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SCF(4)

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NAME    [Toc]    [Back]

     scf - SPARC Force sysconfig driver

SYNOPSIS    [Toc]    [Back]

     scf0 at mainbus0

DESCRIPTION    [Toc]    [Back]

     The scf driver provides access to the  system  configuration
registers on
     the Force CPU-5.  The system configuration registers control
the LED display
 on the front panel, the status of  the  rotary  switch,
and the flash
     programming control registers.

     By  setting  the sysctl(8) value machdep.led_blink to a nonzero value, the
     two user LEDs will blink back and forth at a rate of 1  second per point
     of load average.  The seven segment LED will also show a numeric value
     for the load average (in hex), and with load averages higher
than 15, the
     decimal point will be lit.

IOCTLS    [Toc]    [Back]

     The  scf device responds to the following ioctl(2) calls defined in
     <machine/scfio.h>:

     SCFIOCSLED1
       (u_int8_t) Set LED1 register based on the bits below.

             #define  SCF_LED_COLOR_MASK       0x03     /*  color
bits */
             #define  SCF_LED_COLOR_OFF        0x00    /* led off
*/
             #define SCF_LED_COLOR_GREEN     0x01    /* green led
*/
             #define  SCF_LED_COLOR_RED        0x02    /* red led
*/
             #define SCF_LED_COLOR_YELLOW     0x03     /*  yellow
led */
             #define  SCF_LED_BLINK_MASK       0x0c     /*  blink
bits */
             #define SCF_LED_BLINK_NONE       0x00     /*  steady
led */
             #define SCF_LED_BLINK_HALF      0x04    /* blink 1/2
hz */
             #define SCF_LED_BLINK_ONE       0x08    /*  blink  1
hz */
             #define  SCF_LED_BLINK_TWO        0x0c    /* blink 2
hz */

     SCFIOCGLED1
       (u_int8_t) Retrieve the value of the LED1  register  (bits
defined
       above).

     SCFIOCSLED2
       (u_int8_t)  Set  the  value of the LED2 register (bits defined above).

     SCFIOCGLED2
       (u_int8_t) Retrieve the value of the LED2  register  (bits
defined
       above).

     SCFIOCSLED7
       (u_int8_t) Set the value of the 7-segment LED based on the
bits below:

             #define SCF_7LED_A              0x01     /*  Layout:
*/
             #define  SCF_7LED_B              0x02    /*      AAA
*/
             #define SCF_7LED_C              0x04    /*     FF BB
*/
             #define  SCF_7LED_D              0x08    /*      GGG
*/
             #define SCF_7LED_E              0x10    /*     EE CC
*/
             #define  SCF_7LED_F              0x20    /*      DDD
P  */
             #define SCF_7LED_G              0x40
             #define SCF_7LED_P              0x80

     SCFIOCGROT
       (u_int8_t) Retrieve the value of the  16  position  rotary
switch on the
       front panel.

     SCFIOSFMCTRL
       (u_int8_t)  Set  up  the flash memory for writing based on
the bits below:

             #define  SCF_FMCTRL_SELROM        0x01      /*   sel
1st/2nd device */
             #define   SCF_FMCTRL_SELBOOT        0x02     /*  sel
boot/user flash */
             #define  SCF_FMCTRL_WRITEV        0x04     /*  write
voltage */
             #define   SCF_FMCTRL_SELADDR       0x38     /*  addr
21:19 bits */

       The SCF_FMCTRL_SELROM bit, if  clear,  selects  the  first
flash device,
       otherwise  the  second  flash  device  is  selected.   The
SCF_FMCTRL_SELBOOT
       bit, if set, selects the user flash,  otherwise  the  boot
flash is selected.
   Setting  the  SCF_FMCTRL_WRITEV bit turns on the
write voltage.
       The SCF_FMCTRL_SELADDR bits determine which window of  512
KBytes is active
 for reading/writing.

SEE ALSO    [Toc]    [Back]

      
      
     ioctl(2), intro(4), sysctl(8)

HISTORY    [Toc]    [Back]

     OpenBSD support for the scf first appeared in OpenBSD 2.6.

AUTHORS    [Toc]    [Back]

     The  driver  for the scf was written by Jason L. Wright <jason@thought.net>
     under contract with RTMX Incorporated.

OpenBSD     3.6                           July      25,      1999
[ Back ]
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