15:35 ` Alex Williamson 0 siblings, 1 reply; 3+ messages in thread From: Dachepalli, Sudhir @ 2004-03-09 15:04 UTC (permalink / raw) To: 'linux-ia64@vger.kernel.org'; +Cc: 'Linux-Serial (E-mail)' Hello David, I have tried with 115200 also. Since it was not working I settled to 9600 . The Serial console was ttyS1. This is because this is the one with which I have done some data/text transfer through minicom sessions. Also I have checked the status change in FLAGS at /proc/tty/driver/serial when minicom is connected. regards, sudhir -----Original Message----- From: David Mosberger [mailto:davidm@napali.hpl.hp.com] Sent: Monday, March 08, 2004 3:28 PM To: Dachepalli, Sudhir Cc: 'Linux-Kernel (E-mail)'; linux-ia64@vger.kernel.org Subject: Re: Help in setting up serial console on 64 bit machine Sudhir, First a general comment: for ia64-specific questions, it's generally better to ask on linux-ia64@vger.kernel.org. As for your particular issue: the serial console normally is ttyS0, not ttyS1, so that might be the reason you're not seeing any output. Also, 9600 baud is rather slow. If the client-side can handle it, 115200 baud will be much nicer. --david >>>>> On Mon, 8 Mar 2004 15:04:04 -0600 , "Dachepalli, Sudhir" <sudhir.dachepalli@lsil.com> said: Sudhir> Hello SerialConsole user, Sudhir> I have a problem while setting up serial console to Sudhir> direct kernel printk messages to serial console. I dont see Sudhir> messages getting displayed. Sudhir> My setup --------- 1. IA 64 machine. 2. Redhat AS 3.0 Sudhir> 3. Kernel 2.4.18-e.37smp 4. Server Hardware : HP rx5670 Sudhir> Serial Console setup -------------------- 1. I have Sudhir> connected serial cable between two linux terminals. 2. open Sudhir> minicom on both servers. 3. changed the settings to Sudhir> 9600-8-n-1, no h/w flow control, no s/w flow control, stop Sudhir> bits =1. 4. I typed some charecters on server 1 and saw the Sudhir> charecters appear in server 2's minicom. 5. I typed some Sudhir> charecters on server 2 and saw the charecters appear in Sudhir> server 1's minicom. 6. I have changed the kernel command Sudhir> line for booting the kernel . PLEASE SEE BELOW FOR Sudhir> "elilo.conf". 7. label=serial ( elilo entry to boot the Sudhir> serial console setup. ) 8. I have also checked the options Sudhir> in "make menuconfig" and found everything correct for serial Sudhir> console setup. Sudhir> After selecting "label=serial" and botting the OS the Sudhir> following is the command line from proc. [root@beast root]# Sudhir> cat /proc/cmdline Sudhir> BOOT_IMAGE=scsi0:EFI\redhat\vmlinuz-2.4.18-e.37smp Sudhir> root=LABEL=/ console=ttyS1,9600n8 console=tty0 ro Sudhir> The kernel cmdline seems to be correct but the messages are Sudhir> not directed on console. I have setup serial consoles on 32 Sudhir> bit machines earlier, but not on 64 bit. Sudhir> Please throw me some pointers to make it work. Sudhir> regards, sudhir dachepalli Sudhir> [root@beast root]# uname -a Linux beast 2.4.18-e.37smp #1 Sudhir> SMP Tue Aug 5 16:07:26 EDT 2003 ia64 unknown Sudhir> [root@beast root]# cat /etc/*release* Red Hat Linux Advanced Sudhir> Server release 2.1AS (Derry) prompt timeoutP Sudhir> default=2.4.18-e.37smp Sudhir> image=vmlinuz-2.4.18-e.37 label=2.4.18-e.37 Sudhir> initrd=initrd-2.4.18-e.37.img read-only Sudhir> append="root=LABEL=/" Sudhir> image=vmlinuz-2.4.18-e.37 label=scsi-128 initrd=scsi-128.img Sudhir> read-only root=/dev/sda4 Sudhir> image=vmlinuz-2.4.18-e.37smp label=2.4.18-e.37smp Sudhir> initrd=initrd-2.4.18-e.37smp.img read-only Sudhir> append="root=LABEL=/" Sudhir> image=vmlinuz-2.4.18-e.37smp label=serial Sudhir> initrd=initrd-2.4.18-e.37smp.img read-only Sudhir> append="root=LABEL=/ console=ttyS1,9600n8 console=tty0" Sudhir> image=vmlinuz-2.4.18-e.37smp label=lyq initrd=lyq.img Sudhir> read-only append="root=LABEL=/" Sudhir> image=vmlinuz-2.4.18-e.37smp label=mpp initrd=mpp.img Sudhir> read-only root=/dev/sda4 Sudhir> image=vmlinuz-2.4.18-e.12smp label=linux Sudhir> initrd=initrd-2.4.18-e.12smp.img read-only root=/dev/sda4 Sudhir> image=vmlinuz-2.4.18-e.12 label=linux-up Sudhir> initrd=initrd-2.4.18-e.12.img read-only root=/dev/sda4 Sudhir> - To unsubscribe from this list: send the line "unsubscribe Sudhir> linux-serial" in the body of a message to Sudhir> majordomo@vger.kernel.org More majordomo info at Sudhir> http://vger.kernel.org/majordomo-info.html - To unsubscribe Sudhir> from this list: send the line "unsubscribe linux-kernel" in Sudhir> the body of a message to majordomo@vger.kernel.org More Sudhir> majordomo info at http://vger.kernel.org/majordomo-info.html Sudhir> Please read the FAQ at http://www.tux.org/lkml/ ^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: Help in setting up serial console on 64 bit machine 2004-03-09 15:04 ` Dachepalli, Sudhir @ 2004-03-09 15:35 ` Alex Williamson 0 siblings, 0 replies; 3+ messages in thread From: Alex Williamson @ 2004-03-09 15:35 UTC (permalink / raw) To: Dachepalli, Sudhir Cc: 'linux-ia64@vger.kernel.org', 'Linux-Serial (E-mail)' Only the ttyS0 port (the one labeled console) can be used for a serial console on the rx5670. The other ports aren't initialized early enough to support a serial console. The management processor can support external UARTs up to 38.4kbps (115.2kbps on newer boards), but it defaults to 9600, and higher speeds must be configured via the CA command in the MP. The speed of the kernel console is fairly independent of the speed of the external port, but I tend to go no higher than the external port speed. Hope that helps, Alex On Tue, 2004-03-09 at 08:04, Dachepalli, Sudhir wrote: > Hello David, > > I have tried with 115200 also. Since it was not working I settled to 9600 > . > > The Serial console was ttyS1. This is because this is the one with which > I have done some data/text transfer through minicom sessions. > Also I have checked the status change in FLAGS at /proc/tty/driver/serial > when minicom is connected. > > regards, > sudhir > > -----Original Message----- > From: David Mosberger [mailto:davidm@napali.hpl.hp.com] > Sent: Monday, March 08, 2004 3:28 PM > To: Dachepalli, Sudhir > Cc: 'Linux-Kernel (E-mail)'; linux-ia64@vger.kernel.org > Subject: Re: Help in setting up serial console on 64 bit machine > > > Sudhir, > > First a general comment: for ia64-specific questions, it's generally > better to ask on linux-ia64@vger.kernel.org. > > As for your particular issue: the serial console normally is ttyS0, > not ttyS1, so that might be the reason you're not seeing any output. > > Also, 9600 baud is rather slow. If the client-side can handle it, > 115200 baud will be much nicer. > > --david > > >>>>> On Mon, 8 Mar 2004 15:04:04 -0600 , "Dachepalli, Sudhir" > <sudhir.dachepalli@lsil.com> said: > > Sudhir> Hello SerialConsole user, > > Sudhir> I have a problem while setting up serial console to > Sudhir> direct kernel printk messages to serial console. I dont see > Sudhir> messages getting displayed. > > Sudhir> My setup --------- 1. IA 64 machine. 2. Redhat AS 3.0 > Sudhir> 3. Kernel 2.4.18-e.37smp 4. Server Hardware : HP rx5670 > > Sudhir> Serial Console setup -------------------- 1. I have > Sudhir> connected serial cable between two linux terminals. 2. open > Sudhir> minicom on both servers. 3. changed the settings to > Sudhir> 9600-8-n-1, no h/w flow control, no s/w flow control, stop > Sudhir> bits =1. 4. I typed some charecters on server 1 and saw the > Sudhir> charecters appear in server 2's minicom. 5. I typed some > Sudhir> charecters on server 2 and saw the charecters appear in > Sudhir> server 1's minicom. 6. I have changed the kernel command > Sudhir> line for booting the kernel . PLEASE SEE BELOW FOR > Sudhir> "elilo.conf". 7. label=serial ( elilo entry to boot the > Sudhir> serial console setup. ) 8. I have also checked the options > Sudhir> in "make menuconfig" and found everything correct for serial > Sudhir> console setup. > > Sudhir> After selecting "label=serial" and botting the OS the > Sudhir> following is the command line from proc. [root@beast root]# > Sudhir> cat /proc/cmdline > Sudhir> BOOT_IMAGE=scsi0:EFI\redhat\vmlinuz-2.4.18-e.37smp > Sudhir> root=LABEL=/ console=ttyS1,9600n8 console=tty0 ro > > Sudhir> The kernel cmdline seems to be correct but the messages are > Sudhir> not directed on console. I have setup serial consoles on 32 > Sudhir> bit machines earlier, but not on 64 bit. > > Sudhir> Please throw me some pointers to make it work. > > > Sudhir> regards, sudhir dachepalli > > > > Sudhir> [root@beast root]# uname -a Linux beast 2.4.18-e.37smp #1 > Sudhir> SMP Tue Aug 5 16:07:26 EDT 2003 ia64 unknown > > Sudhir> [root@beast root]# cat /etc/*release* Red Hat Linux Advanced > Sudhir> Server release 2.1AS (Derry) prompt timeoutP > Sudhir> default=2.4.18-e.37smp > > Sudhir> image=vmlinuz-2.4.18-e.37 label=2.4.18-e.37 > Sudhir> initrd=initrd-2.4.18-e.37.img read-only > Sudhir> append="root=LABEL=/" > > Sudhir> image=vmlinuz-2.4.18-e.37 label=scsi-128 initrd=scsi-128.img > Sudhir> read-only root=/dev/sda4 > > Sudhir> image=vmlinuz-2.4.18-e.37smp label=2.4.18-e.37smp > Sudhir> initrd=initrd-2.4.18-e.37smp.img read-only > Sudhir> append="root=LABEL=/" > > Sudhir> image=vmlinuz-2.4.18-e.37smp label=serial > Sudhir> initrd=initrd-2.4.18-e.37smp.img read-only > Sudhir> append="root=LABEL=/ console=ttyS1,9600n8 console=tty0" > > Sudhir> image=vmlinuz-2.4.18-e.37smp label=lyq initrd=lyq.img > Sudhir> read-only append="root=LABEL=/" > > Sudhir> image=vmlinuz-2.4.18-e.37smp label=mpp initrd=mpp.img > Sudhir> read-only root=/dev/sda4 > > Sudhir> image=vmlinuz-2.4.18-e.12smp label=linux > Sudhir> initrd=initrd-2.4.18-e.12smp.img read-only root=/dev/sda4 > > Sudhir> image=vmlinuz-2.4.18-e.12 label=linux-up > Sudhir> initrd=initrd-2.4.18-e.12.img read-only root=/dev/sda4 > > > Sudhir> - To unsubscribe from this list: send the line "unsubscribe > Sudhir> linux-serial" in the body of a message to > Sudhir> majordomo@vger.kernel.org More majordomo info at > Sudhir> http://vger.kernel.org/majordomo-info.html - To unsubscribe > Sudhir> from this list: send the line "unsubscribe linux-kernel" in > Sudhir> the body of a message to majordomo@vger.kernel.org More > Sudhir> majordomo info at http://vger.kernel.org/majordomo-info.html > Sudhir> Please read the FAQ at http://www.tux.org/lkml/ > - > To unsubscribe from this list: send the line "unsubscribe linux-ia64" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Alex Williamson HP Linux & Open Source Lab ^ permalink raw reply [flat|nested] 3+ messages in thread
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2004-03-08 21:28 ` Help in setting up serial console on 64 bit machine David Mosberger
2004-03-09 15:04 ` Dachepalli, Sudhir
2004-03-09 15:35 ` Alex Williamson
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