From mboxrd@z Thu Jan 1 00:00:00 1970 From: Horms Date: Fri, 02 Jun 2006 11:48:06 +0000 Subject: IA64: Broken Serial Console Message-Id: <20060602114805.GA1462@verge.net.au> List-Id: References: <44128F9D.7050402@sgi.com> <200603112017.k2BKHcg20412@unix-os.sc.intel.com> <20060310082445.GA18715@verge.net.au> <20060311034346.GI11359@verge.net.au> <44128F9D.7050402@sgi.com> <20060313040825.GA31703@verge.net.au> In-Reply-To: <20060313040825.GA31703@verge.net.au> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org, linux-serial@vger.kernel.org Cc: Bjorn Helgaas , Russell King Hi, I have noticed that the serial console on my ia64 machine seems to have broken since 2.6.16. Thanks to git bisect I have been able to track this problem down to 111c9bf8c5cfa92363b3719c8956d29368b5b9de [SERIAL] remove 8250_acpi (replaced by 8250_pnp and PNPACPI) With the combination of PNPACPI and 8250_pnp, we no longer need 8250_acpi. Signed-off-by: Bjorn Helgaas Signed-off-by: Russell King I haven't had time to look into the code and I have to leave my desk shortly, so I thought I would post here to see if anyone has any ideas. I am boot using the following command line: console=tty0 console=uart,io,0x2f8 console=ttyS0 Althogh I'm pretty sure I really only need: console=uart,io,0x2f8 A failed boot looks like this: io scheduler anticipatory registered (default) Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled isa bounce pool size: 16 pages RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize mice: PS/2 mouse device common for all mice EFI Variables Facility v0.08 2004-May-17 No ttyS device at I/O port 0x2f8 for console And a successful boot looks like this: io scheduler anticipatory registered (default) Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled acpi_serial_port: zero-length IO port range? serial8250: ttyS0 at I/O 0x3f8 (irq = 44) is a 16550A acpi_serial_port: zero-length IO port range? serial8250: ttyS1 at I/O 0x2f8 (irq = 45) is a 16550A isa bounce pool size: 16 pages RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize mice: PS/2 mouse device common for all mice EFI Variables Facility v0.08 2004-May-17 Adding console on ttyS1 at I/O port 0x2f8 (options '115200') prompt # The machine in question is a Trus64-21. Sorry I don't have an English link handy, but if you need me to dig up details please ask. http://www.plathome.co.jp/factory/ser/tru_ita64_21.html -- Horms http://www.vergenet.net/~horms/