[coreboot] and/or busybox issue with alix2c3 serial console

[Roman Yeryomin]

On Tue, Nov 4, 2008 at 9:04 PM, ron minnich <rminnich at gmail.com> wrote:
> On Tue, Nov 4, 2008 at 10:59 AM, Roman Yeryomin <leroi.lists at gmail.com> wrote:
>> On Tue, Nov 4, 2008 at 8:45 PM, Peter Stuge <peter at stuge.se> wrote:
>>> ron minnich wrote:
>>>> /sbin/init is going to try to open the console
>>>
>>> Good point.
>>>
>>> Is there a /dev/console node available in your filesystem at all
>>> times, Roman?
>>
>> yep
>>
>> ls -la /dev/console
>> crw-r--r--    1 root     root       5,   1 Jan  1  2000 /dev/console
>>
> cat /proc/devices

Character devices:
  1 mem
  4 /dev/vc/0
  4 tty
  4 ttyS
  5 /dev/tty
  5 /dev/console
  5 /dev/ptmx
  7 vcs
 10 misc
 13 input
 90 mtd
108 ppp
128 ptm
136 pts

Block devices:
  3 ide0
 31 mtdblock

> cat /proc/interrupts show

           CPU0
  0:    2594034    XT-PIC-XT        timer
  2:          0    XT-PIC-XT        cascade
  4:          0    XT-PIC-XT        serial
  8:          0    XT-PIC-XT        rtc
 10:      23113    XT-PIC-XT        eth0
 11:          5    XT-PIC-XT        eth1, eth2
 14:      20579    XT-PIC-XT        ide0
NMI:          0   Non-maskable interrupts
LOC:          0   Local timer interrupts
RES:          0   Rescheduling interrupts
CAL:          0   function call interrupts
TLB:          0   TLB shootdowns
TRM:          0   Thermal event interrupts
SPU:          0   Spurious interrupts
ERR:          0
MIS:          0

> If you do this
> echo HITHERE > /dev/ttyS0

nothing
it does work with tinybios
also cat /proc/tty/driver/serial indicates that there is no tx/rx:
serinfo:1.0 driver revision:
0: uart:16550A port:000003F8 irq:4 tx:0 rx:0 RTS|CTS|DTR|DSR|CD
1: uart:unknown port:000002F8 irq:3

> does it appear on console? If you type on console, what does
> /proc/interrupts show?

serial interrupt counter doesn't change if you are talking about that


Roman