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2006-11-16 Joel Sherrill <joel@OARcorp.com>

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* clock/ckinit.c, console/console.c: Use common clock driver template
	and eliminate all fast idle code specific to this BSP. This
	eliminates a fair amount of code in the BSP clock driver and
	bsp_startup. The LEON3 has to do a scan of the AMBA bus to find the
	timer so I added the new hook Clock_driver_support_find_timer to
	support this. In general, there was some clean up to the file headers
	of various files.
This commit is contained in:
Joel Sherrill
2006-11-16 16:31:14 +00:00
parent 143902fc6a
commit 44dde18e64
3 changed files with 59 additions and 216 deletions
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10
c/src/lib/libbsp/sparc/erc32/ChangeLog
View File

@@ -1,3 +1,13 @@
2006-11-16 Joel Sherrill <joel@OARcorp.com>
* clock/ckinit.c, console/console.c: Use common clock driver template
and eliminate all fast idle code specific to this BSP. This
eliminates a fair amount of code in the BSP clock driver and
bsp_startup. The LEON3 has to do a scan of the AMBA bus to find the
timer so I added the new hook Clock_driver_support_find_timer to
support this. In general, there was some clean up to the file headers
of various files.
2006-10-20 Ralf Corsépius <ralf.corsepius@rtems.org>
* Makefile.am: Remove superfluous -DASM.

254
c/src/lib/libbsp/sparc/erc32/clock/ckinit.c
View File

@@ -7,7 +7,7 @@
* The tick frequency is directly programmed to the configured number of
* microseconds per tick.
*
* COPYRIGHT (c) 1989-1999.
* COPYRIGHT (c) 1989-2006.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
@@ -24,10 +24,12 @@
* $Id$
*/
#include <stdlib.h>
#include <bsp.h>
#include <rtems/libio.h>
#include <bspopts.h>
#if SIMSPARC_FAST_IDLE==1
#define CLOCK_DRIVER_USE_FAST_IDLE
#endif
/*
* The Real Time Clock Counter Timer uses this trap type.
@@ -35,222 +37,42 @@
#define CLOCK_VECTOR ERC32_TRAP_TYPE( ERC32_INTERRUPT_REAL_TIME_CLOCK )
/*
* Clock ticks since initialization
*/
#define Clock_driver_support_at_tick()
volatile uint32_t Clock_driver_ticks;
/*
* This is the value programmed into the count down timer. It
* is artificially lowered when SIMSPARC_FAST_IDLE is defined to
* cut down how long we spend in the idle task while executing on
* the simulator.
*/
extern uint32_t CPU_SPARC_CLICKS_PER_TICK;
rtems_isr_entry Old_ticker;
void Clock_exit( void );
/*
* These are set by clock driver during its init
*/
rtems_device_major_number rtems_clock_major = ~0;
rtems_device_minor_number rtems_clock_minor;
/*
* Clock_isr
*
* This is the clock tick interrupt handler.
*
* Input parameters:
* vector - vector number
*
* Output parameters: NONE
*
* Return values: NONE
*
*/
rtems_isr Clock_isr(
rtems_vector_number vector
)
{
/*
* If we are in "fast idle" mode, then the value for clicks per tick
* is lowered to decrease the amount of time spent executing the idle
* task while using the SPARC Instruction Simulator.
*/
#if SIMSPARC_FAST_IDLE
ERC32_MEC.Real_Time_Clock_Counter = CPU_SPARC_CLICKS_PER_TICK;
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING |
ERC32_MEC_TIMER_COUNTER_LOAD_COUNTER
);
#endif
/*
* The driver has seen another tick.
*/
Clock_driver_ticks += 1;
/*
* Real Time Clock counter/timer is set to automatically reload.
*/
rtems_clock_tick();
}
/*
* Install_clock
*
* This routine actually performs the hardware initialization for the clock.
*
* Input parameters:
* clock_isr - clock interrupt service routine entry point
*
* Output parameters: NONE
*
* Return values: NONE
*
*/
#define Clock_driver_support_install_isr( _new, _old ) \
do { \
_old = set_vector( _new, CLOCK_VECTOR, 1 ); \
} while(0)
extern int CLOCK_SPEED;
void Install_clock(
rtems_isr_entry clock_isr
)
{
Clock_driver_ticks = 0;
#define Clock_driver_support_initialize_hardware() \
do { \
/* approximately 1 us per countdown */ \
ERC32_MEC.Real_Time_Clock_Scalar = CLOCK_SPEED - 1; \
ERC32_MEC.Real_Time_Clock_Counter = \
BSP_Configuration.microseconds_per_tick; \
\
ERC32_MEC_Set_Real_Time_Clock_Timer_Control( \
ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING | \
ERC32_MEC_TIMER_COUNTER_LOAD_SCALER | \
ERC32_MEC_TIMER_COUNTER_LOAD_COUNTER \
); \
\
ERC32_MEC_Set_Real_Time_Clock_Timer_Control( \
ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING | \
ERC32_MEC_TIMER_COUNTER_RELOAD_AT_ZERO \
); \
} while (0)
Old_ticker = (rtems_isr_entry) set_vector( clock_isr, CLOCK_VECTOR, 1 );
#define Clock_driver_support_shutdown_hardware() \
do { \
ERC32_Mask_interrupt( ERC32_INTERRUPT_REAL_TIME_CLOCK ); \
\
ERC32_MEC_Set_Real_Time_Clock_Timer_Control( \
ERC32_MEC_TIMER_COUNTER_DISABLE_COUNTING \
); \
} while (0)
/* approximately 1 us per countdown */
ERC32_MEC.Real_Time_Clock_Scalar = CLOCK_SPEED - 1;
ERC32_MEC.Real_Time_Clock_Counter = CPU_SPARC_CLICKS_PER_TICK;
#include "../../../shared/clockdrv_shell.c"
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING |
ERC32_MEC_TIMER_COUNTER_LOAD_SCALER |
ERC32_MEC_TIMER_COUNTER_LOAD_COUNTER
);
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_ENABLE_COUNTING |
ERC32_MEC_TIMER_COUNTER_RELOAD_AT_ZERO
);
atexit( Clock_exit );
}
/*
* Clock_exit
*
* This routine allows the clock driver to exit by masking the interrupt and
* disabling the clock's counter.
*
* Input parameters: NONE
*
* Output parameters: NONE
*
* Return values: NONE
*
*/
void Clock_exit( void )
{
ERC32_Mask_interrupt( ERC32_INTERRUPT_REAL_TIME_CLOCK );
ERC32_MEC_Set_Real_Time_Clock_Timer_Control(
ERC32_MEC_TIMER_COUNTER_DISABLE_COUNTING
);
/* do not restore old vector */
}
/*
* Clock_initialize
*
* This routine initializes the clock driver.
*
* Input parameters:
* major - clock device major number
* minor - clock device minor number
* parg - pointer to optional device driver arguments
*
* Output parameters: NONE
*
* Return values:
* rtems_device_driver status code
*/
rtems_device_driver Clock_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *pargp
)
{
Install_clock( Clock_isr );
/*
* make major/minor avail to others such as shared memory driver
*/
rtems_clock_major = major;
rtems_clock_minor = minor;
return RTEMS_SUCCESSFUL;
}
/*
* Clock_control
*
* This routine is the clock device driver control entry point.
*
* Input parameters:
* major - clock device major number
* minor - clock device minor number
* parg - pointer to optional device driver arguments
*
* Output parameters: NONE
*
* Return values:
* rtems_device_driver status code
*/
rtems_device_driver Clock_control(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *pargp
)
{
uint32_t 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_vector( args->buffer, CLOCK_VECTOR, 1 );
rtems_interrupt_enable( isrlevel );
}
done:
return RTEMS_SUCCESSFUL;
}

11
c/src/lib/libbsp/sparc/erc32/console/console.c
View File

@@ -416,3 +416,14 @@ rtems_device_driver console_control(
{
return rtems_termios_ioctl (arg);
}
/*
* To support printk
*/
#include <rtems/bspIo.h>
void BSP_output_char_f(char c) { console_outbyte_polled( 0, c ); }
BSP_output_char_function_type BSP_output_char = BSP_output_char_f;
BSP_polling_getchar_function_type BSP_poll_char = NULL;