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| author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2001-03-14 17:19:53 +0000 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2001-03-14 17:19:53 +0000 |
| commit | f849f3ee1f41b9298d840bc79c1e7be4cc4a6249 (patch) | |
| tree | 8d79831f6b52cfaa6bf3263e572627adc4e88e41 /c/src/lib/libbsp/mips/genmongoosev/clock/clockdrv.c | |
| parent | 2001-03-14 Joel Sherrill <joel@OARcorp.com> (diff) | |
| download | rtems-f849f3ee1f41b9298d840bc79c1e7be4cc4a6249.tar.bz2 | |
2001-02-22 Joel Sherrill <joel@OARcorp.com>
* The Generic Mongoose-V BSP uses only the peripherals found on
the Synova Mongoose-V CPU. This is a radiation hardened CPU
based on the LSI Logic 33K.
* .cvsignore, ChangeLog, Makefile.am, README, bsp_specs, configure.in,
clock/.cvsignore, clock/Makefile.am, clock/clockdrv.c,
console/.cvsignore, console/Makefile.am, console/conscfg.c,
include/.cvsignore, include/Makefile.am, include/bsp.h,
start/.cvsignore, start/Makefile.am, start/regs.S, start/start.S,
startup/.cvsignore, startup/Makefile.am, startup/bspstart.c,
startup/linkcmds, timer/.cvsignore, timer/Makefile.am, timer/timer.c,
wrapup/.cvsignore, wrapup/Makefile.am: New files.
Diffstat (limited to 'c/src/lib/libbsp/mips/genmongoosev/clock/clockdrv.c')
| -rw-r--r-- | c/src/lib/libbsp/mips/genmongoosev/clock/clockdrv.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/mips/genmongoosev/clock/clockdrv.c b/c/src/lib/libbsp/mips/genmongoosev/clock/clockdrv.c new file mode 100644 index 0000000000..b2391da41e --- /dev/null +++ b/c/src/lib/libbsp/mips/genmongoosev/clock/clockdrv.c @@ -0,0 +1,54 @@ +/* + * Instantiate the clock driver shell. + * + * The tx3904 simulator in gdb counts instructions. + * + * $Id$ + */ + +#include <rtems.h> +#include <libcpu/mongoose-v.h> +#include <bsp.h> + +#if defined(USE_TIMER2_FOR_CLOCK) +#define CLOCK_BASE MONGOOSEV_TIMER2_BASE +#define CLOCK_VECTOR MONGOOSEV_IRQ_TIMER2 +#else +#define CLOCK_BASE MONGOOSEV_TIMER1_BASE +#define CLOCK_VECTOR MONGOOSEV_IRQ_TIMER1 +#endif + +/* reset Timeout (TO) bit */ +#define Clock_driver_support_at_tick() \ + MONGOOSEV_WRITE_REGISTER( \ + CLOCK_BASE, \ + MONGOOSEV_TIMER_CONTROL_REGISTER, \ + (MONGOOSEV_TIMER_CONTROL_COUNTER_ENABLE | \ + MONGOOSEV_TIMER_CONTROL_INTERRUPT_ENABLE) \ + ); + +#define Clock_driver_support_install_isr( _new, _old ) \ + do { \ + _old = set_vector( _new, CLOCK_VECTOR, 1 ); \ + } while(0) + + +extern int ClockRate; + +#define CLICKS (unsigned32) &ClockRate +#define Clock_driver_support_initialize_hardware() \ + do { \ + unsigned32 _clicks; \ + _clicks = CLICKS * rtems_configuration_get_microseconds_per_tick(); \ + MONGOOSEV_WRITE_REGISTER( \ + CLOCK_BASE, \ + MONGOOSEV_TIMER_INITIAL_COUNTER_REGISTER, \ + _clicks \ + ); \ + Clock_driver_support_at_tick(); \ + } while(0) + +#define Clock_driver_support_shutdown_hardware() \ + MONGOOSEV_WRITE_REGISTER( CLOCK_BASE, MONGOOSEV_TIMER_CONTROL_REGISTER, 0 ) + +#include <clockdrv_shell.c> |