URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
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- This comparison shows the changes necessary to convert path
/openrisc/trunk/rtos/rtems/c/src/lib/libbsp/i960/rxgen960/clock
- from Rev 30 to Rev 173
- ↔ Reverse comparison
Rev 30 → Rev 173
/ckinit.c
0,0 → 1,176
/* Clock_init() |
* |
* This routine initializes the i960RP onboard timer |
* The tick frequency is 1 millisecond; assuming 33MHz core |
* |
* Input parameters: NONE |
* |
* Output parameters: NONE |
* |
* COPYRIGHT (c) 1989-1997. |
* RAMiX Inc 1999 |
* On-Line Applications Research Corporation (OAR). |
* Copyright assigned to U.S. Government, 1994. |
* |
* The license and distribution terms for this file may in |
* the file LICENSE in this distribution or at |
* http://www.OARcorp.com/rtems/license.html. |
* |
* $Id: ckinit.c,v 1.2 2001-09-27 11:59:58 chris Exp $ |
*/ |
|
#include <stdlib.h> |
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#include <bsp.h> |
#include <i960RP.h> |
#include <rtems/libio.h> |
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#define CLOCK_VECTOR 0x92 |
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rtems_unsigned32 Clock_isrs; /* ISRs until next tick */ |
rtems_unsigned32 Reload_Clock_isrs; |
|
i960_isr_entry Old_ticker; |
rtems_unsigned32 Clock_driver_ticks; |
/* ticks since initialization */ |
unsigned int clock_isr_global[16]; /* place to store global regs */ |
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void Clock_exit( void ); |
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/* |
* These are set by clock driver during its init |
*/ |
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rtems_device_major_number rtems_clock_major = ~0; |
rtems_device_minor_number rtems_clock_minor; |
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/* this is later in the file to avoid it being inlined */ |
rtems_isr Clock_isr( rtems_vector_number vector ); |
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void Install_clock( |
rtems_isr_entry clock_isr |
) |
{ |
volatile unsigned int *tmr0 = (unsigned int *) TMR0_ADDR; |
volatile unsigned int *trr0 = (unsigned int *) TRR0_ADDR; |
volatile unsigned int *tcr0 = (unsigned int *) TCR0_ADDR; |
volatile unsigned int *icon = (unsigned int *) ICON_ADDR; |
volatile unsigned int *imap2 = (unsigned int *) IMAP2_ADDR; |
volatile unsigned int *ipnd = (unsigned int *) IPND_ADDR; |
volatile unsigned int *imsk = (unsigned int *) IMSK_ADDR; |
void clockHandler(); |
|
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Clock_driver_ticks = 0; |
Reload_Clock_isrs = BSP_Configuration.microseconds_per_tick / 1000; |
Clock_isrs = Reload_Clock_isrs; |
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#define BUS_CLOCK_1 0 |
#define TMR_WRITE_CNTL 8 |
#define TMR_AUTO_RELOAD 4 |
#define TMR_ENABLE 2 |
#define TMR_TERM_CNT_STAT 1 |
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Old_ticker = set_vector( (((unsigned int) clock_isr) | 0x2), CLOCK_VECTOR, 1 ); |
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/* initialize the i960RP timer 0 here */ |
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/* set the timer countdown (Assume 33MHz operation) */ |
*trr0 = 30 * BSP_Configuration.microseconds_per_tick ; |
*tcr0 = 30 * BSP_Configuration.microseconds_per_tick ; |
/* |
kkprintf("Load the timers with %x\n", 30 * BSP_Configuration.microseconds_per_tick / Reload_Clock_isrs); |
*/ |
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*tmr0 = BUS_CLOCK_1 | TMR_AUTO_RELOAD | TMR_ENABLE; |
/* Unmask the interrupts */ |
*ipnd &= ~(1 << 12); |
*imsk |= 1 << 12; |
|
} |
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void Clock_exit() |
{ |
volatile unsigned int *tmr0 = (unsigned int *) TMR0_ADDR; |
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/* shut down the timer */ |
*tmr0 = *tmr0 & ~TMR_ENABLE; |
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i960_mask_intr( 12 ); |
/* do not restore old vector */ |
} |
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rtems_device_driver Clock_initialize( |
rtems_device_major_number major, |
rtems_device_minor_number minor, |
void *pargp |
) |
{ |
Install_clock( Clock_isr ); |
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atexit( Clock_exit ); |
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/* |
* make major/minor avail to others such as shared memory driver |
*/ |
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rtems_clock_major = major; |
rtems_clock_minor = minor; |
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return RTEMS_SUCCESSFUL; |
} |
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rtems_device_driver Clock_control( |
rtems_device_major_number major, |
rtems_device_minor_number minor, |
void *pargp |
) |
{ |
rtems_unsigned32 isrlevel; |
rtems_libio_ioctl_args_t *args = pargp; |
|
if (args == 0) |
goto done; |
|
/* |
* This is hokey, but until we get a defined interface |
* to do this, it will just be this simple... |
*/ |
|
if (args->command == rtems_build_name('I', 'S', 'R', ' ')) |
{ |
Clock_isr(CLOCK_VECTOR); |
} |
else if (args->command == rtems_build_name('N', 'E', 'W', ' ')) |
{ |
rtems_interrupt_disable( isrlevel ); |
(void) set_tmr_vector( args->buffer, CLOCK_VECTOR, 0 ); |
rtems_interrupt_enable( isrlevel ); |
} |
|
done: |
return RTEMS_SUCCESSFUL; |
} |
|
rtems_isr Clock_isr( |
rtems_vector_number vector |
) |
{ |
/* enable_tracing(); */ |
#ifdef NOTMB |
if ( Clock_isrs == 1 ) { |
rtems_clock_tick(); |
Clock_isrs = Reload_Clock_isrs; |
} |
else |
{ |
Clock_isrs -= 1; |
} |
#else |
*(int *)(0xfed00000) += 1; |
rtems_clock_tick(); |
#endif |
|
i960_clear_intr( 12 ); |
} |
|
/Makefile.am
0,0 → 1,32
## |
## $Id: Makefile.am,v 1.2 2001-09-27 11:59:58 chris Exp $ |
## |
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AUTOMAKE_OPTIONS = foreign 1.4 |
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PGM = $(ARCH)/clock.rel |
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C_FILES = ckinit.c |
C_O_FILES = $(C_FILES:%.c=$(ARCH)/%.o) |
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OBJS = $(C_O_FILES) |
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include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg |
include $(top_srcdir)/../../../../../../automake/lib.am |
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# |
# (OPTIONAL) Add local stuff here using += |
# |
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$(PGM): $(OBJS) |
$(make-rel) |
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# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile |
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all-local: $(ARCH) $(OBJS) $(PGM) |
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.PRECIOUS: $(PGM) |
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EXTRA_DIST = ckinit.c |
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include $(top_srcdir)/../../../../../../automake/local.am |