diff options
Diffstat (limited to 'c/src/lib/libbsp/m68k/mvme136/clock/ckinit.c')
| -rw-r--r-- | c/src/lib/libbsp/m68k/mvme136/clock/ckinit.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/c/src/lib/libbsp/m68k/mvme136/clock/ckinit.c b/c/src/lib/libbsp/m68k/mvme136/clock/ckinit.c deleted file mode 100644 index de88fe9252..0000000000 --- a/c/src/lib/libbsp/m68k/mvme136/clock/ckinit.c +++ /dev/null @@ -1,111 +0,0 @@ -/* Clock_init() - * - * This routine initializes the Z80386 1 on the MVME136 board. - * The tick frequency is 1 millisecond. - * - * 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 <bsp.h> -#include <clockdrv.h> -#include <z8036.h> - -#define MICRVAL 0xe2 /* disable lower chain, no vec */ - /* set right justified addr */ - /* and master int enable */ -#define MCCRVAL 0xc4 /* enable T1 and port B */ - /* timers independent */ -#define MS_COUNT 0x07d0 /* T1's countdown constant (1 ms) */ -#define T1MSRVAL 0x80 /* T1 cont. cycle/pulse output */ -#define T1CSRVAL 0xc6 /* enable interrupt, allow and */ - /* and trigger countdown */ - -rtems_unsigned32 Clock_isrs; /* ISRs until next tick */ -volatile rtems_unsigned32 Clock_driver_ticks; - /* ticks since initialization */ -rtems_isr_entry Old_ticker; - -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( - rtems_isr_entry clock_isr -) -{ - rtems_unsigned32 isrlevel; - - rtems_interrupt_disable( isrlevel ); - (void) set_vector( clock_isr, 66, 1 ); - rtems_interrupt_enable( isrlevel ); -} - -void Install_clock( - rtems_isr_entry clock_isr -) -{ - volatile struct z8036_map *timer; - - Clock_driver_ticks = 0; - Clock_isrs = BSP_Configuration.microseconds_per_tick / 1000; - - if ( BSP_Configuration.ticks_per_timeslice ) { - Old_ticker = (rtems_isr_entry) set_vector( clock_isr, 66, 1 ); - timer = (struct z8036_map *) 0xfffb0000; - timer->MASTER_INTR = MICRVAL; - timer->CT1_MODE_SPEC = T1MSRVAL; - - *((rtems_unsigned16 *)0xfffb0016) = MS_COUNT; /* write countdown value */ -/* - timer->CT1_TIME_CONST_MSB = (MS_COUNT >> 8); - timer->CT1_TIME_CONST_LSB = (MS_COUNT & 0xff); -*/ - timer->MASTER_CFG = MCCRVAL; - timer->CT1_CMD_STATUS = T1CSRVAL; - -/* - * Enable interrupt via VME interrupt mask register - */ - (*(rtems_unsigned8 *)0xfffb0038) &= 0xfd; - - - atexit( Clock_exit ); - } - -} - -void Clock_exit( void ) -{ - volatile struct z8036_map *timer; - - if ( BSP_Configuration.ticks_per_timeslice ) { - timer = (struct z8036_map *) 0xfffb0000; - timer->MASTER_INTR = 0x62; - timer->CT1_MODE_SPEC = 0x00; - timer->MASTER_CFG = 0xf4; - timer->CT1_CMD_STATUS = 0x00; - /* do not restore old vector */ - } -} |