diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/idp/clock/ckinit.c')
| -rw-r--r-- | c/src/lib/libbsp/m68k/idp/clock/ckinit.c | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/c/src/lib/libbsp/m68k/idp/clock/ckinit.c b/c/src/lib/libbsp/m68k/idp/clock/ckinit.c deleted file mode 100644 index abee1418cc..0000000000 --- a/c/src/lib/libbsp/m68k/idp/clock/ckinit.c +++ /dev/null @@ -1,126 +0,0 @@ -/* Clock_init() - * - * - * This is modified by Doug McBride to get it to work for the MC68EC040 - * IDP board. The below comments are kept to show that some prior work - * was done in the area and the modifications performed was application - * specific for the IDP board to port it to. - * - * This routine initializes the mc68230 on the MC68EC040 board. - * The tick frequency is 40 milliseconds. - * - * Input parameters: NONE - * - * Output parameters: NONE - * - * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. - * On-Line Applications Research Corporation (OAR). - * All rights assigned to U.S. Government, 1994. - * - * This material may be reproduced by or for the U.S. Government pursuant - * to the copyright license under the clause at DFARS 252.227-7013. This - * notice must appear in all copies of this file and its derivatives. - * - * $Id$ - */ - -#include <stdlib.h> - -#include "rtems.h" -#include "clockdrv.h" -#include "bsp.h" -#include "cpu.h" - -rtems_unsigned32 Clock_isrs; /* ISRs until next tick */ -volatile rtems_unsigned32 Clock_driver_ticks; - /* ticks since initialization */ -rtems_isr_entry Old_ticker; - -extern rtems_configuration_table Configuration; -extern void led_putnum(); -void Disable_clock(); - -#define TIMER_VECTOR 0x4D - -rtems_device_driver Clock_initialize( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *pargp, - rtems_id tid, - rtems_unsigned32 *rval -) -{ - Install_clock( Clock_isr ); -} - -void ReInstall_clock( clock_isr ) -rtems_isr_entry clock_isr; -{ - rtems_unsigned32 isrlevel = 0 ; - - rtems_interrupt_disable( isrlevel ); - (void) set_vector( clock_isr, TIMER_VECTOR, 1 ); - rtems_interrupt_enable( isrlevel ); -} - -/* The following was added for debugging purposes */ -void Disable_clock() -{ - /* Disable timer */ - MC68230_WRITE (TCR, 0x00); -} - -void Install_clock( clock_isr ) -rtems_isr_entry clock_isr; -{ - Clock_driver_ticks = 0; - Clock_isrs = (int)(Configuration.microseconds_per_tick / 1000); - - if ( Configuration.ticks_per_timeslice ) { -/* led_putnum('c'); * for debugging purposes */ - Old_ticker = (rtems_isr_entry) set_vector( clock_isr, TIMER_VECTOR, 1 ); - - /* Disable timer for initialization */ - MC68230_WRITE (TCR, 0x00); - - /* some PI/T initialization stuff here -- see comment in the ckisr.c - file in this directory to understand why I use the values that I do */ - /* Set up the interrupt vector on the MC68230 chip: - TIVR = TIMER_VECTOR; */ - MC68230_WRITE (TIVR, TIMER_VECTOR); - - /* Set CPRH through CPRL to 193 (not 203) decimal for countdown--see ckisr.c - CPRH = 0x00; - CPRM = 0x00; - CPRL = 0xC1; */ - MC68230_WRITE (CPRH, 0x00); - MC68230_WRITE (CPRM, 0x00); - MC68230_WRITE (CPRL, 0xC1); - - /* Enable timer and use it as an external periodic interrupt generator - TCR = 0xA1; */ -/* led_putnum('a'); * for debugging purposes */ - MC68230_WRITE (TCR, 0xA1); - - /* - * Schedule the clock cleanup routine to execute if the application exits. - */ - atexit( Clock_exit ); - } -} - -void Clock_exit( void ) -{ - rtems_unsigned8 data; - - if ( Configuration.ticks_per_timeslice ) { - - /* disable timer - data = TCR; - TCR = (data & 0xFE); */ - MC68230_READ (TCR, data); - MC68230_WRITE (TCR, (data & 0xFE)); - - /* do not restore old vector */ - } -} |