diff options
Diffstat (limited to 'c/src/lib/libbsp/arm/gba/clock')
-rw-r--r-- | c/src/lib/libbsp/arm/gba/clock/clockdrv.c | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/c/src/lib/libbsp/arm/gba/clock/clockdrv.c b/c/src/lib/libbsp/arm/gba/clock/clockdrv.c deleted file mode 100644 index ff171110b9..0000000000 --- a/c/src/lib/libbsp/arm/gba/clock/clockdrv.c +++ /dev/null @@ -1,97 +0,0 @@ -/** - * @file clockdrv.c - * - * Game Boy Advance Clock driver. - */ - -/* - * RTEMS GBA BSP - * - * Copyright (c) 2004 Markku Puro <markku.puro@kopteri.net> - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#include <rtems.h> -#include <bsp.h> -#include <bsp/irq.h> -#include <gba.h> -#include <assert.h> - -void Clock_isr(void * arg); -void Clock_driver_support_initialize_hardware(void); - -#define Clock_driver_support_at_tick() - -#define Clock_driver_support_install_isr( _new, _old ) \ - do { \ - rtems_status_code status = RTEMS_SUCCESSFUL; \ - status = rtems_interrupt_handler_install( \ - BSP_IRQ_TIMER3, \ - "Clock", \ - RTEMS_INTERRUPT_UNIQUE, \ - Clock_isr, \ - NULL \ - ); \ - assert(status == RTEMS_SUCCESSFUL); \ - _old = NULL; \ - } while(0) - -#define Clock_driver_support_shutdown_hardware() \ - do { \ - rtems_status_code status = RTEMS_SUCCESSFUL; \ - status = rtems_interrupt_handler_remove( \ - BSP_IRQ_TIMER3, \ - Clock_isr, \ - NULL \ - ); \ - assert(status == RTEMS_SUCCESSFUL); \ - } while (0) - - -/* - * Calculate Tick Times - * 1 / 16.78Mhz => 59.595 ns - * 64 / 16.78Mhz => 3.814 us - * 256 / 16.78Mhz => 15.256 us - * 1024 / 16.78Mhz => 61.025 us - */ -#define __TimTickTime_us ((1000000L/__ClockFrequency)*__TimPreScaler) -#define __TimTickTime_ns ((1000000000L/__ClockFrequency)*__TimPreScaler) - -#if (__TimPreScaler==1) - #define GBA_TMCNT_PS 0x0000 -#elif (__TimPreScaler==64) - #define GBA_TMCNT_PS 0x0001 -#elif (__TimPreScaler==256) - #define GBA_TMCNT_PS 0x0002 -#elif (__TimPreScaler==1024) - #define GBA_TMCNT_PS 0x0003 -#else - #define GBA_TMCNT_PS 0x0003 -#endif - -/** - * @brief This function set up the clock hardware - * - * @param None - * @return None - */ -void Clock_driver_support_initialize_hardware(void) -{ - int tmreload; - - tmreload = rtems_configuration_get_nanoseconds_per_tick() / __TimTickTime_ns; - - if (tmreload>0xFFFF) - tmreload = 0xFFFF; - GBA_REG_TM3CNT = (GBA_TMCNT_PS); - GBA_REG_TM3D = (0x0000-tmreload); - GBA_REG_TM3CNT = (0x00c0|GBA_TMCNT_PS); -} - -#define CLOCK_DRIVER_USE_DUMMY_TIMECOUNTER - -#include "../../../shared/clockdrv_shell.h" |